diff --git a/doc/classes/GPUParticles2D.xml b/doc/classes/GPUParticles2D.xml
index ee552887835d..54c8689ab0d7 100644
--- a/doc/classes/GPUParticles2D.xml
+++ b/doc/classes/GPUParticles2D.xml
@@ -50,6 +50,10 @@
 		
 			Number of particles emitted in one emission cycle.
 		
+		
+			The ratio of particles that should actually be emitted. If set to a value lower than [code]1.0[/code], this will set the amount of emitted particles throughout the lifetime to [code]amount * amount_ratio[/code]. Unlike changing [member amount], changing [member amount_ratio] while emitting does not affect already-emitted particles and doesn't cause the particle system to restart. [member amount_ratio] can be used to create effects that make the number of emitted particles vary over time.
+			[b]Note:[/b] Reducing the [member amount_ratio] has no performance benefit, since resources need to be allocated and processed for the total [member amount] of particles regardless of the [member amount_ratio].
+		
 		
 			Multiplier for particle's collision radius. [code]1.0[/code] corresponds to the size of the sprite.
 		
@@ -68,6 +72,10 @@
 		
 			If [code]true[/code], results in fractional delta calculation which has a smoother particles display effect.
 		
+		
+			Causes all the particles in this node to interpolate towards the end of their lifetime.
+			[b]Note[/b]: This only works when used with a [ParticleProcessMaterial]. It needs to be manually implemented for custom process shaders.
+		
 		
 			Enables particle interpolation, which makes the particle movement smoother when their [member fixed_fps] is lower than the screen refresh rate.
 		
diff --git a/doc/classes/GPUParticles3D.xml b/doc/classes/GPUParticles3D.xml
index 3d7243fcbdcf..dc7e51b7d745 100644
--- a/doc/classes/GPUParticles3D.xml
+++ b/doc/classes/GPUParticles3D.xml
@@ -63,6 +63,10 @@
 		
 			Number of particles to emit.
 		
+		
+			The ratio of particles that should actually be emitted. If set to a value lower than [code]1.0[/code], this will set the amount of emitted particles throughout the lifetime to [code]amount * amount_ratio[/code]. Unlike changing [member amount], changing [member amount_ratio] while emitting does not affect already-emitted particles and doesn't cause the particle system to restart. [member amount_ratio] can be used to create effects that make the number of emitted particles vary over time.
+			[b]Note:[/b] Reducing the [member amount_ratio] has no performance benefit, since resources need to be allocated and processed for the total [member amount] of particles regardless of the [member amount_ratio].
+		
 		
 		
 		
@@ -98,6 +102,10 @@
 		
 			If [code]true[/code], results in fractional delta calculation which has a smoother particles display effect.
 		
+		
+			Causes all the particles in this node to interpolate towards the end of their lifetime.
+			[b]Note[/b]: This only works when used with a [ParticleProcessMaterial]. It needs to be manually implemented for custom process shaders.
+		
 		
 			Enables particle interpolation, which makes the particle movement smoother when their [member fixed_fps] is lower than the screen refresh rate.
 		
diff --git a/doc/classes/ParticleProcessMaterial.xml b/doc/classes/ParticleProcessMaterial.xml
index 0f6cc3b29ee4..b7f55184f0b3 100644
--- a/doc/classes/ParticleProcessMaterial.xml
+++ b/doc/classes/ParticleProcessMaterial.xml
@@ -71,6 +71,9 @@
 		
 	
 	
+		
+			The alpha value of each particle's color will be multiplied by this [CurveTexture] over its lifetime.
+		
 		
 			Each particle's rotation will be animated along this [CurveTexture].
 		
@@ -151,6 +154,18 @@
 		
 			Unit vector specifying the particles' emission direction.
 		
+		
+			A curve that specifies the velocity along each of the axes of the particle system along its lifetime.
+			[b]Note:[/b] Animated velocities will not be affected by damping, use [member velocity_limit_curve] instead.
+		
+		
+			Maximum directional velocity value, which is multiplied by [member directional_velocity_curve].
+			[b]Note:[/b] Animated velocities will not be affected by damping, use [member velocity_limit_curve] instead.
+		
+		
+			Minimum directional velocity value, which is multiplied by [member directional_velocity_curve].
+			[b]Note:[/b] Animated velocities will not be affected by damping, use [member velocity_limit_curve] instead.
+		
 		
 			The box's extents if [member emission_shape] is set to [constant EMISSION_SHAPE_BOX].
 		
@@ -158,6 +173,10 @@
 			Particle color will be modulated by color determined by sampling this texture at the same point as the [member emission_point_texture].
 			[b]Note:[/b] [member emission_color_texture] multiplies the particle mesh's vertex colors. To have a visible effect on a [BaseMaterial3D], [member BaseMaterial3D.vertex_color_use_as_albedo] [i]must[/i] be [code]true[/code]. For a [ShaderMaterial], [code]ALBEDO *= COLOR.rgb;[/code] must be inserted in the shader's [code]fragment()[/code] function. Otherwise, [member emission_color_texture] will have no visible effect.
 		
+		
+			Each particle's color will be multiplied by this [CurveTexture] over its lifetime.
+			[b]Note:[/b] This property won't have a visible effect unless the render material is marked as unshaded.
+		
 		
 			Particle velocity and rotation will be set by sampling this texture at the same point as the [member emission_point_texture]. Used only in [constant EMISSION_SHAPE_DIRECTED_POINTS]. Can be created automatically from mesh or node by selecting "Create Emission Points from Mesh/Node" under the "Particles" tool in the toolbar.
 		
@@ -182,6 +201,12 @@
 		
 			Particles will be emitted inside this region. Use [enum EmissionShape] constants for values.
 		
+		
+			The offset for the [member emission_shape], in local space.
+		
+		
+			The scale of the [member emission_shape], in local space.
+		
 		
 			The sphere's radius if [member emission_shape] is set to [constant EMISSION_SHAPE_SPHERE].
 		
@@ -200,6 +225,9 @@
 		
 			Minimum equivalent of [member hue_variation_max].
 		
+		
+			Percentage of the velocity of the respective [GPUParticles2D] or [GPUParticles3D] inherited by each particle when spawning.
+		
 		
 			Maximum initial velocity magnitude for each particle. Direction comes from [member direction] and [member spread].
 		
@@ -220,17 +248,23 @@
 		
 		
 			Each particle's orbital velocity will vary along this [CurveTexture].
+			[b]Note:[/b] For 3D orbital velocity, use a [CurveXYZTexture].
+			[b]Note:[/b] Animated velocities will not be affected by damping, use [member velocity_limit_curve] instead.
 		
-		
+		
 			Maximum orbital velocity applied to each particle. Makes the particles circle around origin. Specified in number of full rotations around origin per second.
-			Only available when [member particle_flag_disable_z] is [code]true[/code].
+			[b]Note:[/b] Animated velocities will not be affected by damping, use [member velocity_limit_curve] instead.
 		
-		
+		
 			Minimum equivalent of [member orbit_velocity_max].
+			[b]Note:[/b] Animated velocities will not be affected by damping, use [member velocity_limit_curve] instead.
 		
 		
 			Align Y axis of particle with the direction of its velocity.
 		
+		
+			Changes the behavior of the damping properties from a linear deceleration to a deceleration based on speed percentage.
+		
 		
 			If [code]true[/code], particles will not move on the z axis.
 		
@@ -246,6 +280,18 @@
 		
 			Minimum equivalent of [member radial_accel_max].
 		
+		
+			A [CurveTexture] that defines the velocity over the particle's lifetime away (or toward) the [member velocity_pivot].
+			[b]Note:[/b] Animated velocities will not be affected by damping, use [member velocity_limit_curve] instead.
+		
+		
+			Maximum radial velocity applied to each particle. Makes particles move away from the [member velocity_pivot], or toward it if negative.
+			[b]Note:[/b] Animated velocities will not be affected by damping, use [member velocity_limit_curve] instead.
+		
+		
+			Minimum radial velocity applied to each particle. Makes particles move away from the [member velocity_pivot], or toward it if negative.
+			[b]Note:[/b] Animated velocities will not be affected by damping, use [member velocity_limit_curve] instead.
+		
 		
 			Each particle's scale will vary along this [CurveTexture]. If a [CurveXYZTexture] is supplied instead, the scale will be separated per-axis.
 		
@@ -255,6 +301,17 @@
 		
 			Minimum equivalent of [member scale_max].
 		
+		
+			Either a [CurveTexture] or a [CurveXYZTexture] that scales each particle based on its velocity.
+		
+		
+			Maximum velocity value reference for [member scale_over_velocity_curve].
+			[member scale_over_velocity_curve] will be interpolated between [member scale_over_velocity_min] and [member scale_over_velocity_max].
+		
+		
+			Minimum velocity value reference for [member scale_over_velocity_curve].
+			[member scale_over_velocity_curve] will be interpolated between [member scale_over_velocity_min] and [member scale_over_velocity_max].
+		
 		
 			Each particle's initial direction range from [code]+spread[/code] to [code]-spread[/code] degrees.
 		
@@ -317,6 +374,11 @@
 		
 			The turbulence noise strength. Increasing this will result in a stronger, more contrasting, flow pattern.
 		
+		
+			A [CurveTexture] that defines the maximum velocity of a particle during its lifetime.
+		
+		
+		
 	
 	
 		
@@ -355,7 +417,16 @@
 		
 			Use with [method set_param_min], [method set_param_max], and [method set_param_texture] to set animation offset properties.
 		
-		
+		
+			Use with [method set_param_min], [method set_param_max], and [method set_param_texture] to set radial velocity properties.
+		
+		
+			Use with [method set_param_min], [method set_param_max], and [method set_param_texture] to set directional velocity properties.
+		
+		
+			Use with [method set_param_min], [method set_param_max], and [method set_param_texture] to set scale over velocity properties.
+		
+		
 			Represents the size of the [enum Parameter] enum.
 		
 		
@@ -367,7 +438,9 @@
 		
 			Use with [method set_particle_flag] to set [member particle_flag_disable_z].
 		
-		
+		
+		
+		
 			Represents the size of the [enum ParticleFlags] enum.
 		
 		
diff --git a/doc/classes/RenderingServer.xml b/doc/classes/RenderingServer.xml
index 24b409d94109..dd279206ab75 100644
--- a/doc/classes/RenderingServer.xml
+++ b/doc/classes/RenderingServer.xml
@@ -2627,6 +2627,14 @@
 				Sets the number of particles to be drawn and allocates the memory for them. Equivalent to [member GPUParticles3D.amount].
 			
 		
+		
+			
+			
+			
+			
+				Sets the amount ratio for particles to be emitted. Equivalent to [member GPUParticles3D.amount_ratio].
+			
+		
 		
 			
 			
@@ -2675,6 +2683,14 @@
 				Sets the [Transform3D] that will be used by the particles when they first emit.
 			
 		
+		
+			
+			
+			
+			
+				Sets the velocity of a particle node, that will be used by [member ParticleProcessMaterial.inherit_velocity_ratio].
+			
+		
 		
 			
 			
@@ -2707,6 +2723,14 @@
 				If [code]true[/code], uses fractional delta which smooths the movement of the particles. Equivalent to [member GPUParticles3D.fract_delta].
 			
 		
+		
+			
+			
+			
+			
+				Sets the value that informs a [ParticleProcessMaterial] to rush all particles towards the end of their lifetime.
+			
+		
 		
 			
 			
diff --git a/drivers/gles3/shaders/particles.glsl b/drivers/gles3/shaders/particles.glsl
index 40881a1808ce..64ef26b0756c 100644
--- a/drivers/gles3/shaders/particles.glsl
+++ b/drivers/gles3/shaders/particles.glsl
@@ -78,7 +78,7 @@ layout(std140) uniform FrameData { //ubo:0
 	float delta;
 
 	float particle_size;
-	float pad0;
+	float amount_ratio;
 	float pad1;
 	float pad2;
 
@@ -89,6 +89,9 @@ layout(std140) uniform FrameData { //ubo:0
 
 	mat4 emission_transform;
 
+	vec3 emitter_velocity;
+	float interp_to_end;
+
 	Attractor attractors[MAX_ATTRACTORS];
 	Collider colliders[MAX_COLLIDERS];
 };
diff --git a/drivers/gles3/storage/material_storage.cpp b/drivers/gles3/storage/material_storage.cpp
index 016f55436859..fee2fa5ae8f0 100644
--- a/drivers/gles3/storage/material_storage.cpp
+++ b/drivers/gles3/storage/material_storage.cpp
@@ -1395,6 +1395,7 @@ MaterialStorage::MaterialStorage() {
 		actions.renames["DELTA"] = "local_delta";
 		actions.renames["NUMBER"] = "particle_number";
 		actions.renames["INDEX"] = "index";
+		actions.renames["AMOUNT_RATIO"] = "amount_ratio";
 		//actions.renames["GRAVITY"] = "current_gravity";
 		actions.renames["EMISSION_TRANSFORM"] = "emission_transform";
 		actions.renames["RANDOM_SEED"] = "random_seed";
@@ -1407,6 +1408,8 @@ MaterialStorage::MaterialStorage() {
 		actions.renames["COLLISION_NORMAL"] = "collision_normal";
 		actions.renames["COLLISION_DEPTH"] = "collision_depth";
 		actions.renames["ATTRACTOR_FORCE"] = "attractor_force";
+		actions.renames["EMITTER_VELOCITY"] = "emitter_velocity";
+		actions.renames["INTERPOLATE_TO_END"] = "interp_to_end";
 
 		// These are unsupported, but may be used by users. To avoid compile time overhead, we add the stub only when used.
 		actions.renames["FLAG_EMIT_POSITION"] = "uint(1)";
diff --git a/drivers/gles3/storage/particles_storage.cpp b/drivers/gles3/storage/particles_storage.cpp
index 0a6f02511cd2..fe8b4d054fee 100644
--- a/drivers/gles3/storage/particles_storage.cpp
+++ b/drivers/gles3/storage/particles_storage.cpp
@@ -190,6 +190,13 @@ void ParticlesStorage::particles_set_amount(RID p_particles, int p_amount) {
 	particles->dependency.changed_notify(Dependency::DEPENDENCY_CHANGED_PARTICLES);
 }
 
+void ParticlesStorage::particles_set_amount_ratio(RID p_particles, float p_amount_ratio) {
+	Particles *particles = particles_owner.get_or_null(p_particles);
+	ERR_FAIL_NULL(particles);
+
+	particles->amount_ratio = p_amount_ratio;
+}
+
 void ParticlesStorage::particles_set_lifetime(RID p_particles, double p_lifetime) {
 	Particles *particles = particles_owner.get_or_null(p_particles);
 	ERR_FAIL_NULL(particles);
@@ -431,6 +438,20 @@ void ParticlesStorage::particles_set_emission_transform(RID p_particles, const T
 	particles->emission_transform = p_transform;
 }
 
+void ParticlesStorage::particles_set_emitter_velocity(RID p_particles, const Vector3 &p_velocity) {
+	Particles *particles = particles_owner.get_or_null(p_particles);
+	ERR_FAIL_NULL(particles);
+
+	particles->emitter_velocity = p_velocity;
+}
+
+void ParticlesStorage::particles_set_interp_to_end(RID p_particles, float p_interp) {
+	Particles *particles = particles_owner.get_or_null(p_particles);
+	ERR_FAIL_NULL(particles);
+
+	particles->interp_to_end = p_interp;
+}
+
 int ParticlesStorage::particles_get_draw_passes(RID p_particles) const {
 	const Particles *particles = particles_owner.get_or_null(p_particles);
 	ERR_FAIL_NULL_V(particles, 0);
@@ -507,9 +528,13 @@ void ParticlesStorage::_particles_process(Particles *p_particles, double p_delta
 
 	frame_params.cycle = p_particles->cycle_number;
 	frame_params.frame = p_particles->frame_counter++;
-	frame_params.pad0 = 0;
+	frame_params.amount_ratio = p_particles->amount_ratio;
 	frame_params.pad1 = 0;
 	frame_params.pad2 = 0;
+	frame_params.interp_to_end = p_particles->interp_to_end;
+	frame_params.emitter_velocity[0] = p_particles->emitter_velocity.x;
+	frame_params.emitter_velocity[1] = p_particles->emitter_velocity.y;
+	frame_params.emitter_velocity[2] = p_particles->emitter_velocity.z;
 
 	{ //collision and attractors
 
diff --git a/drivers/gles3/storage/particles_storage.h b/drivers/gles3/storage/particles_storage.h
index 5146dc53295a..d4c4b497fffa 100644
--- a/drivers/gles3/storage/particles_storage.h
+++ b/drivers/gles3/storage/particles_storage.h
@@ -128,7 +128,7 @@ class ParticlesStorage : public RendererParticlesStorage {
 		float delta;
 
 		float particle_size;
-		float pad0;
+		float amount_ratio;
 		float pad1;
 		float pad2;
 
@@ -138,6 +138,8 @@ class ParticlesStorage : public RendererParticlesStorage {
 		uint32_t frame;
 
 		float emission_transform[16];
+		float emitter_velocity[3];
+		float interp_to_end;
 
 		Attractor attractors[MAX_ATTRACTORS];
 		Collider colliders[MAX_COLLIDERS];
@@ -149,6 +151,7 @@ class ParticlesStorage : public RendererParticlesStorage {
 		double inactive_time = 0.0;
 		bool emitting = false;
 		bool one_shot = false;
+		float amount_ratio = 1.0;
 		int amount = 0;
 		double lifetime = 1.0;
 		double pre_process_time = 0.0;
@@ -229,6 +232,8 @@ class ParticlesStorage : public RendererParticlesStorage {
 		bool clear = true;
 
 		Transform3D emission_transform;
+		Vector3 emitter_velocity;
+		float interp_to_end;
 
 		HashSet collisions;
 
@@ -313,6 +318,7 @@ class ParticlesStorage : public RendererParticlesStorage {
 	virtual void particles_emit(RID p_particles, const Transform3D &p_transform, const Vector3 &p_velocity, const Color &p_color, const Color &p_custom, uint32_t p_emit_flags) override;
 	virtual void particles_set_emitting(RID p_particles, bool p_emitting) override;
 	virtual void particles_set_amount(RID p_particles, int p_amount) override;
+	virtual void particles_set_amount_ratio(RID p_particles, float p_amount_ratio) override;
 	virtual void particles_set_lifetime(RID p_particles, double p_lifetime) override;
 	virtual void particles_set_one_shot(RID p_particles, bool p_one_shot) override;
 	virtual void particles_set_pre_process_time(RID p_particles, double p_time) override;
@@ -347,6 +353,8 @@ class ParticlesStorage : public RendererParticlesStorage {
 	virtual AABB particles_get_aabb(RID p_particles) const override;
 
 	virtual void particles_set_emission_transform(RID p_particles, const Transform3D &p_transform) override;
+	virtual void particles_set_emitter_velocity(RID p_particles, const Vector3 &p_velocity) override;
+	virtual void particles_set_interp_to_end(RID p_particles, float p_interp) override;
 
 	virtual bool particles_get_emitting(RID p_particles) override;
 	virtual int particles_get_draw_passes(RID p_particles) const override;
diff --git a/misc/extension_api_validation/4.1-stable.expected b/misc/extension_api_validation/4.1-stable.expected
index b3b1f3657361..a9720d2a886d 100644
--- a/misc/extension_api_validation/4.1-stable.expected
+++ b/misc/extension_api_validation/4.1-stable.expected
@@ -287,3 +287,9 @@ Validate extension JSON: Error: Field 'classes/RenderingDevice/methods/shader_ge
 Validate extension JSON: Error: Field 'classes/SurfaceTool/methods/commit/arguments/1': meta changed value in new API, from "uint32" to "uint64".
 
 Surface format was increased to 64 bits from 32 bits. Compatibility methods registered. 
+
+GH-79527
+--------
+Validate extension JSON: Error: Field 'classes/ParticleProcessMaterial/properties/orbit_velocity_curve': type changed value in new API, from "CurveTexture" to "CurveTexture,CurveXYZTexture".
+
+Added accepted curve type from only CurveTexture to CurveXYZTexture.
diff --git a/scene/2d/gpu_particles_2d.cpp b/scene/2d/gpu_particles_2d.cpp
index 67b14692a236..ee33ff88d4eb 100644
--- a/scene/2d/gpu_particles_2d.cpp
+++ b/scene/2d/gpu_particles_2d.cpp
@@ -192,6 +192,11 @@ void GPUParticles2D::set_trail_section_subdivisions(int p_subdivisions) {
 	queue_redraw();
 }
 
+void GPUParticles2D::set_interp_to_end(float p_interp) {
+	interp_to_end_factor = CLAMP(p_interp, 0.0, 1.0);
+	RS::get_singleton()->particles_set_interp_to_end(particles, interp_to_end_factor);
+}
+
 #ifdef TOOLS_ENABLED
 void GPUParticles2D::set_show_visibility_rect(bool p_show_visibility_rect) {
 	show_visibility_rect = p_show_visibility_rect;
@@ -318,6 +323,10 @@ bool GPUParticles2D::get_interpolate() const {
 	return interpolate;
 }
 
+float GPUParticles2D::get_interp_to_end() const {
+	return interp_to_end_factor;
+}
+
 PackedStringArray GPUParticles2D::get_configuration_warnings() const {
 	PackedStringArray warnings = Node2D::get_configuration_warnings();
 
@@ -423,6 +432,15 @@ NodePath GPUParticles2D::get_sub_emitter() const {
 	return sub_emitter;
 }
 
+void GPUParticles2D::set_amount_ratio(float p_ratio) {
+	amount_ratio = p_ratio;
+	RenderingServer::get_singleton()->particles_set_amount_ratio(particles, p_ratio);
+}
+
+float GPUParticles2D::get_amount_ratio() const {
+	return amount_ratio;
+}
+
 void GPUParticles2D::restart() {
 	RS::get_singleton()->particles_restart(particles);
 	RS::get_singleton()->particles_set_emitting(particles, true);
@@ -670,6 +688,8 @@ void GPUParticles2D::_notification(int p_what) {
 			} else {
 				RS::get_singleton()->particles_set_speed_scale(particles, 0);
 			}
+			set_process_internal(true);
+			previous_position = get_global_position();
 		} break;
 
 		case NOTIFICATION_EXIT_TREE: {
@@ -692,6 +712,12 @@ void GPUParticles2D::_notification(int p_what) {
 		} break;
 
 		case NOTIFICATION_INTERNAL_PROCESS: {
+			RS::get_singleton()->particles_set_emitter_velocity(particles,
+					Vector3((get_global_position() - previous_position).x,
+							(get_global_position() - previous_position).y,
+							0.0) /
+							get_process_delta_time());
+			previous_position = get_global_position();
 			if (one_shot) {
 				time += get_process_delta_time();
 				if (time > emission_time) {
@@ -730,6 +756,7 @@ void GPUParticles2D::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_process_material", "material"), &GPUParticles2D::set_process_material);
 	ClassDB::bind_method(D_METHOD("set_speed_scale", "scale"), &GPUParticles2D::set_speed_scale);
 	ClassDB::bind_method(D_METHOD("set_collision_base_size", "size"), &GPUParticles2D::set_collision_base_size);
+	ClassDB::bind_method(D_METHOD("set_interp_to_end", "interp"), &GPUParticles2D::set_interp_to_end);
 
 	ClassDB::bind_method(D_METHOD("is_emitting"), &GPUParticles2D::is_emitting);
 	ClassDB::bind_method(D_METHOD("get_amount"), &GPUParticles2D::get_amount);
@@ -746,6 +773,7 @@ void GPUParticles2D::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_process_material"), &GPUParticles2D::get_process_material);
 	ClassDB::bind_method(D_METHOD("get_speed_scale"), &GPUParticles2D::get_speed_scale);
 	ClassDB::bind_method(D_METHOD("get_collision_base_size"), &GPUParticles2D::get_collision_base_size);
+	ClassDB::bind_method(D_METHOD("get_interp_to_end"), &GPUParticles2D::get_interp_to_end);
 
 	ClassDB::bind_method(D_METHOD("set_draw_order", "order"), &GPUParticles2D::set_draw_order);
 	ClassDB::bind_method(D_METHOD("get_draw_order"), &GPUParticles2D::get_draw_order);
@@ -776,11 +804,15 @@ void GPUParticles2D::_bind_methods() {
 
 	ClassDB::bind_method(D_METHOD("convert_from_particles", "particles"), &GPUParticles2D::convert_from_particles);
 
+	ClassDB::bind_method(D_METHOD("set_amount_ratio", "ratio"), &GPUParticles2D::set_amount_ratio);
+	ClassDB::bind_method(D_METHOD("get_amount_ratio"), &GPUParticles2D::get_amount_ratio);
+
 	ADD_SIGNAL(MethodInfo("finished"));
 
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "emitting"), "set_emitting", "is_emitting");
 	ADD_PROPERTY_DEFAULT("emitting", true); // Workaround for doctool in headless mode, as dummy rasterizer always returns false.
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "amount", PROPERTY_HINT_RANGE, "1,1000000,1,exp"), "set_amount", "get_amount");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "amount_ratio", PROPERTY_HINT_RANGE, "0,1,0.0001"), "set_amount_ratio", "get_amount_ratio");
 	ADD_PROPERTY(PropertyInfo(Variant::NODE_PATH, "sub_emitter", PROPERTY_HINT_NODE_PATH_VALID_TYPES, "GPUParticles2D"), "set_sub_emitter", "get_sub_emitter");
 	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "process_material", PROPERTY_HINT_RESOURCE_TYPE, "ShaderMaterial,ParticleProcessMaterial"), "set_process_material", "get_process_material");
 	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "texture", PROPERTY_HINT_RESOURCE_TYPE, "Texture2D"), "set_texture", "get_texture");
@@ -794,6 +826,7 @@ void GPUParticles2D::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "fixed_fps", PROPERTY_HINT_RANGE, "0,1000,1,suffix:FPS"), "set_fixed_fps", "get_fixed_fps");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "interpolate"), "set_interpolate", "get_interpolate");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "fract_delta"), "set_fractional_delta", "get_fractional_delta");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "interp_to_end", PROPERTY_HINT_RANGE, "0.00,1.0,0.001"), "set_interp_to_end", "get_interp_to_end");
 	ADD_GROUP("Collision", "collision_");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "collision_base_size", PROPERTY_HINT_RANGE, "0,128,0.01,or_greater"), "set_collision_base_size", "get_collision_base_size");
 	ADD_GROUP("Drawing", "");
@@ -829,6 +862,7 @@ GPUParticles2D::GPUParticles2D() {
 	set_emitting(true);
 	set_one_shot(false);
 	set_amount(8);
+	set_amount_ratio(1.0);
 	set_lifetime(1);
 	set_fixed_fps(0);
 	set_fractional_delta(true);
diff --git a/scene/2d/gpu_particles_2d.h b/scene/2d/gpu_particles_2d.h
index 3a342e2c22a0..40831cd30e8c 100644
--- a/scene/2d/gpu_particles_2d.h
+++ b/scene/2d/gpu_particles_2d.h
@@ -52,6 +52,7 @@ class GPUParticles2D : public Node2D {
 	bool signal_canceled = false;
 	bool one_shot = false;
 	int amount = 0;
+	float amount_ratio = 1.0;
 	double lifetime = 0.0;
 	double pre_process_time = 0.0;
 	real_t explosiveness_ratio = 0.0;
@@ -62,6 +63,8 @@ class GPUParticles2D : public Node2D {
 	int fixed_fps = 0;
 	bool fractional_delta = false;
 	bool interpolate = true;
+	float interp_to_end_factor = 0;
+	Vector2 previous_position;
 #ifdef TOOLS_ENABLED
 	bool show_visibility_rect = false;
 #endif
@@ -114,6 +117,7 @@ class GPUParticles2D : public Node2D {
 	void set_trail_lifetime(double p_seconds);
 	void set_trail_sections(int p_sections);
 	void set_trail_section_subdivisions(int p_subdivisions);
+	void set_interp_to_end(float p_interp);
 
 #ifdef TOOLS_ENABLED
 	void set_show_visibility_rect(bool p_show_visibility_rect);
@@ -136,6 +140,7 @@ class GPUParticles2D : public Node2D {
 	double get_trail_lifetime() const;
 	int get_trail_sections() const;
 	int get_trail_section_subdivisions() const;
+	float get_interp_to_end() const;
 
 	void set_fixed_fps(int p_count);
 	int get_fixed_fps() const;
@@ -152,6 +157,9 @@ class GPUParticles2D : public Node2D {
 	void set_texture(const Ref &p_texture);
 	Ref get_texture() const;
 
+	void set_amount_ratio(float p_ratio);
+	float get_amount_ratio() const;
+
 	PackedStringArray get_configuration_warnings() const override;
 
 	void set_sub_emitter(const NodePath &p_path);
diff --git a/scene/3d/gpu_particles_3d.cpp b/scene/3d/gpu_particles_3d.cpp
index 12f13bee2f7c..fc84b3308ebc 100644
--- a/scene/3d/gpu_particles_3d.cpp
+++ b/scene/3d/gpu_particles_3d.cpp
@@ -61,6 +61,8 @@ void GPUParticles3D::set_emitting(bool p_emitting) {
 		} else {
 			set_process_internal(false);
 		}
+	} else {
+		set_process_internal(true);
 	}
 
 	emitting = p_emitting;
@@ -79,20 +81,20 @@ void GPUParticles3D::set_lifetime(double p_lifetime) {
 	RS::get_singleton()->particles_set_lifetime(particles, lifetime);
 }
 
+void GPUParticles3D::set_interp_to_end(float p_interp) {
+	interp_to_end_factor = CLAMP(p_interp, 0.0, 1.0);
+	RS::get_singleton()->particles_set_interp_to_end(particles, interp_to_end_factor);
+}
+
 void GPUParticles3D::set_one_shot(bool p_one_shot) {
 	one_shot = p_one_shot;
 	RS::get_singleton()->particles_set_one_shot(particles, one_shot);
 
 	if (is_emitting()) {
-		set_process_internal(true);
 		if (!one_shot) {
 			RenderingServer::get_singleton()->particles_restart(particles);
 		}
 	}
-
-	if (!one_shot) {
-		set_process_internal(false);
-	}
 }
 
 void GPUParticles3D::set_pre_process_time(double p_time) {
@@ -154,6 +156,10 @@ double GPUParticles3D::get_lifetime() const {
 	return lifetime;
 }
 
+float GPUParticles3D::get_interp_to_end() const {
+	return interp_to_end_factor;
+}
+
 bool GPUParticles3D::get_one_shot() const {
 	return one_shot;
 }
@@ -401,9 +407,7 @@ void GPUParticles3D::restart() {
 	time = 0;
 	emission_time = lifetime * (1 - explosiveness_ratio);
 	active_time = lifetime * (2 - explosiveness_ratio);
-	if (one_shot) {
-		set_process_internal(true);
-	}
+	set_process_internal(true);
 }
 
 AABB GPUParticles3D::capture_aabb() const {
@@ -456,6 +460,9 @@ void GPUParticles3D::_notification(int p_what) {
 		// Use internal process when emitting and one_shot is on so that when
 		// the shot ends the editor can properly update.
 		case NOTIFICATION_INTERNAL_PROCESS: {
+			RS::get_singleton()->particles_set_emitter_velocity(particles, (get_global_position() - previous_position) / get_process_delta_time());
+			previous_position = get_global_position();
+
 			if (one_shot) {
 				time += get_process_delta_time();
 				if (time > emission_time) {
@@ -477,6 +484,7 @@ void GPUParticles3D::_notification(int p_what) {
 		} break;
 
 		case NOTIFICATION_ENTER_TREE: {
+			set_process_internal(false);
 			if (sub_emitter != NodePath()) {
 				_attach_sub_emitter();
 			}
@@ -485,6 +493,8 @@ void GPUParticles3D::_notification(int p_what) {
 			} else {
 				RS::get_singleton()->particles_set_speed_scale(particles, 0);
 			}
+			previous_position = get_global_transform().origin;
+			set_process_internal(true);
 		} break;
 
 		case NOTIFICATION_EXIT_TREE: {
@@ -641,6 +651,15 @@ void GPUParticles3D::convert_from_particles(Node *p_particles) {
 #undef CONVERT_PARAM
 }
 
+void GPUParticles3D::set_amount_ratio(float p_ratio) {
+	amount_ratio = p_ratio;
+	RS::get_singleton()->particles_set_amount_ratio(particles, p_ratio);
+}
+
+float GPUParticles3D::get_amount_ratio() const {
+	return amount_ratio;
+}
+
 void GPUParticles3D::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_emitting", "emitting"), &GPUParticles3D::set_emitting);
 	ClassDB::bind_method(D_METHOD("set_amount", "amount"), &GPUParticles3D::set_amount);
@@ -657,6 +676,7 @@ void GPUParticles3D::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_process_material", "material"), &GPUParticles3D::set_process_material);
 	ClassDB::bind_method(D_METHOD("set_speed_scale", "scale"), &GPUParticles3D::set_speed_scale);
 	ClassDB::bind_method(D_METHOD("set_collision_base_size", "size"), &GPUParticles3D::set_collision_base_size);
+	ClassDB::bind_method(D_METHOD("set_interp_to_end", "interp"), &GPUParticles3D::set_interp_to_end);
 
 	ClassDB::bind_method(D_METHOD("is_emitting"), &GPUParticles3D::is_emitting);
 	ClassDB::bind_method(D_METHOD("get_amount"), &GPUParticles3D::get_amount);
@@ -673,6 +693,7 @@ void GPUParticles3D::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_process_material"), &GPUParticles3D::get_process_material);
 	ClassDB::bind_method(D_METHOD("get_speed_scale"), &GPUParticles3D::get_speed_scale);
 	ClassDB::bind_method(D_METHOD("get_collision_base_size"), &GPUParticles3D::get_collision_base_size);
+	ClassDB::bind_method(D_METHOD("get_interp_to_end"), &GPUParticles3D::get_interp_to_end);
 
 	ClassDB::bind_method(D_METHOD("set_draw_order", "order"), &GPUParticles3D::set_draw_order);
 
@@ -706,14 +727,19 @@ void GPUParticles3D::_bind_methods() {
 
 	ClassDB::bind_method(D_METHOD("convert_from_particles", "particles"), &GPUParticles3D::convert_from_particles);
 
+	ClassDB::bind_method(D_METHOD("set_amount_ratio", "ratio"), &GPUParticles3D::set_amount_ratio);
+	ClassDB::bind_method(D_METHOD("get_amount_ratio"), &GPUParticles3D::get_amount_ratio);
+
 	ADD_SIGNAL(MethodInfo("finished"));
 
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "emitting"), "set_emitting", "is_emitting");
 	ADD_PROPERTY_DEFAULT("emitting", true); // Workaround for doctool in headless mode, as dummy rasterizer always returns false.
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "amount", PROPERTY_HINT_RANGE, "1,1000000,1,exp"), "set_amount", "get_amount");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "amount_ratio", PROPERTY_HINT_RANGE, "0,1,0.0001"), "set_amount_ratio", "get_amount_ratio");
 	ADD_PROPERTY(PropertyInfo(Variant::NODE_PATH, "sub_emitter", PROPERTY_HINT_NODE_PATH_VALID_TYPES, "GPUParticles3D"), "set_sub_emitter", "get_sub_emitter");
 	ADD_GROUP("Time", "");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "lifetime", PROPERTY_HINT_RANGE, "0.01,600.0,0.01,or_greater,exp,suffix:s"), "set_lifetime", "get_lifetime");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "interp_to_end", PROPERTY_HINT_RANGE, "0.00,1.0,0.01"), "set_interp_to_end", "get_interp_to_end");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "one_shot"), "set_one_shot", "get_one_shot");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "preprocess", PROPERTY_HINT_RANGE, "0.00,600.0,0.01,exp,suffix:s"), "set_pre_process_time", "get_pre_process_time");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "speed_scale", PROPERTY_HINT_RANGE, "0,64,0.01"), "set_speed_scale", "get_speed_scale");
@@ -767,6 +793,7 @@ GPUParticles3D::GPUParticles3D() {
 	one_shot = false; // Needed so that set_emitting doesn't access uninitialized values
 	set_emitting(true);
 	set_one_shot(false);
+	set_amount_ratio(1.0);
 	set_amount(8);
 	set_lifetime(1);
 	set_fixed_fps(30);
diff --git a/scene/3d/gpu_particles_3d.h b/scene/3d/gpu_particles_3d.h
index f3df4f1929e1..ae9349817c44 100644
--- a/scene/3d/gpu_particles_3d.h
+++ b/scene/3d/gpu_particles_3d.h
@@ -65,6 +65,7 @@ class GPUParticles3D : public GeometryInstance3D {
 	bool signal_canceled = false;
 	bool one_shot = false;
 	int amount = 0;
+	float amount_ratio = 1.0;
 	double lifetime = 0.0;
 	double pre_process_time = 0.0;
 	real_t explosiveness_ratio = 0.0;
@@ -93,6 +94,8 @@ class GPUParticles3D : public GeometryInstance3D {
 	double time = 0.0;
 	double emission_time = 0.0;
 	double active_time = 0.0;
+	float interp_to_end_factor = 0;
+	Vector3 previous_position;
 
 	void _attach_sub_emitter();
 
@@ -120,9 +123,11 @@ class GPUParticles3D : public GeometryInstance3D {
 	void set_collision_base_size(real_t p_ratio);
 	void set_trail_enabled(bool p_enabled);
 	void set_trail_lifetime(double p_seconds);
+	void set_interp_to_end(float p_interp);
 
 	bool is_emitting() const;
 	int get_amount() const;
+
 	double get_lifetime() const;
 	bool get_one_shot() const;
 	double get_pre_process_time() const;
@@ -135,6 +140,10 @@ class GPUParticles3D : public GeometryInstance3D {
 	real_t get_collision_base_size() const;
 	bool is_trail_enabled() const;
 	double get_trail_lifetime() const;
+	float get_interp_to_end() const;
+
+	void set_amount_ratio(float p_ratio);
+	float get_amount_ratio() const;
 
 	void set_fixed_fps(int p_count);
 	int get_fixed_fps() const;
diff --git a/scene/resources/particle_process_material.cpp b/scene/resources/particle_process_material.cpp
index dbb286c6e7f8..3e710e1f274a 100644
--- a/scene/resources/particle_process_material.cpp
+++ b/scene/resources/particle_process_material.cpp
@@ -50,6 +50,7 @@ void ParticleProcessMaterial::init_shaders() {
 	shader_names->initial_angle_min = "initial_angle_min";
 	shader_names->angular_velocity_min = "angular_velocity_min";
 	shader_names->orbit_velocity_min = "orbit_velocity_min";
+	shader_names->radial_velocity_min = "radial_velocity_min";
 	shader_names->linear_accel_min = "linear_accel_min";
 	shader_names->radial_accel_min = "radial_accel_min";
 	shader_names->tangent_accel_min = "tangent_accel_min";
@@ -58,11 +59,14 @@ void ParticleProcessMaterial::init_shaders() {
 	shader_names->hue_variation_min = "hue_variation_min";
 	shader_names->anim_speed_min = "anim_speed_min";
 	shader_names->anim_offset_min = "anim_offset_min";
+	shader_names->directional_velocity_min = "directional_velocity_min";
+	shader_names->scale_over_velocity_min = "scale_over_velocity_min";
 
 	shader_names->initial_linear_velocity_max = "initial_linear_velocity_max";
 	shader_names->initial_angle_max = "initial_angle_max";
 	shader_names->angular_velocity_max = "angular_velocity_max";
 	shader_names->orbit_velocity_max = "orbit_velocity_max";
+	shader_names->radial_velocity_max = "radial_velocity_max";
 	shader_names->linear_accel_max = "linear_accel_max";
 	shader_names->radial_accel_max = "radial_accel_max";
 	shader_names->tangent_accel_max = "tangent_accel_max";
@@ -71,22 +75,32 @@ void ParticleProcessMaterial::init_shaders() {
 	shader_names->hue_variation_max = "hue_variation_max";
 	shader_names->anim_speed_max = "anim_speed_max";
 	shader_names->anim_offset_max = "anim_offset_max";
+	shader_names->directional_velocity_max = "directional_velocity_max";
+	shader_names->scale_over_velocity_max = "scale_over_velocity_max";
 
 	shader_names->angle_texture = "angle_texture";
 	shader_names->angular_velocity_texture = "angular_velocity_texture";
-	shader_names->orbit_velocity_texture = "orbit_velocity_texture";
+	shader_names->orbit_velocity_texture = "orbit_velocity_curve";
+	shader_names->radial_velocity_texture = "radial_velocity_curve";
 	shader_names->linear_accel_texture = "linear_accel_texture";
 	shader_names->radial_accel_texture = "radial_accel_texture";
 	shader_names->tangent_accel_texture = "tangent_accel_texture";
 	shader_names->damping_texture = "damping_texture";
-	shader_names->scale_texture = "scale_texture";
+	shader_names->scale_texture = "scale_curve";
 	shader_names->hue_variation_texture = "hue_variation_texture";
 	shader_names->anim_speed_texture = "anim_speed_texture";
 	shader_names->anim_offset_texture = "anim_offset_texture";
+	shader_names->directional_velocity_texture = "directional_velocity_curve";
+	shader_names->scale_over_velocity_texture = "scale_over_velocity_curve";
 
 	shader_names->color = "color_value";
 	shader_names->color_ramp = "color_ramp";
+	shader_names->alpha_ramp = "alpha_curve";
+	shader_names->emission_ramp = "emission_curve";
 	shader_names->color_initial_ramp = "color_initial_ramp";
+	shader_names->velocity_limit_curve = "velocity_limit_curve";
+	shader_names->inherit_emitter_velocity_ratio = "inherit_emitter_velocity_ratio";
+	shader_names->velocity_pivot = "velocity_pivot";
 
 	shader_names->emission_sphere_radius = "emission_sphere_radius";
 	shader_names->emission_box_extents = "emission_box_extents";
@@ -98,6 +112,8 @@ void ParticleProcessMaterial::init_shaders() {
 	shader_names->emission_ring_height = "emission_ring_height";
 	shader_names->emission_ring_radius = "emission_ring_radius";
 	shader_names->emission_ring_inner_radius = "emission_ring_inner_radius";
+	shader_names->emission_shape_offset = "emission_shape_offset";
+	shader_names->emission_shape_scale = "emission_shape_scale";
 
 	shader_names->turbulence_enabled = "turbulence_enabled";
 	shader_names->turbulence_noise_strength = "turbulence_noise_strength";
@@ -134,7 +150,7 @@ void ParticleProcessMaterial::_update_shader() {
 	dirty_materials->remove(&element);
 
 	MaterialKey mk = _compute_key();
-	if (mk.key == current_key.key) {
+	if (mk == current_key) {
 		return; //no update required in the end
 	}
 
@@ -160,6 +176,7 @@ void ParticleProcessMaterial::_update_shader() {
 	String code = "// NOTE: Shader automatically converted from " VERSION_NAME " " VERSION_FULL_CONFIG "'s ParticleProcessMaterial.\n\n";
 
 	code += "shader_type particles;\n";
+	code += "render_mode disable_velocity;\n";
 
 	if (collision_scale) {
 		code += "render_mode collision_use_scale;\n";
@@ -168,32 +185,61 @@ void ParticleProcessMaterial::_update_shader() {
 	code += "uniform vec3 direction;\n";
 	code += "uniform float spread;\n";
 	code += "uniform float flatness;\n";
+
+	code += "uniform float inherit_emitter_velocity_ratio = 0;\n";
+
 	code += "uniform float initial_linear_velocity_min;\n";
-	code += "uniform float initial_angle_min;\n";
+	code += "uniform float initial_linear_velocity_max;\n";
+
+	code += "uniform float directional_velocity_min;\n";
+	code += "uniform float directional_velocity_max;\n";
+
 	code += "uniform float angular_velocity_min;\n";
+	code += "uniform float angular_velocity_max;\n";
+
 	code += "uniform float orbit_velocity_min;\n";
+	code += "uniform float orbit_velocity_max;\n";
+
+	code += "uniform float radial_velocity_min;\n";
+	code += "uniform float radial_velocity_max;\n";
+
 	code += "uniform float linear_accel_min;\n";
+	code += "uniform float linear_accel_max;\n";
+
 	code += "uniform float radial_accel_min;\n";
+	code += "uniform float radial_accel_max;\n";
+
 	code += "uniform float tangent_accel_min;\n";
+	code += "uniform float tangent_accel_max;\n";
+
 	code += "uniform float damping_min;\n";
-	code += "uniform float scale_min;\n";
-	code += "uniform float hue_variation_min;\n";
-	code += "uniform float anim_speed_min;\n";
-	code += "uniform float anim_offset_min;\n";
+	code += "uniform float damping_max;\n";
 
-	code += "uniform float initial_linear_velocity_max;\n";
+	code += "uniform float initial_angle_min;\n";
 	code += "uniform float initial_angle_max;\n";
-	code += "uniform float angular_velocity_max;\n";
-	code += "uniform float orbit_velocity_max;\n";
-	code += "uniform float linear_accel_max;\n";
-	code += "uniform float radial_accel_max;\n";
-	code += "uniform float tangent_accel_max;\n";
-	code += "uniform float damping_max;\n";
+
+	code += "uniform float scale_min;\n";
 	code += "uniform float scale_max;\n";
+
+	code += "uniform float hue_variation_min;\n";
 	code += "uniform float hue_variation_max;\n";
+
+	code += "uniform float anim_speed_min;\n";
 	code += "uniform float anim_speed_max;\n";
+
+	code += "uniform float anim_offset_min;\n";
 	code += "uniform float anim_offset_max;\n";
+
 	code += "uniform float lifetime_randomness;\n";
+	code += "uniform vec3 emission_shape_offset = vec3(0.);\n";
+	code += "uniform vec3 emission_shape_scale = vec3(1.);\n";
+
+	code += "uniform vec3 velocity_pivot = vec3(0.);\n";
+
+	if (tex_parameters[PARAM_SCALE_OVER_VELOCITY].is_valid()) {
+		code += "uniform float scale_over_velocity_min = 0.0;\n";
+		code += "uniform float scale_over_velocity_max = 5.0;\n";
+	}
 
 	switch (emission_shape) {
 		case EMISSION_SHAPE_POINT: {
@@ -254,12 +300,18 @@ void ParticleProcessMaterial::_update_shader() {
 	if (color_initial_ramp.is_valid()) {
 		code += "uniform sampler2D color_initial_ramp : repeat_disable;\n";
 	}
+	if (alpha_curve.is_valid()) {
+		code += "uniform sampler2D alpha_curve : repeat_disable;\n";
+	}
+	if (emission_curve.is_valid()) {
+		code += "uniform sampler2D emission_curve : repeat_disable;\n";
+	}
 
 	if (tex_parameters[PARAM_INITIAL_LINEAR_VELOCITY].is_valid()) {
 		code += "uniform sampler2D linear_velocity_texture : repeat_disable;\n";
 	}
 	if (tex_parameters[PARAM_ORBIT_VELOCITY].is_valid()) {
-		code += "uniform sampler2D orbit_velocity_texture : repeat_disable;\n";
+		code += "uniform sampler2D orbit_velocity_curve : repeat_disable;\n";
 	}
 	if (tex_parameters[PARAM_ANGULAR_VELOCITY].is_valid()) {
 		code += "uniform sampler2D angular_velocity_texture : repeat_disable;\n";
@@ -280,16 +332,28 @@ void ParticleProcessMaterial::_update_shader() {
 		code += "uniform sampler2D angle_texture : repeat_disable;\n";
 	}
 	if (tex_parameters[PARAM_SCALE].is_valid()) {
-		code += "uniform sampler2D scale_texture : repeat_disable;\n";
+		code += "uniform sampler2D scale_curve : repeat_disable;\n";
 	}
 	if (tex_parameters[PARAM_HUE_VARIATION].is_valid()) {
-		code += "uniform sampler2D hue_variation_texture : repeat_disable;\n";
+		code += "uniform sampler2D hue_rot_curve : repeat_disable;\n";
 	}
 	if (tex_parameters[PARAM_ANIM_SPEED].is_valid()) {
-		code += "uniform sampler2D anim_speed_texture : repeat_disable;\n";
+		code += "uniform sampler2D animation_speed_curve : repeat_disable;\n";
 	}
 	if (tex_parameters[PARAM_ANIM_OFFSET].is_valid()) {
-		code += "uniform sampler2D anim_offset_texture : repeat_disable;\n";
+		code += "uniform sampler2D animation_offset_curve : repeat_disable;\n";
+	}
+	if (tex_parameters[PARAM_RADIAL_VELOCITY].is_valid()) {
+		code += "uniform sampler2D radial_velocity_curve : repeat_disable;\n";
+	}
+	if (tex_parameters[PARAM_SCALE_OVER_VELOCITY].is_valid()) {
+		code += "uniform sampler2D scale_over_velocity_curve : repeat_disable;\n";
+	}
+	if (tex_parameters[PARAM_DIRECTIONAL_VELOCITY].is_valid()) {
+		code += "uniform sampler2D directional_velocity_curve: repeat_disable;\n";
+	}
+	if (velocity_limit_curve.is_valid()) {
+		code += "uniform sampler2D velocity_limit_curve: repeat_disable;\n";
 	}
 
 	if (collision_mode == COLLISION_RIGID) {
@@ -390,6 +454,23 @@ void ParticleProcessMaterial::_update_shader() {
 		code += "	return noise_direction;\n";
 		code += "}\n";
 	}
+	code += "vec4 rotate_hue(vec4 current_color, float hue_rot_angle){\n";
+	code += "	float hue_rot_c = cos(hue_rot_angle);\n";
+	code += "	float hue_rot_s = sin(hue_rot_angle);\n";
+	code += "	mat4 hue_rot_mat = mat4(vec4(0.299, 0.587, 0.114, 0.0),\n";
+	code += "			vec4(0.299, 0.587, 0.114, 0.0),\n";
+	code += "			vec4(0.299, 0.587, 0.114, 0.0),\n";
+	code += "			vec4(0.000, 0.000, 0.000, 1.0)) +\n";
+	code += "		mat4(vec4(0.701, -0.587, -0.114, 0.0),\n";
+	code += "			vec4(-0.299, 0.413, -0.114, 0.0),\n";
+	code += "			vec4(-0.300, -0.588, 0.886, 0.0),\n";
+	code += "			vec4(0.000, 0.000, 0.000, 0.0)) * hue_rot_c +\n";
+	code += "		mat4(vec4(0.168, 0.330, -0.497, 0.0),\n";
+	code += "			vec4(-0.328, 0.035,  0.292, 0.0),\n";
+	code += "			vec4(1.250, -1.050, -0.203, 0.0),\n";
+	code += "			vec4(0.000, 0.000, 0.000, 0.0)) * hue_rot_s;\n";
+	code += "	return hue_rot_mat * current_color;\n";
+	code += "}\n";
 
 	//need a random function
 	code += "\n\n";
@@ -421,398 +502,528 @@ void ParticleProcessMaterial::_update_shader() {
 	code += "}\n";
 	code += "\n";
 
-	code += "void start() {\n";
-	code += "	uint base_number = NUMBER;\n";
-	code += "	uint alt_seed = hash(base_number + uint(1) + RANDOM_SEED);\n";
-	code += "	float angle_rand = rand_from_seed(alt_seed);\n";
-	code += "	float scale_rand = rand_from_seed(alt_seed);\n";
-	code += "	float hue_rot_rand = rand_from_seed(alt_seed);\n";
-	code += "	float anim_offset_rand = rand_from_seed(alt_seed);\n";
-	if (color_initial_ramp.is_valid()) {
-		code += "	float color_initial_rand = rand_from_seed(alt_seed);\n";
+	code += "struct DisplayParameters{\n";
+	code += "	vec3 scale;\n";
+	code += "	float hue_rotation;\n";
+	code += "	float animation_speed;\n";
+	code += "	float animation_offset;\n";
+	code += "	float lifetime;\n";
+	code += "	vec4 color;\n";
+	code += "};\n";
+	code += "\n";
+	code += "struct DynamicsParameters{\n";
+	code += "	float angle;\n";
+	code += "	float angular_velocity;\n";
+	code += "	float initial_velocity_multiplier;\n";
+	code += "	float directional_velocity;\n";
+	code += "	float radial_velocity;\n";
+	code += "	float orbit_velocity;\n";
+	if (turbulence_enabled) {
+		code += "	float turb_influence;\n";
+	}
+	code += "};\n";
+	code += "struct PhysicalParameters{\n";
+	code += "	float linear_accel;\n";
+	code += "	float radial_accel;\n";
+	code += "	float tangent_accel;\n";
+	code += "	float damping;\n";
+	code += "};\n";
+
+	code += "\n";
+	code += "void calculate_initial_physical_params(inout PhysicalParameters params, inout uint alt_seed){\n";
+	code += "	params.linear_accel = mix(linear_accel_min, linear_accel_min ,rand_from_seed(alt_seed));\n";
+	code += "	params.radial_accel = mix(radial_accel_min, radial_accel_min,rand_from_seed(alt_seed));\n";
+	code += "	params.tangent_accel = mix(tangent_accel_min, tangent_accel_max,rand_from_seed(alt_seed));\n";
+	code += "	params.damping = mix(damping_min, damping_max,rand_from_seed(alt_seed));\n";
+	code += "}\n";
+	code += "\n";
+	code += "void calculate_initial_dynamics_params(inout DynamicsParameters params,inout uint alt_seed){\n";
+	code += "	// -------------------- DO NOT REORDER OPERATIONS, IT BREAKS VISUAL COMPATIBILITY\n";
+	code += "	// -------------------- ADD NEW OPERATIONS AT THE BOTTOM\n";
+	code += "	params.angle = mix(initial_angle_min, initial_angle_max, rand_from_seed(alt_seed));\n";
+	code += "	params.angular_velocity = mix(angular_velocity_min, angular_velocity_max, rand_from_seed(alt_seed));\n";
+	code += "	params.initial_velocity_multiplier = mix(initial_linear_velocity_min, initial_linear_velocity_max,rand_from_seed(alt_seed));\n";
+	code += "	params.directional_velocity = mix(directional_velocity_min, directional_velocity_max,rand_from_seed(alt_seed));\n";
+	code += "	params.radial_velocity = mix(radial_velocity_min, radial_velocity_max,rand_from_seed(alt_seed));\n";
+	code += "	params.orbit_velocity = mix(orbit_velocity_min, orbit_velocity_max,rand_from_seed(alt_seed));\n";
+	if (turbulence_enabled) {
+		code += "   params.turb_influence = mix(turbulence_influence_min,turbulence_influence_max,rand_from_seed(alt_seed));\n";
 	}
+	code += "}\n";
+	code += "void calculate_initial_display_params(inout DisplayParameters params,inout uint alt_seed){\n";
+	code += "	// -------------------- DO NOT REORDER OPERATIONS, IT BREAKS VISUAL COMPATIBILITY\n";
+	code += "	// -------------------- ADD NEW OPERATIONS AT THE BOTTOM\n";
 	code += "	float pi = 3.14159;\n";
 	code += "	float degree_to_rad = pi / 180.0;\n";
-	code += "\n";
 
-	if (emission_shape == EMISSION_SHAPE_POINTS || emission_shape == EMISSION_SHAPE_DIRECTED_POINTS) {
+	code += "   params.scale = vec3(mix(scale_min, scale_max, rand_from_seed(alt_seed)));\n";
+	code += "   params.scale = sign(params.scale) * max(abs(params.scale), 0.001);\n";
+	code += "	params.hue_rotation =  pi * 2.0 * mix(hue_variation_min, hue_variation_max, rand_from_seed(alt_seed));\n";
+	code += "	params.animation_speed = mix(anim_speed_min, anim_speed_max, rand_from_seed(alt_seed));\n";
+	code += "	params.animation_offset = mix(anim_offset_min, anim_offset_max, rand_from_seed(alt_seed));\n";
+	code += "	params.lifetime = (1.0 - lifetime_randomness * rand_from_seed(alt_seed));\n";
+	code += "	params.color = color_value;\n";
+	if (color_initial_ramp.is_valid()) {
+		code += "	params.color = texture(color_initial_ramp, vec2(rand_from_seed(alt_seed)));\n";
+	}
+	if (emission_color_texture.is_valid() && (emission_shape == EMISSION_SHAPE_POINTS || emission_shape == EMISSION_SHAPE_DIRECTED_POINTS)) {
 		code += "	int point = min(emission_texture_point_count - 1, int(rand_from_seed(alt_seed) * float(emission_texture_point_count)));\n";
 		code += "	ivec2 emission_tex_size = textureSize(emission_texture_points, 0);\n";
 		code += "	ivec2 emission_tex_ofs = ivec2(point % emission_tex_size.x, point / emission_tex_size.x);\n";
+		code += "	parameters.color *= texelFetch(emission_texture_color, emission_tex_ofs, 0);\n";
 	}
-	if (tex_parameters[PARAM_ANGLE].is_valid()) {
-		code += "	float tex_angle = textureLod(angle_texture, vec2(0.0, 0.0), 0.0).r;\n";
-	} else {
-		code += "	float tex_angle = 1.0;\n";
-	}
+	code += "}\n";
 
-	if (tex_parameters[PARAM_ANIM_OFFSET].is_valid()) {
-		code += "	float tex_anim_offset = textureLod(anim_offset_texture, vec2(0.0, 0.0), 0.0).r;\n";
-	} else {
-		code += "	float tex_anim_offset = 1.0;\n";
+	// process display parameters that are bound solely by lifetime
+	code += "void process_display_param(inout DisplayParameters parameters, float lifetime){\n";
+	code += "	// compile-time add textures\n";
+	if (tex_parameters[PARAM_SCALE].is_valid()) {
+		code += "	parameters.scale *= texture(scale_curve, vec2(lifetime)).rgb;\n";
 	}
-
-	code += "	float spread_rad = spread * degree_to_rad;\n";
-
-	code += "	if (RESTART_VELOCITY) {\n";
-
-	if (tex_parameters[PARAM_INITIAL_LINEAR_VELOCITY].is_valid()) {
-		code += "		float tex_linear_velocity = textureLod(linear_velocity_texture, vec2(0.0, 0.0), 0.0).r;\n";
-	} else {
-		code += "		float tex_linear_velocity = 1.0;\n";
+	if (tex_parameters[PARAM_HUE_VARIATION].is_valid()) {
+		code += "	parameters.hue_rotation *= texture(hue_rot_curve, vec2(lifetime)).r;\n";
 	}
-
-	if (particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
-		code += "		{\n";
-		code += "			float angle1_rad = rand_from_seed_m1_p1(alt_seed) * spread_rad;\n";
-		code += "			angle1_rad += direction.x != 0.0 ? atan(direction.y, direction.x) : sign(direction.y) * (pi / 2.0);\n";
-		code += "			vec3 rot = vec3(cos(angle1_rad), sin(angle1_rad), 0.0);\n";
-		code += "			VELOCITY = rot * mix(initial_linear_velocity_min,initial_linear_velocity_max, rand_from_seed(alt_seed));\n";
-		code += "		}\n";
-
-	} else {
-		//initiate velocity spread in 3D
-		code += "		{\n";
-		code += "			float angle1_rad = rand_from_seed_m1_p1(alt_seed) * spread_rad;\n";
-		code += "			float angle2_rad = rand_from_seed_m1_p1(alt_seed) * spread_rad * (1.0 - flatness);\n";
-		code += "			vec3 direction_xz = vec3(sin(angle1_rad), 0.0, cos(angle1_rad));\n";
-		code += "			vec3 direction_yz = vec3(0.0, sin(angle2_rad), cos(angle2_rad));\n";
-		code += "			direction_yz.z = direction_yz.z / max(0.0001,sqrt(abs(direction_yz.z))); // better uniform distribution\n";
-		code += "			vec3 spread_direction = vec3(direction_xz.x * direction_yz.z, direction_yz.y, direction_xz.z * direction_yz.z);\n";
-		code += "			vec3 direction_nrm = length(direction) > 0.0 ? normalize(direction) : vec3(0.0, 0.0, 1.0);\n";
-		code += "			// rotate spread to direction\n";
-		code += "			vec3 binormal = cross(vec3(0.0, 1.0, 0.0), direction_nrm);\n";
-		code += "			if (length(binormal) < 0.0001) {\n";
-		code += "				// direction is parallel to Y. Choose Z as the binormal.\n";
-		code += "				binormal = vec3(0.0, 0.0, 1.0);\n";
-		code += "			}\n";
-		code += "			binormal = normalize(binormal);\n";
-		code += "			vec3 normal = cross(binormal, direction_nrm);\n";
-		code += "			spread_direction = binormal * spread_direction.x + normal * spread_direction.y + direction_nrm * spread_direction.z;\n";
-		code += "			VELOCITY = spread_direction * mix(initial_linear_velocity_min, initial_linear_velocity_max,rand_from_seed(alt_seed));\n";
-		code += "		}\n";
+	if (tex_parameters[PARAM_ANIM_OFFSET].is_valid()) {
+		code += "	parameters.animation_offset += texture(animation_offset_curve, vec2(lifetime)).r;\n";
 	}
-	code += "	}\n";
-
-	code += "	float base_angle = (tex_angle) * mix(initial_angle_min, initial_angle_max, angle_rand);\n";
-	code += "	CUSTOM.x = base_angle * degree_to_rad;\n"; // angle
-	code += "	CUSTOM.y = 0.0;\n"; // phase
-	code += "	CUSTOM.w = (1.0 - lifetime_randomness * rand_from_seed(alt_seed));\n";
-	code += "	CUSTOM.z = (tex_anim_offset) * mix(anim_offset_min, anim_offset_max, anim_offset_rand);\n\n"; // animation offset (0-1)
-
-	code += "	if (RESTART_ROT_SCALE) {\n";
-	code += "		TRANSFORM[0].xyz = vec3(1.0, 0.0, 0.0);\n";
-	code += "		TRANSFORM[1].xyz = vec3(0.0, 1.0, 0.0);\n";
-	code += "		TRANSFORM[2].xyz = vec3(0.0, 0.0, 1.0);\n";
-	code += "	}\n\n";
-
-	code += "	if (RESTART_POSITION) {\n";
-
-	switch (emission_shape) {
-		case EMISSION_SHAPE_POINT: {
-			//do none, identity (will later be multiplied by emission transform)
-			code += "		TRANSFORM[3].xyz = vec3(0.0, 0.0, 0.0);\n";
-		} break;
-		case EMISSION_SHAPE_SPHERE: {
-			code += "		float s = rand_from_seed(alt_seed) * 2.0 - 1.0;\n";
-			code += "		float t = rand_from_seed(alt_seed) * 2.0 * pi;\n";
-			code += "		float p = rand_from_seed(alt_seed);\n";
-			code += "		float radius = emission_sphere_radius * sqrt(1.0 - s * s);\n";
-			code += "		TRANSFORM[3].xyz = mix(vec3(0.0, 0.0, 0.0), vec3(radius * cos(t), radius * sin(t), emission_sphere_radius * s), p);\n";
-		} break;
-		case EMISSION_SHAPE_SPHERE_SURFACE: {
-			code += "		float s = rand_from_seed(alt_seed) * 2.0 - 1.0;\n";
-			code += "		float t = rand_from_seed(alt_seed) * 2.0 * pi;\n";
-			code += "		float radius = emission_sphere_radius * sqrt(1.0 - s * s);\n";
-			code += "		TRANSFORM[3].xyz = vec3(radius * cos(t), radius * sin(t), emission_sphere_radius * s);\n";
-		} break;
-		case EMISSION_SHAPE_BOX: {
-			code += "		TRANSFORM[3].xyz = vec3(rand_from_seed(alt_seed) * 2.0 - 1.0, rand_from_seed(alt_seed) * 2.0 - 1.0, rand_from_seed(alt_seed) * 2.0 - 1.0) * emission_box_extents;\n";
-		} break;
-		case EMISSION_SHAPE_POINTS:
-		case EMISSION_SHAPE_DIRECTED_POINTS: {
-			code += "		TRANSFORM[3].xyz = texelFetch(emission_texture_points, emission_tex_ofs, 0).xyz;\n";
-
-			if (emission_shape == EMISSION_SHAPE_DIRECTED_POINTS) {
-				if (particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
-					code += "		{\n";
-					code += "			mat2 rotm;";
-					code += "			rotm[0] = texelFetch(emission_texture_normal, emission_tex_ofs, 0).xy;\n";
-					code += "			rotm[1] = rotm[0].yx * vec2(1.0, -1.0);\n";
-					code += "			if (RESTART_VELOCITY) VELOCITY.xy = rotm * VELOCITY.xy;\n";
-					code += "		}\n";
-				} else {
-					code += "		{\n";
-					code += "			vec3 normal = texelFetch(emission_texture_normal, emission_tex_ofs, 0).xyz;\n";
-					code += "			vec3 v0 = abs(normal.z) < 0.999 ? vec3(0.0, 0.0, 1.0) : vec3(0.0, 1.0, 0.0);\n";
-					code += "			vec3 tangent = normalize(cross(v0, normal));\n";
-					code += "			vec3 bitangent = normalize(cross(tangent, normal));\n";
-					code += "			if (RESTART_VELOCITY) VELOCITY = mat3(tangent, bitangent, normal) * VELOCITY;\n";
-					code += "		}\n";
-				}
-			}
-		} break;
-		case EMISSION_SHAPE_RING: {
-			code += "		float ring_spawn_angle = rand_from_seed(alt_seed) * 2.0 * pi;\n";
-			code += "		float ring_random_radius = rand_from_seed(alt_seed) * (emission_ring_radius - emission_ring_inner_radius) + emission_ring_inner_radius;\n";
-			code += "		vec3 axis = normalize(emission_ring_axis);\n";
-			code += "		vec3 ortho_axis = vec3(0.0);\n";
-			code += "		if (axis == vec3(1.0, 0.0, 0.0)) {\n";
-			code += "			ortho_axis = cross(axis, vec3(0.0, 1.0, 0.0));\n";
-			code += "		} else {\n";
-			code += " 			ortho_axis = cross(axis, vec3(1.0, 0.0, 0.0));\n";
-			code += "		}\n";
-			code += "		ortho_axis = normalize(ortho_axis);\n";
-			code += "		float s = sin(ring_spawn_angle);\n";
-			code += "		float c = cos(ring_spawn_angle);\n";
-			code += "		float oc = 1.0 - c;\n";
-			code += "		ortho_axis = mat3(\n";
-			code += "			vec3(c + axis.x * axis.x * oc, axis.x * axis.y * oc - axis.z * s, axis.x * axis.z *oc + axis.y * s),\n";
-			code += "			vec3(axis.x * axis.y * oc + s * axis.z, c + axis.y * axis.y * oc, axis.y * axis.z * oc - axis.x * s),\n";
-			code += "			vec3(axis.z * axis.x * oc - axis.y * s, axis.z * axis.y * oc + axis.x * s, c + axis.z * axis.z * oc)\n";
-			code += "			) * ortho_axis;\n";
-			code += "		ortho_axis = normalize(ortho_axis);\n";
-			code += "		TRANSFORM[3].xyz = ortho_axis * ring_random_radius + (rand_from_seed(alt_seed) * emission_ring_height - emission_ring_height / 2.0) * axis;\n";
-		} break;
-		case EMISSION_SHAPE_MAX: { // Max value for validity check.
-			break;
-		}
+	if (tex_parameters[PARAM_ANIM_SPEED].is_valid()) {
+		code += "	parameters.animation_speed *= texture(animation_speed_curve, vec2(lifetime)).r;\n";
 	}
-	code += "	if (RESTART_VELOCITY) VELOCITY = (EMISSION_TRANSFORM * vec4(VELOCITY, 0.0)).xyz;\n";
-	// Apply noise/turbulence: initial displacement.
-	if (turbulence_enabled) {
-		code += "	vec3 noise_direction = get_noise_direction(TRANSFORM[3].xyz);\n";
-		code += "	float turb_init_displacement = mix(turbulence_initial_displacement_min, turbulence_initial_displacement_max, rand_from_seed(alt_seed));";
-		code += "	TRANSFORM[3].xyz += noise_direction * turb_init_displacement;\n";
+	if (color_ramp.is_valid()) {
+		code += "   parameters.color *= texture(color_ramp, vec2(lifetime));\n";
 	}
-	code += "	TRANSFORM = EMISSION_TRANSFORM * TRANSFORM;\n";
-	if (particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
-		code += "	VELOCITY.z = 0.0;\n";
-		code += "	TRANSFORM[3].z = 0.0;\n";
+	if (alpha_curve.is_valid()) {
+		code += "	parameters.color.a *= texture(alpha_curve, vec2(lifetime)).r;\n";
 	}
-	code += "	}\n";
-	code += "}\n\n";
-
-	code += "void process() {\n";
-	code += "	uint base_number = NUMBER;\n";
-	code += "	uint alt_seed = hash(base_number + uint(1) + RANDOM_SEED);\n";
-	code += "	float angle_rand = rand_from_seed(alt_seed);\n";
-	code += "	float scale_rand = rand_from_seed(alt_seed);\n";
-	code += "	float hue_rot_rand = rand_from_seed(alt_seed);\n";
-	code += "	float anim_offset_rand = rand_from_seed(alt_seed);\n";
-	if (color_initial_ramp.is_valid()) {
-		code += "	float color_initial_rand = rand_from_seed(alt_seed);\n";
+	code += "	parameters.color = rotate_hue(parameters.color, parameters.hue_rotation);\n";
+	if (emission_curve.is_valid()) {
+		code += "	parameters.color.rgb *= 1.0 + texture(emission_curve, vec2(lifetime)).r;\n";
 	}
+	code += "}\n";
+
+	code += "vec3 calculate_initial_position(inout uint alt_seed) {\n";
 	code += "	float pi = 3.14159;\n";
 	code += "	float degree_to_rad = pi / 180.0;\n";
-	code += "\n";
-
-	if (emission_shape == EMISSION_SHAPE_POINTS || emission_shape == EMISSION_SHAPE_DIRECTED_POINTS) {
-		code += "	int point = min(emission_texture_point_count - 1, int(rand_from_seed(alt_seed) * float(emission_texture_point_count)));\n";
-		code += "	ivec2 emission_tex_size = textureSize(emission_texture_points, 0);\n";
-		code += "	ivec2 emission_tex_ofs = ivec2(point % emission_tex_size.x, point / emission_tex_size.x);\n";
+	code += "	vec3 pos = vec3(0.);\n";
+	if (emission_shape == EMISSION_SHAPE_POINT) {
+		code += "	 pos = vec3(0.);\n";
 	}
-
-	code += "	CUSTOM.y += DELTA / LIFETIME;\n";
-	code += "	float tv = CUSTOM.y / CUSTOM.w;\n";
-	if (tex_parameters[PARAM_INITIAL_LINEAR_VELOCITY].is_valid()) {
-		code += "	float tex_linear_velocity = textureLod(linear_velocity_texture, vec2(tv, 0.0), 0.0).r;\n";
-	} else {
-		code += "	float tex_linear_velocity = 1.0;\n";
+	if (emission_shape == EMISSION_SHAPE_SPHERE) {
+		code += "		float s = rand_from_seed(alt_seed) * 2.0 - 1.0;\n";
+		code += "		float t = rand_from_seed(alt_seed) * 2.0 * pi;\n";
+		code += "		float p = rand_from_seed(alt_seed);\n";
+		code += "		float radius = emission_sphere_radius * sqrt(1.0 - s * s);\n";
+		code += "		pos = mix(vec3(0.0, 0.0, 0.0), vec3(radius * cos(t), radius * sin(t), emission_sphere_radius * s), p);\n";
 	}
 
-	if (particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
-		if (tex_parameters[PARAM_ORBIT_VELOCITY].is_valid()) {
-			code += "	float tex_orbit_velocity = textureLod(orbit_velocity_texture, vec2(tv, 0.0), 0.0).r;\n";
+	if (emission_shape == EMISSION_SHAPE_SPHERE_SURFACE) {
+		code += "		float s = rand_from_seed(alt_seed) * 2.0 - 1.0;\n";
+		code += "		float t = rand_from_seed(alt_seed) * 2.0 * pi;\n";
+		code += "		float radius = emission_sphere_radius * sqrt(1.0 - s * s);\n";
+		code += "		pos = vec3(radius * cos(t), radius * sin(t), emission_sphere_radius * s);\n";
+	}
+	if (emission_shape == EMISSION_SHAPE_BOX) {
+		code += "		pos = vec3(rand_from_seed(alt_seed) * 2.0 - 1.0, rand_from_seed(alt_seed) * 2.0 - 1.0, rand_from_seed(alt_seed) * 2.0 - 1.0) * emission_box_extents;\n";
+	}
+	if (emission_shape == EMISSION_SHAPE_POINTS || emission_shape == EMISSION_SHAPE_DIRECTED_POINTS) {
+		code += "		int point = min(emission_texture_point_count - 1, int(rand_from_seed(alt_seed) * float(emission_texture_point_count)));\n";
+		code += "		ivec2 emission_tex_size = textureSize(emission_texture_points, 0);\n";
+		code += "		ivec2 emission_tex_ofs = ivec2(point % emission_tex_size.x, point / emission_tex_size.x);\n";
+		code += "		pos = texelFetch(emission_texture_points, emission_tex_ofs, 0).xyz;\n";
+	}
+	if (emission_shape == EMISSION_SHAPE_RING) {
+		code += "		\n";
+		code += "		float ring_spawn_angle = rand_from_seed(alt_seed) * 2.0 * pi;\n";
+		code += "		float ring_random_radius = rand_from_seed(alt_seed) * (emission_ring_radius - emission_ring_inner_radius) + emission_ring_inner_radius;\n";
+		code += "		vec3 axis = normalize(emission_ring_axis);\n";
+		code += "		vec3 ortho_axis = vec3(0.0);\n";
+		code += "		if (axis == vec3(1.0, 0.0, 0.0)) {\n";
+		code += "			ortho_axis = cross(axis, vec3(0.0, 1.0, 0.0));\n";
+		code += "		} else {\n";
+		code += " 			ortho_axis = cross(axis, vec3(1.0, 0.0, 0.0));\n";
+		code += "		}\n";
+		code += "		ortho_axis = normalize(ortho_axis);\n";
+		code += "		float s = sin(ring_spawn_angle);\n";
+		code += "		float c = cos(ring_spawn_angle);\n";
+		code += "		float oc = 1.0 - c;\n";
+		code += "		ortho_axis = mat3(\n";
+		code += "			vec3(c + axis.x * axis.x * oc, axis.x * axis.y * oc - axis.z * s, axis.x * axis.z *oc + axis.y * s),\n";
+		code += "			vec3(axis.x * axis.y * oc + s * axis.z, c + axis.y * axis.y * oc, axis.y * axis.z * oc - axis.x * s),\n";
+		code += "			vec3(axis.z * axis.x * oc - axis.y * s, axis.z * axis.y * oc + axis.x * s, c + axis.z * axis.z * oc)\n";
+		code += "			) * ortho_axis;\n";
+		code += "		ortho_axis = normalize(ortho_axis);\n";
+		code += "		pos = ortho_axis * ring_random_radius + (rand_from_seed(alt_seed) * emission_ring_height - emission_ring_height / 2.0) * axis;\n";
+	}
+
+	code += "	return pos * emission_shape_scale + emission_shape_offset;\n";
+	code += "}\n";
+	code += "\n";
+	if (tex_parameters[PARAM_ORBIT_VELOCITY].is_valid() || particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
+		code += "vec3 process_orbit_displacement(DynamicsParameters param, float lifetime, inout uint alt_seed, mat4 transform, mat4 emission_transform,float delta, float total_lifetime){\n";
+		// No reason to run all these expensive calculation below if we have no orbit velocity
+		// HOWEVER
+		// May be a bad idea for fps consistency?
+		code += "if(abs(param.orbit_velocity) < 0.01){ return vec3(0.0);}\n";
+		code += "\n";
+		code += "	vec3 displacement = vec3(0.);\n";
+		code += "	float pi = 3.14159;\n";
+		code += "	float degree_to_rad = pi / 180.0;\n";
+		if (particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
+			code += "	float orbit_amount = param.orbit_velocity;\n";
+
+			if (tex_parameters[PARAM_ORBIT_VELOCITY].is_valid()) {
+				code += "   orbit_amount *= texture(orbit_velocity_curve, vec2(lifetime)).r;\n";
+			}
+			code += "	if (orbit_amount != 0.0) {\n";
+			code += "       vec3 pos = transform[3].xyz;\n";
+			code += "       vec3 org = emission_transform[3].xyz;\n";
+			code += "       vec3 diff = pos - org;\n";
+			code += "	     float ang = orbit_amount * delta * pi * 2.0;\n";
+			code += "	     mat2 rot = mat2(vec2(cos(ang), -sin(ang)), vec2(sin(ang), cos(ang)));\n";
+			code += "	     displacement.xy -= diff.xy;\n";
+			code += "        displacement.xy += rot * diff.xy;\n";
+			code += "	}\n";
 		} else {
-			code += "	float tex_orbit_velocity = 1.0;\n";
+			code += "	vec3 orbit_velocities = vec3(param.orbit_velocity);\n";
+			code += "   orbit_velocities *= texture(orbit_velocity_curve, vec2(lifetime)).rgb;\n";
+
+			code += "	orbit_velocities *= degree_to_rad;\n";
+			code += "	orbit_velocities *= delta/total_lifetime; // we wanna process those by the delta angle\n";
+			code += "	//vec3 local_velocity_pivot = ((emission_transform) * vec4(velocity_pivot,1.0)).xyz;\n";
+			code += "	// X axis\n";
+			code += "	vec3 local_pos = (inverse(emission_transform) * transform[3]).xyz;\n";
+			code += "	local_pos -= velocity_pivot;\n";
+			code += "	local_pos.x = 0.;\n";
+			code += "	mat3 x_rotation_mat = mat3(\n";
+			code += "		vec3(1.0,0.0,0.0),\n";
+			code += "		vec3(0.0, cos(orbit_velocities.x), sin(orbit_velocities.x)),\n";
+			code += "		vec3(0.0, -sin(orbit_velocities.x), cos(orbit_velocities.x))\n";
+			code += "	);\n";
+			code += "	vec3 new_pos = x_rotation_mat * local_pos;\n";
+			code += "	displacement = new_pos - local_pos;\n";
+			code += "\n";
+			code += "	// Y axis\n";
+			code += "	local_pos = (inverse(emission_transform) * transform[3]).xyz;\n";
+			code += "	local_pos -= velocity_pivot;\n";
+			code += "	local_pos.y = 0.;\n";
+			code += "	mat3 y_rotation_mat = mat3(\n";
+			code += "		vec3(cos(orbit_velocities.y), 0.0, -sin(orbit_velocities.y)),\n";
+			code += "		vec3(0.0, 1.0,0.0),\n";
+			code += "		vec3(sin(orbit_velocities.y), 0.0, cos(orbit_velocities.y))\n";
+			code += "	);\n";
+			code += "	new_pos = y_rotation_mat * local_pos;\n";
+			code += "	displacement += new_pos - local_pos;\n";
+			code += "	// z axis\n";
+			code += "\n";
+			code += "	local_pos = (inverse(emission_transform) * transform[3]).xyz;\n";
+			code += "	local_pos -= velocity_pivot;\n";
+			code += "	local_pos.z = 0.;\n";
+			code += "	mat3 z_rotation_mat = mat3(\n";
+			code += "		vec3(cos(orbit_velocities.z),-sin(orbit_velocities.z),0.0),\n";
+			code += "		vec3(-sin(orbit_velocities.z),cos(orbit_velocities.z), 0.0),\n";
+			code += "		vec3(0.0,0.0,1.0)\n";
+			code += "	);\n";
+			code += "	new_pos = z_rotation_mat * local_pos;\n";
+			code += "	displacement += new_pos - local_pos;\n";
+			code += "\n";
 		}
+		code += "	return (emission_transform * vec4(displacement, 0.0)).xyz;\n";
+		code += "}\n";
+		code += "\n";
+		code += "\n";
 	}
 
-	if (tex_parameters[PARAM_ANGULAR_VELOCITY].is_valid()) {
-		code += "	float tex_angular_velocity = textureLod(angular_velocity_texture, vec2(tv, 0.0), 0.0).r;\n";
-	} else {
-		code += "	float tex_angular_velocity = 1.0;\n";
+	code += "vec3 get_random_direction_from_spread(inout uint alt_seed, float spread_angle){\n";
+	code += "	float pi = 3.14159;\n";
+	code += "	float degree_to_rad = pi / 180.0;\n";
+	code += "	vec3 velocity = vec3(0.);\n";
+	code += "	float spread_rad = spread_angle * degree_to_rad;\n";
+	code += "	float angle1_rad = rand_from_seed_m1_p1(alt_seed) * spread_rad;\n";
+	code += "	float angle2_rad = rand_from_seed_m1_p1(alt_seed) * spread_rad * (1.0 - flatness);\n";
+	code += "	vec3 direction_xz = vec3(sin(angle1_rad), 0.0, cos(angle1_rad));\n";
+	code += "	vec3 direction_yz = vec3(0.0, sin(angle2_rad), cos(angle2_rad));\n";
+	code += "	direction_yz.z = direction_yz.z / max(0.0001,sqrt(abs(direction_yz.z))); // better uniform distribution\n";
+	code += "	vec3 spread_direction = vec3(direction_xz.x * direction_yz.z, direction_yz.y, direction_xz.z * direction_yz.z);\n";
+	code += "	vec3 direction_nrm = length(direction) > 0.0 ? normalize(direction) : vec3(0.0, 0.0, 1.0);\n";
+	code += "	// rotate spread to direction\n";
+	code += "	vec3 binormal = cross(vec3(0.0, 1.0, 0.0), direction_nrm);\n";
+	code += "	if (length(binormal) < 0.0001) {\n";
+	code += "		// direction is parallel to Y. Choose Z as the binormal.\n";
+	code += "		binormal = vec3(0.0, 0.0, 1.0);\n";
+	code += "	}\n";
+	code += "	binormal = normalize(binormal);\n";
+	code += "	vec3 normal = cross(binormal, direction_nrm);\n";
+	code += "	spread_direction = binormal * spread_direction.x + normal * spread_direction.y + direction_nrm * spread_direction.z;\n";
+	code += "	return spread_direction;\n";
+
+	code += "}\n";
+
+	code += "vec3 process_radial_displacement(DynamicsParameters param, float lifetime, inout uint alt_seed, mat4 transform, mat4 emission_transform, float delta){\n";
+	code += "	vec3 radial_displacement = vec3(0.0);\n";
+	code += "	float radial_displacement_multiplier = 1.0;\n";
+	if (tex_parameters[PARAM_RADIAL_VELOCITY].is_valid()) {
+		code += "   radial_displacement_multiplier = texture(radial_velocity_curve, vec2(lifetime)).r;\n";
+	}
+	code += "	vec3 global_pivot = (emission_transform * vec4(velocity_pivot, 1.0)).xyz;\n";
+	code += "	if(length(transform[3].xyz - global_pivot) > 0.01){\n";
+	code += "		radial_displacement = normalize(transform[3].xyz - global_pivot) * radial_displacement_multiplier * param.radial_velocity;\n";
+	code += "	}else{radial_displacement = get_random_direction_from_spread(alt_seed, 360.0)* param.radial_velocity;} \n";
+	code += "	if (radial_displacement_multiplier * param.radial_velocity < 0.0){\n // Prevent inwards velocity to flicker once the point is reached.";
+	code += "		if (length(radial_displacement) > 0.01){\n";
+	code += "		radial_displacement = normalize(radial_displacement) * min(abs((radial_displacement_multiplier * param.radial_velocity)), length(transform[3].xyz - global_pivot));\n";
+	code += "		}\n";
+	code += "	\n";
+	code += "	return radial_displacement * delta;\n";
+	code += "}\n";
+	if (tex_parameters[PARAM_DIRECTIONAL_VELOCITY].is_valid()) {
+		code += "vec3 process_directional_displacement(DynamicsParameters param, float lifetime_percent,mat4 transform, mat4 emission_transform, float delta){\n";
+		code += "	vec3 displacement = vec3(0.);\n";
+		if (directional_velocity_global) {
+			code += "		displacement = texture(directional_velocity_curve, vec2(lifetime_percent)).xyz * param.directional_velocity;\n";
+			code += "		displacement = (emission_transform * vec4(displacement, 0.0)).xyz;\n";
+		} else {
+			code += "		displacement = texture(directional_velocity_curve, vec2(lifetime_percent)).xyz * param.directional_velocity;\n";
+		}
+		code += "	return displacement * delta;\n";
+		code += "}\n";
 	}
 
+	code += "\n";
+	code += "void process_physical_parameters(inout PhysicalParameters params, float lifetime_percent){\n";
 	if (tex_parameters[PARAM_LINEAR_ACCEL].is_valid()) {
-		code += "	float tex_linear_accel = textureLod(linear_accel_texture, vec2(tv, 0.0), 0.0).r;\n";
-	} else {
-		code += "	float tex_linear_accel = 1.0;\n";
+		code += "	params.linear_accel *= texture(linear_accel_texture, vec2(lifetime_percent)).r;\n";
 	}
-
 	if (tex_parameters[PARAM_RADIAL_ACCEL].is_valid()) {
-		code += "	float tex_radial_accel = textureLod(radial_accel_texture, vec2(tv, 0.0), 0.0).r;\n";
-	} else {
-		code += "	float tex_radial_accel = 1.0;\n";
+		code += "	params.radial_accel *= texture(radial_accel_texture, vec2(lifetime_percent)).r;\n";
 	}
-
 	if (tex_parameters[PARAM_TANGENTIAL_ACCEL].is_valid()) {
-		code += "	float tex_tangent_accel = textureLod(tangent_accel_texture, vec2(tv, 0.0), 0.0).r;\n";
-	} else {
-		code += "	float tex_tangent_accel = 1.0;\n";
+		code += "	params.tangent_accel *= texture(tangent_accel_texture, vec2(lifetime_percent)).r;\n";
 	}
-
 	if (tex_parameters[PARAM_DAMPING].is_valid()) {
-		code += "	float tex_damping = textureLod(damping_texture, vec2(tv, 0.0), 0.0).r;\n";
-	} else {
-		code += "	float tex_damping = 1.0;\n";
+		code += "	params.damping *= texture(damping_texture, vec2(lifetime_percent)).r;\n";
 	}
+	code += "	\n";
+	code += "}\n";
+	code += "\n";
 
-	if (tex_parameters[PARAM_ANGLE].is_valid()) {
-		code += "	float tex_angle = textureLod(angle_texture, vec2(tv, 0.0), 0.0).r;\n";
-	} else {
-		code += "	float tex_angle = 1.0;\n";
+	code += "void start() {\n";
+	code += "	uint base_number = NUMBER;\n";
+	code += "	uint alt_seed = hash(base_number + uint(1) + RANDOM_SEED);\n";
+	code += "	if (rand_from_seed(alt_seed) > AMOUNT_RATIO) {\n";
+	code += "		ACTIVE = false;\n";
+	code += "	}\n";
+	code += "	DisplayParameters params;\n";
+	code += "	calculate_initial_display_params(params, alt_seed);\n";
+	code += "	// reset alt seed?\n";
+	code += "	// alt_seed = hash(base_number + uint(1) + RANDOM_SEED);\n";
+	code += "	DynamicsParameters dynamic_params;\n";
+	code += "	calculate_initial_dynamics_params(dynamic_params, alt_seed);\n";
+	code += "	PhysicalParameters physics_params;\n";
+	code += "	calculate_initial_physical_params(physics_params, alt_seed);\n";
+	code += "   process_display_param(params, 0.0);\n";
+	code += "	\n";
+	code += "	float pi = 3.14159;\n";
+	code += "	float degree_to_rad = pi / 180.0;\n";
+	code += "	\n";
+	code += "	if (RESTART_CUSTOM){\n";
+	code += "		CUSTOM = vec4(0.);\n";
+	code += "		CUSTOM.w = params.lifetime;\n";
+	code += "		CUSTOM.x = dynamic_params.angle;\n";
+	code += "	}\n";
+	code += "	if (RESTART_COLOR){\n";
+	code += "		COLOR = params.color;\n";
+	code += "	}\n";
+	code += "	if (RESTART_ROT_SCALE) {\n";
+	code += "		TRANSFORM[0].xyz = vec3(1.0, 0.0, 0.0);\n";
+	code += "		TRANSFORM[1].xyz = vec3(0.0, 1.0, 0.0);\n";
+	code += "		TRANSFORM[2].xyz = vec3(0.0, 0.0, 1.0);\n";
+	code += "	}\n";
+	code += "\n";
+	code += "	if (RESTART_POSITION) {\n";
+	code += "		TRANSFORM[3].xyz = calculate_initial_position(alt_seed);\n";
+	if (turbulence_enabled) {
+		code += "	float initial_turbulence_displacement = mix(turbulence_initial_displacement_min, turbulence_initial_displacement_max, rand_from_seed(alt_seed));\n";
+		code += "			vec3 noise_direction = get_noise_direction(TRANSFORM[3].xyz);\n";
+		code += "			TRANSFORM[3].xyz += noise_direction * initial_turbulence_displacement;\n";
 	}
-
-	if (tex_parameters[PARAM_ANIM_SPEED].is_valid()) {
-		code += "	float tex_anim_speed = textureLod(anim_speed_texture, vec2(tv, 0.0), 0.0).r;\n";
-	} else {
-		code += "	float tex_anim_speed = 1.0;\n";
+	code += "		TRANSFORM = EMISSION_TRANSFORM * TRANSFORM;\n";
+	code += "		}\n";
+	code += "	if (RESTART_VELOCITY) {\n";
+	code += "		VELOCITY = get_random_direction_from_spread(alt_seed, spread) * dynamic_params.initial_velocity_multiplier;\n";
+	code += "		}\n";
+	code += "	process_display_param(params, 0.);\n";
+	code += "//	process_dynamic_parameters(dynamic_params, 0., alt_seed, TRANSFORM, EMISSION_TRANSFORM, DELTA);\n";
+	code += "	VELOCITY = (EMISSION_TRANSFORM * vec4(VELOCITY, 0.0)).xyz;\n";
+	code += "	VELOCITY += EMITTER_VELOCITY * inherit_emitter_velocity_ratio;\n";
+	if (particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
+		code += "		VELOCITY.z = 0.;\n";
+		code += "		TRANSFORM[3].z = 0.;\n";
 	}
+	code += "}\n";
+	code += "\n";
 
-	if (tex_parameters[PARAM_ANIM_OFFSET].is_valid()) {
-		code += "	float tex_anim_offset = textureLod(anim_offset_texture, vec2(tv, 0.0), 0.0).r;\n";
-	} else {
-		code += "	float tex_anim_offset = 1.0;\n";
+	code += "void process() {\n";
+	code += "	uint base_number = NUMBER;\n";
+	// TODO add optional determinism here
+	code += "//	if (repeatable){\n";
+	code += "//		base_number = INDEX;\n";
+	code += "//	}\n";
+	code += "	uint alt_seed = hash(base_number + uint(1) + RANDOM_SEED);\n";
+	code += "	DisplayParameters params;\n";
+	code += "	calculate_initial_display_params(params, alt_seed);\n";
+	code += "	DynamicsParameters dynamic_params;\n";
+	code += "	calculate_initial_dynamics_params(dynamic_params, alt_seed);\n";
+	code += "	PhysicalParameters physics_params;\n";
+	code += "	calculate_initial_physical_params(physics_params, alt_seed);\n";
+	code += "	float pi = 3.14159;\n";
+	code += "	float degree_to_rad = pi / 180.0;\n";
+	code += "\n";
+	code += "	CUSTOM.y += DELTA / LIFETIME;\n";
+	code += "	CUSTOM.y = mix(CUSTOM.y, 1.0, INTERPOLATE_TO_END);\n";
+	code += "	float lifetime_percent = CUSTOM.y/ params.lifetime;\n";
+	code += "	if (CUSTOM.y > CUSTOM.w) {\n";
+	code += "		ACTIVE = false;\n";
+	code += "	}\n";
+	code += "	\n";
+	code += "	\n";
+	code += "	\n";
+	code += "	// will use this later to calculate final displacement and orient the particle.\n";
+	code += "	vec3 starting_position = TRANSFORM[3].xyz;\n";
+	code += "	vec3 controlled_displacement = vec3(0.0);\n";
+	code += "	\n";
+	code += "//	VELOCITY += process_physics_parameters(dynamic_params, lifetime_percent, alt_seed, TRANSFORM, EMISSION_TRANSFORM, DELTA);\n";
+	code += "	\n";
+	if (tex_parameters[PARAM_ORBIT_VELOCITY].is_valid() || particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
+		code += "	controlled_displacement += process_orbit_displacement(dynamic_params, lifetime_percent, alt_seed, TRANSFORM, EMISSION_TRANSFORM, DELTA, params.lifetime * LIFETIME);\n";
 	}
-
-	code += "	vec3 force = gravity;\n";
-	code += "	vec3 pos = TRANSFORM[3].xyz;\n";
-	if (particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
-		code += "	pos.z = 0.0;\n";
-	}
-	code += "	// apply linear acceleration\n";
-	code += "	float linear_accel_rand = rand_from_seed(alt_seed);\n";
-	code += "	force += length(VELOCITY) > 0.0 ? normalize(VELOCITY) * tex_linear_accel * mix(linear_accel_min, linear_accel_max, linear_accel_rand) : vec3(0.0);\n";
-	code += "	// apply radial acceleration\n";
-	code += "	vec3 org = EMISSION_TRANSFORM[3].xyz;\n";
-	code += "	vec3 diff = pos - org;\n";
-	code += "	float radial_accel_rand = rand_from_seed(alt_seed);\n";
-	code += "	force += length(diff) > 0.0 ? normalize(diff) * tex_radial_accel * mix(radial_accel_min, radial_accel_max, radial_accel_rand) : vec3(0.0);\n";
-	code += "	// apply tangential acceleration;\n";
-	code += "	float tangent_accel_val = tex_tangent_accel * mix(tangent_accel_min, tangent_accel_max, rand_from_seed(alt_seed));\n";
+	code += "	// calculate all velocity\n";
+	code += "	\n";
+	code += "	controlled_displacement += process_radial_displacement(dynamic_params, lifetime_percent, alt_seed, TRANSFORM, EMISSION_TRANSFORM, DELTA);\n";
+	code += "	\n";
+	if (tex_parameters[PARAM_DIRECTIONAL_VELOCITY].is_valid()) {
+		code += "	controlled_displacement += process_directional_displacement(dynamic_params, lifetime_percent, TRANSFORM, EMISSION_TRANSFORM, DELTA);\n";
+	}
+	code += "	\n";
+	code += "	process_physical_parameters(physics_params, lifetime_percent);\n";
+	code += "	vec3 force;\n";
+	code += "	{\n";
+	code += "		// copied from previous version\n";
+	code += "		vec3 pos = TRANSFORM[3].xyz;\n";
+	code += "		force = gravity;\n";
+	code += "		// apply linear acceleration\n";
+	code += "		force += length(VELOCITY) > 0.0 ? normalize(VELOCITY) * physics_params.linear_accel : vec3(0.0);\n";
+	code += "		// apply radial acceleration\n";
+	code += "		vec3 org = EMISSION_TRANSFORM[3].xyz;\n";
+	code += "		vec3 diff = pos - org;\n";
+	code += "		force += length(diff) > 0.0 ? normalize(diff) * physics_params.radial_accel : vec3(0.0);\n";
+	code += "		// apply tangential acceleration;\n";
+	code += "		float tangent_accel_val = physics_params.tangent_accel;\n";
 	if (particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
-		code += "	force += length(diff.yx) > 0.0 ? vec3(normalize(diff.yx * vec2(-1.0, 1.0)), 0.0) * tangent_accel_val : vec3(0.0);\n";
-
+		code += "       force += length(diff.yx) > 0.0 ? vec3(normalize(diff.yx * vec2(-1.0, 1.0)), 0.0) * tangent_accel_val : vec3(0.0);\n";
 	} else {
-		code += "	vec3 crossDiff = cross(normalize(diff), normalize(gravity));\n";
-		code += "	force += length(crossDiff) > 0.0 ? normalize(crossDiff) * tangent_accel_val : vec3(0.0);\n";
+		code += "		vec3 crossDiff = cross(normalize(diff), normalize(gravity));\n";
+		code += "		force += length(crossDiff) > 0.0 ? normalize(crossDiff) * tangent_accel_val : vec3(0.0);\n";
 	}
 	if (attractor_interaction_enabled) {
-		code += "	force += ATTRACTOR_FORCE;\n\n";
+		code += "		force += ATTRACTOR_FORCE;\n";
 	}
-
-	code += "	// apply attractor forces\n";
-	code += "	VELOCITY += force * DELTA;\n";
-
-	if (tex_parameters[PARAM_INITIAL_LINEAR_VELOCITY].is_valid()) {
-		code += "	VELOCITY = normalize(VELOCITY) * tex_linear_velocity;\n";
+	code += "\n";
+	code += "		// apply attractor forces\n";
+	if (particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
+		code += "			force.z = 0.;\n";
 	}
-
-	// Apply noise/turbulence.
+	code += "		VELOCITY += force * DELTA;\n";
+	code += "	}\n";
+	code += "	{\n";
+	code += "		// copied from previous version\n";
+	code += "		if (physics_params.damping > 0.0) {\n";
+	if (!particle_flags[PARTICLE_FLAG_DAMPING_AS_FRICTION]) {
+		code += "				float v = length(VELOCITY);\n";
+		code += "				v -= physics_params.damping * DELTA;\n";
+		code += "				if (v < 0.0) {\n";
+		code += "					VELOCITY = vec3(0.0);\n";
+		code += "				} else {\n";
+		code += "					VELOCITY = normalize(VELOCITY) * v;\n";
+		code += "				}\n";
+	} else {
+		code += "				if (length(VELOCITY) > 0.01){\n";
+		code += "					VELOCITY -= normalize(VELOCITY) * length(VELOCITY) * (physics_params.damping) * DELTA;\n";
+		code += "				}\n";
+	}
+	code += "		}\n";
+	code += "		\n";
+	code += "	}\n";
+	code += "	\n";
+	if (collision_mode == COLLISION_RIGID) {
+		code += "	if (COLLIDED) {\n";
+		code += "		if (length(VELOCITY) > 3.0) {\n";
+		code += "			TRANSFORM[3].xyz += COLLISION_NORMAL * COLLISION_DEPTH;\n";
+		code += "			VELOCITY -= COLLISION_NORMAL * dot(COLLISION_NORMAL, VELOCITY) * (1.0 + collision_bounce);\n";
+		code += "			VELOCITY = mix(VELOCITY,vec3(0.0),clamp(collision_friction, 0.0, 1.0));\n";
+		code += "		} else {\n";
+		code += "			VELOCITY = vec3(0.0);\n";
+		// If turbulence is enabled, set the noise direction to up so the turbulence color is "neutral"
+		if (turbulence_enabled) {
+			code += "			noise_direction = vec3(1.0, 0.0, 0.0);\n";
+		}
+		code += "		}\n";
+		code += "	}\n";
+	} else if (collision_mode == COLLISION_HIDE_ON_CONTACT) {
+		code += "	if (COLLIDED) {\n";
+		code += "		ACTIVE = false;\n";
+		code += "	}\n";
+	}
+	code += "	vec3 final_velocity = controlled_displacement/DELTA + VELOCITY;\n";
+	code += "	\n";
+	code += "	// turbulence before limiting\n";
 	if (turbulence_enabled) {
-		code += "	// apply turbulence\n";
 		if (tex_parameters[PARAM_TURB_INFLUENCE_OVER_LIFE].is_valid()) {
-			code += "	float turbulence_influence = textureLod(turbulence_influence_over_life, vec2(tv, 0.0), 0.0).r;\n";
+			code += "		float turbulence_influence = textureLod(turbulence_influence_over_life, vec2(lifetime_percent, 0.0), 0.0).r;\n";
 		} else {
-			code += "	const float turbulence_influence = 1.0;\n";
-		}
-		code += "	\n";
-		code += "	vec3 noise_direction = get_noise_direction(TRANSFORM[3].xyz);\n";
-		// If collision happened, turbulence is no longer applied.
-		// We don't need this check when the collision mode is "hide on contact",
-		// as the particle will be hidden anyway.
-		String extra_tab = "";
-		if (collision_mode != COLLISION_RIGID) {
-			code += "	if (!COLLIDED) {\n";
-			extra_tab = "	";
-		}
-		code += extra_tab + "	\n";
-		code += extra_tab + "	float vel_mag = length(VELOCITY);\n";
-		code += extra_tab + "	float vel_infl = clamp(mix(turbulence_influence_min, turbulence_influence_max, rand_from_seed(alt_seed)) * turbulence_influence, 0.0, 1.0);\n";
-		code += extra_tab + "	VELOCITY = mix(VELOCITY, normalize(noise_direction) * vel_mag * (1.0 + (1.0 - vel_infl) * 0.2), vel_infl);\n";
-		if (collision_mode != COLLISION_RIGID) {
-			code += "	}";
+			code += "   float turbulence_influence = 1.0;\n";
 		}
+		code += "		\n";
+		code += "		vec3 noise_direction = get_noise_direction(TRANSFORM[3].xyz);\n";
+		code += "		if (!COLLIDED) {\n";
+		code += "			\n";
+		code += "			float vel_mag = length(final_velocity);\n";
+		code += "			float vel_infl = clamp(dynamic_params.turb_influence * turbulence_influence, 0.0,1.0);\n";
+		code += "			final_velocity = mix(final_velocity, normalize(noise_direction) * vel_mag * (1.0 + (1.0 - vel_infl) * 0.2), vel_infl);\n";
+		code += "		}\n";
 	}
 	code += "	\n";
-	code += "	// orbit velocity\n";
-	if (particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
-		code += "	float orbit_amount = tex_orbit_velocity * mix(orbit_velocity_min, orbit_velocity_max, rand_from_seed(alt_seed));\n";
-		code += "	if (orbit_amount != 0.0) {\n";
-		code += "	     float ang = orbit_amount * DELTA * pi * 2.0;\n";
-		code += "	     mat2 rot = mat2(vec2(cos(ang), -sin(ang)), vec2(sin(ang), cos(ang)));\n";
-		code += "	     TRANSFORM[3].xy -= diff.xy;\n";
-		code += "	     TRANSFORM[3].xy += rot * diff.xy;\n";
+	code += "	// limit velocity\n";
+	if (velocity_limit_curve.is_valid()) {
+		code += "	if (length(final_velocity) > 0.001){\n";
+		code += "		final_velocity = normalize(final_velocity) * min(abs(length(final_velocity)), abs(texture(velocity_limit_curve, vec2(lifetime_percent)).r));\n";
 		code += "	}\n";
 	}
-
-	code += "	float dmp = mix(damping_min, damping_max, rand_from_seed(alt_seed));\n";
-	code += "	if (dmp * tex_damping > 0.0) {\n";
-	code += "		float v = length(VELOCITY);\n";
-	code += "		float damp = tex_damping * dmp;\n";
-	code += "		v -= damp * DELTA;\n";
-	code += "		if (v < 0.0) {\n";
-	code += "			VELOCITY = vec3(0.0);\n";
-	code += "		} else {\n";
-	code += "			VELOCITY = normalize(VELOCITY) * v;\n";
-	code += "		}\n";
-	code += "	}\n";
-	code += "	float base_angle = (tex_angle) * mix(initial_angle_min, initial_angle_max, angle_rand);\n";
-	code += "	base_angle += CUSTOM.y * LIFETIME * (tex_angular_velocity) * mix(angular_velocity_min,angular_velocity_max, rand_from_seed(alt_seed));\n";
-	code += "	CUSTOM.x = base_angle * degree_to_rad;\n"; // angle
-	code += "	CUSTOM.z = (tex_anim_offset) * mix(anim_offset_min, anim_offset_max, anim_offset_rand) + tv * tex_anim_speed * mix(anim_speed_min, anim_speed_max, rand_from_seed(alt_seed));\n"; // angle
-
-	// apply color
-	// apply hue rotation
-	if (tex_parameters[PARAM_SCALE].is_valid()) {
-		code += "	vec3 tex_scale = textureLod(scale_texture, vec2(tv, 0.0), 0.0).rgb;\n";
-	} else {
-		code += "	vec3 tex_scale = vec3(1.0);\n";
+	code += "	\n";
+	if (particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
+		code += "		final_velocity.z = 0.;\n";
 	}
-
-	if (tex_parameters[PARAM_HUE_VARIATION].is_valid()) {
-		code += "	float tex_hue_variation = textureLod(hue_variation_texture, vec2(tv, 0.0), 0.0).r;\n";
-	} else {
-		code += "	float tex_hue_variation = 1.0;\n";
+	code += "	TRANSFORM[3].xyz += final_velocity * DELTA;\n";
+	code += "	\n";
+	code += "	\n";
+	code += "	process_display_param(params, lifetime_percent);\n";
+	code += "	\n";
+	code += "	float base_angle = dynamic_params.angle;\n";
+	if (tex_parameters[PARAM_ANGLE].is_valid()) {
+		code += "	base_angle *= texture(angle_texture, vec2(lifetime_percent)).r;\n";
 	}
+	if (tex_parameters[PARAM_ANGULAR_VELOCITY].is_valid()) {
+		code += "	base_angle += CUSTOM.y * LIFETIME * dynamic_params.angular_velocity * texture(angular_velocity_texture, vec2(lifetime_percent)).r;\n";
 
-	code += "	float hue_rot_angle = (tex_hue_variation) * pi * 2.0 * mix(hue_variation_min, hue_variation_max, rand_from_seed(alt_seed));\n";
-	code += "	float hue_rot_c = cos(hue_rot_angle);\n";
-	code += "	float hue_rot_s = sin(hue_rot_angle);\n";
-	code += "	mat4 hue_rot_mat = mat4(vec4(0.299, 0.587, 0.114, 0.0),\n";
-	code += "			vec4(0.299, 0.587, 0.114, 0.0),\n";
-	code += "			vec4(0.299, 0.587, 0.114, 0.0),\n";
-	code += "			vec4(0.000, 0.000, 0.000, 1.0)) +\n";
-	code += "		mat4(vec4(0.701, -0.587, -0.114, 0.0),\n";
-	code += "			vec4(-0.299, 0.413, -0.114, 0.0),\n";
-	code += "			vec4(-0.300, -0.588, 0.886, 0.0),\n";
-	code += "			vec4(0.000, 0.000, 0.000, 0.0)) * hue_rot_c +\n";
-	code += "		mat4(vec4(0.168, 0.330, -0.497, 0.0),\n";
-	code += "			vec4(-0.328, 0.035,  0.292, 0.0),\n";
-	code += "			vec4(1.250, -1.050, -0.203, 0.0),\n";
-	code += "			vec4(0.000, 0.000, 0.000, 0.0)) * hue_rot_s;\n";
-	if (color_ramp.is_valid()) {
-		code += "	COLOR = hue_rot_mat * textureLod(color_ramp, vec2(tv, 0.0), 0.0) * color_value;\n";
 	} else {
-		code += "	COLOR = hue_rot_mat * color_value;\n";
-	}
-
-	if (color_initial_ramp.is_valid()) {
-		code += "	vec4 start_color = textureLod(color_initial_ramp, vec2(color_initial_rand, 0.0), 0.0);\n";
-		code += "	COLOR *= start_color;\n";
-	}
-
-	if (emission_color_texture.is_valid() && (emission_shape == EMISSION_SHAPE_POINTS || emission_shape == EMISSION_SHAPE_DIRECTED_POINTS)) {
-		code += "	COLOR *= texelFetch(emission_texture_color, emission_tex_ofs, 0);\n";
+		code += "	base_angle += CUSTOM.y * LIFETIME * dynamic_params.angular_velocity;\n";
 	}
-	code += "\n";
+	code += "	CUSTOM.x = base_angle * degree_to_rad;\n";
+	code += "   COLOR = params.color;\n";
 
 	if (particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
 		if (particle_flags[PARTICLE_FLAG_ALIGN_Y_TO_VELOCITY]) {
-			code += "	if (length(VELOCITY) > 0.0) {\n";
-			code += "		TRANSFORM[1].xyz = normalize(VELOCITY);\n";
+			code += "	if (length(final_velocity) > 0.0) {\n";
+			code += "		TRANSFORM[1].xyz = normalize(final_velocity);\n";
 			code += "	} else {\n";
 			code += "		TRANSFORM[1].xyz = normalize(TRANSFORM[1].xyz);\n";
 			code += "	}\n";
@@ -827,8 +1038,8 @@ void ParticleProcessMaterial::_update_shader() {
 	} else {
 		// orient particle Y towards velocity
 		if (particle_flags[PARTICLE_FLAG_ALIGN_Y_TO_VELOCITY]) {
-			code += "	if (length(VELOCITY) > 0.0) {\n";
-			code += "		TRANSFORM[1].xyz = normalize(VELOCITY);\n";
+			code += "	if (length(final_velocity) > 0.0) {\n";
+			code += "		TRANSFORM[1].xyz = normalize(final_velocity);\n";
 			code += "	} else {\n";
 			code += "		TRANSFORM[1].xyz = normalize(TRANSFORM[1].xyz);\n";
 			code += "	}\n";
@@ -855,33 +1066,20 @@ void ParticleProcessMaterial::_update_shader() {
 	if (particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
 		code += "	TRANSFORM[3].z = 0.0;\n";
 	}
-
-	// scale by scale
-	code += "	float base_scale = mix(scale_min, scale_max, scale_rand);\n";
-	code += "	base_scale = sign(base_scale) * max(abs(base_scale), 0.001);\n";
-	code += "	TRANSFORM[0].xyz *= base_scale * sign(tex_scale.r) * max(abs(tex_scale.r), 0.001);\n";
-	code += "	TRANSFORM[1].xyz *= base_scale * sign(tex_scale.g) * max(abs(tex_scale.g), 0.001);\n";
-	code += "	TRANSFORM[2].xyz *= base_scale * sign(tex_scale.b) * max(abs(tex_scale.b), 0.001);\n";
-
-	if (collision_mode == COLLISION_RIGID) {
-		code += "	if (COLLIDED) {\n";
-		code += "		if (length(VELOCITY) > 3.0) {\n";
-		code += "			TRANSFORM[3].xyz += COLLISION_NORMAL * COLLISION_DEPTH;\n";
-		code += "			VELOCITY -= COLLISION_NORMAL * dot(COLLISION_NORMAL, VELOCITY) * (1.0 + collision_bounce);\n";
-		code += "			VELOCITY = mix(VELOCITY,vec3(0.0),clamp(collision_friction, 0.0, 1.0));\n";
-		code += "		} else {\n";
-		code += "			VELOCITY = vec3(0.0);\n";
-		// If turbulence is enabled, set the noise direction to up so the turbulence color is "neutral"
-		if (turbulence_enabled) {
-			code += "			noise_direction = vec3(1.0, 0.0, 0.0);\n";
-		}
-		code += "		}\n";
-		code += "	}\n";
-	} else if (collision_mode == COLLISION_HIDE_ON_CONTACT) {
-		code += "	if (COLLIDED) {\n";
-		code += "		ACTIVE = false;\n";
-		code += "	}\n";
+	if (tex_parameters[PARAM_SCALE_OVER_VELOCITY].is_valid()) {
+		code += "	if(length(final_velocity) > 0.001){\n";
+		code += "		params.scale *= texture(scale_over_velocity_curve, vec2(clamp(length(final_velocity)/(scale_over_velocity_max - scale_over_velocity_min), 0.0,1.0), 0.0)).rgb;\n";
+		code += "	} else {params.scale *= texture(scale_over_velocity_curve, vec2(0.0)).rgb;}\n \n";
 	}
+	code += "//	params.scale *= length(final_velocity)/100.0;\n";
+	code += "\n";
+	code += "	TRANSFORM[0].xyz *= sign(params.scale.x) * max(abs(params.scale.x), 0.001);\n";
+	code += "	TRANSFORM[1].xyz *= sign(params.scale.y) * max(abs(params.scale.y), 0.001);\n";
+	code += "	TRANSFORM[2].xyz *= sign(params.scale.z) * max(abs(params.scale.z), 0.001);\n";
+	code += "	\n";
+	code += "	// \n";
+	code += "	CUSTOM.z = params.animation_offset + lifetime_percent * params.animation_speed;\n";
+	code += "	\n";
 
 	if (sub_emitter_mode != SUB_EMITTER_DISABLED && !RenderingServer::get_singleton()->is_low_end()) {
 		code += "	int emit_count = 0;\n";
@@ -975,6 +1173,15 @@ float ParticleProcessMaterial::get_flatness() const {
 	return flatness;
 }
 
+void ParticleProcessMaterial::set_velocity_pivot(const Vector3 &p_pivot) {
+	velocity_pivot = p_pivot;
+	RenderingServer::get_singleton()->material_set_param(_get_material(), shader_names->velocity_pivot, p_pivot);
+}
+
+Vector3 ParticleProcessMaterial::get_velocity_pivot() {
+	return velocity_pivot;
+}
+
 void ParticleProcessMaterial::set_param_min(Parameter p_param, float p_value) {
 	ERR_FAIL_INDEX(p_param, PARAM_MAX);
 
@@ -1029,6 +1236,15 @@ void ParticleProcessMaterial::set_param_min(Parameter p_param, float p_value) {
 		case PARAM_TURB_INFLUENCE_OVER_LIFE: {
 			// Can't happen, but silences warning
 		} break;
+		case PARAM_RADIAL_VELOCITY: {
+			RenderingServer::get_singleton()->material_set_param(_get_material(), shader_names->radial_velocity_min, p_value);
+		} break;
+		case PARAM_SCALE_OVER_VELOCITY: {
+			RenderingServer::get_singleton()->material_set_param(_get_material(), shader_names->scale_over_velocity_min, p_value);
+		} break;
+		case PARAM_DIRECTIONAL_VELOCITY: {
+			RenderingServer::get_singleton()->material_set_param(_get_material(), shader_names->directional_velocity_min, p_value);
+		} break;
 		case PARAM_MAX:
 			break; // Can't happen, but silences warning
 	}
@@ -1094,6 +1310,15 @@ void ParticleProcessMaterial::set_param_max(Parameter p_param, float p_value) {
 		case PARAM_TURB_INFLUENCE_OVER_LIFE: {
 			// Can't happen, but silences warning
 		} break;
+		case PARAM_RADIAL_VELOCITY: {
+			RenderingServer::get_singleton()->material_set_param(_get_material(), shader_names->radial_velocity_max, p_value);
+		} break;
+		case PARAM_SCALE_OVER_VELOCITY: {
+			RenderingServer::get_singleton()->material_set_param(_get_material(), shader_names->scale_over_velocity_max, p_value);
+		} break;
+		case PARAM_DIRECTIONAL_VELOCITY: {
+			RenderingServer::get_singleton()->material_set_param(_get_material(), shader_names->directional_velocity_max, p_value);
+		} break;
 		case PARAM_MAX:
 			break; // Can't happen, but silences warning
 	}
@@ -1107,11 +1332,15 @@ float ParticleProcessMaterial::get_param_max(Parameter p_param) const {
 
 static void _adjust_curve_range(const Ref &p_texture, float p_min, float p_max) {
 	Ref curve_tex = p_texture;
-	if (!curve_tex.is_valid()) {
+	if (curve_tex.is_valid()) {
+		curve_tex->ensure_default_setup(p_min, p_max);
+		return;
+	}
+	Ref curve_xyz_tex = p_texture;
+	if (curve_xyz_tex.is_valid()) {
+		curve_xyz_tex->ensure_default_setup(p_min, p_max);
 		return;
 	}
-
-	curve_tex->ensure_default_setup(p_min, p_max);
 }
 
 void ParticleProcessMaterial::set_param_texture(Parameter p_param, const Ref &p_texture) {
@@ -1132,6 +1361,7 @@ void ParticleProcessMaterial::set_param_texture(Parameter p_param, const Refmaterial_set_param(_get_material(), shader_names->orbit_velocity_texture, tex_rid);
 			_adjust_curve_range(p_texture, -500, 500);
+			notify_property_list_changed();
 		} break;
 		case PARAM_LINEAR_ACCEL: {
 			RenderingServer::get_singleton()->material_set_param(_get_material(), shader_names->linear_accel_texture, tex_rid);
@@ -1178,6 +1408,18 @@ void ParticleProcessMaterial::set_param_texture(Parameter p_param, const Refmaterial_set_param(_get_material(), shader_names->radial_velocity_texture, tex_rid);
+		} break;
+		case PARAM_SCALE_OVER_VELOCITY: {
+			RenderingServer::get_singleton()->material_set_param(_get_material(), shader_names->scale_over_velocity_texture, tex_rid);
+			_adjust_curve_range(p_texture, 0, 3);
+			notify_property_list_changed();
+		} break;
+		case PARAM_DIRECTIONAL_VELOCITY: {
+			RenderingServer::get_singleton()->material_set_param(_get_material(), shader_names->directional_velocity_texture, tex_rid);
+			notify_property_list_changed();
+		} break;
 		case PARAM_MAX:
 			break; // Can't happen, but silences warning
 	}
@@ -1233,6 +1475,42 @@ void ParticleProcessMaterial::set_particle_flag(ParticleFlags p_particle_flag, b
 	}
 }
 
+void ParticleProcessMaterial::set_alpha_curve(const Ref &p_texture) {
+	alpha_curve = p_texture;
+	RID tex_rid = p_texture.is_valid() ? p_texture->get_rid() : RID();
+	RenderingServer::get_singleton()->material_set_param(_get_material(), shader_names->alpha_ramp, tex_rid);
+	_queue_shader_change();
+	notify_property_list_changed();
+}
+
+Ref ParticleProcessMaterial::get_alpha_curve() const {
+	return alpha_curve;
+}
+
+void ParticleProcessMaterial::set_emission_curve(const Ref &p_texture) {
+	emission_curve = p_texture;
+	RID tex_rid = p_texture.is_valid() ? p_texture->get_rid() : RID();
+	RenderingServer::get_singleton()->material_set_param(_get_material(), shader_names->emission_ramp, tex_rid);
+	_queue_shader_change();
+	notify_property_list_changed();
+}
+
+Ref ParticleProcessMaterial::get_emission_curve() const {
+	return emission_curve;
+}
+
+void ParticleProcessMaterial::set_velocity_limit_curve(const Ref &p_texture) {
+	velocity_limit_curve = p_texture;
+	RID tex_rid = p_texture.is_valid() ? p_texture->get_rid() : RID();
+	RenderingServer::get_singleton()->material_set_param(_get_material(), shader_names->velocity_limit_curve, tex_rid);
+	_queue_shader_change();
+	notify_property_list_changed();
+}
+
+Ref ParticleProcessMaterial::get_velocity_limit_curve() const {
+	return velocity_limit_curve;
+}
+
 bool ParticleProcessMaterial::get_particle_flag(ParticleFlags p_particle_flag) const {
 	ERR_FAIL_INDEX_V(p_particle_flag, PARTICLE_FLAG_MAX, false);
 	return particle_flags[p_particle_flag];
@@ -1299,6 +1577,11 @@ void ParticleProcessMaterial::set_emission_ring_inner_radius(real_t p_radius) {
 	RenderingServer::get_singleton()->material_set_param(_get_material(), shader_names->emission_ring_inner_radius, p_radius);
 }
 
+void ParticleProcessMaterial::set_inherit_velocity_ratio(double p_ratio) {
+	inherit_emitter_velocity_ratio = p_ratio;
+	RenderingServer::get_singleton()->material_set_param(_get_material(), shader_names->inherit_emitter_velocity_ratio, p_ratio);
+}
+
 ParticleProcessMaterial::EmissionShape ParticleProcessMaterial::get_emission_shape() const {
 	return emission_shape;
 }
@@ -1343,6 +1626,28 @@ real_t ParticleProcessMaterial::get_emission_ring_inner_radius() const {
 	return emission_ring_inner_radius;
 }
 
+void ParticleProcessMaterial::set_emission_shape_offset(const Vector3 &p_emission_shape_offset) {
+	emission_shape_offset = p_emission_shape_offset;
+	RenderingServer::get_singleton()->material_set_param(_get_material(), shader_names->emission_shape_offset, p_emission_shape_offset);
+}
+
+Vector3 ParticleProcessMaterial::get_emission_shape_offset() const {
+	return emission_shape_offset;
+}
+
+void ParticleProcessMaterial::set_emission_shape_scale(const Vector3 &p_emission_shape_scale) {
+	emission_shape_scale = p_emission_shape_scale;
+	RenderingServer::get_singleton()->material_set_param(_get_material(), shader_names->emission_shape_scale, p_emission_shape_scale);
+}
+
+Vector3 ParticleProcessMaterial::get_emission_shape_scale() const {
+	return emission_shape_scale;
+}
+
+double ParticleProcessMaterial::get_inherit_velocity_ratio() {
+	return inherit_emitter_velocity_ratio;
+}
+
 void ParticleProcessMaterial::set_turbulence_enabled(const bool p_turbulence_enabled) {
 	turbulence_enabled = p_turbulence_enabled;
 	RenderingServer::get_singleton()->material_set_param(_get_material(), shader_names->turbulence_enabled, turbulence_enabled);
@@ -1459,10 +1764,6 @@ void ParticleProcessMaterial::_validate_property(PropertyInfo &p_property) const
 		p_property.usage = PROPERTY_USAGE_NONE;
 	}
 
-	if (p_property.name.begins_with("orbit_") && !particle_flags[PARTICLE_FLAG_DISABLE_Z]) {
-		p_property.usage = PROPERTY_USAGE_NONE;
-	}
-
 	if (!turbulence_enabled) {
 		if (p_property.name == "turbulence_noise_strength" ||
 				p_property.name == "turbulence_noise_scale" ||
@@ -1484,6 +1785,15 @@ void ParticleProcessMaterial::_validate_property(PropertyInfo &p_property) const
 	if (p_property.name == "collision_bounce" && collision_mode != COLLISION_RIGID) {
 		p_property.usage = PROPERTY_USAGE_NONE;
 	}
+	if ((p_property.name == "directional_velocity_min" || p_property.name == "directional_velocity_max") && !tex_parameters[PARAM_DIRECTIONAL_VELOCITY].is_valid()) {
+		p_property.usage = PROPERTY_USAGE_NONE;
+	}
+	if ((p_property.name == "scale_over_velocity_min" || p_property.name == "scale_over_velocity_max") && !tex_parameters[PARAM_SCALE_OVER_VELOCITY].is_valid()) {
+		p_property.usage = PROPERTY_USAGE_NO_EDITOR;
+	}
+	if ((p_property.name == "orbit_velocity_min" || p_property.name == "orbit_velocity_max") && (!tex_parameters[PARAM_ORBIT_VELOCITY].is_valid() && !particle_flags[PARTICLE_FLAG_DISABLE_Z])) {
+		p_property.usage = PROPERTY_USAGE_NO_EDITOR;
+	}
 }
 
 void ParticleProcessMaterial::set_sub_emitter_mode(SubEmitterMode p_sub_emitter_mode) {
@@ -1588,6 +1898,9 @@ void ParticleProcessMaterial::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_direction", "degrees"), &ParticleProcessMaterial::set_direction);
 	ClassDB::bind_method(D_METHOD("get_direction"), &ParticleProcessMaterial::get_direction);
 
+	ClassDB::bind_method(D_METHOD("set_inherit_velocity_ratio", "ratio"), &ParticleProcessMaterial::set_inherit_velocity_ratio);
+	ClassDB::bind_method(D_METHOD("get_inherit_velocity_ratio"), &ParticleProcessMaterial::get_inherit_velocity_ratio);
+
 	ClassDB::bind_method(D_METHOD("set_spread", "degrees"), &ParticleProcessMaterial::set_spread);
 	ClassDB::bind_method(D_METHOD("get_spread"), &ParticleProcessMaterial::get_spread);
 
@@ -1608,13 +1921,24 @@ void ParticleProcessMaterial::_bind_methods() {
 
 	ClassDB::bind_method(D_METHOD("set_color_ramp", "ramp"), &ParticleProcessMaterial::set_color_ramp);
 	ClassDB::bind_method(D_METHOD("get_color_ramp"), &ParticleProcessMaterial::get_color_ramp);
+	ClassDB::bind_method(D_METHOD("set_alpha_curve", "curve"), &ParticleProcessMaterial::set_alpha_curve);
+	ClassDB::bind_method(D_METHOD("get_alpha_curve"), &ParticleProcessMaterial::get_alpha_curve);
+
+	ClassDB::bind_method(D_METHOD("set_emission_curve", "curve"), &ParticleProcessMaterial::set_emission_curve);
+	ClassDB::bind_method(D_METHOD("get_emission_curve"), &ParticleProcessMaterial::get_emission_curve);
 
 	ClassDB::bind_method(D_METHOD("set_color_initial_ramp", "ramp"), &ParticleProcessMaterial::set_color_initial_ramp);
 	ClassDB::bind_method(D_METHOD("get_color_initial_ramp"), &ParticleProcessMaterial::get_color_initial_ramp);
 
+	ClassDB::bind_method(D_METHOD("set_velocity_limit_curve", "curve"), &ParticleProcessMaterial::set_velocity_limit_curve);
+	ClassDB::bind_method(D_METHOD("get_velocity_limit_curve"), &ParticleProcessMaterial::get_velocity_limit_curve);
+
 	ClassDB::bind_method(D_METHOD("set_particle_flag", "particle_flag", "enable"), &ParticleProcessMaterial::set_particle_flag);
 	ClassDB::bind_method(D_METHOD("get_particle_flag", "particle_flag"), &ParticleProcessMaterial::get_particle_flag);
 
+	ClassDB::bind_method(D_METHOD("set_velocity_pivot", "pivot"), &ParticleProcessMaterial::set_velocity_pivot);
+	ClassDB::bind_method(D_METHOD("get_velocity_pivot"), &ParticleProcessMaterial::get_velocity_pivot);
+
 	ClassDB::bind_method(D_METHOD("set_emission_shape", "shape"), &ParticleProcessMaterial::set_emission_shape);
 	ClassDB::bind_method(D_METHOD("get_emission_shape"), &ParticleProcessMaterial::get_emission_shape);
 
@@ -1648,6 +1972,12 @@ void ParticleProcessMaterial::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_emission_ring_inner_radius", "inner_radius"), &ParticleProcessMaterial::set_emission_ring_inner_radius);
 	ClassDB::bind_method(D_METHOD("get_emission_ring_inner_radius"), &ParticleProcessMaterial::get_emission_ring_inner_radius);
 
+	ClassDB::bind_method(D_METHOD("set_emission_shape_offset", "emission_shape_offset"), &ParticleProcessMaterial::set_emission_shape_offset);
+	ClassDB::bind_method(D_METHOD("get_emission_shape_offset"), &ParticleProcessMaterial::get_emission_shape_offset);
+
+	ClassDB::bind_method(D_METHOD("set_emission_shape_scale", "emission_shape_scale"), &ParticleProcessMaterial::set_emission_shape_scale);
+	ClassDB::bind_method(D_METHOD("get_emission_shape_scale"), &ParticleProcessMaterial::get_emission_shape_scale);
+
 	ClassDB::bind_method(D_METHOD("get_turbulence_enabled"), &ParticleProcessMaterial::get_turbulence_enabled);
 	ClassDB::bind_method(D_METHOD("set_turbulence_enabled", "turbulence_enabled"), &ParticleProcessMaterial::set_turbulence_enabled);
 
@@ -1699,10 +2029,16 @@ void ParticleProcessMaterial::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_collision_bounce", "bounce"), &ParticleProcessMaterial::set_collision_bounce);
 	ClassDB::bind_method(D_METHOD("get_collision_bounce"), &ParticleProcessMaterial::get_collision_bounce);
 
-	ADD_GROUP("Time", "");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "lifetime_randomness", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_lifetime_randomness", "get_lifetime_randomness");
-
-	ADD_GROUP("Emission Shape", "emission_");
+	ADD_GROUP("Particle Flags", "particle_flag_");
+	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "particle_flag_align_y"), "set_particle_flag", "get_particle_flag", PARTICLE_FLAG_ALIGN_Y_TO_VELOCITY);
+	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "particle_flag_rotate_y"), "set_particle_flag", "get_particle_flag", PARTICLE_FLAG_ROTATE_Y);
+	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "particle_flag_disable_z"), "set_particle_flag", "get_particle_flag", PARTICLE_FLAG_DISABLE_Z);
+	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "particle_flag_damping_as_friction"), "set_particle_flag", "get_particle_flag", PARTICLE_FLAG_DAMPING_AS_FRICTION);
+	ADD_GROUP("Spawn", "");
+	ADD_SUBGROUP("Position", "");
+	ADD_PROPERTY(PropertyInfo(Variant::VECTOR3, "emission_shape_offset"), "set_emission_shape_offset", "get_emission_shape_offset");
+	ADD_PROPERTY(PropertyInfo(Variant::VECTOR3, "emission_shape_scale"), "set_emission_shape_scale", "get_emission_shape_scale");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "emission_shape", PROPERTY_HINT_ENUM, "Point,Sphere,Sphere Surface,Box,Points,Directed Points,Ring"), "set_emission_shape", "get_emission_shape");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "emission_sphere_radius", PROPERTY_HINT_RANGE, "0.01,128,0.01,or_greater"), "set_emission_sphere_radius", "get_emission_sphere_radius");
 	ADD_PROPERTY(PropertyInfo(Variant::VECTOR3, "emission_box_extents"), "set_emission_box_extents", "get_emission_box_extents");
@@ -1714,60 +2050,87 @@ void ParticleProcessMaterial::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "emission_ring_height"), "set_emission_ring_height", "get_emission_ring_height");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "emission_ring_radius"), "set_emission_ring_radius", "get_emission_ring_radius");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "emission_ring_inner_radius"), "set_emission_ring_inner_radius", "get_emission_ring_inner_radius");
-	ADD_GROUP("Particle Flags", "particle_flag_");
-	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "particle_flag_align_y"), "set_particle_flag", "get_particle_flag", PARTICLE_FLAG_ALIGN_Y_TO_VELOCITY);
-	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "particle_flag_rotate_y"), "set_particle_flag", "get_particle_flag", PARTICLE_FLAG_ROTATE_Y);
-	ADD_PROPERTYI(PropertyInfo(Variant::BOOL, "particle_flag_disable_z"), "set_particle_flag", "get_particle_flag", PARTICLE_FLAG_DISABLE_Z);
-	ADD_GROUP("Direction", "");
+	ADD_SUBGROUP("Angle", "");
+	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "angle_min", PROPERTY_HINT_RANGE, "-720,720,0.1,or_less,or_greater,degrees"), "set_param_min", "get_param_min", PARAM_ANGLE);
+	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "angle_max", PROPERTY_HINT_RANGE, "-720,720,0.1,or_less,or_greater,degrees"), "set_param_max", "get_param_max", PARAM_ANGLE);
+	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "angle_curve", PROPERTY_HINT_RESOURCE_TYPE, "CurveTexture"), "set_param_texture", "get_param_texture", PARAM_ANGLE);
+	ADD_SUBGROUP("Velocity", "");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "inherit_velocity_ratio", PROPERTY_HINT_RANGE, "0.0,1.0,0.001,or_less,or_greater"), "set_inherit_velocity_ratio", "get_inherit_velocity_ratio");
+	ADD_PROPERTY(PropertyInfo(Variant::VECTOR3, "velocity_pivot"), "set_velocity_pivot", "get_velocity_pivot");
 	ADD_PROPERTY(PropertyInfo(Variant::VECTOR3, "direction"), "set_direction", "get_direction");
-	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "spread", PROPERTY_HINT_RANGE, "0,180,0.01"), "set_spread", "get_spread");
-	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "flatness", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_flatness", "get_flatness");
-	ADD_GROUP("Gravity", "");
-	ADD_PROPERTY(PropertyInfo(Variant::VECTOR3, "gravity"), "set_gravity", "get_gravity");
-	ADD_GROUP("Initial Velocity", "initial_");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "spread", PROPERTY_HINT_RANGE, "0,180,0.001"), "set_spread", "get_spread");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "flatness", PROPERTY_HINT_RANGE, "0,1,0.001"), "set_flatness", "get_flatness");
 	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "initial_velocity_min", PROPERTY_HINT_RANGE, "0,1000,0.01,or_less,or_greater"), "set_param_min", "get_param_min", PARAM_INITIAL_LINEAR_VELOCITY);
 	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "initial_velocity_max", PROPERTY_HINT_RANGE, "0,1000,0.01,or_less,or_greater"), "set_param_max", "get_param_max", PARAM_INITIAL_LINEAR_VELOCITY);
-	ADD_GROUP("Angular Velocity", "angular_");
+	ADD_GROUP("Animated Velocity", "");
+	ADD_SUBGROUP("Velocity Limit", "");
+	ADD_SUBGROUP("Angular Velocity", "angular_");
 	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "angular_velocity_min", PROPERTY_HINT_RANGE, "-720,720,0.01,or_less,or_greater"), "set_param_min", "get_param_min", PARAM_ANGULAR_VELOCITY);
 	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "angular_velocity_max", PROPERTY_HINT_RANGE, "-720,720,0.01,or_less,or_greater"), "set_param_max", "get_param_max", PARAM_ANGULAR_VELOCITY);
 	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "angular_velocity_curve", PROPERTY_HINT_RESOURCE_TYPE, "CurveTexture"), "set_param_texture", "get_param_texture", PARAM_ANGULAR_VELOCITY);
-	ADD_GROUP("Orbit Velocity", "orbit_");
+	ADD_SUBGROUP("Directional Velocity", "directional_");
+	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "directional_velocity_min", PROPERTY_HINT_RANGE, "-720,720,0.01,or_less,or_greater"), "set_param_min", "get_param_min", PARAM_DIRECTIONAL_VELOCITY);
+	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "directional_velocity_max", PROPERTY_HINT_RANGE, "-720,720,0.01,or_less,or_greater"), "set_param_max", "get_param_max", PARAM_DIRECTIONAL_VELOCITY);
+	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "directional_velocity_curve", PROPERTY_HINT_RESOURCE_TYPE, "CurveXYZTexture"), "set_param_texture", "get_param_texture", PARAM_DIRECTIONAL_VELOCITY);
+	ADD_SUBGROUP("Orbit Velocity", "orbit_");
 	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "orbit_velocity_min", PROPERTY_HINT_RANGE, "-1000,1000,0.01,or_less,or_greater"), "set_param_min", "get_param_min", PARAM_ORBIT_VELOCITY);
 	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "orbit_velocity_max", PROPERTY_HINT_RANGE, "-1000,1000,0.01,or_less,or_greater"), "set_param_max", "get_param_max", PARAM_ORBIT_VELOCITY);
-	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "orbit_velocity_curve", PROPERTY_HINT_RESOURCE_TYPE, "CurveTexture"), "set_param_texture", "get_param_texture", PARAM_ORBIT_VELOCITY);
-	ADD_GROUP("Linear Accel", "linear_");
+	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "orbit_velocity_curve", PROPERTY_HINT_RESOURCE_TYPE, "CurveTexture,CurveXYZTexture"), "set_param_texture", "get_param_texture", PARAM_ORBIT_VELOCITY);
+	ADD_SUBGROUP("Radial Velocity", "radial_");
+	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "radial_velocity_min", PROPERTY_HINT_RANGE, "-1000,1000,0.01,or_less,or_greater"), "set_param_min", "get_param_min", PARAM_RADIAL_VELOCITY);
+	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "radial_velocity_max", PROPERTY_HINT_RANGE, "-1000,1000,0.01,or_less,or_greater"), "set_param_max", "get_param_max", PARAM_RADIAL_VELOCITY);
+	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "radial_velocity_curve", PROPERTY_HINT_RESOURCE_TYPE, "CurveTexture"), "set_param_texture", "get_param_texture", PARAM_RADIAL_VELOCITY);
+	ADD_SUBGROUP("Velocity Limit", "");
+	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "velocity_limit_curve", PROPERTY_HINT_RESOURCE_TYPE, "CurveTexture"), "set_velocity_limit_curve", "get_velocity_limit_curve");
+	ADD_GROUP("Accelerations", "");
+	ADD_SUBGROUP("Gravity", "");
+	ADD_PROPERTY(PropertyInfo(Variant::VECTOR3, "gravity"), "set_gravity", "get_gravity");
+	ADD_SUBGROUP("Linear Accel", "linear_");
 	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "linear_accel_min", PROPERTY_HINT_RANGE, "-100,100,0.01,or_less,or_greater"), "set_param_min", "get_param_min", PARAM_LINEAR_ACCEL);
 	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "linear_accel_max", PROPERTY_HINT_RANGE, "-100,100,0.01,or_less,or_greater"), "set_param_max", "get_param_max", PARAM_LINEAR_ACCEL);
 	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "linear_accel_curve", PROPERTY_HINT_RESOURCE_TYPE, "CurveTexture"), "set_param_texture", "get_param_texture", PARAM_LINEAR_ACCEL);
-	ADD_GROUP("Radial Accel", "radial_");
+	ADD_SUBGROUP("Radial Accel", "radial_");
 	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "radial_accel_min", PROPERTY_HINT_RANGE, "-100,100,0.01,or_less,or_greater"), "set_param_min", "get_param_min", PARAM_RADIAL_ACCEL);
 	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "radial_accel_max", PROPERTY_HINT_RANGE, "-100,100,0.01,or_less,or_greater"), "set_param_max", "get_param_max", PARAM_RADIAL_ACCEL);
 	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "radial_accel_curve", PROPERTY_HINT_RESOURCE_TYPE, "CurveTexture"), "set_param_texture", "get_param_texture", PARAM_RADIAL_ACCEL);
-	ADD_GROUP("Tangential Accel", "tangential_");
+	ADD_SUBGROUP("Tangential Accel", "tangential_");
 	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "tangential_accel_min", PROPERTY_HINT_RANGE, "-100,100,0.01,or_less,or_greater"), "set_param_min", "get_param_min", PARAM_TANGENTIAL_ACCEL);
 	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "tangential_accel_max", PROPERTY_HINT_RANGE, "-100,100,0.01,or_less,or_greater"), "set_param_max", "get_param_max", PARAM_TANGENTIAL_ACCEL);
 	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "tangential_accel_curve", PROPERTY_HINT_RESOURCE_TYPE, "CurveTexture"), "set_param_texture", "get_param_texture", PARAM_TANGENTIAL_ACCEL);
-	ADD_GROUP("Damping", "");
+	ADD_SUBGROUP("Damping", "");
 	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "damping_min", PROPERTY_HINT_RANGE, "0,100,0.001,or_greater"), "set_param_min", "get_param_min", PARAM_DAMPING);
 	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "damping_max", PROPERTY_HINT_RANGE, "0,100,0.001,or_greater"), "set_param_max", "get_param_max", PARAM_DAMPING);
 	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "damping_curve", PROPERTY_HINT_RESOURCE_TYPE, "CurveTexture"), "set_param_texture", "get_param_texture", PARAM_DAMPING);
-	ADD_GROUP("Angle", "");
-	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "angle_min", PROPERTY_HINT_RANGE, "-720,720,0.1,or_less,or_greater,degrees"), "set_param_min", "get_param_min", PARAM_ANGLE);
-	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "angle_max", PROPERTY_HINT_RANGE, "-720,720,0.1,or_less,or_greater,degrees"), "set_param_max", "get_param_max", PARAM_ANGLE);
-	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "angle_curve", PROPERTY_HINT_RESOURCE_TYPE, "CurveTexture"), "set_param_texture", "get_param_texture", PARAM_ANGLE);
-	ADD_GROUP("Scale", "");
+	ADD_SUBGROUP("Attractor Interaction", "attractor_interaction_");
+	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "attractor_interaction_enabled"), "set_attractor_interaction_enabled", "is_attractor_interaction_enabled");
+
+	ADD_GROUP("Display", "");
+	ADD_SUBGROUP("Scale", "");
 	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "scale_min", PROPERTY_HINT_RANGE, "0,1000,0.01,or_greater"), "set_param_min", "get_param_min", PARAM_SCALE);
 	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "scale_max", PROPERTY_HINT_RANGE, "0,1000,0.01,or_greater"), "set_param_max", "get_param_max", PARAM_SCALE);
 	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "scale_curve", PROPERTY_HINT_RESOURCE_TYPE, "CurveTexture,CurveXYZTexture"), "set_param_texture", "get_param_texture", PARAM_SCALE);
-	ADD_GROUP("Color", "");
+	ADD_SUBGROUP("Scale Over Velocity", "");
+	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "scale_over_velocity_min", PROPERTY_HINT_RANGE, "0,1000,0.01,or_greater"), "set_param_min", "get_param_min", PARAM_SCALE_OVER_VELOCITY);
+	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "scale_over_velocity_max", PROPERTY_HINT_RANGE, "0,1000,0.01,or_greater"), "set_param_max", "get_param_max", PARAM_SCALE_OVER_VELOCITY);
+	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "scale_over_velocity_curve", PROPERTY_HINT_RESOURCE_TYPE, "CurveTexture,CurveXYZTexture"), "set_param_texture", "get_param_texture", PARAM_SCALE_OVER_VELOCITY);
+
+	ADD_SUBGROUP("Color Curves", "");
 	ADD_PROPERTY(PropertyInfo(Variant::COLOR, "color"), "set_color", "get_color");
 	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "color_ramp", PROPERTY_HINT_RESOURCE_TYPE, "GradientTexture1D"), "set_color_ramp", "get_color_ramp");
 	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "color_initial_ramp", PROPERTY_HINT_RESOURCE_TYPE, "GradientTexture1D"), "set_color_initial_ramp", "get_color_initial_ramp");
-
-	ADD_GROUP("Hue Variation", "hue_");
+	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "alpha_curve", PROPERTY_HINT_RESOURCE_TYPE, "CurveTexture"), "set_alpha_curve", "get_alpha_curve");
+	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "emission_curve", PROPERTY_HINT_RESOURCE_TYPE, "CurveTexture"), "set_emission_curve", "get_emission_curve");
+	ADD_SUBGROUP("Hue Variation", "hue_");
 	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "hue_variation_min", PROPERTY_HINT_RANGE, "-1,1,0.01"), "set_param_min", "get_param_min", PARAM_HUE_VARIATION);
 	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "hue_variation_max", PROPERTY_HINT_RANGE, "-1,1,0.01"), "set_param_max", "get_param_max", PARAM_HUE_VARIATION);
 	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "hue_variation_curve", PROPERTY_HINT_RESOURCE_TYPE, "CurveTexture"), "set_param_texture", "get_param_texture", PARAM_HUE_VARIATION);
+	ADD_SUBGROUP("Animation", "anim_");
+	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "anim_speed_min", PROPERTY_HINT_RANGE, "0,16,0.01,or_less,or_greater"), "set_param_min", "get_param_min", PARAM_ANIM_SPEED);
+	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "anim_speed_max", PROPERTY_HINT_RANGE, "0,16,0.01,or_less,or_greater"), "set_param_max", "get_param_max", PARAM_ANIM_SPEED);
+	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "anim_speed_curve", PROPERTY_HINT_RESOURCE_TYPE, "CurveTexture"), "set_param_texture", "get_param_texture", PARAM_ANIM_SPEED);
+	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "anim_offset_min", PROPERTY_HINT_RANGE, "0,1,0.0001"), "set_param_min", "get_param_min", PARAM_ANIM_OFFSET);
+	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "anim_offset_max", PROPERTY_HINT_RANGE, "0,1,0.0001"), "set_param_max", "get_param_max", PARAM_ANIM_OFFSET);
+	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "anim_offset_curve", PROPERTY_HINT_RESOURCE_TYPE, "CurveTexture"), "set_param_texture", "get_param_texture", PARAM_ANIM_OFFSET);
 
 	ADD_GROUP("Turbulence", "turbulence_");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "turbulence_enabled"), "set_turbulence_enabled", "get_turbulence_enabled");
@@ -1781,14 +2144,11 @@ void ParticleProcessMaterial::_bind_methods() {
 	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "turbulence_initial_displacement_max", PROPERTY_HINT_RANGE, "-100,100,0.1"), "set_param_max", "get_param_max", PARAM_TURB_INIT_DISPLACEMENT);
 	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "turbulence_influence_over_life", PROPERTY_HINT_RESOURCE_TYPE, "CurveTexture"), "set_param_texture", "get_param_texture", PARAM_TURB_INFLUENCE_OVER_LIFE);
 
-	ADD_GROUP("Animation", "anim_");
-	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "anim_speed_min", PROPERTY_HINT_RANGE, "0,16,0.01,or_less,or_greater"), "set_param_min", "get_param_min", PARAM_ANIM_SPEED);
-	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "anim_speed_max", PROPERTY_HINT_RANGE, "0,16,0.01,or_less,or_greater"), "set_param_max", "get_param_max", PARAM_ANIM_SPEED);
-	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "anim_speed_curve", PROPERTY_HINT_RESOURCE_TYPE, "CurveTexture"), "set_param_texture", "get_param_texture", PARAM_ANIM_SPEED);
-	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "anim_offset_min", PROPERTY_HINT_RANGE, "0,1,0.0001"), "set_param_min", "get_param_min", PARAM_ANIM_OFFSET);
-	ADD_PROPERTYI(PropertyInfo(Variant::FLOAT, "anim_offset_max", PROPERTY_HINT_RANGE, "0,1,0.0001"), "set_param_max", "get_param_max", PARAM_ANIM_OFFSET);
-	ADD_PROPERTYI(PropertyInfo(Variant::OBJECT, "anim_offset_curve", PROPERTY_HINT_RESOURCE_TYPE, "CurveTexture"), "set_param_texture", "get_param_texture", PARAM_ANIM_OFFSET);
-
+	ADD_GROUP("Collision", "collision_");
+	ADD_PROPERTY(PropertyInfo(Variant::INT, "collision_mode", PROPERTY_HINT_ENUM, "Disabled,Rigid,Hide On Contact"), "set_collision_mode", "get_collision_mode");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "collision_friction", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_collision_friction", "get_collision_friction");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "collision_bounce", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_collision_bounce", "get_collision_bounce");
+	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "collision_use_scale"), "set_collision_use_scale", "is_collision_using_scale");
 	ADD_GROUP("Sub Emitter", "sub_emitter_");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "sub_emitter_mode", PROPERTY_HINT_ENUM, "Disabled,Constant,At End,At Collision"), "set_sub_emitter_mode", "get_sub_emitter_mode");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "sub_emitter_frequency", PROPERTY_HINT_RANGE, "0.01,100,0.01,suffix:Hz"), "set_sub_emitter_frequency", "get_sub_emitter_frequency");
@@ -1796,14 +2156,6 @@ void ParticleProcessMaterial::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "sub_emitter_amount_at_collision", PROPERTY_HINT_RANGE, "1,32,1"), "set_sub_emitter_amount_at_collision", "get_sub_emitter_amount_at_collision");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "sub_emitter_keep_velocity"), "set_sub_emitter_keep_velocity", "get_sub_emitter_keep_velocity");
 
-	ADD_GROUP("Attractor Interaction", "attractor_interaction_");
-	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "attractor_interaction_enabled"), "set_attractor_interaction_enabled", "is_attractor_interaction_enabled");
-	ADD_GROUP("Collision", "collision_");
-	ADD_PROPERTY(PropertyInfo(Variant::INT, "collision_mode", PROPERTY_HINT_ENUM, "Disabled,Rigid,Hide On Contact"), "set_collision_mode", "get_collision_mode");
-	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "collision_friction", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_collision_friction", "get_collision_friction");
-	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "collision_bounce", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_collision_bounce", "get_collision_bounce");
-	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "collision_use_scale"), "set_collision_use_scale", "is_collision_using_scale");
-
 	BIND_ENUM_CONSTANT(PARAM_INITIAL_LINEAR_VELOCITY);
 	BIND_ENUM_CONSTANT(PARAM_ANGULAR_VELOCITY);
 	BIND_ENUM_CONSTANT(PARAM_ORBIT_VELOCITY);
@@ -1816,11 +2168,15 @@ void ParticleProcessMaterial::_bind_methods() {
 	BIND_ENUM_CONSTANT(PARAM_HUE_VARIATION);
 	BIND_ENUM_CONSTANT(PARAM_ANIM_SPEED);
 	BIND_ENUM_CONSTANT(PARAM_ANIM_OFFSET);
+	BIND_ENUM_CONSTANT(PARAM_RADIAL_VELOCITY);
+	BIND_ENUM_CONSTANT(PARAM_DIRECTIONAL_VELOCITY);
+	BIND_ENUM_CONSTANT(PARAM_SCALE_OVER_VELOCITY);
 	BIND_ENUM_CONSTANT(PARAM_MAX);
 
 	BIND_ENUM_CONSTANT(PARTICLE_FLAG_ALIGN_Y_TO_VELOCITY);
 	BIND_ENUM_CONSTANT(PARTICLE_FLAG_ROTATE_Y);
 	BIND_ENUM_CONSTANT(PARTICLE_FLAG_DISABLE_Z);
+	BIND_ENUM_CONSTANT(PARTICLE_FLAG_DAMPING_AS_FRICTION);
 	BIND_ENUM_CONSTANT(PARTICLE_FLAG_MAX);
 
 	BIND_ENUM_CONSTANT(EMISSION_SHAPE_POINT);
@@ -1877,6 +2233,8 @@ ParticleProcessMaterial::ParticleProcessMaterial() :
 	set_param_max(PARAM_HUE_VARIATION, 0);
 	set_param_max(PARAM_ANIM_SPEED, 0);
 	set_param_max(PARAM_ANIM_OFFSET, 0);
+	set_param_min(PARAM_DIRECTIONAL_VELOCITY, 1.0);
+	set_param_max(PARAM_DIRECTIONAL_VELOCITY, 1.0);
 	set_emission_shape(EMISSION_SHAPE_POINT);
 	set_emission_sphere_radius(1);
 	set_emission_box_extents(Vector3(1, 1, 1));
@@ -1884,6 +2242,8 @@ ParticleProcessMaterial::ParticleProcessMaterial() :
 	set_emission_ring_height(1);
 	set_emission_ring_radius(1);
 	set_emission_ring_inner_radius(0);
+	set_emission_shape_offset(Vector3(0.0, 0.0, 0.0));
+	set_emission_shape_scale(Vector3(1.0, 1.0, 1.0));
 
 	set_turbulence_enabled(false);
 	set_turbulence_noise_speed(Vector3(0.0, 0.0, 0.0));
diff --git a/scene/resources/particle_process_material.h b/scene/resources/particle_process_material.h
index 533bd9636fae..83228104b212 100644
--- a/scene/resources/particle_process_material.h
+++ b/scene/resources/particle_process_material.h
@@ -32,6 +32,7 @@
 #define PARTICLE_PROCESS_MATERIAL_H
 
 #include "core/templates/rid.h"
+#include "core/templates/self_list.h"
 #include "scene/resources/material.h"
 
 /*
@@ -61,6 +62,9 @@ class ParticleProcessMaterial : public Material {
 		PARAM_TURB_INFLUENCE_OVER_LIFE,
 		PARAM_TURB_VEL_INFLUENCE,
 		PARAM_TURB_INIT_DISPLACEMENT,
+		PARAM_RADIAL_VELOCITY,
+		PARAM_DIRECTIONAL_VELOCITY,
+		PARAM_SCALE_OVER_VELOCITY,
 		PARAM_MAX
 	};
 
@@ -69,6 +73,7 @@ class ParticleProcessMaterial : public Material {
 		PARTICLE_FLAG_ALIGN_Y_TO_VELOCITY,
 		PARTICLE_FLAG_ROTATE_Y,
 		PARTICLE_FLAG_DISABLE_Z,
+		PARTICLE_FLAG_DAMPING_AS_FRICTION,
 		PARTICLE_FLAG_MAX
 	};
 
@@ -102,35 +107,37 @@ class ParticleProcessMaterial : public Material {
 	};
 
 private:
-	union MaterialKey {
-		// The bit size of the struct must be kept below or equal to 32 bits.
+	struct MaterialKey {
+		// The bit size of the struct must be kept below or equal to 64 bits.
 		// Consider this when extending ParticleFlags, EmissionShape, or SubEmitterMode.
-		struct {
-			uint32_t texture_mask : 16;
-			uint32_t texture_color : 1;
-			uint32_t particle_flags : 4;
-			uint32_t emission_shape : 3;
-			uint32_t invalid_key : 1;
-			uint32_t has_emission_color : 1;
-			uint32_t sub_emitter : 2;
-			uint32_t attractor_enabled : 1;
-			uint32_t collision_mode : 2;
-			uint32_t collision_scale : 1;
-			uint32_t turbulence_enabled : 1;
-		};
-
-		uint64_t key = 0;
+		uint64_t texture_mask : PARAM_MAX;
+		uint64_t texture_color : 1;
+		uint64_t particle_flags : PARTICLE_FLAG_MAX - 1;
+		uint64_t emission_shape : 3;
+		uint64_t invalid_key : 1;
+		uint64_t has_emission_color : 1;
+		uint64_t sub_emitter : 2;
+		uint64_t attractor_enabled : 1;
+		uint64_t collision_mode : 2;
+		uint64_t collision_scale : 1;
+		uint64_t turbulence_enabled : 1;
+		uint64_t limiter_curve : 1;
+		uint64_t alpha_curve : 1;
+		uint64_t emission_curve : 1;
+		uint64_t has_initial_ramp : 1;
+
+		MaterialKey() {
+			memset(this, 0, sizeof(MaterialKey));
+		}
 
 		static uint32_t hash(const MaterialKey &p_key) {
-			return hash_murmur3_one_32(p_key.key);
+			return hash_djb2_buffer((const uint8_t *)&p_key, sizeof(MaterialKey));
 		}
-
 		bool operator==(const MaterialKey &p_key) const {
-			return key == p_key.key;
+			return memcmp(this, &p_key, sizeof(MaterialKey)) == 0;
 		}
-
 		bool operator<(const MaterialKey &p_key) const {
-			return key < p_key.key;
+			return memcmp(this, &p_key, sizeof(MaterialKey)) < 0;
 		}
 	};
 
@@ -145,17 +152,6 @@ class ParticleProcessMaterial : public Material {
 
 	_FORCE_INLINE_ MaterialKey _compute_key() const {
 		MaterialKey mk;
-		mk.key = 0;
-		for (int i = 0; i < PARAM_MAX; i++) {
-			if (tex_parameters[i].is_valid()) {
-				mk.texture_mask |= (1 << i);
-			}
-		}
-		for (int i = 0; i < PARTICLE_FLAG_MAX; i++) {
-			if (particle_flags[i]) {
-				mk.particle_flags |= (1 << i);
-			}
-		}
 
 		mk.texture_color = color_ramp.is_valid() ? 1 : 0;
 		mk.emission_shape = emission_shape;
@@ -165,6 +161,21 @@ class ParticleProcessMaterial : public Material {
 		mk.attractor_enabled = attractor_interaction_enabled;
 		mk.collision_scale = collision_scale;
 		mk.turbulence_enabled = turbulence_enabled;
+		mk.limiter_curve = velocity_limit_curve.is_valid() ? 1 : 0;
+		mk.alpha_curve = alpha_curve.is_valid() ? 1 : 0;
+		mk.emission_curve = emission_curve.is_valid() ? 1 : 0;
+		mk.has_initial_ramp = color_initial_ramp.is_valid() ? 1 : 0;
+
+		for (int i = 0; i < PARAM_MAX; i++) {
+			if (tex_parameters[i].is_valid()) {
+				mk.texture_mask |= ((uint64_t)1 << i);
+			}
+		}
+		for (int i = 0; i < PARTICLE_FLAG_MAX; i++) {
+			if (particle_flags[i]) {
+				mk.particle_flags |= ((uint64_t)1 << i);
+			}
+		}
 
 		return mk;
 	}
@@ -180,44 +191,59 @@ class ParticleProcessMaterial : public Material {
 		StringName initial_angle_min;
 		StringName angular_velocity_min;
 		StringName orbit_velocity_min;
+		StringName radial_velocity_min;
 		StringName linear_accel_min;
 		StringName radial_accel_min;
 		StringName tangent_accel_min;
 		StringName damping_min;
 		StringName scale_min;
+		StringName scale_over_velocity_min;
 		StringName hue_variation_min;
 		StringName anim_speed_min;
 		StringName anim_offset_min;
+		StringName directional_velocity_min;
 
 		StringName initial_linear_velocity_max;
 		StringName initial_angle_max;
 		StringName angular_velocity_max;
 		StringName orbit_velocity_max;
+		StringName radial_velocity_max;
 		StringName linear_accel_max;
 		StringName radial_accel_max;
 		StringName tangent_accel_max;
 		StringName damping_max;
 		StringName scale_max;
+		StringName scale_over_velocity_max;
 		StringName hue_variation_max;
 		StringName anim_speed_max;
 		StringName anim_offset_max;
+		StringName directional_velocity_max;
 
 		StringName angle_texture;
 		StringName angular_velocity_texture;
 		StringName orbit_velocity_texture;
+		StringName radial_velocity_texture;
 		StringName linear_accel_texture;
 		StringName radial_accel_texture;
 		StringName tangent_accel_texture;
 		StringName damping_texture;
 		StringName scale_texture;
+		StringName scale_over_velocity_texture;
 		StringName hue_variation_texture;
 		StringName anim_speed_texture;
 		StringName anim_offset_texture;
+		StringName velocity_limiter_texture;
+		StringName directional_velocity_texture;
 
 		StringName color;
 		StringName color_ramp;
+		StringName alpha_ramp;
+		StringName emission_ramp;
 		StringName color_initial_ramp;
 
+		StringName velocity_limit_curve;
+		StringName velocity_pivot;
+
 		StringName emission_sphere_radius;
 		StringName emission_box_extents;
 		StringName emission_texture_point_count;
@@ -228,6 +254,8 @@ class ParticleProcessMaterial : public Material {
 		StringName emission_ring_height;
 		StringName emission_ring_radius;
 		StringName emission_ring_inner_radius;
+		StringName emission_shape_offset;
+		StringName emission_shape_scale;
 
 		StringName turbulence_enabled;
 		StringName turbulence_noise_strength;
@@ -241,6 +269,7 @@ class ParticleProcessMaterial : public Material {
 		StringName turbulence_initial_displacement_max;
 
 		StringName gravity;
+		StringName inherit_emitter_velocity_ratio;
 
 		StringName lifetime_randomness;
 
@@ -272,7 +301,13 @@ class ParticleProcessMaterial : public Material {
 	Ref tex_parameters[PARAM_MAX];
 	Color color;
 	Ref color_ramp;
+	Ref alpha_curve;
+	Ref emission_curve;
 	Ref color_initial_ramp;
+	Ref velocity_limit_curve;
+
+	bool directional_velocity_global = false;
+	Vector3 velocity_pivot;
 
 	bool particle_flags[PARTICLE_FLAG_MAX];
 
@@ -287,6 +322,8 @@ class ParticleProcessMaterial : public Material {
 	real_t emission_ring_radius = 0.0f;
 	real_t emission_ring_inner_radius = 0.0f;
 	int emission_point_count = 1;
+	Vector3 emission_shape_offset;
+	Vector3 emission_shape_scale;
 
 	bool anim_loop = false;
 
@@ -300,6 +337,7 @@ class ParticleProcessMaterial : public Material {
 	Vector3 gravity;
 
 	double lifetime_randomness = 0.0;
+	double inherit_emitter_velocity_ratio = 0.0;
 
 	SubEmitterMode sub_emitter_mode;
 	double sub_emitter_frequency = 0.0;
@@ -328,6 +366,9 @@ class ParticleProcessMaterial : public Material {
 	void set_flatness(float p_flatness);
 	float get_flatness() const;
 
+	void set_velocity_pivot(const Vector3 &p_pivot);
+	Vector3 get_velocity_pivot();
+
 	void set_param_min(Parameter p_param, float p_value);
 	float get_param_min(Parameter p_param) const;
 
@@ -337,6 +378,11 @@ class ParticleProcessMaterial : public Material {
 	void set_param_texture(Parameter p_param, const Ref &p_texture);
 	Ref get_param_texture(Parameter p_param) const;
 
+	void set_velocity_limit_curve(const Ref &p_texture);
+	Ref get_velocity_limit_curve() const;
+
+	void set_alpha_curve(const Ref &p_texture);
+	Ref get_alpha_curve() const;
 	void set_color(const Color &p_color);
 	Color get_color() const;
 
@@ -346,6 +392,9 @@ class ParticleProcessMaterial : public Material {
 	void set_color_initial_ramp(const Ref &p_texture);
 	Ref get_color_initial_ramp() const;
 
+	void set_emission_curve(const Ref &p_texture);
+	Ref get_emission_curve() const;
+
 	void set_particle_flag(ParticleFlags p_particle_flag, bool p_enable);
 	bool get_particle_flag(ParticleFlags p_particle_flag) const;
 
@@ -391,6 +440,9 @@ class ParticleProcessMaterial : public Material {
 	void set_lifetime_randomness(double p_lifetime);
 	double get_lifetime_randomness() const;
 
+	void set_inherit_velocity_ratio(double p_ratio);
+	double get_inherit_velocity_ratio();
+
 	void set_attractor_interaction_enabled(bool p_enable);
 	bool is_attractor_interaction_enabled() const;
 
@@ -425,6 +477,12 @@ class ParticleProcessMaterial : public Material {
 	void set_sub_emitter_keep_velocity(bool p_enable);
 	bool get_sub_emitter_keep_velocity() const;
 
+	void set_emission_shape_offset(const Vector3 &p_emission_shape_offset);
+	Vector3 get_emission_shape_offset() const;
+
+	void set_emission_shape_scale(const Vector3 &p_emission_shape_scale);
+	Vector3 get_emission_shape_scale() const;
+
 	virtual RID get_shader_rid() const override;
 
 	virtual Shader::Mode get_shader_mode() const override;
diff --git a/servers/rendering/dummy/storage/particles_storage.h b/servers/rendering/dummy/storage/particles_storage.h
index a40c96a8f502..33dad3f2f4fb 100644
--- a/servers/rendering/dummy/storage/particles_storage.h
+++ b/servers/rendering/dummy/storage/particles_storage.h
@@ -47,6 +47,7 @@ class ParticlesStorage : public RendererParticlesStorage {
 	virtual void particles_emit(RID p_particles, const Transform3D &p_transform, const Vector3 &p_velocity, const Color &p_color, const Color &p_custom, uint32_t p_emit_flags) override {}
 	virtual void particles_set_emitting(RID p_particles, bool p_emitting) override {}
 	virtual void particles_set_amount(RID p_particles, int p_amount) override {}
+	virtual void particles_set_amount_ratio(RID p_particles, float p_amount_ratio) override {}
 	virtual void particles_set_lifetime(RID p_particles, double p_lifetime) override {}
 	virtual void particles_set_one_shot(RID p_particles, bool p_one_shot) override {}
 	virtual void particles_set_pre_process_time(RID p_particles, double p_time) override {}
@@ -81,6 +82,8 @@ class ParticlesStorage : public RendererParticlesStorage {
 	virtual AABB particles_get_aabb(RID p_particles) const override { return AABB(); }
 
 	virtual void particles_set_emission_transform(RID p_particles, const Transform3D &p_transform) override {}
+	virtual void particles_set_emitter_velocity(RID p_particles, const Vector3 &p_velocity) override {}
+	virtual void particles_set_interp_to_end(RID p_particles, float p_interp) override {}
 
 	virtual bool particles_get_emitting(RID p_particles) override { return false; }
 	virtual int particles_get_draw_passes(RID p_particles) const override { return 0; }
diff --git a/servers/rendering/renderer_rd/shaders/particles.glsl b/servers/rendering/renderer_rd/shaders/particles.glsl
index 7ba03a27f77f..5fa415472759 100644
--- a/servers/rendering/renderer_rd/shaders/particles.glsl
+++ b/servers/rendering/renderer_rd/shaders/particles.glsl
@@ -67,7 +67,7 @@ struct FrameParams {
 	float delta;
 
 	uint frame;
-	uint pad0;
+	float amount_ratio;
 	uint pad1;
 	uint pad2;
 
@@ -77,6 +77,8 @@ struct FrameParams {
 	float particle_size;
 
 	mat4 emission_transform;
+	vec3 emitter_velocity;
+	float interp_to_end;
 
 	Attractor attractors[MAX_ATTRACTORS];
 	Collider colliders[MAX_COLLIDERS];
diff --git a/servers/rendering/renderer_rd/storage_rd/particles_storage.cpp b/servers/rendering/renderer_rd/storage_rd/particles_storage.cpp
index bf5a597bb930..3065da4d05c6 100644
--- a/servers/rendering/renderer_rd/storage_rd/particles_storage.cpp
+++ b/servers/rendering/renderer_rd/storage_rd/particles_storage.cpp
@@ -72,6 +72,7 @@ ParticlesStorage::ParticlesStorage() {
 		actions.renames["ACTIVE"] = "particle_active";
 		actions.renames["RESTART"] = "restart";
 		actions.renames["CUSTOM"] = "PARTICLE.custom";
+		actions.renames["AMOUNT_RATIO"] = "FRAME.amount_ratio";
 		for (int i = 0; i < ParticlesShader::MAX_USERDATAS; i++) {
 			String udname = "USERDATA" + itos(i + 1);
 			actions.renames[udname] = "PARTICLE.userdata" + itos(i + 1);
@@ -88,6 +89,8 @@ ParticlesStorage::ParticlesStorage() {
 		actions.renames["INDEX"] = "index";
 		//actions.renames["GRAVITY"] = "current_gravity";
 		actions.renames["EMISSION_TRANSFORM"] = "FRAME.emission_transform";
+		actions.renames["EMITTER_VELOCITY"] = "FRAME.emitter_velocity";
+		actions.renames["INTERPOLATE_TO_END"] = "FRAME.interp_to_end";
 		actions.renames["RANDOM_SEED"] = "FRAME.random_seed";
 		actions.renames["FLAG_EMIT_POSITION"] = "EMISSION_FLAG_HAS_POSITION";
 		actions.renames["FLAG_EMIT_ROT_SCALE"] = "EMISSION_FLAG_HAS_ROTATION_SCALE";
@@ -329,6 +332,13 @@ void ParticlesStorage::particles_set_amount(RID p_particles, int p_amount) {
 	particles->dependency.changed_notify(Dependency::DEPENDENCY_CHANGED_PARTICLES);
 }
 
+void ParticlesStorage::particles_set_amount_ratio(RID p_particles, float p_amount_ratio) {
+	Particles *particles = particles_owner.get_or_null(p_particles);
+	ERR_FAIL_NULL(particles);
+
+	particles->amount_ratio = p_amount_ratio;
+}
+
 void ParticlesStorage::particles_set_lifetime(RID p_particles, double p_lifetime) {
 	Particles *particles = particles_owner.get_or_null(p_particles);
 	ERR_FAIL_NULL(particles);
@@ -651,6 +661,20 @@ void ParticlesStorage::particles_set_emission_transform(RID p_particles, const T
 	particles->emission_transform = p_transform;
 }
 
+void ParticlesStorage::particles_set_emitter_velocity(RID p_particles, const Vector3 &p_velocity) {
+	Particles *particles = particles_owner.get_or_null(p_particles);
+	ERR_FAIL_NULL(particles);
+
+	particles->emitter_velocity = p_velocity;
+}
+
+void ParticlesStorage::particles_set_interp_to_end(RID p_particles, float p_interp) {
+	Particles *particles = particles_owner.get_or_null(p_particles);
+	ERR_FAIL_NULL(particles);
+
+	particles->interp_to_end = p_interp;
+}
+
 int ParticlesStorage::particles_get_draw_passes(RID p_particles) const {
 	const Particles *particles = particles_owner.get_or_null(p_particles);
 	ERR_FAIL_NULL_V(particles, 0);
@@ -791,9 +815,13 @@ void ParticlesStorage::_particles_process(Particles *p_particles, double p_delta
 
 	frame_params.cycle = p_particles->cycle_number;
 	frame_params.frame = p_particles->frame_counter++;
-	frame_params.pad0 = 0;
+	frame_params.amount_ratio = p_particles->amount_ratio;
 	frame_params.pad1 = 0;
 	frame_params.pad2 = 0;
+	frame_params.emitter_velocity[0] = p_particles->emitter_velocity.x;
+	frame_params.emitter_velocity[1] = p_particles->emitter_velocity.y;
+	frame_params.emitter_velocity[2] = p_particles->emitter_velocity.z;
+	frame_params.interp_to_end = p_particles->interp_to_end;
 
 	{ //collision and attractors
 
diff --git a/servers/rendering/renderer_rd/storage_rd/particles_storage.h b/servers/rendering/renderer_rd/storage_rd/particles_storage.h
index b93932f482c2..435ef14d7532 100644
--- a/servers/rendering/renderer_rd/storage_rd/particles_storage.h
+++ b/servers/rendering/renderer_rd/storage_rd/particles_storage.h
@@ -123,7 +123,7 @@ class ParticlesStorage : public RendererParticlesStorage {
 		float delta;
 
 		uint32_t frame;
-		uint32_t pad0;
+		float amount_ratio;
 		uint32_t pad1;
 		uint32_t pad2;
 
@@ -134,6 +134,9 @@ class ParticlesStorage : public RendererParticlesStorage {
 
 		float emission_transform[16];
 
+		float emitter_velocity[3];
+		float interp_to_end;
+
 		Attractor attractors[MAX_ATTRACTORS];
 		Collider colliders[MAX_COLLIDERS];
 	};
@@ -235,6 +238,9 @@ class ParticlesStorage : public RendererParticlesStorage {
 		bool force_sub_emit = false;
 
 		Transform3D emission_transform;
+		Vector3 emitter_velocity;
+		float interp_to_end = 0.0;
+		float amount_ratio = 1.0;
 
 		Vector emission_buffer_data;
 
@@ -425,6 +431,7 @@ class ParticlesStorage : public RendererParticlesStorage {
 	virtual void particles_set_mode(RID p_particles, RS::ParticlesMode p_mode) override;
 	virtual void particles_set_emitting(RID p_particles, bool p_emitting) override;
 	virtual void particles_set_amount(RID p_particles, int p_amount) override;
+	virtual void particles_set_amount_ratio(RID p_particles, float p_amount_ratio) override;
 	virtual void particles_set_lifetime(RID p_particles, double p_lifetime) override;
 	virtual void particles_set_one_shot(RID p_particles, bool p_one_shot) override;
 	virtual void particles_set_pre_process_time(RID p_particles, double p_time) override;
@@ -460,6 +467,8 @@ class ParticlesStorage : public RendererParticlesStorage {
 	virtual AABB particles_get_aabb(RID p_particles) const override;
 
 	virtual void particles_set_emission_transform(RID p_particles, const Transform3D &p_transform) override;
+	virtual void particles_set_emitter_velocity(RID p_particles, const Vector3 &p_velocity) override;
+	virtual void particles_set_interp_to_end(RID p_particles, float p_interp_to_end) override;
 
 	virtual bool particles_get_emitting(RID p_particles) override;
 	virtual int particles_get_draw_passes(RID p_particles) const override;
diff --git a/servers/rendering/rendering_server_default.h b/servers/rendering/rendering_server_default.h
index 9ad217533220..955d83c09339 100644
--- a/servers/rendering/rendering_server_default.h
+++ b/servers/rendering/rendering_server_default.h
@@ -490,6 +490,7 @@ class RenderingServerDefault : public RenderingServer {
 	FUNC2(particles_set_emitting, RID, bool)
 	FUNC1R(bool, particles_get_emitting, RID)
 	FUNC2(particles_set_amount, RID, int)
+	FUNC2(particles_set_amount_ratio, RID, float)
 	FUNC2(particles_set_lifetime, RID, double)
 	FUNC2(particles_set_one_shot, RID, bool)
 	FUNC2(particles_set_pre_process_time, RID, double)
@@ -521,6 +522,8 @@ class RenderingServerDefault : public RenderingServer {
 
 	FUNC1R(AABB, particles_get_current_aabb, RID)
 	FUNC2(particles_set_emission_transform, RID, const Transform3D &)
+	FUNC2(particles_set_emitter_velocity, RID, const Vector3 &)
+	FUNC2(particles_set_interp_to_end, RID, float)
 
 	/* PARTICLES COLLISION */
 
diff --git a/servers/rendering/shader_types.cpp b/servers/rendering/shader_types.cpp
index 38574b0597b6..a6b4646f4324 100644
--- a/servers/rendering/shader_types.cpp
+++ b/servers/rendering/shader_types.cpp
@@ -348,6 +348,8 @@ ShaderTypes::ShaderTypes() {
 	shader_modes[RS::SHADER_PARTICLES].functions["start"].built_ins["NUMBER"] = constt(ShaderLanguage::TYPE_UINT);
 	shader_modes[RS::SHADER_PARTICLES].functions["start"].built_ins["INDEX"] = constt(ShaderLanguage::TYPE_UINT);
 	shader_modes[RS::SHADER_PARTICLES].functions["start"].built_ins["EMISSION_TRANSFORM"] = constt(ShaderLanguage::TYPE_MAT4);
+	shader_modes[RS::SHADER_PARTICLES].functions["start"].built_ins["EMITTER_VELOCITY"] = constt(ShaderLanguage::TYPE_VEC3);
+	shader_modes[RS::SHADER_PARTICLES].functions["start"].built_ins["INTERPOLATE_TO_END"] = constt(ShaderLanguage::TYPE_FLOAT);
 	shader_modes[RS::SHADER_PARTICLES].functions["start"].built_ins["RANDOM_SEED"] = constt(ShaderLanguage::TYPE_UINT);
 	shader_modes[RS::SHADER_PARTICLES].functions["start"].built_ins["FLAG_EMIT_POSITION"] = constt(ShaderLanguage::TYPE_UINT);
 	shader_modes[RS::SHADER_PARTICLES].functions["start"].built_ins["FLAG_EMIT_ROT_SCALE"] = constt(ShaderLanguage::TYPE_UINT);
@@ -359,6 +361,7 @@ ShaderTypes::ShaderTypes() {
 	shader_modes[RS::SHADER_PARTICLES].functions["start"].built_ins["RESTART_VELOCITY"] = constt(ShaderLanguage::TYPE_BOOL);
 	shader_modes[RS::SHADER_PARTICLES].functions["start"].built_ins["RESTART_COLOR"] = constt(ShaderLanguage::TYPE_BOOL);
 	shader_modes[RS::SHADER_PARTICLES].functions["start"].built_ins["RESTART_CUSTOM"] = constt(ShaderLanguage::TYPE_BOOL);
+	shader_modes[RS::SHADER_PARTICLES].functions["start"].built_ins["AMOUNT_RATIO"] = ShaderLanguage::TYPE_FLOAT;
 	shader_modes[RS::SHADER_PARTICLES].functions["start"].main_function = true;
 
 	shader_modes[RS::SHADER_PARTICLES].functions["process"].built_ins["COLOR"] = ShaderLanguage::TYPE_VEC4;
@@ -379,6 +382,8 @@ ShaderTypes::ShaderTypes() {
 	shader_modes[RS::SHADER_PARTICLES].functions["process"].built_ins["NUMBER"] = constt(ShaderLanguage::TYPE_UINT);
 	shader_modes[RS::SHADER_PARTICLES].functions["process"].built_ins["INDEX"] = constt(ShaderLanguage::TYPE_UINT);
 	shader_modes[RS::SHADER_PARTICLES].functions["process"].built_ins["EMISSION_TRANSFORM"] = constt(ShaderLanguage::TYPE_MAT4);
+	shader_modes[RS::SHADER_PARTICLES].functions["process"].built_ins["EMITTER_VELOCITY"] = constt(ShaderLanguage::TYPE_VEC3);
+	shader_modes[RS::SHADER_PARTICLES].functions["process"].built_ins["INTERPOLATE_TO_END"] = constt(ShaderLanguage::TYPE_FLOAT);
 	shader_modes[RS::SHADER_PARTICLES].functions["process"].built_ins["RANDOM_SEED"] = constt(ShaderLanguage::TYPE_UINT);
 	shader_modes[RS::SHADER_PARTICLES].functions["process"].built_ins["FLAG_EMIT_POSITION"] = constt(ShaderLanguage::TYPE_UINT);
 	shader_modes[RS::SHADER_PARTICLES].functions["process"].built_ins["FLAG_EMIT_ROT_SCALE"] = constt(ShaderLanguage::TYPE_UINT);
@@ -389,6 +394,7 @@ ShaderTypes::ShaderTypes() {
 	shader_modes[RS::SHADER_PARTICLES].functions["process"].built_ins["COLLISION_NORMAL"] = constt(ShaderLanguage::TYPE_VEC3);
 	shader_modes[RS::SHADER_PARTICLES].functions["process"].built_ins["COLLISION_DEPTH"] = constt(ShaderLanguage::TYPE_FLOAT);
 	shader_modes[RS::SHADER_PARTICLES].functions["process"].built_ins["ATTRACTOR_FORCE"] = constt(ShaderLanguage::TYPE_VEC3);
+	shader_modes[RS::SHADER_PARTICLES].functions["process"].built_ins["AMOUNT_RATIO"] = ShaderLanguage::TYPE_FLOAT;
 	shader_modes[RS::SHADER_PARTICLES].functions["process"].main_function = true;
 
 	{
diff --git a/servers/rendering/storage/particles_storage.h b/servers/rendering/storage/particles_storage.h
index 78c616f6d5e9..4f33de912c74 100644
--- a/servers/rendering/storage/particles_storage.h
+++ b/servers/rendering/storage/particles_storage.h
@@ -49,6 +49,7 @@ class RendererParticlesStorage {
 	virtual bool particles_get_emitting(RID p_particles) = 0;
 
 	virtual void particles_set_amount(RID p_particles, int p_amount) = 0;
+	virtual void particles_set_amount_ratio(RID p_particles, float p_amount_ratio) = 0;
 	virtual void particles_set_lifetime(RID p_particles, double p_lifetime) = 0;
 	virtual void particles_set_one_shot(RID p_particles, bool p_one_shot) = 0;
 	virtual void particles_set_pre_process_time(RID p_particles, double p_time) = 0;
@@ -85,6 +86,8 @@ class RendererParticlesStorage {
 	virtual AABB particles_get_aabb(RID p_particles) const = 0;
 
 	virtual void particles_set_emission_transform(RID p_particles, const Transform3D &p_transform) = 0;
+	virtual void particles_set_emitter_velocity(RID p_particles, const Vector3 &p_velocity) = 0;
+	virtual void particles_set_interp_to_end(RID p_particles, float p_interp_to_end) = 0;
 
 	virtual int particles_get_draw_passes(RID p_particles) const = 0;
 	virtual RID particles_get_draw_pass_mesh(RID p_particles, int p_pass) const = 0;
diff --git a/servers/rendering_server.cpp b/servers/rendering_server.cpp
index 94ff59f7e1c6..4f173ce4cb15 100644
--- a/servers/rendering_server.cpp
+++ b/servers/rendering_server.cpp
@@ -2497,11 +2497,14 @@ void RenderingServer::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("particles_set_emitting", "particles", "emitting"), &RenderingServer::particles_set_emitting);
 	ClassDB::bind_method(D_METHOD("particles_get_emitting", "particles"), &RenderingServer::particles_get_emitting);
 	ClassDB::bind_method(D_METHOD("particles_set_amount", "particles", "amount"), &RenderingServer::particles_set_amount);
+	ClassDB::bind_method(D_METHOD("particles_set_amount_ratio", "particles", "ratio"), &RenderingServer::particles_set_amount_ratio);
 	ClassDB::bind_method(D_METHOD("particles_set_lifetime", "particles", "lifetime"), &RenderingServer::particles_set_lifetime);
 	ClassDB::bind_method(D_METHOD("particles_set_one_shot", "particles", "one_shot"), &RenderingServer::particles_set_one_shot);
 	ClassDB::bind_method(D_METHOD("particles_set_pre_process_time", "particles", "time"), &RenderingServer::particles_set_pre_process_time);
 	ClassDB::bind_method(D_METHOD("particles_set_explosiveness_ratio", "particles", "ratio"), &RenderingServer::particles_set_explosiveness_ratio);
 	ClassDB::bind_method(D_METHOD("particles_set_randomness_ratio", "particles", "ratio"), &RenderingServer::particles_set_randomness_ratio);
+	ClassDB::bind_method(D_METHOD("particles_set_interp_to_end", "particles", "factor"), &RenderingServer::particles_set_interp_to_end);
+	ClassDB::bind_method(D_METHOD("particles_set_emitter_velocity", "particles", "velocity"), &RenderingServer::particles_set_emitter_velocity);
 	ClassDB::bind_method(D_METHOD("particles_set_custom_aabb", "particles", "aabb"), &RenderingServer::particles_set_custom_aabb);
 	ClassDB::bind_method(D_METHOD("particles_set_speed_scale", "particles", "scale"), &RenderingServer::particles_set_speed_scale);
 	ClassDB::bind_method(D_METHOD("particles_set_use_local_coordinates", "particles", "enable"), &RenderingServer::particles_set_use_local_coordinates);
diff --git a/servers/rendering_server.h b/servers/rendering_server.h
index 9d186f086c53..fe7c039e91fb 100644
--- a/servers/rendering_server.h
+++ b/servers/rendering_server.h
@@ -660,6 +660,7 @@ class RenderingServer : public Object {
 	virtual void particles_set_emitting(RID p_particles, bool p_enable) = 0;
 	virtual bool particles_get_emitting(RID p_particles) = 0;
 	virtual void particles_set_amount(RID p_particles, int p_amount) = 0;
+	virtual void particles_set_amount_ratio(RID p_particles, float p_amount_ratio) = 0;
 	virtual void particles_set_lifetime(RID p_particles, double p_lifetime) = 0;
 	virtual void particles_set_one_shot(RID p_particles, bool p_one_shot) = 0;
 	virtual void particles_set_pre_process_time(RID p_particles, double p_time) = 0;
@@ -717,6 +718,8 @@ class RenderingServer : public Object {
 	virtual AABB particles_get_current_aabb(RID p_particles) = 0;
 
 	virtual void particles_set_emission_transform(RID p_particles, const Transform3D &p_transform) = 0; // This is only used for 2D, in 3D it's automatic.
+	virtual void particles_set_emitter_velocity(RID p_particles, const Vector3 &p_velocity) = 0;
+	virtual void particles_set_interp_to_end(RID p_particles, float p_interp) = 0;
 
 	/* PARTICLES COLLISION API */