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Correctly lock and unlock surface for a single-surface Blt() and 

BltFast() call.
This commit is contained in:
Matthew Mastracci 2005-04-11 14:26:00 +00:00 committed by Alexandre Julliard
parent 4ead2b4cb7
commit 11959ba310
1 changed files with 43 additions and 14 deletions
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43
dlls/ddraw/dsurface/dib.c
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@ -528,9 +528,15 @@ DIB_DirectDrawSurface_Blt(LPDIRECTDRAWSURFACE7 iface, LPRECT rdst,
DD_STRUCT_INIT(&sdesc);
sdesc.dwSize = sizeof(sdesc);
if (src) IDirectDrawSurface7_Lock(src, NULL, &sdesc, DDLOCK_READONLY, 0);
ddesc.dwSize = sizeof(ddesc);
if (src == iface) {
IDirectDrawSurface7_Lock(iface, NULL, &ddesc, 0, 0);
DD_STRUCT_COPY_BYSIZE(&sdesc, &ddesc);
} else {
if (src) IDirectDrawSurface7_Lock(src, NULL, &sdesc, DDLOCK_READONLY, 0);
IDirectDrawSurface7_Lock(iface,NULL,&ddesc,DDLOCK_WRITEONLY,0);
}
if ((sdesc.u4.ddpfPixelFormat.dwFlags & DDPF_FOURCC) &&
(ddesc.u4.ddpfPixelFormat.dwFlags & DDPF_FOURCC)) {
@ -581,7 +587,8 @@ DIB_DirectDrawSurface_Blt(LPDIRECTDRAWSURFACE7 iface, LPRECT rdst,
(xsrc.right > sdesc.dwWidth) || (xsrc.right < 0) ||
(xsrc.right < xsrc.left) || (xsrc.bottom < xsrc.top))) {
WARN("Application gave us bad source rectangle for Blt.\n");
return DDERR_INVALIDRECT;
ret = DDERR_INVALIDRECT;
goto release;
}
/* For the Destination rect, it can be out of bounds on the condition that a clipper
is set for the given surface.
@ -593,7 +600,8 @@ DIB_DirectDrawSurface_Blt(LPDIRECTDRAWSURFACE7 iface, LPRECT rdst,
(xdst.right > ddesc.dwWidth) || (xdst.right < 0) ||
(xdst.right < xdst.left) || (xdst.bottom < xdst.top))) {
WARN("Application gave us bad destination rectangle for Blt without a clipper set.\n");
return DDERR_INVALIDRECT;
ret = DDERR_INVALIDRECT;
goto release;
}
/* Now handle negative values in the rectangles. Warning: only supported for now
@ -958,8 +966,8 @@ error:
release:
IDirectDrawSurface7_Unlock(iface,NULL);
if (src) IDirectDrawSurface7_Unlock(src,NULL);
return DD_OK;
if (src && src != iface) IDirectDrawSurface7_Unlock(src,NULL);
return ret;
}
/* BltBatch: generic, unimplemented */
@ -975,7 +983,7 @@ DIB_DirectDrawSurface_BltFast(LPDIRECTDRAWSURFACE7 iface, DWORD dstx,
HRESULT ret = DD_OK;
LPBYTE sbuf, dbuf;
RECT rsrc2;
RECT lock_src, lock_dst;
RECT lock_src, lock_dst, lock_union;
if (TRACE_ON(ddraw)) {
TRACE("(%p)->(%ld,%ld,%p,%p,%08lx)\n",
@ -1043,11 +1051,28 @@ DIB_DirectDrawSurface_BltFast(LPDIRECTDRAWSURFACE7 iface, DWORD dstx,
lock_dst.right = dstx + w;
lock_dst.bottom = dsty + h;
bpp = GET_BPP(This->surface_desc);
/* We need to lock the surfaces, or we won't get refreshes when done. */
if (src == iface) {
int pitch;
UnionRect(&lock_union, &lock_src, &lock_dst);
/* Lock the union of the two rectangles */
IDirectDrawSurface7_Lock(iface, &lock_union, &ddesc, 0, 0);
pitch = This->surface_desc.u1.lPitch;
/* Since sdesc was originally copied from this surface's description, we can just reuse it */
sdesc.lpSurface = (BYTE *)This->surface_desc.lpSurface + lock_src.top * pitch + lock_src.left * bpp;
ddesc.lpSurface = (BYTE *)This->surface_desc.lpSurface + lock_dst.top * pitch + lock_dst.left * bpp;
} else {
sdesc.dwSize = sizeof(sdesc);
IDirectDrawSurface7_Lock(src, &lock_src, &sdesc, DDLOCK_READONLY, 0);
ddesc.dwSize = sizeof(ddesc);
IDirectDrawSurface7_Lock(iface, &lock_dst, &ddesc, DDLOCK_WRITEONLY, 0);
}
/* Handle first the FOURCC surfaces... */
if ((sdesc.u4.ddpfPixelFormat.dwFlags & DDPF_FOURCC) && (ddesc.u4.ddpfPixelFormat.dwFlags & DDPF_FOURCC)) {
@ -1069,7 +1094,6 @@ DIB_DirectDrawSurface_BltFast(LPDIRECTDRAWSURFACE7 iface, DWORD dstx,
goto error;
}
bpp = GET_BPP(This->surface_desc);
sbuf = (BYTE *) sdesc.lpSurface;
dbuf = (BYTE *) ddesc.lpSurface;
@ -1141,8 +1165,13 @@ DIB_DirectDrawSurface_BltFast(LPDIRECTDRAWSURFACE7 iface, DWORD dstx,
}
error:
if (src == iface) {
IDirectDrawSurface7_Unlock(iface, &lock_union);
} else {
IDirectDrawSurface7_Unlock(iface, &lock_dst);
IDirectDrawSurface7_Unlock(src, &lock_src);
}
return ret;
}