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try to use a single memcpy if possible - adds stretching support (not used in C&C games though)

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FunkyFr3sh 2018-07-03 20:54:05 +02:00
parent 897fdb5bbb
commit ff7267d044
2 changed files with 45 additions and 23 deletions
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2
ddraw.rc
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@ -2,7 +2,7 @@
#define vxstr(a,b,c,d) str(a##.##b##.##c##.##d)
#define str(s) #s
#define VERSION 1,1,7,3
#define VERSION 1,1,7,4
1 VERSIONINFO
FILEVERSION VERSION

66
src/surface.c
View File

@ -104,29 +104,51 @@ HRESULT __stdcall ddraw_surface_Blt(IDirectDrawSurfaceImpl *This, LPRECT lpDestR
if(Source)
{
int dx=0,dy=0;
if (lpDestRect)
{
dx=lpDestRect->left;
dy=lpDestRect->top;
}
int x0=0,y0=0,x1=Source->width,y1=Source->height;
if (lpSrcRect)
{
x0 = max(x0, lpSrcRect->left);
x1 = min(x1, lpSrcRect->right);
y0 = max(y0, lpSrcRect->top);
y1 = min(y1, lpSrcRect->bottom);
}
unsigned char* to = (unsigned char *)This->surface + dy*This->width + dx;
unsigned char* from = (unsigned char *)Source->surface + y0*Source->width + x0;
int s = x1-x0;
//BitBlt(This->hDC, lpDestRect->left, lpDestRect->top, lpDestRect->right, lpDestRect->bottom,
// Source->hDC, lpSrcRect->left, lpSrcRect->top, SRCCOPY);
int dst_w = lpDestRect->right - lpDestRect->left;
int dst_h = lpDestRect->bottom - lpDestRect->top;
int src_w = lpSrcRect->right - lpSrcRect->left;
int src_h = lpSrcRect->bottom - lpSrcRect->top;
if (dst_w != src_w || dst_h != src_h)
{
StretchBlt(This->hDC, lpDestRect->left, lpDestRect->top, lpDestRect->right, lpDestRect->bottom,
Source->hDC, lpSrcRect->left, lpSrcRect->top, lpSrcRect->right, lpSrcRect->bottom, SRCCOPY);
}
else if (dst_w == This->width && dst_h == This->height &&
src_w == Source->width && src_h == Source->height)
{
memcpy(This->surface, Source->surface, This->width * This->height * This->lXPitch);
}
else
{
int dx=0,dy=0;
if (lpDestRect)
{
dx=lpDestRect->left;
dy=lpDestRect->top;
}
int x0=0,y0=0,x1=Source->width,y1=Source->height;
if (lpSrcRect)
{
x0 = max(x0, lpSrcRect->left);
x1 = min(x1, lpSrcRect->right);
y0 = max(y0, lpSrcRect->top);
y1 = min(y1, lpSrcRect->bottom);
}
unsigned char* to = (unsigned char *)This->surface + dy*This->width + dx;
unsigned char* from = (unsigned char *)Source->surface + y0*Source->width + x0;
int s = x1-x0;
int y;
for(y=y0; y<y1; ++y, to+=This->width, from+=Source->width)
{
memcpy(to, from, s);
}
}
int y;
for(y=y0; y<y1; ++y, to+=This->width, from+=Source->width)
{
memcpy(to, from, s);
}
}
if(This->caps & DDSCAPS_PRIMARYSURFACE && !(This->flags & DDSD_BACKBUFFERCOUNT) && ddraw->render.run)