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Diffstat (limited to 'deps/raylib/examples/shaders/shaders_postprocessing.c')
| -rw-r--r-- | deps/raylib/examples/shaders/shaders_postprocessing.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/deps/raylib/examples/shaders/shaders_postprocessing.c b/deps/raylib/examples/shaders/shaders_postprocessing.c new file mode 100644 index 0000000..54ffae9 --- /dev/null +++ b/deps/raylib/examples/shaders/shaders_postprocessing.c @@ -0,0 +1,177 @@ +/******************************************************************************************* +* +* raylib [shaders] example - Apply a postprocessing shader to a scene +* +* NOTE: This example requires raylib OpenGL 3.3 or ES2 versions for shaders support, +* OpenGL 1.1 does not support shaders, recompile raylib to OpenGL 3.3 version. +* +* NOTE: Shaders used in this example are #version 330 (OpenGL 3.3), to test this example +* on OpenGL ES 2.0 platforms (Android, Raspberry Pi, HTML5), use #version 100 shaders +* raylib comes with shaders ready for both versions, check raylib/shaders install folder +* +* Example originally created with raylib 1.3, last time updated with raylib 4.0 +* +* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified, +* BSD-like license that allows static linking with closed source software +* +* Copyright (c) 2015-2024 Ramon Santamaria (@raysan5) +* +********************************************************************************************/ + +#include "raylib.h" + +#if defined(PLATFORM_DESKTOP) + #define GLSL_VERSION 330 +#else // PLATFORM_ANDROID, PLATFORM_WEB + #define GLSL_VERSION 100 +#endif + +#define MAX_POSTPRO_SHADERS 12 + +typedef enum { + FX_GRAYSCALE = 0, + FX_POSTERIZATION, + FX_DREAM_VISION, + FX_PIXELIZER, + FX_CROSS_HATCHING, + FX_CROSS_STITCHING, + FX_PREDATOR_VIEW, + FX_SCANLINES, + FX_FISHEYE, + FX_SOBEL, + FX_BLOOM, + FX_BLUR, + //FX_FXAA +} PostproShader; + +static const char *postproShaderText[] = { + "GRAYSCALE", + "POSTERIZATION", + "DREAM_VISION", + "PIXELIZER", + "CROSS_HATCHING", + "CROSS_STITCHING", + "PREDATOR_VIEW", + "SCANLINES", + "FISHEYE", + "SOBEL", + "BLOOM", + "BLUR", + //"FXAA" +}; + +//------------------------------------------------------------------------------------ +// Program main entry point +//------------------------------------------------------------------------------------ +int main(void) +{ + // Initialization + //-------------------------------------------------------------------------------------- + const int screenWidth = 800; + const int screenHeight = 450; + + SetConfigFlags(FLAG_MSAA_4X_HINT); // Enable Multi Sampling Anti Aliasing 4x (if available) + + InitWindow(screenWidth, screenHeight, "raylib [shaders] example - postprocessing shader"); + + // Define the camera to look into our 3d world + Camera camera = { 0 }; + camera.position = (Vector3){ 2.0f, 3.0f, 2.0f }; // Camera position + camera.target = (Vector3){ 0.0f, 1.0f, 0.0f }; // Camera looking at point + camera.up = (Vector3){ 0.0f, 1.0f, 0.0f }; // Camera up vector (rotation towards target) + camera.fovy = 45.0f; // Camera field-of-view Y + camera.projection = CAMERA_PERSPECTIVE; // Camera projection type + + Model model = LoadModel("resources/models/church.obj"); // Load OBJ model + Texture2D texture = LoadTexture("resources/models/church_diffuse.png"); // Load model texture (diffuse map) + model.materials[0].maps[MATERIAL_MAP_DIFFUSE].texture = texture; // Set model diffuse texture + + Vector3 position = { 0.0f, 0.0f, 0.0f }; // Set model position + + // Load all postpro shaders + // NOTE 1: All postpro shader use the base vertex shader (DEFAULT_VERTEX_SHADER) + // NOTE 2: We load the correct shader depending on GLSL version + Shader shaders[MAX_POSTPRO_SHADERS] = { 0 }; + + // NOTE: Defining 0 (NULL) for vertex shader forces usage of internal default vertex shader + shaders[FX_GRAYSCALE] = LoadShader(0, TextFormat("resources/shaders/glsl%i/grayscale.fs", GLSL_VERSION)); + shaders[FX_POSTERIZATION] = LoadShader(0, TextFormat("resources/shaders/glsl%i/posterization.fs", GLSL_VERSION)); + shaders[FX_DREAM_VISION] = LoadShader(0, TextFormat("resources/shaders/glsl%i/dream_vision.fs", GLSL_VERSION)); + shaders[FX_PIXELIZER] = LoadShader(0, TextFormat("resources/shaders/glsl%i/pixelizer.fs", GLSL_VERSION)); + shaders[FX_CROSS_HATCHING] = LoadShader(0, TextFormat("resources/shaders/glsl%i/cross_hatching.fs", GLSL_VERSION)); + shaders[FX_CROSS_STITCHING] = LoadShader(0, TextFormat("resources/shaders/glsl%i/cross_stitching.fs", GLSL_VERSION)); + shaders[FX_PREDATOR_VIEW] = LoadShader(0, TextFormat("resources/shaders/glsl%i/predator.fs", GLSL_VERSION)); + shaders[FX_SCANLINES] = LoadShader(0, TextFormat("resources/shaders/glsl%i/scanlines.fs", GLSL_VERSION)); + shaders[FX_FISHEYE] = LoadShader(0, TextFormat("resources/shaders/glsl%i/fisheye.fs", GLSL_VERSION)); + shaders[FX_SOBEL] = LoadShader(0, TextFormat("resources/shaders/glsl%i/sobel.fs", GLSL_VERSION)); + shaders[FX_BLOOM] = LoadShader(0, TextFormat("resources/shaders/glsl%i/bloom.fs", GLSL_VERSION)); + shaders[FX_BLUR] = LoadShader(0, TextFormat("resources/shaders/glsl%i/blur.fs", GLSL_VERSION)); + + int currentShader = FX_GRAYSCALE; + + // Create a RenderTexture2D to be used for render to texture + RenderTexture2D target = LoadRenderTexture(screenWidth, screenHeight); + + SetTargetFPS(60); // Set our game to run at 60 frames-per-second + //-------------------------------------------------------------------------------------- + + // Main game loop + while (!WindowShouldClose()) // Detect window close button or ESC key + { + // Update + //---------------------------------------------------------------------------------- + UpdateCamera(&camera, CAMERA_ORBITAL); + + if (IsKeyPressed(KEY_RIGHT)) currentShader++; + else if (IsKeyPressed(KEY_LEFT)) currentShader--; + + if (currentShader >= MAX_POSTPRO_SHADERS) currentShader = 0; + else if (currentShader < 0) currentShader = MAX_POSTPRO_SHADERS - 1; + //---------------------------------------------------------------------------------- + + // Draw + //---------------------------------------------------------------------------------- + BeginTextureMode(target); // Enable drawing to texture + ClearBackground(RAYWHITE); // Clear texture background + + BeginMode3D(camera); // Begin 3d mode drawing + DrawModel(model, position, 0.1f, WHITE); // Draw 3d model with texture + DrawGrid(10, 1.0f); // Draw a grid + EndMode3D(); // End 3d mode drawing, returns to orthographic 2d mode + EndTextureMode(); // End drawing to texture (now we have a texture available for next passes) + + BeginDrawing(); + ClearBackground(RAYWHITE); // Clear screen background + + // Render generated texture using selected postprocessing shader + BeginShaderMode(shaders[currentShader]); + // NOTE: Render texture must be y-flipped due to default OpenGL coordinates (left-bottom) + DrawTextureRec(target.texture, (Rectangle){ 0, 0, (float)target.texture.width, (float)-target.texture.height }, (Vector2){ 0, 0 }, WHITE); + EndShaderMode(); + + // Draw 2d shapes and text over drawn texture + DrawRectangle(0, 9, 580, 30, Fade(LIGHTGRAY, 0.7f)); + + DrawText("(c) Church 3D model by Alberto Cano", screenWidth - 200, screenHeight - 20, 10, GRAY); + DrawText("CURRENT POSTPRO SHADER:", 10, 15, 20, BLACK); + DrawText(postproShaderText[currentShader], 330, 15, 20, RED); + DrawText("< >", 540, 10, 30, DARKBLUE); + DrawFPS(700, 15); + EndDrawing(); + //---------------------------------------------------------------------------------- + } + + // De-Initialization + //-------------------------------------------------------------------------------------- + // Unload all postpro shaders + for (int i = 0; i < MAX_POSTPRO_SHADERS; i++) UnloadShader(shaders[i]); + + UnloadTexture(texture); // Unload texture + UnloadModel(model); // Unload model + UnloadRenderTexture(target); // Unload render texture + + CloseWindow(); // Close window and OpenGL context + //-------------------------------------------------------------------------------------- + + return 0; +} |