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#178 fix blt/bltfast clipping

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This commit is contained in:
FunkyFr3sh 2022-10-15 05:04:19 +02:00
parent cd5efade5d
commit fe82a8a607
1 changed files with 24 additions and 0 deletions
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24
src/ddsurface.c
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@ -115,12 +115,18 @@ HRESULT dds_Blt(
} }
*/ */
if (dst_rect.right < 0)
dst_rect.right = 0;
if (dst_rect.left < 0) if (dst_rect.left < 0)
{ {
src_rect.left += (LONG)(abs(dst_rect.left) * scale_w); src_rect.left += (LONG)(abs(dst_rect.left) * scale_w);
dst_rect.left = 0; dst_rect.left = 0;
} }
if (dst_rect.bottom < 0)
dst_rect.bottom = 0;
if (dst_rect.top < 0) if (dst_rect.top < 0)
{ {
src_rect.top += (LONG)(abs(dst_rect.top) * scale_h); src_rect.top += (LONG)(abs(dst_rect.top) * scale_h);
@ -147,9 +153,15 @@ HRESULT dds_Blt(
if (src_surface) if (src_surface)
{ {
if (src_rect.right < 0)
src_rect.right = 0;
if (src_rect.left < 0) if (src_rect.left < 0)
src_rect.left = 0; src_rect.left = 0;
if (src_rect.bottom < 0)
src_rect.bottom = 0;
if (src_rect.top < 0) if (src_rect.top < 0)
src_rect.top = 0; src_rect.top = 0;
@ -439,9 +451,15 @@ HRESULT dds_BltFast(
if (src_surface) if (src_surface)
{ {
if (src_rect.right < 0)
src_rect.right = 0;
if (src_rect.left < 0) if (src_rect.left < 0)
src_rect.left = 0; src_rect.left = 0;
if (src_rect.bottom < 0)
src_rect.bottom = 0;
if (src_rect.top < 0) if (src_rect.top < 0)
src_rect.top = 0; src_rect.top = 0;
@ -463,9 +481,15 @@ HRESULT dds_BltFast(
RECT dst_rect = { dst_x, dst_y, (src_rect.right - src_rect.left) + dst_x, (src_rect.bottom - src_rect.top) + dst_y }; RECT dst_rect = { dst_x, dst_y, (src_rect.right - src_rect.left) + dst_x, (src_rect.bottom - src_rect.top) + dst_y };
if (dst_rect.right < 0)
dst_rect.right = 0;
if (dst_rect.left < 0) if (dst_rect.left < 0)
dst_rect.left = 0; dst_rect.left = 0;
if (dst_rect.bottom < 0)
dst_rect.bottom = 0;
if (dst_rect.top < 0) if (dst_rect.top < 0)
dst_rect.top = 0; dst_rect.top = 0;