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Added clipping for render copy

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This commit is contained in:
Sam Lantinga
2008-12-23 01:28:06 +00:00
parent 9feaa729fd
commit a2258f8fb8
1 changed files with 17 additions and 12 deletions
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29
src/video/SDL_video.c
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@@ -2155,6 +2155,7 @@ SDL_RenderFill(const SDL_Rect * rect)
return -1;
}
window = SDL_GetWindowFromID(renderer->window);
real_rect.x = 0;
real_rect.y = 0;
real_rect.w = window->w;
@@ -2189,21 +2190,25 @@ SDL_RenderCopy(SDL_TextureID textureID, const SDL_Rect * srcrect,
return -1;
}
window = SDL_GetWindowFromID(renderer->window);
real_srcrect.x = 0;
real_srcrect.y = 0;
real_srcrect.w = texture->w;
real_srcrect.h = texture->h;
if (srcrect) {
real_srcrect = *srcrect;
} else {
real_srcrect.x = 0;
real_srcrect.y = 0;
real_srcrect.w = texture->w;
real_srcrect.h = texture->h;
if (!SDL_IntersectRect(srcrect, &real_srcrect, &real_srcrect)) {
return 0;
}
}
real_dstrect.x = 0;
real_dstrect.y = 0;
real_dstrect.w = window->w;
real_dstrect.h = window->h;
if (dstrect) {
real_dstrect = *dstrect;
} else {
real_dstrect.x = 0;
real_dstrect.y = 0;
real_dstrect.w = window->w;
real_dstrect.h = window->h;
if (!SDL_IntersectRect(dstrect, &real_dstrect, &real_dstrect)) {
return 0;
}
}
return renderer->RenderCopy(renderer, texture, &real_srcrect,