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Added support for SDL_RENDERER_PRESENTVSYNC to the software renderer

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This fixes https://github.com/libsdl-org/SDL/issues/4612
This commit is contained in:
Sam Lantinga 2021-08-10 12:02:17 -07:00
parent ea9bece5ed
commit fcfd19db86
3 changed files with 50 additions and 36 deletions
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15
src/render/software/SDL_render_sw.c
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@ -859,9 +859,22 @@ SW_CreateRendererForSurface(SDL_Surface * surface)
static SDL_Renderer *
SW_CreateRenderer(SDL_Window * window, Uint32 flags)
{
const char *hint;
SDL_Surface *surface;
/* Set the vsync hint based on our flags, if it's not already set */
hint = SDL_GetHint(SDL_HINT_RENDER_VSYNC);
if (!hint || !*hint) {
SDL_SetHint(SDL_HINT_RENDER_VSYNC, (flags & SDL_RENDERER_PRESENTVSYNC) ? "1" : "0");
}
surface = SDL_GetWindowSurface(window);
/* Reset the vsync hint if we set it above */
if (!hint || !*hint) {
SDL_SetHint(SDL_HINT_RENDER_VSYNC, "");
}
if (!surface) {
return NULL;
}
@ -872,7 +885,7 @@ SDL_RenderDriver SW_RenderDriver = {
SW_CreateRenderer,
{
"software",
SDL_RENDERER_SOFTWARE | SDL_RENDERER_TARGETTEXTURE,
SDL_RENDERER_SOFTWARE | SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_TARGETTEXTURE,
8,
{
SDL_PIXELFORMAT_ARGB8888,