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example: disable vsync of sw window for stability.

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SDL + software engine doesn't need the vsync?

Observed the rendering performance is noticeably unstable on Intel Arc chipsets
with certain window sizes (ie 800x800) when VSync is enabled on software-rendered windows.

This might be a workaround, or it could be an issue with the driver or SDL.

Either way, the SDL + software engine doesn't need VSync.
This commit is contained in:
Hermet Park 2025-05-05 15:49:13 +09:00
parent 2990e72b23
commit 2d695c4d46
1 changed files with 10 additions and 0 deletions
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10
examples/Example.h
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@ -283,6 +283,8 @@ struct Window
struct SwWindow : Window
{
SDL_Renderer* renderer = nullptr;
SwWindow(Example* example, uint32_t width, uint32_t height, uint32_t threadsCnt) : Window(example, width, height, threadsCnt)
{
if (!initialized) return;
@ -296,9 +298,17 @@ struct SwWindow : Window
return;
}
//VSync has been disabled. Remove this line if you need VSync enabled.
renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_PRESENTVSYNC);
resize();
}
~SwWindow()
{
if (renderer) SDL_DestroyRenderer(renderer);
}
void resize() override
{
auto surface = SDL_GetWindowSurface(window);