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@ -6,7 +6,7 @@ |
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* |
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* Example originally created with raylib 5.6-dev, last time updated with raylib 5.6-dev |
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* |
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* Example contributed by Luís Almeida (@luis605) |
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* Example contributed by Luís Almeida (@luis605) and reviewed by Ramon Santamaria (@raysan5) |
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* |
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* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified, |
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* BSD-like license that allows static linking with closed source software |
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@ -16,6 +16,7 @@ |
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********************************************************************************************/ |
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#include "raylib.h" |
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#include "rlgl.h" |
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#if defined(PLATFORM_DESKTOP) |
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@ -24,7 +25,14 @@ |
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#define GLSL_VERSION 100 |
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#endif |
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RenderTexture2D LoadRenderTextureWithDepth(int width, int height); |
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//-------------------------------------------------------------------------------------- |
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// Module Functions Declaration |
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//-------------------------------------------------------------------------------------- |
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// Load custom render texture with depth texture attached |
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static RenderTexture2D LoadRenderTextureDepthTex(int width, int height); |
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// Unload render texture from GPU memory (VRAM) |
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static void UnloadRenderTextureDepthTex(RenderTexture2D target); |
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//------------------------------------------------------------------------------------ |
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// Program main entry point |
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@ -38,7 +46,7 @@ int main(void) |
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InitWindow(screenWidth, screenHeight, "raylib [shaders] example - depth rendering"); |
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// Init camera |
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// Define the camera to look into our 3d world |
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Camera camera = { 0 }; |
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camera.position = (Vector3){ 4.0f, 1.0f, 5.0f }; |
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camera.target = (Vector3){ 0.0f, 0.0f, 0.0f }; |
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@ -46,8 +54,8 @@ int main(void) |
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camera.fovy = 45.0f; |
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camera.projection = CAMERA_PERSPECTIVE; |
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// Load an empty render texture with a depth texture |
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RenderTexture2D target = LoadRenderTextureWithDepth(screenWidth, screenHeight); |
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// Load render texture with a depth texture attached |
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RenderTexture2D target = LoadRenderTextureDepthTex(screenWidth, screenHeight); |
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// Load depth shader and get depth texture shader location |
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Shader depthShader = LoadShader(0, TextFormat("resources/shaders/glsl%i/depth.fs", GLSL_VERSION)); |
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@ -55,7 +63,7 @@ int main(void) |
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int flipTextureLoc = GetShaderLocation(depthShader, "flipY"); |
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SetShaderValue(depthShader, flipTextureLoc, (int[]){ 1 }, SHADER_UNIFORM_INT); // Flip Y texture |
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// Load models |
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// Load scene models |
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Model cube = LoadModelFromMesh(GenMeshCube(1.0f, 1.0f, 1.0f)); |
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Model floor = LoadModelFromMesh(GenMeshPlane(20.0f, 20.0f, 1, 1)); |
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@ -78,12 +86,14 @@ int main(void) |
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ClearBackground(WHITE); |
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BeginMode3D(camera); |
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DrawModel(cube, (Vector3){ 0.0f, 0.0f, 0.0f }, 3.0f, YELLOW); |
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DrawModel(cube, (Vector3){ 0.0f, 0.0f, 0.0f }, 3.0f, YELLOW); |
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DrawModel(floor, (Vector3){ 10.0f, 0.0f, 2.0f }, 2.0f, RED); |
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EndMode3D(); |
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EndTextureMode(); |
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// Draw into screen (main framebuffer) |
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BeginDrawing(); |
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ClearBackground(RAYWHITE); |
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BeginShaderMode(depthShader); |
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SetShaderValueTexture(depthShader, depthLoc, target.depth); |
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@ -106,19 +116,24 @@ int main(void) |
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//-------------------------------------------------------------------------------------- |
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UnloadModel(cube); // Unload model |
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UnloadModel(floor); // Unload model |
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UnloadRenderTexture(target); // Unload render texture |
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UnloadRenderTextureDepthTex(target); |
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UnloadShader(depthShader); // Unload shader |
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CloseWindow(); // Close window and OpenGL context |
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//-------------------------------------------------------------------------------------- |
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return 0; |
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} |
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RenderTexture2D LoadRenderTextureWithDepth(int width, int height) |
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//-------------------------------------------------------------------------------------- |
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// Module Functions Definition |
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//-------------------------------------------------------------------------------------- |
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// Load custom render texture, create a writable depth texture buffer |
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static RenderTexture2D LoadRenderTextureDepthTex(int width, int height) |
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{ |
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RenderTexture2D target = {0}; |
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RenderTexture2D target = { 0 }; |
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target.id = rlLoadFramebuffer(); // Load an empty framebuffer |
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target.id = rlLoadFramebuffer(); // Load an empty framebuffer |
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if (target.id > 0) |
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{ |
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@ -131,11 +146,11 @@ RenderTexture2D LoadRenderTextureWithDepth(int width, int height) |
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target.texture.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8; |
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target.texture.mipmaps = 1; |
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// Create depth texture |
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// Create depth texture buffer (instead of raylib default renderbuffer) |
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target.depth.id = rlLoadTextureDepth(width, height, false); |
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target.depth.width = width; |
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target.depth.height = height; |
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target.depth.format = 19; //DEPTH_COMPONENT_24BIT? THIS DOESN'T EXIST IN RAYLIB |
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target.depth.format = 19; // DEPTH_COMPONENT_24BIT: Not defined in raylib |
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target.depth.mipmaps = 1; |
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// Attach color texture and depth texture to FBO |
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@ -150,4 +165,19 @@ RenderTexture2D LoadRenderTextureWithDepth(int width, int height) |
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else TRACELOG(LOG_WARNING, "FBO: Framebuffer object can not be created"); |
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return target; |
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} |
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// Unload render texture from GPU memory (VRAM) |
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void UnloadRenderTextureDepthTex(RenderTexture2D target) |
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{ |
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if (target.id > 0) |
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{ |
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// Color texture attached to FBO is deleted |
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rlUnloadTexture(target.texture.id); |
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rlUnloadTexture(target.depth.id); |
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// NOTE: Depth texture is automatically |
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// queried and deleted before deleting framebuffer |
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rlUnloadFramebuffer(target.id); |
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} |
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} |
Ray
2 months ago
