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author | bonmas14 <bonmas14@gmail.com> | 2025-09-20 22:28:15 +0300 |
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committer | bonmas14 <bonmas14@gmail.com> | 2025-09-20 22:28:15 +0300 |
commit | cdda4c4182c9ee068567529715e4a5c68a8efb58 (patch) | |
tree | 38a63f62a64018a2d35fc33354f8589fd33b7514 /deps/raylib/examples/shaders/shaders_custom_uniform.c | |
download | c_wizard-cdda4c4182c9ee068567529715e4a5c68a8efb58.tar.gz c_wizard-cdda4c4182c9ee068567529715e4a5c68a8efb58.zip |
Init commit v1.0
Diffstat (limited to 'deps/raylib/examples/shaders/shaders_custom_uniform.c')
-rw-r--r-- | deps/raylib/examples/shaders/shaders_custom_uniform.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/deps/raylib/examples/shaders/shaders_custom_uniform.c b/deps/raylib/examples/shaders/shaders_custom_uniform.c new file mode 100644 index 0000000..9d991bd --- /dev/null +++ b/deps/raylib/examples/shaders/shaders_custom_uniform.c @@ -0,0 +1,129 @@ +/******************************************************************************************* +* +* raylib [shaders] example - Postprocessing with custom uniform variable +* +* 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 + +//------------------------------------------------------------------------------------ +// 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 - custom uniform variable"); + + // Define the camera to look into our 3d world + Camera camera = { 0 }; + camera.position = (Vector3){ 8.0f, 8.0f, 8.0f }; // Camera position + camera.target = (Vector3){ 0.0f, 1.5f, 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/barracks.obj"); // Load OBJ model + Texture2D texture = LoadTexture("resources/models/barracks_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 postprocessing shader + // NOTE: Defining 0 (NULL) for vertex shader forces usage of internal default vertex shader + Shader shader = LoadShader(0, TextFormat("resources/shaders/glsl%i/swirl.fs", GLSL_VERSION)); + + // Get variable (uniform) location on the shader to connect with the program + // NOTE: If uniform variable could not be found in the shader, function returns -1 + int swirlCenterLoc = GetShaderLocation(shader, "center"); + + float swirlCenter[2] = { (float)screenWidth/2, (float)screenHeight/2 }; + + // 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); + + Vector2 mousePosition = GetMousePosition(); + + swirlCenter[0] = mousePosition.x; + swirlCenter[1] = screenHeight - mousePosition.y; + + // Send new value to the shader to be used on drawing + SetShaderValue(shader, swirlCenterLoc, swirlCenter, SHADER_UNIFORM_VEC2); + //---------------------------------------------------------------------------------- + + // Draw + //---------------------------------------------------------------------------------- + BeginTextureMode(target); // Enable drawing to texture + ClearBackground(RAYWHITE); // Clear texture background + + BeginMode3D(camera); // Begin 3d mode drawing + DrawModel(model, position, 0.5f, WHITE); // Draw 3d model with texture + DrawGrid(10, 1.0f); // Draw a grid + EndMode3D(); // End 3d mode drawing, returns to orthographic 2d mode + + DrawText("TEXT DRAWN IN RENDER TEXTURE", 200, 10, 30, RED); + EndTextureMode(); // End drawing to texture (now we have a texture available for next passes) + + BeginDrawing(); + ClearBackground(RAYWHITE); // Clear screen background + + // Enable shader using the custom uniform + BeginShaderMode(shader); + // 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 some 2d text over drawn texture + DrawText("(c) Barracks 3D model by Alberto Cano", screenWidth - 220, screenHeight - 20, 10, GRAY); + DrawFPS(10, 10); + EndDrawing(); + //---------------------------------------------------------------------------------- + } + + // De-Initialization + //-------------------------------------------------------------------------------------- + UnloadShader(shader); // Unload shader + UnloadTexture(texture); // Unload texture + UnloadModel(model); // Unload model + UnloadRenderTexture(target); // Unload render texture + + CloseWindow(); // Close window and OpenGL context + //-------------------------------------------------------------------------------------- + + return 0; +}
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