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

Examples/Shaders/ShapesTextures.cs

@@ -0,0 +1,121 @@
+/*******************************************************************************************
+*
+*   raylib [shaders] example - Apply a shader to some shape or texture
+*
+*   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 1.7 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2015 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+using System.Numerics;
+using static Raylib_cs.Raylib;
+
+namespace Examples.Shaders;
+
+public class ShapesTextures
+{
+    public static int Main()
+    {
+        // Initialization
+        //--------------------------------------------------------------------------------------
+        const int screenWidth = 800;
+        const int screenHeight = 450;
+
+        InitWindow(screenWidth, screenHeight, "raylib [shaders] example - shapes and texture shaders");
+
+        Texture2D fudesumi = LoadTexture("resources/fudesumi.png");
+
+        // NOTE: Using GLSL 330 shader version, on OpenGL ES 2.0 use GLSL 100 shader version
+        Shader shader = LoadShader(
+            "resources/shaders/glsl330/base.vs",
+            "resources/shaders/glsl330/grayscale.fs"
+        );
+
+        SetTargetFPS(60);
+        //--------------------------------------------------------------------------------------
+
+        // Main game loop
+        while (!WindowShouldClose())
+        {
+            // Update
+            //----------------------------------------------------------------------------------
+            // TODO: Update your variables here
+            //----------------------------------------------------------------------------------
+
+            // Draw
+            //----------------------------------------------------------------------------------
+            BeginDrawing();
+            ClearBackground(Color.RAYWHITE);
+
+            // Start drawing with default shader
+            DrawText("USING DEFAULT SHADER", 20, 40, 10, Color.RED);
+
+            DrawCircle(80, 120, 35, Color.DARKBLUE);
+            DrawCircleGradient(80, 220, 60, Color.GREEN, Color.SKYBLUE);
+            DrawCircleLines(80, 340, 80, Color.DARKBLUE);
+
+
+            // Activate our custom shader to be applied on next shapes/textures drawings
+            BeginShaderMode(shader);
+
+            DrawText("USING CUSTOM SHADER", 190, 40, 10, Color.RED);
+
+            DrawRectangle(250 - 60, 90, 120, 60, Color.RED);
+            DrawRectangleGradientH(250 - 90, 170, 180, 130, Color.MAROON, Color.GOLD);
+            DrawRectangleLines(250 - 40, 320, 80, 60, Color.ORANGE);
+
+            // Activate our default shader for next drawings
+            EndShaderMode();
+
+            DrawText("USING DEFAULT SHADER", 370, 40, 10, Color.RED);
+
+            DrawTriangle(
+                new Vector2(430, 80),
+                new Vector2(430 - 60, 150),
+                new Vector2(430 + 60, 150), Color.VIOLET
+            );
+
+            DrawTriangleLines(
+                new Vector2(430, 160),
+                new Vector2(430 - 20, 230),
+                new Vector2(430 + 20, 230), Color.DARKBLUE
+            );
+
+            DrawPoly(new Vector2(430, 320), 6, 80, 0, Color.BROWN);
+
+            // Activate our custom shader to be applied on next shapes/textures drawings
+            BeginShaderMode(shader);
+
+            // Using custom shader
+            DrawTexture(fudesumi, 500, -30, Color.WHITE);
+
+            // Activate our default shader for next drawings
+            EndShaderMode();
+
+            DrawText("(c) Fudesumi sprite by Eiden Marsal", 380, screenHeight - 20, 10, Color.GRAY);
+
+            EndDrawing();
+            //----------------------------------------------------------------------------------
+        }
+
+        // De-Initialization
+        //--------------------------------------------------------------------------------------
+        UnloadShader(shader);
+        UnloadTexture(fudesumi);
+
+        CloseWindow();
+        //--------------------------------------------------------------------------------------
+
+        return 0;
+    }
+
+}