REXM: ADDED: example: core_render_texture

examples/core/core_render_texture.c

@@ -0,0 +1,99 @@
+/*******************************************************************************************
+*
+*   raylib [core] example - render texture
+*
+*   Example complexity rating: [★☆☆☆] 1/4
+*
+*   Example originally created with raylib 5.6-dev, last time updated with raylib 5.6-dev
+*
+*   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) 2025 @raysan5 (@ Santamaria")
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+//------------------------------------------------------------------------------------
+// Program main entry point
+//------------------------------------------------------------------------------------
+int main(void)
+{
+    // Initialization
+    //---------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [core] example - render texture");
+    
+    // Define a render texture to render
+    int renderTextureWidth = 300;
+    int renderTextureHeight = 300;
+    RenderTexture2D target = LoadRenderTexture(renderTextureWidth, renderTextureHeight);
+
+    Vector2 ballPosition = { renderTextureWidth/2.0f, renderTextureHeight/2.0f };
+    Vector2 ballSpeed = { 5.0f, 4.0f };
+    int ballRadius = 20;
+
+    float rotation = 0.0f;
+
+    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
+        //-----------------------------------------------------
+        // Ball movement logic
+        ballPosition.x += ballSpeed.x;
+        ballPosition.y += ballSpeed.y;
+
+        // Check walls collision for bouncing
+        if ((ballPosition.x >= (renderTextureWidth - ballRadius)) || (ballPosition.x <= ballRadius)) ballSpeed.x *= -1.0f;
+        if ((ballPosition.y >= (renderTextureHeight - ballRadius)) || (ballPosition.y <= ballRadius)) ballSpeed.y *= -1.0f;
+
+        // Render texture rotation
+        rotation += 0.5f;
+        //-----------------------------------------------------
+
+        // Draw
+        //-----------------------------------------------------
+        // Draw our scene to the render texture
+        BeginTextureMode(target);
+        
+            ClearBackground(SKYBLUE);
+            
+            DrawCircleV(ballPosition, (float)ballRadius, MAROON);
+        
+        EndTextureMode();
+        
+        // Draw render texture to main framebuffer
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            // Draw our render texture with rotation applied
+            // NOTE: We set the origin of the texture to the center of the render texture
+            DrawTexturePro(target.texture, 
+                (Rectangle){ 0, 0, target.texture.width, -target.texture.height }, 
+                (Rectangle){ screenWidth/2, screenHeight/2, target.texture.width, -target.texture.height }, 
+                (Vector2){ target.texture.width/2, target.texture.height/2 }, rotation, WHITE);
+
+            DrawText("DRAWING BOUNCING BALL INSIDE RENDER TEXTURE!", 10, screenHeight - 40, 20, BLACK);
+            
+
+            DrawFPS(10, 10);
+
+        EndDrawing();
+        //-----------------------------------------------------
+    }
+
+    // De-Initialization
+    //---------------------------------------------------------
+    CloseWindow();        // Close window and OpenGL context
+    //----------------------------------------------------------
+
+    return 0;
+}