Merge pull request #61 from pspdev/add-texture-example

Add sprite and sdl2_image example

Author: sharkwouter

_includes/samples/sdl2_image/CMakeLists.txt

@@ -0,0 +1,31 @@
+cmake_minimum_required(VERSION 3.5)
+
+project(sdl2-image)
+
+add_executable(${PROJECT_NAME} main.c)
+
+include(FindPkgConfig)
+pkg_search_module(SDL2 REQUIRED sdl2)
+pkg_search_module(SDL2_IMAGE REQUIRED SDL2_image)
+
+target_include_directories(${PROJECT_NAME} PRIVATE
+    ${SDL2_INCLUDE_DIRS}
+    ${SDL2_IMAGE_INCLUDE_DIRS}
+)
+
+target_link_libraries(${PROJECT_NAME} PRIVATE
+    ${SDL2_LIBRARIES}
+    ${SDL2_IMAGE_LIBRARIES}
+)
+
+if(PSP)
+    # Create an EBOOT.PBP file
+    create_pbp_file(
+        TARGET ${PROJECT_NAME}
+        ICON_PATH NULL
+        BACKGROUND_PATH NULL
+        PREVIEW_PATH NULL
+        TITLE ${PROJECT_NAME}
+        VERSION 01.00
+    )
+endif()

_includes/samples/sdl2_image/main.c

@@ -0,0 +1,73 @@
+#include <SDL.h>
+#include <SDL_image.h>
+
+int main(int argc, char *argv[])
+{
+    SDL_Init(SDL_INIT_VIDEO | SDL_INIT_GAMECONTROLLER);
+
+    // Enable png support for SDL2_image
+    IMG_Init(IMG_INIT_PNG);
+
+    SDL_Window * window = SDL_CreateWindow(
+        "window",
+        SDL_WINDOWPOS_UNDEFINED,
+        SDL_WINDOWPOS_UNDEFINED,
+        480,
+        272,
+        0
+    );
+
+    SDL_Renderer * renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
+
+    // Load the texture
+    SDL_Surface * pixels = IMG_Load("grass.png");
+    SDL_Texture * sprite = SDL_CreateTextureFromSurface(renderer, pixels);
+    SDL_FreeSurface(pixels);
+
+    // Store the dimensions of the texture
+    SDL_Rect sprite_rect;
+    SDL_QueryTexture(sprite, NULL, NULL, &sprite_rect.w, &sprite_rect.h);
+
+    // Set the position to draw to in the middle of the screen
+    sprite_rect.x = 480/2 - sprite_rect.w/2;
+    sprite_rect.y = 272/2 - sprite_rect.h/2;
+
+    int running = 1;
+    SDL_Event event;
+    while (running) { 
+        // Process input
+        if (SDL_PollEvent(&event)) {
+            switch (event.type) {
+                case SDL_QUIT:
+                    // End the loop if the programs is being closed
+                    running = 0;
+                    break;
+                case SDL_CONTROLLERDEVICEADDED:
+                    // Connect a controller when it is connected
+                    SDL_GameControllerOpen(event.cdevice.which);
+                    break;
+                case SDL_CONTROLLERBUTTONDOWN:
+                    if(event.cbutton.button == SDL_CONTROLLER_BUTTON_START) {
+                        // Close the program if start is pressed
+                        running = 0;
+                    }
+                    break;
+            }
+        }
+
+        // Clear the screen
+        SDL_RenderClear(renderer);
+
+        // Draw a red square
+        SDL_RenderCopy(renderer, sprite, NULL, &sprite_rect);
+
+        // Draw everything on a white background
+        SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
+        SDL_RenderPresent(renderer);
+    }
+    SDL_DestroyRenderer(renderer);
+    SDL_DestroyWindow(window);
+    SDL_Quit();
+
+    return 0;
+}

_includes/samples/shape/main.c

@@ -2,7 +2,7 @@
 #include <pspgu.h>
 #include <pspdisplay.h>
 
-PSP_MODULE_INFO("gutest", 0, 1, 0);
+PSP_MODULE_INFO("shape", 0, 1, 0);
 PSP_MAIN_THREAD_ATTR(THREAD_ATTR_VFPU | THREAD_ATTR_USER);
 
 #define BUFFER_WIDTH 512
@@ -11,9 +11,10 @@ PSP_MAIN_THREAD_ATTR(THREAD_ATTR_VFPU | THREAD_ATTR_USER);
 #define SCREEN_HEIGHT BUFFER_HEIGHT
 
 char list[0x20000] __attribute__((aligned(64)));
+int running;
 
 int exit_callback(int arg1, int arg2, void *common) {
-    sceKernelExitGame();
+    running = 0;
     return 0;
 }
 
@@ -101,7 +102,7 @@ int main() {
     // Setup the library used for rendering
     initGu();
 
-    int running = 1;
+    running = 1;
     while(running){
         startFrame();
 

_includes/samples/sprite/CMakeLists.txt

@@ -0,0 +1,21 @@
+cmake_minimum_required(VERSION 3.5)
+
+project(texture)
+
+add_executable(${PROJECT_NAME} main.c)
+
+target_link_libraries(${PROJECT_NAME} PRIVATE
+    pspgu
+    pspge
+    pspdisplay
+)
+
+# Create an EBOOT.PBP file
+create_pbp_file(
+    TARGET ${PROJECT_NAME}
+    ICON_PATH NULL
+    BACKGROUND_PATH NULL
+    PREVIEW_PATH NULL
+    TITLE ${PROJECT_NAME}
+    VERSION 01.00
+)

_includes/samples/sprite/main.c

@@ -0,0 +1,142 @@
+#include <pspkernel.h>
+#include <pspctrl.h>
+#include <pspdisplay.h>
+#include <pspgu.h>
+
+#define STB_IMAGE_IMPLEMENTATION
+#include <stb_image.h>
+
+PSP_MODULE_INFO("texture", 0, 1, 0);
+PSP_MAIN_THREAD_ATTR(THREAD_ATTR_VFPU | THREAD_ATTR_USER);
+
+#define BUFFER_WIDTH 512
+#define BUFFER_HEIGHT 272
+#define SCREEN_WIDTH 480
+#define SCREEN_HEIGHT BUFFER_HEIGHT
+
+typedef struct
+{
+    float u, v;
+    uint32_t colour;
+    float x, y, z;
+} TextureVertex;
+
+typedef struct
+{
+    int width, height;
+    uint32_t * data;
+} Texture;
+
+char list[0x20000] __attribute__((aligned(64)));
+
+void * fbp0;
+void * fbp1;
+Texture texture;
+int running;
+
+int exit_callback(int arg1, int arg2, void *common) {
+    running = 0;
+    return 0;
+}
+
+int callback_thread(SceSize args, void *argp) {
+    int cbid = sceKernelCreateCallback("Exit Callback", exit_callback, NULL);
+    sceKernelRegisterExitCallback(cbid);
+    sceKernelSleepThreadCB();
+    return 0;
+}
+
+int setup_callbacks(void) {
+    int thid = sceKernelCreateThread("update_thread", callback_thread, 0x11, 0xFA0, 0, 0);
+    if(thid >= 0)
+        sceKernelStartThread(thid, 0, 0);
+    return thid;
+}
+
+void initGu(){
+    sceGuInit();
+
+    fbp0 = guGetStaticVramBuffer(BUFFER_WIDTH, BUFFER_HEIGHT, GU_PSM_8888);
+    fbp1 = guGetStaticVramBuffer(BUFFER_WIDTH, BUFFER_HEIGHT, GU_PSM_8888);
+
+    //Set up buffers
+    sceGuStart(GU_DIRECT, list);
+    sceGuDrawBuffer(GU_PSM_8888, fbp0, BUFFER_WIDTH);
+    sceGuDispBuffer(SCREEN_WIDTH,SCREEN_HEIGHT,fbp1, BUFFER_WIDTH);
+    
+    // We do not care about the depth buffer in this example
+    sceGuDepthBuffer(fbp0, 0); // Set depth buffer to a length of 0
+    sceGuDisable(GU_DEPTH_TEST); // Disable depth testing
+
+    //Set up viewport
+    sceGuOffset(2048 - (SCREEN_WIDTH / 2), 2048 - (SCREEN_HEIGHT / 2));
+    sceGuViewport(2048, 2048, SCREEN_WIDTH, SCREEN_HEIGHT);
+    sceGuEnable(GU_SCISSOR_TEST);
+    sceGuScissor(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
+
+    // Start a new frame and enable the display
+    sceGuFinish();
+    sceGuDisplay(GU_TRUE);
+}
+
+void endGu(){
+    sceGuDisplay(GU_FALSE);
+    sceGuTerm();
+}
+
+void startFrame(){
+    sceGuStart(GU_DIRECT, list);
+    sceGuClearColor(0xFFFFFFFF); // White background
+    sceGuClear(GU_COLOR_BUFFER_BIT);
+}
+
+void endFrame(){
+    sceGuFinish();
+    sceGuSync(0, 0);
+    sceDisplayWaitVblankStart();
+    sceGuSwapBuffers();
+}
+
+void drawTexture(float x, float y, float w, float h) {
+    static TextureVertex vertices[2];
+
+    vertices[0].u = 0.0f;
+    vertices[0].v = 0.0f;
+    vertices[0].colour = 0xFFFFFFFF;
+    vertices[0].x = x;
+    vertices[0].y = y;
+    vertices[0].z = 0.0f;
+
+    vertices[1].u = w;
+    vertices[1].v = h;
+    vertices[1].colour = 0xFFFFFFFF;
+    vertices[1].x = x + w;
+    vertices[1].y = y + h;
+    vertices[1].z = 0.0f;
+
+    sceGuTexMode(GU_PSM_8888, 0, 0, GU_FALSE);
+    sceGuTexFunc(GU_TFX_REPLACE, GU_TCC_RGB);
+    sceGuTexImage(0, texture.width, texture.height, texture.width, texture.data);
+
+    sceGuEnable(GU_TEXTURE_2D); 
+    sceGuDrawArray(GU_SPRITES, GU_COLOR_8888 | GU_TEXTURE_32BITF | GU_VERTEX_32BITF | GU_TRANSFORM_2D, 2, 0, vertices);
+    sceGuDisable(GU_TEXTURE_2D);
+}
+
+
+int main() {
+    initGu();
+
+    texture.data = (uint32_t *) stbi_load("grass.png", &texture.width, &texture.height, NULL, 4);
+
+    running = 1;
+    while(running){
+        startFrame();
+
+        drawTexture(SCREEN_WIDTH / 2 - 8, SCREEN_HEIGHT / 2 - 8, 16, 16);
+
+        endFrame();
+    }
+
+    return 0;
+}