Update/merge examples back into main repo (#192)

Examples/Shaders/TextureWaves.cs

@@ -0,0 +1,115 @@
+/*******************************************************************************************
+*
+*   raylib [shaders] example - Texture Waves
+*
+*   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 2.5 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Example contributed by Anata (@anatagawa) and reviewed by Ramon Santamaria (@raysan5)
+*
+*   Copyright (c) 2019 Anata (@anatagawa) and Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+using static Raylib_cs.Raylib;
+
+namespace Examples.Shaders;
+
+public class TextureWaves
+{
+    const int GlslVersion = 330;
+
+    public static int Main()
+    {
+        // Initialization
+        //--------------------------------------------------------------------------------------
+        const int screenWidth = 800;
+        const int screenHeight = 450;
+
+        InitWindow(screenWidth, screenHeight, "raylib [shaders] example - texture waves");
+
+        // Load texture texture to apply shaders
+        Texture2D texture = LoadTexture("resources/space.png");
+
+        // Load shader and setup location points and values
+        Shader shader = LoadShader(null, $"resources/shaders/glsl{GlslVersion}/wave.fs");
+
+        int secondsLoc = GetShaderLocation(shader, "secondes");
+        int freqXLoc = GetShaderLocation(shader, "freqX");
+        int freqYLoc = GetShaderLocation(shader, "freqY");
+        int ampXLoc = GetShaderLocation(shader, "ampX");
+        int ampYLoc = GetShaderLocation(shader, "ampY");
+        int speedXLoc = GetShaderLocation(shader, "speedX");
+        int speedYLoc = GetShaderLocation(shader, "speedY");
+
+        // Shader uniform values that can be updated at any time
+        float freqX = 25.0f;
+        float freqY = 25.0f;
+        float ampX = 5.0f;
+        float ampY = 5.0f;
+        float speedX = 8.0f;
+        float speedY = 8.0f;
+
+        float[] screenSize = { (float)GetScreenWidth(), (float)GetScreenHeight() };
+        Raylib.SetShaderValue(
+            shader,
+            GetShaderLocation(shader, "size"),
+            screenSize,
+            ShaderUniformDataType.SHADER_UNIFORM_VEC2
+        );
+        Raylib.SetShaderValue(shader, freqXLoc, freqX, ShaderUniformDataType.SHADER_UNIFORM_FLOAT);
+        Raylib.SetShaderValue(shader, freqYLoc, freqY, ShaderUniformDataType.SHADER_UNIFORM_FLOAT);
+        Raylib.SetShaderValue(shader, ampXLoc, ampX, ShaderUniformDataType.SHADER_UNIFORM_FLOAT);
+        Raylib.SetShaderValue(shader, ampYLoc, ampY, ShaderUniformDataType.SHADER_UNIFORM_FLOAT);
+        Raylib.SetShaderValue(shader, speedXLoc, speedX, ShaderUniformDataType.SHADER_UNIFORM_FLOAT);
+        Raylib.SetShaderValue(shader, speedYLoc, speedY, ShaderUniformDataType.SHADER_UNIFORM_FLOAT);
+
+        float seconds = 0.0f;
+
+        SetTargetFPS(60);
+        //--------------------------------------------------------------------------------------
+
+        // Main game loop
+        while (!WindowShouldClose())
+        {
+            // Update
+            //----------------------------------------------------------------------------------
+            seconds += GetFrameTime();
+
+            Raylib.SetShaderValue(shader, secondsLoc, seconds, ShaderUniformDataType.SHADER_UNIFORM_FLOAT);
+            //----------------------------------------------------------------------------------
+
+            // Draw
+            //----------------------------------------------------------------------------------
+            BeginDrawing();
+            ClearBackground(Color.RAYWHITE);
+
+            BeginShaderMode(shader);
+
+            DrawTexture(texture, 0, 0, Color.WHITE);
+            DrawTexture(texture, texture.Width, 0, Color.WHITE);
+
+            EndShaderMode();
+
+            EndDrawing();
+            //----------------------------------------------------------------------------------
+        }
+
+        // De-Initialization
+        //--------------------------------------------------------------------------------------
+        UnloadShader(shader);
+        UnloadTexture(texture);
+
+        CloseWindow();
+        //--------------------------------------------------------------------------------------
+
+        return 0;
+    }
+}