Improving SDL Window Performance

To improve the performance of an SDL window, consider the following tips:

• Optimize your event loop: Only process events when necessary and avoid unnecessary computations or rendering in your loop.
• Use hardware acceleration: Utilize the SDL_WINDOW_OPENGL flag when creating your window to enable OpenGL, which can help leverage GPU acceleration.
• Manage your surfaces and textures efficiently: Minimize the use of SDL_UpdateWindowSurface() by using SDL textures and renderers for more efficient drawing and updates.

Here's how you could modify your existing window setup to use OpenGL for hardware acceleration:

1#include <SDL.h>
2
3int main(int argc, char** argv) {
4  SDL_Init(SDL_INIT_VIDEO);
5  SDL_Window* window =
6    SDL_CreateWindow("Optimized Window",
7      SDL_WINDOWPOS_UNDEFINED,
8      SDL_WINDOWPOS_UNDEFINED,
9      640, 480, SDL_WINDOW_OPENGL);  
10
11  // Your rendering and event handling code here
12
13  SDL_DestroyWindow(window);
14  SDL_Quit();
15  return 0;
16}

This example shows the inclusion of the SDL_WINDOW_OPENGL flag to enable OpenGL features for better rendering performance.