aaara si, makes, cmakes i gitignores com toca

source/demo2_pixels_noise.cpp

@@ -0,0 +1,64 @@
+#include <SDL3/SDL.h>
+#include <cstdlib>
+#include <ctime>
+
+struct ARGB
+{
+    Uint8 b, g, r, a;
+
+    // Constructor
+    ARGB(Uint8 blue = 0, Uint8 green = 0, Uint8 red = 0, Uint8 alpha = 255)
+        : b(blue), g(green), r(red), a(alpha) {}
+};
+
+int main(int argc, char *argv[])
+{
+    constexpr int WIDTH = 320;
+    constexpr int HEIGHT = 240;
+    constexpr int ZOOM = 2;
+
+    srand(static_cast<unsigned>(time(nullptr)));
+
+    SDL_Init(SDL_INIT_VIDEO | SDL_INIT_EVENTS);
+
+    SDL_Window *window = SDL_CreateWindow("pixels_white_noise", WIDTH * ZOOM, HEIGHT * ZOOM, SDL_WINDOW_OPENGL);
+    SDL_Renderer *renderer = SDL_CreateRenderer(window, nullptr);
+    SDL_SetRenderLogicalPresentation(renderer, WIDTH, HEIGHT, SDL_LOGICAL_PRESENTATION_INTEGER_SCALE);
+    SDL_Texture *texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, WIDTH, HEIGHT);
+
+    ARGB *pixels;
+    int pitch;
+
+    SDL_Event sdlEvent;
+    bool exit = false;
+    while (!exit)
+    {
+        while (SDL_PollEvent(&sdlEvent))
+        {
+            if (sdlEvent.type == SDL_EVENT_QUIT)
+            {
+                exit = true;
+                break;
+            }
+        }
+
+        SDL_LockTexture(texture, nullptr, (void **)&pixels, &pitch);
+
+        for (int i = 0; i < 76800; ++i)
+        {
+            pixels[i] = ARGB(rand() % 256, rand() % 256, rand() % 256, 255);
+        }
+
+        SDL_UnlockTexture(texture);
+        SDL_RenderTexture(renderer, texture, nullptr, nullptr);
+        SDL_RenderPresent(renderer);
+    }
+
+    SDL_DestroyTexture(texture);
+    SDL_DestroyRenderer(renderer);
+    SDL_DestroyWindow(window);
+
+    SDL_Quit();
+
+    return 0;
+}