raylib/examples/shaders/shaders_model_shader.c

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/*******************************************************************************************
*
* raylib [shaders] example - Apply a shader to a 3d model
*
* 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
*
* This example has been created using raylib 1.3 (www.raylib.com)
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
* Copyright (c) 2014 Ramon Santamaria (@raysan5)
*
********************************************************************************************/
#include "raylib.h"
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#if defined(PLATFORM_DESKTOP)
#define GLSL_VERSION 330
#else // PLATFORM_RPI, PLATFORM_ANDROID, PLATFORM_WEB
#define GLSL_VERSION 100
#endif
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int main(void)
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{
// Initialization
//--------------------------------------------------------------------------------------
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const int screenWidth = 800;
const int screenHeight = 450;
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SetConfigFlags(FLAG_MSAA_4X_HINT); // Enable Multi Sampling Anti Aliasing 4x (if available)
InitWindow(screenWidth, screenHeight, "raylib [shaders] example - model shader");
// 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, 4.0f, 4.0f };
camera.target = (Vector3){ 0.0f, 1.0f, -1.0f };
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camera.up = (Vector3){ 0.0f, 1.0f, 0.0f };
camera.fovy = 45.0f;
camera.projection = CAMERA_PERSPECTIVE;
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Model model = LoadModel("resources/models/watermill.obj"); // Load OBJ model
Texture2D texture = LoadTexture("resources/models/watermill_diffuse.png"); // Load model texture
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// Load shader for model
// NOTE: Defining 0 (NULL) for vertex shader forces usage of internal default vertex shader
Shader shader = LoadShader(0, TextFormat("resources/shaders/glsl%i/grayscale.fs", GLSL_VERSION));
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model.materials[0].shader = shader; // Set shader effect to 3d model
model.materials[0].maps[MATERIAL_MAP_DIFFUSE].texture = texture; // Bind texture to model
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Vector3 position = { 0.0f, 0.0f, 0.0f }; // Set model position
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SetCameraMode(camera, CAMERA_FREE); // Set an orbital camera mode
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SetTargetFPS(60); // Set our game to run at 60 frames-per-second
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//--------------------------------------------------------------------------------------
// Main game loop
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while (!WindowShouldClose()) // Detect window close button or ESC key
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{
// Update
//----------------------------------------------------------------------------------
UpdateCamera(&camera); // Update camera
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//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
BeginMode3D(camera);
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DrawModel(model, position, 0.2f, WHITE); // Draw 3d model with texture
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DrawGrid(10, 1.0f); // Draw a grid
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EndMode3D();
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DrawText("(c) Watermill 3D model by Alberto Cano", screenWidth - 210, screenHeight - 20, 10, GRAY);
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DrawFPS(10, 10);
EndDrawing();
//----------------------------------------------------------------------------------
}
// De-Initialization
//--------------------------------------------------------------------------------------
UnloadShader(shader); // Unload shader
UnloadTexture(texture); // Unload texture
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UnloadModel(model); // Unload model
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CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}