Rename lighting_blinn_phong.c to shaders_basic_lighting.c

examples/shaders_basic_lighting.c

@@ -0,0 +1,153 @@
+/*******************************************************************************************
+*
+*   raylib [shaders] example - Blinn-Phong lighting
+*
+*   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"
+
+#define SHININESS_SPEED 1.0f
+#define LIGHT_SPEED 0.25f
+
+int main()
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+    
+    SetConfigFlags(FLAG_MSAA_4X_HINT);
+    InitWindow(screenWidth, screenHeight, "raylib [shaders] example - blinn-phong lighting");
+    SetTargetFPS(60);
+    
+    // Camera initialization
+    Camera camera = {{ 8.0f, 8.0f, 8.0f }, { 0.0f, 3.0f, 0.0f }, { 0.0f, 1.0f, 0.0f }};
+    
+    // Model initialization
+    Vector3 position = { 0.0f, 0.0f, 0.0f };
+    Model model = LoadModel("resources/model/dwarf.obj");
+    Shader shader = LoadShader("resources/shaders/phong.vs", "resources/shaders/phong.fs");
+    SetModelShader(&model, shader);
+    
+    // Shader locations initialization
+    int lIntensityLoc = GetShaderLocation(shader, "light_intensity");
+    int lAmbientLoc = GetShaderLocation(shader, "light_ambientColor");
+    int lDiffuseLoc = GetShaderLocation(shader, "light_diffuseColor");
+    int lSpecularLoc = GetShaderLocation(shader, "light_specularColor");
+    int lSpecIntensityLoc = GetShaderLocation(shader, "light_specIntensity");
+    
+    int mAmbientLoc = GetShaderLocation(shader, "mat_ambientColor");
+    int mSpecularLoc = GetShaderLocation(shader, "mat_specularColor");
+    int mGlossLoc = GetShaderLocation(shader, "mat_glossiness");
+    
+    // Camera and light vectors shader locations
+    int cameraLoc = GetShaderLocation(shader, "cameraPos");
+    int lightLoc = GetShaderLocation(shader, "lightPos");
+    
+    // Light and material definitions
+    Light light;
+    Material matBlinn;
+    
+    // Light initialization
+    light.position = (Vector3){ 4.0f, 2.0f, 0.0f };
+    light.direction = (Vector3){ 5.0f, 1.0f, 1.0f };
+    light.intensity = 1.0f;
+    light.diffuse = WHITE;
+    light.ambient = (Color){ 150, 75, 0, 255 };
+    light.specular = WHITE;
+    light.specIntensity = 1.0f;
+    
+    // Material initialization
+    matBlinn.diffuse = WHITE;
+    matBlinn.ambient = (Color){ 50, 50, 50, 255 };
+    matBlinn.specular = WHITE;
+    matBlinn.glossiness = 50.0f;
+    
+    // Setup camera
+    SetCameraMode(CAMERA_FREE);             // Set camera mode
+    SetCameraPosition(camera.position);     // Set internal camera position to match our camera position
+    SetCameraTarget(camera.target);         // Set internal camera target to match our camera target
+    //--------------------------------------------------------------------------------------
+    
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        
+        // Update camera position
+        UpdateCamera(&camera);
+        
+        // Glossiness input control
+        if(IsKeyDown(KEY_UP)) matBlinn.glossiness += SHININESS_SPEED;
+        else if(IsKeyDown(KEY_DOWN))
+        {
+            matBlinn.glossiness -= SHININESS_SPEED;
+            if( matBlinn.glossiness < 0) matBlinn.glossiness = 0.0f;
+        }
+        
+        // Light X movement
+        if (IsKeyDown(KEY_D)) light.position.x += LIGHT_SPEED;
+        else if(IsKeyDown(KEY_A)) light.position.x -= LIGHT_SPEED;
+        
+        // Light Y movement
+        if (IsKeyDown(KEY_LEFT_SHIFT)) light.position.y += LIGHT_SPEED;
+        else if (IsKeyDown(KEY_LEFT_CONTROL)) light.position.y -= LIGHT_SPEED;
+
+        // Light Z movement
+        if (IsKeyDown(KEY_S)) light.position.z += LIGHT_SPEED;
+        else if (IsKeyDown(KEY_W)) light.position.z -= LIGHT_SPEED;
+        
+        // Send light values to shader
+        SetShaderValue(shader, lIntensityLoc, &light.intensity, 1);
+        SetShaderValue(shader, lAmbientLoc, ColorToFloat(light.ambient), 3);
+        SetShaderValue(shader, lDiffuseLoc, ColorToFloat(light.diffuse), 3);
+        SetShaderValue(shader, lSpecularLoc, ColorToFloat(light.specular), 3);
+        SetShaderValue(shader, lSpecIntensityLoc, &light.specIntensity, 1);
+        
+        // Send material values to shader
+        SetShaderValue(shader, mAmbientLoc, ColorToFloat(matBlinn.ambient), 3);
+        SetShaderValue(shader, mSpecularLoc, ColorToFloat(matBlinn.specular), 3);
+        SetShaderValue(shader, mGlossLoc, &matBlinn.glossiness, 1);
+        
+        // Send camera and light transform values to shader
+        SetShaderValue(shader, cameraLoc, VectorToFloat(camera.position), 3);
+        SetShaderValue(shader, lightLoc, VectorToFloat(light.position), 3);
+        //----------------------------------------------------------------------------------
+        
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+        
+            ClearBackground(RAYWHITE);
+            
+            Begin3dMode(camera);
+                
+                DrawModel(model, position, 4.0f, matBlinn.diffuse);
+                DrawSphere(light.position, 0.5f, GOLD);
+                
+                DrawGrid(20, 1.0f);
+                
+            End3dMode();
+            
+            DrawFPS(10, 10);                // Draw FPS
+            
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadShader(shader);
+    UnloadModel(model);
+
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+    
+    return 0;
+}