Pakz001.Raylib-Examples/Beginners_-_CreateandDrawinside_Texture.c

#include "raylib.h"

int main(void)
{
    // Initialization
    //--------------------------------------------------------------------------------------
    const int screenWidth = 800;
    const int screenHeight = 450;

    InitWindow(screenWidth, screenHeight, "raylib [core] example - generate random values");

    
     // Create a Image in memory
    RenderTexture2D target = LoadRenderTexture(screenWidth, screenHeight);
    
    // Clear our texture(image) before entering the game loop
    BeginTextureMode(target);    
    ClearBackground(BLUE);
    // Draw something on it.
    DrawCircle(50,50, 10, BLACK);

    EndTextureMode();               // This needs to be called after every different draw command used. Do not forget to use begintexture also..
 
 
    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
        //----------------------------------------------------------------------------------
        //----------------------------------------------------------------------------------
        // Draw
        //----------------------------------------------------------------------------------
        BeginDrawing();

            ClearBackground(RAYWHITE);
            
 
            // NOTE: Render texture must be y-flipped due to default OpenGL coordinates (left-bottom)
            DrawTextureRec(target.texture, (Rectangle){ 0, 0, target.texture.width, -target.texture.height }, (Vector2){ 0, 0 }, WHITE);

            DrawText("Example of how to draw into a image/texture.", 100, 180, 40, LIGHTGRAY);

        EndDrawing();
        //----------------------------------------------------------------------------------
    }

    // De-Initialization
    //--------------------------------------------------------------------------------------
    UnloadRenderTexture(target);    // Unload render texture
    //--------------------------------------------------------------------------------------
    CloseWindow();        // Close window and OpenGL context
    //--------------------------------------------------------------------------------------

    return 0;
}