HRESULT CDxtexDoc::LoadSurfaceFromVolumeSlice(LPDIRECT3DVOLUME9 pVolume, UINT iSlice, LPDIRECT3DSURFACE9 psurf)
{
HRESULT hr;
D3DVOLUME_DESC vd;
D3DLOCKED_BOX lb;
D3DBOX box;
RECT rc;
pVolume->GetDesc(&vd);
box.Left = 0;
box.Right = vd.Width;
box.Top = 0;
box.Bottom = vd.Height;
box.Front = iSlice;
box.Back = iSlice + 1;
rc.left = 0;
rc.right = vd.Width;
rc.top = 0;
rc.bottom = vd.Height;
hr = pVolume->LockBox(&lb, &box, 0);
if (FAILED(hr))
return hr;
hr = D3DXLoadSurfaceFromMemory(psurf, NULL, NULL, lb.pBits, vd.Format, lb.RowPitch,
NULL, &rc, D3DX_DEFAULT, 0);
pVolume->UnlockBox();
return hr;
}
HRESULT CDxtexDoc::LoadVolumeSliceFromSurface(LPDIRECT3DVOLUME9 pVolume, UINT iSlice, LPDIRECT3DSURFACE9 psurf)
{
HRESULT hr;
D3DSURFACE_DESC sd;
D3DVOLUME_DESC vd;
D3DLOCKED_RECT lr;
D3DBOX boxSrc;
D3DBOX boxDest;
psurf->GetDesc(&sd);
pVolume->GetDesc(&vd);
boxSrc.Left = 0;
boxSrc.Right = sd.Width;
boxSrc.Top = 0;
boxSrc.Bottom = sd.Height;
boxSrc.Front = 0;
boxSrc.Back = 1;
boxDest.Left = 0;
boxDest.Right = vd.Width;
boxDest.Top = 0;
boxDest.Bottom = vd.Height;
boxDest.Front = iSlice;
boxDest.Back = iSlice + 1;
hr = psurf->LockRect(&lr, NULL, 0);
if (FAILED(hr))
return hr;
hr = D3DXLoadVolumeFromMemory(pVolume, NULL, &boxDest, lr.pBits, sd.Format, lr.Pitch,
0, NULL, &boxSrc, D3DX_DEFAULT, 0);
psurf->UnlockRect();
return hr;
}