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check if stretch or clip is needed

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This commit is contained in:
FunkyFr3sh 2018-11-17 06:55:24 +01:00
parent ab5542fd9d
commit b4da3fc3c4
1 changed files with 28 additions and 18 deletions
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46
src/surface.c
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@ -114,9 +114,18 @@ HRESULT __stdcall ddraw_surface_Blt(IDirectDrawSurfaceImpl *This, LPRECT lpDestR
RECT dstRect = { 0, 0, This->width, This->height };
if (lpSrcRect && Source)
{
memcpy(&srcRect, lpSrcRect, sizeof(srcRect));
if (lpDestRect)
memcpy(&dstRect, lpDestRect, sizeof(dstRect));
// stretch or clip?
BOOL isStretchBlt =
((srcRect.right - srcRect.left) != (dstRect.right - dstRect.left)) ||
((srcRect.bottom - srcRect.top) != (dstRect.bottom - dstRect.top));
if (Source)
{
if (srcRect.right > Source->width)
srcRect.right = Source->width;
@ -124,16 +133,11 @@ HRESULT __stdcall ddraw_surface_Blt(IDirectDrawSurfaceImpl *This, LPRECT lpDestR
srcRect.bottom = Source->height;
}
if (lpDestRect)
{
memcpy(&dstRect, lpDestRect, sizeof(dstRect));
if (dstRect.right > This->width)
dstRect.right = This->width;
if (dstRect.right > This->width)
dstRect.right = This->width;
if (dstRect.bottom > This->height)
dstRect.bottom = This->height;
}
if (dstRect.bottom > This->height)
dstRect.bottom = This->height;
int src_w = srcRect.right - srcRect.left;
int src_h = srcRect.bottom - srcRect.top;
@ -179,17 +183,20 @@ HRESULT __stdcall ddraw_surface_Blt(IDirectDrawSurfaceImpl *This, LPRECT lpDestR
{
if (dwFlags & DDBLT_KEYSRC)
{
if (dst_w == src_w && dst_h == src_h)
if (!isStretchBlt)
{
int width = dst_w > src_w ? src_w : dst_w;
int height = dst_h > src_h ? src_h : dst_h;
if (This->bpp == 8)
{
int y1, x1;
for (y1 = 0; y1 < dst_h; y1++)
for (y1 = 0; y1 < height; y1++)
{
int ydst = This->width * (y1 + dst_y);
int ysrc = Source->width * (y1 + src_y);
for (x1 = 0; x1 < dst_w; x1++)
for (x1 = 0; x1 < width; x1++)
{
unsigned char c = ((unsigned char *)Source->surface)[x1 + src_x + ysrc];
@ -203,12 +210,12 @@ HRESULT __stdcall ddraw_surface_Blt(IDirectDrawSurfaceImpl *This, LPRECT lpDestR
else if (This->bpp == 16)
{
int y1, x1;
for (y1 = 0; y1 < dst_h; y1++)
for (y1 = 0; y1 < height; y1++)
{
int ydst = This->width * (y1 + dst_y);
int ysrc = Source->width * (y1 + src_y);
for (x1 = 0; x1 < dst_w; x1++)
for (x1 = 0; x1 < width; x1++)
{
unsigned short c = ((unsigned short *)Source->surface)[x1 + src_x + ysrc];
@ -227,8 +234,11 @@ HRESULT __stdcall ddraw_surface_Blt(IDirectDrawSurfaceImpl *This, LPRECT lpDestR
}
else
{
if (dst_w == src_w && dst_h == src_h)
if (!isStretchBlt)
{
int width = dst_w > src_w ? src_w : dst_w;
int height = dst_h > src_h ? src_h : dst_h;
unsigned char *src =
(unsigned char *)Source->surface + (src_x * Source->lXPitch) + (Source->lPitch * src_y);
@ -236,9 +246,9 @@ HRESULT __stdcall ddraw_surface_Blt(IDirectDrawSurfaceImpl *This, LPRECT lpDestR
(unsigned char *)This->surface + (dst_x * This->lXPitch) + (This->lPitch * dst_y);
int i;
for (i = 0; i < dst_h; i++)
for (i = 0; i < height; i++)
{
memcpy(dst, src, dst_w * This->lXPitch);
memcpy(dst, src, width * This->lXPitch);
src += Source->lPitch;
dst += This->lPitch;