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Clipping

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kichikuou
2016-07-10 13:16:25 +09:00
parent 33decadb1c
commit bd2e483704
1 changed files with 8 additions and 2 deletions
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src/sys/ags.cpp
+8 -2
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@@ -451,9 +451,16 @@ void AGS::draw_screen(int sx, int sy, int width, int height)
void AGS::invalidate_screen(int sx, int sy, int width, int height)
{
SDL_UnlockSurface(hBmpDest);
uint32* pixels = surface_line(hBmpDest, screen_height == 400 ? sy + (scroll - 400) : sy) + sx;
int top = screen_height == 400 ? sy + (scroll - 400) : sy;
if (top < 0) {
height += top;
top = 0;
}
uint32* pixels = surface_line(hBmpDest, top) + sx;
if (sy + height > screen_height)
height = screen_height - sy;
if (sx + width > hBmpDest->w)
width = hBmpDest->w - sx;
SDL_Rect rect = {sx, sy, width, height};
SDL_UpdateTexture(sdlTexture, &rect, pixels, hBmpDest->pitch);
SDL_RenderClear(sdlRenderer);
@@ -461,4 +468,3 @@ void AGS::invalidate_screen(int sx, int sy, int width, int height)
SDL_RenderPresent(sdlRenderer);
SDL_LockSurface(hBmpDest);
}