feat: backporting existing raylib-cs examples and new official raylib examples to WASM, adopting raylib's original code style

Examples/Shaders/TextureTiling.cs

@@ -0,0 +1,143 @@
+/*******************************************************************************************
+*
+*   raylib [shaders] example - texture tiling
+*
+*   Example complexity rating: [★★☆☆] 2/4
+*
+*   Example demonstrates how to tile a texture on a 3D model using raylib
+*
+*   Example originally created with raylib 4.5, last time updated with raylib 4.5
+*
+*   Example contributed by Luis Almeida (@luis605) and reviewed by Ramon Santamaria (@raysan5)
+*
+*   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) 2023-2025 Luis Almeida (@luis605)
+*
+********************************************************************************************/
+
+using System.Numerics;
+using static Raylib_cs.Raylib;
+
+namespace Examples.Shaders;
+
+public class TextureTiling : IExample
+{
+    private const int screenWidth = 800;
+    private const int screenHeight = 450;
+
+#if BROWSER
+    const int GlslVersion = 100;    // WebGL1 needs GLSL ES 100
+#else
+    private const int GlslVersion = 330;
+#endif
+
+    public string Name => "Shaders / Texture Tiling";
+
+    public string Title => "raylib [shaders] example - texture tiling";
+
+    public bool CursorDisabled => true;
+
+    private Camera3D camera;
+    private Model model;
+    private Texture2D texture;
+    private Shader shader;
+
+    public unsafe void Init()
+    {
+        // Define the camera to look into our 3d world
+        camera = new();
+        camera.Position = new Vector3(4.0f, 4.0f, 4.0f);    // Camera position
+        camera.Target = new Vector3(0.0f, 0.5f, 0.0f);      // Camera looking at point
+        camera.Up = new Vector3(0.0f, 1.0f, 0.0f);          // Camera up vector (rotation towards target)
+        camera.FovY = 45.0f;                                // Camera field-of-view Y
+        camera.Projection = CameraProjection.Perspective;   // Camera projection type
+
+        // Load a cube model
+        var cube = GenMeshCube(1.0f, 1.0f, 1.0f);
+        model = LoadModelFromMesh(cube);
+
+        // Load a texture and assign to cube model
+        texture = LoadTexture("resources/cubicmap_atlas.png");
+        model.Materials[0].Maps[(int)MaterialMapIndex.Diffuse].Texture = texture;
+
+        // Set the texture tiling using a shader
+        var tiling = new[] { 3.0f, 3.0f };
+        shader = LoadShader(null, $"resources/shaders/glsl{GlslVersion}/tiling.fs");
+        SetTextureWrap(texture, TextureWrap.Repeat);
+        Raylib.SetShaderValue(shader, GetShaderLocation(shader, "tiling"), tiling, ShaderUniformDataType.Vec2);
+        model.Materials[0].Shader = shader;
+    }
+
+    public void Update()
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        UpdateCamera(ref camera, CameraMode.Free);
+
+        if (IsKeyPressed(KeyboardKey.Z))
+        {
+            camera.Target = new Vector3(0.0f, 0.5f, 0.0f);
+        }
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+        ClearBackground(Color.RayWhite);
+
+        BeginMode3D(camera);
+
+        BeginShaderMode(shader);
+        DrawModel(model, new Vector3(0.0f, 0.0f, 0.0f), 2.0f, Color.White);
+        EndShaderMode();
+
+        DrawGrid(10, 1.0f);
+
+        EndMode3D();
+
+        DrawText("Use mouse to rotate the camera", 10, 10, 20, Color.DarkGray);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    public void Unload()
+    {
+        UnloadModel(model);         // Unload model
+        UnloadShader(shader);       // Unload shader
+        UnloadTexture(texture);     // Unload texture
+    }
+
+    public static int Main()
+    {
+        // Initialization
+        //--------------------------------------------------------------------------------------
+        InitWindow(screenWidth, screenHeight, "raylib [shaders] example - texture tiling");
+
+        DisableCursor();                    // Limit cursor to relative movement inside the window
+
+        SetTargetFPS(60);                   // Set our game to run at 60 frames-per-second
+        //--------------------------------------------------------------------------------------
+
+        var game = new TextureTiling();
+        game.Init();
+
+        // Main game loop
+        while (!WindowShouldClose())        // Detect window close button or ESC key
+        {
+            game.Update();
+        }
+
+        game.Unload();
+
+        // De-Initialization
+        //--------------------------------------------------------------------------------------
+        CloseWindow();              // Close window and OpenGL context
+        //--------------------------------------------------------------------------------------
+
+        return 0;
+    }
+}