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https://github.com/FunkyFr3sh/cnc-ddraw.git
synced 2025-03-15 06:04:49 +01:00
add some more checks
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63c4e6ff57
commit
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@ -52,6 +52,12 @@ HRESULT dds_Blt(IDirectDrawSurfaceImpl *This, LPRECT lpDestRect, LPDIRECTDRAWSUR
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if (src_surface)
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{
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if (src_rect.left < 0)
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src_rect.left = 0;
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if (src_rect.top < 0)
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src_rect.top = 0;
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if (src_rect.right > src_surface->width)
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src_rect.right = src_surface->width;
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@ -65,6 +71,12 @@ HRESULT dds_Blt(IDirectDrawSurfaceImpl *This, LPRECT lpDestRect, LPDIRECTDRAWSUR
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src_rect.top = src_rect.bottom;
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}
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if (dst_rect.left < 0)
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dst_rect.left = 0;
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if (dst_rect.top < 0)
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dst_rect.top = 0;
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if (dst_rect.right > This->width)
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dst_rect.right = This->width;
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@ -468,6 +480,12 @@ HRESULT dds_BltFast(IDirectDrawSurfaceImpl *This, DWORD dst_x, DWORD dst_y, LPDI
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{
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memcpy(&src_rect, lpSrcRect, sizeof(src_rect));
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if (src_rect.left < 0)
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src_rect.left = 0;
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if (src_rect.top < 0)
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src_rect.top = 0;
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if (src_rect.right > src_surface->width)
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src_rect.right = src_surface->width;
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@ -486,6 +504,12 @@ HRESULT dds_BltFast(IDirectDrawSurfaceImpl *This, DWORD dst_x, DWORD dst_y, LPDI
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RECT dst_rect = { dst_x, dst_y, (src_rect.right - src_rect.left) + dst_x, (src_rect.bottom - src_rect.top) + dst_y };
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if (dst_rect.left < 0)
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dst_rect.left = 0;
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if (dst_rect.top < 0)
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dst_rect.top = 0;
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if (dst_rect.right > This->width)
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dst_rect.right = This->width;
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@ -498,6 +522,8 @@ HRESULT dds_BltFast(IDirectDrawSurfaceImpl *This, DWORD dst_x, DWORD dst_y, LPDI
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if (dst_rect.top > dst_rect.bottom)
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dst_rect.top = dst_rect.bottom;
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dst_x = dst_rect.left;
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dst_y = dst_rect.top;
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int dst_w = dst_rect.right - dst_rect.left;
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int dst_h = dst_rect.bottom - dst_rect.top;
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