matthew/The-Powder-Toy
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Implement vsync fps limit outside emscripten

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Tamás Bálint Misius 2023-08-18 08:08:33 +02:00
parent bfe7d765c4
commit dca5e25b3b
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GPG Key ID: 5B472A12F6ECA9F2
1 changed files with 14 additions and 7 deletions
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21
src/PowderToySDL.cpp
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@ -16,6 +16,7 @@ int scale = 1;
bool fullscreen = false;
bool altFullscreen = false;
bool forceIntegerScaling = true;
bool vsyncHint = false;
bool resizable = false;
bool momentumScroll = true;
bool showAvatars = true;
@ -143,20 +144,22 @@ void SDLClose()
SDL_Quit();
}
void SDLSetScreen(int scale_, bool resizable_, bool fullscreen_, bool altFullscreen_, bool forceIntegerScaling_)
void SDLSetScreen(int scale_, bool resizable_, bool fullscreen_, bool altFullscreen_, bool forceIntegerScaling_, bool vsyncHint_)
{
// bool changingScale = scale != scale_;
bool changingFullscreen = fullscreen_ != fullscreen || (altFullscreen_ != altFullscreen && fullscreen);
bool changingResizable = resizable != resizable_;
bool changingVsync = vsyncHint != vsyncHint_;
scale = scale_;
fullscreen = fullscreen_;
altFullscreen = altFullscreen_;
resizable = resizable_;
forceIntegerScaling = forceIntegerScaling_;
vsyncHint = vsyncHint_;
// Recreate the window when toggling fullscreen, due to occasional issues
// Also recreate it when enabling resizable windows, to fix bugs on windows,
// see https://github.com/jacob1/The-Powder-Toy/issues/24
if (changingFullscreen || altFullscreen || (changingResizable && resizable && !fullscreen))
if (changingFullscreen || altFullscreen || (changingResizable && resizable && !fullscreen) || changingVsync)
{
RecreateWindow();
return;
@ -178,10 +181,13 @@ void SDLSetScreen(int scale_, bool resizable_, bool fullscreen_, bool altFullscr
bool RecreateWindow()
{
unsigned int flags = 0;
unsigned int rendererFlags = 0;
if (fullscreen)
flags = altFullscreen ? SDL_WINDOW_FULLSCREEN : SDL_WINDOW_FULLSCREEN_DESKTOP;
if (resizable && !fullscreen)
flags |= SDL_WINDOW_RESIZABLE;
if (vsyncHint)
rendererFlags |= SDL_RENDERER_PRESENTVSYNC;
if (sdl_texture)
SDL_DestroyTexture(sdl_texture);
@ -199,7 +205,7 @@ bool RecreateWindow()
{
return false;
}
sdl_renderer = SDL_CreateRenderer(sdl_window, -1, 0);
sdl_renderer = SDL_CreateRenderer(sdl_window, -1, rendererFlags);
if (!sdl_renderer)
{
fprintf(stderr, "SDL_CreateRenderer failed; available renderers:\n");
@ -376,24 +382,26 @@ void EngineProcess()
engine.Tick();
auto fpsLimit = ui::Engine::Ref().GetFpsLimit();
int drawcap = ui::Engine::Ref().GetDrawingFrequencyLimit();
if (!drawcap || drawingTimer > 1e9f / drawcap)
{
engine.Draw();
drawingTimer = 0;
auto wantVsync = bool(std::get_if<FpsLimitVsync>(&fpsLimit));
if (scale != engine.Scale ||
fullscreen != engine.Fullscreen ||
altFullscreen != engine.GetAltFullscreen() ||
forceIntegerScaling != engine.GetForceIntegerScaling() ||
resizable != engine.GetResizable())
resizable != engine.GetResizable() ||
vsyncHint != wantVsync)
{
SDLSetScreen(engine.Scale, engine.GetResizable(), engine.Fullscreen, engine.GetAltFullscreen(), engine.GetForceIntegerScaling());
SDLSetScreen(engine.Scale, engine.GetResizable(), engine.Fullscreen, engine.GetAltFullscreen(), engine.GetForceIntegerScaling(), wantVsync);
}
blit(engine.g->Data());
}
auto fpsLimit = ui::Engine::Ref().GetFpsLimit();
auto now = uint64_t(SDL_GetTicks()) * UINT64_C(1'000'000);
oldFrameStart = frameStart;
frameStart = now;
@ -405,5 +413,4 @@ void EngineProcess()
frameStart = std::max(frameStart, frameStartTimeBlock * timeBlockDuration);
SDL_Delay((frameStart - now) / UINT64_C(1'000'000));
}
// TODO: else if (auto *fpsLimitExplicit = std::get_if<FpsLimitVsync>(&fpsLimit))
}