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Added SDL_SetSurfaceScaleMode() and SDL_GetSurfaceScaleMode() to control scale mode using SDL_BlitSurfaceScaled()

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Sylvain
2023-12-14 21:26:18 +01:00
committed by Sam Lantinga
parent 4d5949dcf6
commit 84a0d5f623
7 changed files with 86 additions and 12 deletions
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36
src/video/SDL_surface.c
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@@ -776,7 +776,7 @@ int SDL_BlitSurface(SDL_Surface *src, const SDL_Rect *srcrect,
int SDL_BlitSurfaceScaled(SDL_Surface *src, const SDL_Rect *srcrect,
SDL_Surface *dst, SDL_Rect *dstrect)
{
return SDL_PrivateBlitSurfaceScaled(src, srcrect, dst, dstrect, SDL_SCALEMODE_NEAREST);
return SDL_PrivateBlitSurfaceScaled(src, srcrect, dst, dstrect, src->scaleMode);
}
int SDL_PrivateBlitSurfaceScaled(SDL_Surface *src, const SDL_Rect *srcrect,
@@ -944,7 +944,7 @@ int SDL_PrivateBlitSurfaceScaled(SDL_Surface *src, const SDL_Rect *srcrect,
int SDL_BlitSurfaceUncheckedScaled(SDL_Surface *src, const SDL_Rect *srcrect,
SDL_Surface *dst, const SDL_Rect *dstrect)
{
return SDL_PrivateBlitSurfaceUncheckedScaled(src, srcrect, dst, dstrect, SDL_SCALEMODE_NEAREST);
return SDL_PrivateBlitSurfaceUncheckedScaled(src, srcrect, dst, dstrect, src->scaleMode);
}
int SDL_PrivateBlitSurfaceUncheckedScaled(SDL_Surface *src, const SDL_Rect *srcrect,
@@ -1051,6 +1051,38 @@ int SDL_PrivateBlitSurfaceUncheckedScaled(SDL_Surface *src, const SDL_Rect *srcr
}
}
int SDL_SetSurfaceScaleMode(SDL_Surface *surface, SDL_ScaleMode scaleMode)
{
if (!surface) {
return SDL_InvalidParamError("surface");
}
if (scaleMode != SDL_SCALEMODE_NEAREST && scaleMode != SDL_SCALEMODE_LINEAR && scaleMode != SDL_SCALEMODE_BEST) {
return SDL_InvalidParamError("scaleMode");
}
if (scaleMode == SDL_SCALEMODE_NEAREST) {
surface->scaleMode = SDL_SCALEMODE_NEAREST;
} else {
surface->scaleMode = SDL_SCALEMODE_LINEAR;
}
return 0;
}
int SDL_GetSurfaceScaleMode(SDL_Surface *surface, SDL_ScaleMode *scaleMode)
{
if (!surface) {
return SDL_InvalidParamError("surface");
}
if (scaleMode) {
*scaleMode = surface->scaleMode;
}
return 0;
}
/*
* Lock a surface to directly access the pixels
*/