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ddraw: Use EnumAttachedSurfaces to search for a render target.

This commit is contained in:
Stefan Dösinger 2007-04-22 20:26:16 +02:00 committed by Alexandre Julliard
parent 86eb79b0c9
commit c2ffffe1ff
1 changed files with 35 additions and 9 deletions
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44
dlls/ddraw/ddraw.c
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@ -2574,6 +2574,28 @@ IDirectDrawImpl_EnumSurfaces(IDirectDraw7 *iface,
return DD_OK;
}
static HRESULT WINAPI
findRenderTarget(IDirectDrawSurface7 *surface,
DDSURFACEDESC2 *desc,
void *ctx)
{
IDirectDrawSurfaceImpl *surf = ICOM_OBJECT(IDirectDrawSurfaceImpl, IDirectDrawSurface7, surface);
IDirectDrawSurfaceImpl **target = (IDirectDrawSurfaceImpl **) ctx;
if(!surf->isRenderTarget) {
*target = surf;
IDirectDrawSurface7_Release(surface);
return DDENUMRET_CANCEL;
}
/* Recurse into the surface tree */
IDirectDrawSurface7_EnumAttachedSurfaces(surface, ctx, findRenderTarget);
IDirectDrawSurface7_Release(surface);
if(*target) return DDENUMRET_CANCEL;
else return DDENUMRET_OK; /* Continue with the next neighbor surface */
}
/*****************************************************************************
* D3D7CB_CreateRenderTarget
*
@ -2606,25 +2628,29 @@ D3D7CB_CreateRenderTarget(IUnknown *device, IUnknown *pSuperior,
HANDLE* pSharedHandle)
{
ICOM_THIS_FROM(IDirectDrawImpl, IDirectDraw7, device);
IDirectDrawSurfaceImpl *d3dSurface = (IDirectDrawSurfaceImpl *) This->d3d_target->first_complex;
IDirectDrawSurfaceImpl *d3dSurface = This->d3d_target->first_complex, *target = NULL;
TRACE("(%p) call back\n", device);
/* Loop through the complex chain and try to find unused primary surfaces */
while(d3dSurface->isRenderTarget)
if(d3dSurface->isRenderTarget)
{
d3dSurface = d3dSurface->next_complex;
if(!d3dSurface) break;
IDirectDrawSurface7_EnumAttachedSurfaces(ICOM_INTERFACE(d3dSurface, IDirectDrawSurface7),
&target, findRenderTarget);
}
if(!d3dSurface)
else
{
d3dSurface = This->d3d_target;
target = d3dSurface;
}
if(!target)
{
target = This->d3d_target;
ERR(" (%p) : No DirectDrawSurface found to create the back buffer. Using the front buffer as back buffer. Uncertain consequences\n", This);
}
/* TODO: Return failure if the dimensions do not match, but this shouldn't happen */
*ppSurface = d3dSurface->WineD3DSurface;
d3dSurface->isRenderTarget = TRUE;
*ppSurface = target->WineD3DSurface;
target->isRenderTarget = TRUE;
TRACE("Returning wineD3DSurface %p, it belongs to surface %p\n", *ppSurface, d3dSurface);
return D3D_OK;
}