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[rlgl] Add support for glPolygonOffset() #4580

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[rlgl] Add support for glPolygonOffset() #4580

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4735f5d
adding support for opengl polygon offset functions
mikeemm Dec 5, 2024
22ed169
now accounting for missing polygon offset definitions in GLES
mikeemm Dec 5, 2024
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48 changes: 48 additions & 0 deletions src/rlgl.h
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Original file line number Diff line number Diff line change
@@ -691,6 +691,13 @@ RLAPI void rlDisableSmoothLines(void); // Disable line aliasing
RLAPI void rlEnableStereoRender(void); // Enable stereo rendering
RLAPI void rlDisableStereoRender(void); // Disable stereo rendering
RLAPI bool rlIsStereoRenderEnabled(void); // Check if stereo render is enabled
RLAPI void rlEnablePolygonOffsetFill(void); // Enable depth offset for faces
RLAPI void rlDisablePolygonOffsetFill(void); // Disable depth offset for faces
RLAPI void rlEnablePolygonOffsetLine(void); // Enable depth offset for lines
RLAPI void rlDisablePolygonOffsetLine(void); // Disable depth offset for lines
RLAPI void rlEnablePolygonOffsetPoint(void); // Enable depth offset for points
RLAPI void rlDisablePolygonOffsetPoint(void); // Disable depth offset for points
RLAPI void rlSetPolygonOffset(float factor, float units);// Set polygon depth offset

RLAPI void rlClearColor(unsigned char r, unsigned char g, unsigned char b, unsigned char a); // Clear color buffer with color
RLAPI void rlClearScreenBuffers(void); // Clear used screen buffers (color and depth)
@@ -2048,6 +2055,47 @@ bool rlIsStereoRenderEnabled(void)
#endif
}

// Enable depth offset for faces
void rlEnablePolygonOffsetFill(void) { glEnable(GL_POLYGON_OFFSET_FILL); }

// Disable depth offset for faces
void rlDisablePolygonOffsetFill(void) { glDisable(GL_POLYGON_OFFSET_FILL); }

// Enable depth offset for lines
void rlEnablePolygonOffsetLine(void)
{
#if defined(GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_33)
glEnable(GL_POLYGON_OFFSET_LINE);
#endif
}

// Disable depth offset for lines
void rlDisablePolygonOffsetLine(void)
{
#if defined(GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_33)
glDisable(GL_POLYGON_OFFSET_LINE);
#endif
}

// Enable depth offset for points
void rlEnablePolygonOffsetPoint(void)
{
#if defined(GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_33)
glEnable(GL_POLYGON_OFFSET_POINT);
#endif
}

// Disable depth offset for points
void rlDisablePolygonOffsetPoint(void)
{
#if defined(GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_33)
glDisable(GL_POLYGON_OFFSET_POINT);
#endif
}

// Set polygon depth offset
void rlSetPolygonOffset(float factor, float units) { glPolygonOffset(factor, units); }

// Clear color buffer with color
void rlClearColor(unsigned char r, unsigned char g, unsigned char b, unsigned char a)
{