fullscreen - SDL - (Hardware) Pixel Scaling -

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in sdl game, i'd retain fixed resolution of game area, both gameplay , performance reasons.

what wanted have small resolution (e.g. 320 * 240), , when resizing window / switching fullscreen mode letting sdl / graphics card scale each pixel.

however problems occur are:

  • the rendered picture gets 'blurry'
  • the actual drawing area smaller screen, there black regions on top, bottom left , right

what can solve this?

i have seen work in other games before

use stretch functions sdl stretch-blit surface, or upload surface opengl texture each frame , render appropriately-sized quad.


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