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Added support for simulated vsync in the renderer

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This kicks in if the platform doesn't support vsync directly, or if the present fails for some reason (e.g. minimized on some platforms)

Fixes https://github.com/libsdl-org/SDL/issues/5134
This commit is contained in:
Sam Lantinga
2022-09-15 01:00:12 -07:00
parent 339f7a2f6b
commit d744aafb05
15 changed files with 115 additions and 37 deletions
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7
src/render/SDL_sysrender.h
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@@ -188,7 +188,7 @@ struct SDL_Renderer
int (*SetRenderTarget) (SDL_Renderer * renderer, SDL_Texture * texture);
int (*RenderReadPixels) (SDL_Renderer * renderer, const SDL_Rect * rect,
Uint32 format, void * pixels, int pitch);
void (*RenderPresent) (SDL_Renderer * renderer);
int (*RenderPresent) (SDL_Renderer * renderer);
void (*DestroyTexture) (SDL_Renderer * renderer, SDL_Texture * texture);
void (*DestroyRenderer) (SDL_Renderer * renderer);
@@ -208,6 +208,11 @@ struct SDL_Renderer
SDL_Window *window;
SDL_bool hidden;
/* Whether we should simulate vsync */
SDL_bool wanted_vsync;
SDL_bool simulate_vsync;
Uint32 last_present;
/* The logical resolution for rendering */
int logical_w;
int logical_h;