int
D3DOverdrawWindow::
Loop(void)
{
int nOverdraw = 0;
IDirect3DQuery9* pOcclusionQuery;
DWORD numberOfPixelsDrawn;
d3d->CreateQuery(D3DQUERYTYPE_OCCLUSION, &pOcclusionQuery);
for (unsigned int iViewpoint = 0; iViewpoint < m_nViewpointCount;
iViewpoint++)
{
// Add an end marker to the command buffer queue.
pOcclusionQuery->Issue(D3DISSUE_BEGIN);
// Draw scene
SetupDraw(iViewpoint);
DrawModel();
d3d->EndScene();
d3d->Present(NULL, NULL, NULL, NULL);
// Add an end marker to the command buffer queue.
pOcclusionQuery->Issue(D3DISSUE_END);
// Force the driver to execute the commands from the command buffer.
// Empty the command buffer and wait until the GPU is idle.
while (S_FALSE == pOcclusionQuery->GetData(&numberOfPixelsDrawn,
sizeof(DWORD), D3DGETDATA_FLUSH))
;
nOverdraw += numberOfPixelsDrawn;
}
pOcclusionQuery->Release();
return nOverdraw;
}
void Graphics::renderOcclusionQuery(uint occlusionQuery, int triangles) {
IDirect3DQuery9* pQuery = queryPool[occlusionQuery];
if (pQuery != nullptr) {
pQuery->Issue(D3DISSUE_BEGIN);
device->DrawPrimitive(D3DPT_TRIANGLELIST, 0, triangles);
pQuery->Issue(D3DISSUE_END);
}
}
void onBeginFrame()
{
if(!frequencyQuery)
{
static_cast<GFXPCD3D9Device*>(GFX)->getDevice()->CreateQuery(D3DQUERYTYPE_TIMESTAMPDISJOINT, &disjointQuery);
static_cast<GFXPCD3D9Device*>(GFX)->getDevice()->CreateQuery(D3DQUERYTYPE_TIMESTAMPFREQ, &frequencyQuery);
}
disjointQuery->Issue(D3DISSUE_BEGIN);
frequencyQuery->Issue(D3DISSUE_END);
}
void CRenderSystemDX::FlushGPU()
{
IDirect3DQuery9* pEvent = NULL;
m_pD3DDevice->CreateQuery(D3DQUERYTYPE_EVENT, &pEvent);
if (pEvent != NULL)
{
pEvent->Issue(D3DISSUE_END);
while (S_FALSE == pEvent->GetData(NULL, 0, D3DGETDATA_FLUSH))
Sleep(1);
}
}
void D3D9HardwareOcclusionQuery::endOcclusionQuery()
{
IDirect3DDevice9* pCurDevice = D3D9RenderSystem::getActiveD3D9Device();
DeviceToQueryIterator it = mMapDeviceToQuery.find(pCurDevice);
if (it == mMapDeviceToQuery.end())
{
OGRE_EXCEPT(Exception::ERR_RENDERINGAPI_ERROR,
"End occlusion called without matching begin call !!",
"D3D9HardwareOcclusionQuery::endOcclusionQuery" );
}
IDirect3DQuery9* pOccQuery = mMapDeviceToQuery[pCurDevice];
if (pOccQuery != NULL)
pOccQuery->Issue(D3DISSUE_END);
}
//------------------------------------------------------------------
// Occlusion query functions (see base class documentation for this)
//--
void D3D9HardwareOcclusionQuery::beginOcclusionQuery()
{
IDirect3DDevice9* pCurDevice = D3D9RenderSystem::getActiveD3D9Device();
DeviceToQueryIterator it = mMapDeviceToQuery.find(pCurDevice);
// No resource exits for current device -> create it.
if (it == mMapDeviceToQuery.end() || it->second == NULL)
createQuery(pCurDevice);
// Grab the query of the current device.
IDirect3DQuery9* pOccQuery = mMapDeviceToQuery[pCurDevice];
if (pOccQuery != NULL)
{
pOccQuery->Issue(D3DISSUE_BEGIN);
mIsQueryResultStillOutstanding = true;
mPixelCount = 0;
}
}
void Display::sync(bool block)
{
HRESULT result;
IDirect3DQuery9* query = allocateEventQuery();
if (!query)
{
return;
}
result = query->Issue(D3DISSUE_END);
ASSERT(SUCCEEDED(result));
do
{
result = query->GetData(NULL, 0, D3DGETDATA_FLUSH);
if(block && result == S_FALSE)
{
// Keep polling, but allow other threads to do something useful first
Sleep(0);
// explicitly check for device loss
// some drivers seem to return S_FALSE even if the device is lost
// instead of D3DERR_DEVICELOST like they should
if (testDeviceLost())
{
result = D3DERR_DEVICELOST;
}
}
}
while(block && result == S_FALSE);
freeEventQuery(query);
if (isDeviceLostError(result))
{
notifyDeviceLost();
}
}
void onEndFrame()
{
disjointQuery->Issue(D3DISSUE_END);
}