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Add SDL_RenderSetVSync()

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Currently, if an application wants to toggle VSync, they'd have to tear
down the renderer and recreate it. This patch fixes that by letting
applications call SDL_RenderSetVSync().

This is the same as the patch in #3673, except it applies to all
renderers (including PSP, even thought it seems that the VSync flag is
disabled for that renderer). Furthermore, the renderer flags also change
as well, which #3673 didn't do. It is also an API instead of using hint
callbacks (which could be potentially dangerous).

Closes #3673.
This commit is contained in:
Misa
2021-03-07 15:20:45 -08:00
committed by Sam Lantinga
parent b2504b5da6
commit 4549769d7d
13 changed files with 168 additions and 0 deletions
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21
src/render/metal/SDL_render_metal.m
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@@ -1760,6 +1760,26 @@ METAL_GetMetalCommandEncoder(SDL_Renderer * renderer)
return (__bridge void*)data.mtlcmdencoder;
}}
static int
METAL_SetVSync(SDL_Renderer * renderer, const int vsync)
{
#if (defined(__MACOSX__) && defined(MAC_OS_X_VERSION_10_13)) || TARGET_OS_MACCATALYST
if (@available(macOS 10.13, *)) {
METAL_RenderData *data = (__bridge METAL_RenderData *) renderer->driverdata;
if (vsync) {
data.mtllayer.displaySyncEnabled = YES;
renderer->info.flags |= SDL_RENDERER_PRESENTVSYNC;
} else {
data.mtllayer.displaySyncEnabled = NO;
renderer->info.flags &= ~SDL_RENDERER_PRESENTVSYNC;
}
return 0;
}
#endif
return SDL_SetError("This Apple OS does not support displaySyncEnabled!");
}
static SDL_Renderer *
METAL_CreateRenderer(SDL_Window * window, Uint32 flags)
{ @autoreleasepool {
@@ -2010,6 +2030,7 @@ METAL_CreateRenderer(SDL_Window * window, Uint32 flags)
renderer->RenderPresent = METAL_RenderPresent;
renderer->DestroyTexture = METAL_DestroyTexture;
renderer->DestroyRenderer = METAL_DestroyRenderer;
renderer->SetVSync = METAL_SetVSync;
renderer->GetMetalLayer = METAL_GetMetalLayer;
renderer->GetMetalCommandEncoder = METAL_GetMetalCommandEncoder;