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Don't set SDL_SURFACE_LOCK_NEEDED until a surface is RLE encoded

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Reference https://github.com/libsdl-org/sdl2-compat/issues/476
This commit is contained in:
Sam Lantinga
2025-09-02 21:18:55 -07:00
parent fbbc29159a
commit 437d78499c
3 changed files with 7 additions and 5 deletions
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6
src/video/SDL_RLEaccel.c
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@@ -1434,6 +1434,7 @@ bool SDL_RLESurface(SDL_Surface *surface)
// The surface is now accelerated
surface->internal_flags |= SDL_INTERNAL_SURFACE_RLEACCEL;
SDL_UpdateSurfaceLockFlag(surface);
return true;
}
@@ -1565,11 +1566,12 @@ void SDL_UnRLESurface(SDL_Surface *surface, bool recode)
}
}
}
surface->map.info.flags &=
~(SDL_COPY_RLE_COLORKEY | SDL_COPY_RLE_ALPHAKEY);
surface->map.info.flags &= ~(SDL_COPY_RLE_COLORKEY | SDL_COPY_RLE_ALPHAKEY);
SDL_free(surface->map.data);
surface->map.data = NULL;
SDL_UpdateSurfaceLockFlag(surface);
}
}

2
src/video/SDL_blit.c
View File

@@ -191,7 +191,7 @@ bool SDL_CalculateBlit(SDL_Surface *surface, SDL_Surface *dst)
#ifdef SDL_HAVE_RLE
// Clean everything out to start
if (surface->flags & SDL_INTERNAL_SURFACE_RLEACCEL) {
if (surface->internal_flags & SDL_INTERNAL_SURFACE_RLEACCEL) {
SDL_UnRLESurface(surface, true);
}
#endif

4
src/video/SDL_surface.c
View File

@@ -49,7 +49,7 @@ bool SDL_SurfaceValid(SDL_Surface *surface)
void SDL_UpdateSurfaceLockFlag(SDL_Surface *surface)
{
if (SDL_SurfaceHasRLE(surface)) {
if (surface->internal_flags & SDL_INTERNAL_SURFACE_RLEACCEL) {
surface->flags |= SDL_SURFACE_LOCK_NEEDED;
} else {
surface->flags &= ~SDL_SURFACE_LOCK_NEEDED;
@@ -611,7 +611,6 @@ bool SDL_SetSurfaceRLE(SDL_Surface *surface, bool enabled)
if (surface->map.info.flags != flags) {
SDL_InvalidateMap(&surface->map);
}
SDL_UpdateSurfaceLockFlag(surface);
return true;
}
@@ -1760,6 +1759,7 @@ bool SDL_LockSurface(SDL_Surface *surface)
if (surface->internal_flags & SDL_INTERNAL_SURFACE_RLEACCEL) {
SDL_UnRLESurface(surface, true);
surface->internal_flags |= SDL_INTERNAL_SURFACE_RLEACCEL; // save accel'd state
SDL_UpdateSurfaceLockFlag(surface);
}
#endif
}