diff options
Diffstat (limited to 'examples/lighting_blinn_phong.c')
| -rw-r--r-- | examples/lighting_blinn_phong.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/examples/lighting_blinn_phong.c b/examples/lighting_blinn_phong.c new file mode 100644 index 00000000..beb2c4da --- /dev/null +++ b/examples/lighting_blinn_phong.c @@ -0,0 +1,180 @@ +/******************************************************************************************* +* +* raylib - Phong lighting shader example +* +* This example has been created using raylib v1.3.0 (www.raylib.com) +* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details) +* +* Copyright (c) 2015 Ramon Santamaria (Ray San - raysan@raysanweb.com) +* +********************************************************************************************/ + +#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 [lighting] example - basic blinn-phong lighting"); + SetTargetFPS(60); + + // Camera initialization + Camera camera = {{ 10.0, 8.0, 10.0 }, { 0.0, 0.0, 0.0 }, { 0.0, 1.0, 0.0 }}; + + // Model initialization + Vector3 position = { 0.0, 0.0, 0.0 }; + 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 directionalLight; + Material blinnMaterial; + + // Light initialization + SetLightPosition(&directionalLight, (Vector3){5.0f, 1.0f, 1.0f}); + SetLightRotation(&directionalLight, (Vector3){5.0f, 1.0f, 1.0f}); + SetLightIntensity(&directionalLight, 1); + SetLightAmbientColor(&directionalLight, (Vector3){0.6f, 0.3f, 0}); + SetLightDiffuseColor(&directionalLight, (Vector3){1, 1, 1}); + SetLightSpecularColor(&directionalLight, (Vector3){1, 1, 1}); + SetLightSpecIntensity(&directionalLight, 1); + + // Material initialization + SetMaterialAmbientColor(&blinnMaterial, (Vector3){0.2f, 0.2f, 0.2f}); + SetMaterialDiffuseColor(&blinnMaterial, (Vector3){1.0f, 1.0f, 1.0f}); + SetMaterialSpecularColor(&blinnMaterial, (Vector3){1.0f, 1.0f, 1.0f}); + SetMaterialGlossiness(&blinnMaterial, 50); + + // 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 + float cameraPosition[3] = { camera.position.x, camera.position.y, camera.position.z }; // Camera position vector in float array + //-------------------------------------------------------------------------------------- + + // Main game loop + while (!WindowShouldClose()) // Detect window close button or ESC key + { + // Update + //---------------------------------------------------------------------------------- + + // Update camera position and its float array for shader + UpdateCamera(&camera); + cameraPosition[0] = camera.position.x; + cameraPosition[1] = camera.position.y; + cameraPosition[2] = camera.position.z; + + // Glossiness input control + if(IsKeyDown(KEY_UP)) + { + blinnMaterial.glossiness[0] += SHININESS_SPEED; + } + else if(IsKeyDown(KEY_DOWN)) + { + blinnMaterial.glossiness[0] -= SHININESS_SPEED; + + if(blinnMaterial.glossiness[0] < 0) blinnMaterial.glossiness[0] = 0; + } + + // Light X movement + if(IsKeyDown(KEY_D)) + { + directionalLight.position[0] += LIGHT_SPEED; + } + else if(IsKeyDown(KEY_A)) + { + directionalLight.position[0] -= LIGHT_SPEED; + } + + // Light Y movement + if(IsKeyDown(KEY_LEFT_SHIFT)) + { + directionalLight.position[1] += LIGHT_SPEED; + } + else if(IsKeyDown(KEY_LEFT_CONTROL)) + { + directionalLight.position[1] -= LIGHT_SPEED; + } + + // Light Z movement + if(IsKeyDown(KEY_S)) + { + directionalLight.position[2] += LIGHT_SPEED; + } + else if(IsKeyDown(KEY_W)) + { + directionalLight.position[2] -= LIGHT_SPEED; + } + + // Send light values to shader + SetShaderValue(shader, lIntensityLoc, directionalLight.intensity, 1); + SetShaderValue(shader, lAmbientLoc, directionalLight.ambientColor, 3); + SetShaderValue(shader, lDiffuseLoc, directionalLight.diffuseColor, 3); + SetShaderValue(shader, lSpecularLoc, directionalLight.specularColor, 3); + SetShaderValue(shader, lSpecIntensityLoc, directionalLight.specularIntensity, 1); + + // Send material values to shader + SetShaderValue(shader, mAmbientLoc, blinnMaterial.ambientColor, 3); + SetShaderValue(shader, mSpecularLoc, blinnMaterial.specularColor, 3); + SetShaderValue(shader, mGlossLoc, blinnMaterial.glossiness, 1); + + // Send camera and light transform values to shader + SetShaderValue(shader, cameraLoc, cameraPosition, 3); + SetShaderValue(shader, lightLoc, directionalLight.position, 3); + //---------------------------------------------------------------------------------- + + // Draw + //---------------------------------------------------------------------------------- + BeginDrawing(); + + ClearBackground(RAYWHITE); + + Begin3dMode(camera); + + DrawModel(model, position, 0.1f, (Color){255 * blinnMaterial.diffuseColor[0], 255 * blinnMaterial.diffuseColor[1], 255 * blinnMaterial.diffuseColor[2], 255}); + + DrawSphere((Vector3){directionalLight.position[0], directionalLight.position[1], directionalLight.position[2]}, 1, YELLOW); + + End3dMode(); + + // Draw FPS + DrawFPS(10, 10); + + EndDrawing(); + //---------------------------------------------------------------------------------- + } + + // De-Initialization + //-------------------------------------------------------------------------------------- + // Unload all loaded data + UnloadShader(shader); + UnloadModel(model); + + CloseWindow(); // Close window and OpenGL context + //-------------------------------------------------------------------------------------- + + return 0; +}
\ No newline at end of file |