Manual integration of material-pbr into develop

examples/models/models_skybox.c

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+/*******************************************************************************************
+*
+*   raylib [models] example - Skybox loading and drawing
+*
+*   This example has been created using raylib 1.8 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2017 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+#include "raymath.h"
+
+int main()
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    int screenWidth = 800;
+    int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [models] example - skybox loading and drawing");
+
+    // Define the camera to look into our 3d world
+    Camera camera = {{ 1.0f, 1.0f, 1.0f }, { 0.0f, 0.0f, 0.0f }, { 0.0f, 1.0f, 0.0f }, 45.0f };
+
+    // Load skybox model and shader    
+    Mesh cube = GenMeshCube(1.0f, 1.0f, 1.0f);
+    Model skybox = LoadModelFromMesh(cube, false);
+    skybox.material.shader = LoadShader("resources/shaders/skybox.vs", "resources/shaders/skybox.fs");
+
+    Texture2D texHDR = LoadTexture("resources/pinetree.hdr");
+    skybox.material.maps[TEXMAP_CUBEMAP].tex = rlGenMapCubemap(texHDR, 512);
+    SetShaderValuei(skybox.material.shader, GetShaderLocation(skybox.material.shader, "environmentMap"), (int[1]){ TEXMAP_CUBEMAP }, 1);
+
+    // Get skybox shader locations
+    skybox.material.shader.locs[LOC_MATRIX_PROJECTION] = GetShaderLocation(skybox.material.shader, "projection");
+    skybox.material.shader.locs[LOC_MATRIX_VIEW] = GetShaderLocation(skybox.material.shader, "view");
+
+    // Then before rendering, configure the viewport to the actual screen dimensions
+    Matrix proj = MatrixPerspective(60.0, (double)GetScreenWidth()/(double)GetScreenHeight(), 0.01, 1000.0);
+    MatrixTranspose(&proj);
+    SetShaderValueMatrix(skybox.material.shader, skybox.material.shader.locs[LOC_MATRIX_PROJECTION], proj);
+
+    SetCameraMode(camera, CAMERA_ORBITAL);  // Set an orbital camera mode
+
+    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);              // Update camera
+        
+        Matrix view = MatrixLookAt(camera.position, camera.target, camera.up);
+        SetShaderValueMatrix(skybox.material.shader, skybox.material.shader.locs[LOC_MATRIX_VIEW], view);
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            Begin3dMode(camera);
+
+                DrawModel(skybox, VectorZero(), 1.0f, RED);
+                
+                DrawGrid(10, 1.0f);
+
+            End3dMode();
+
+            DrawFPS(10, 10);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadModel(skybox);        // Unload skybox model
+
+    CloseWindow();              // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}