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; }
bool Graphics::isQueryResultsAvailable(uint occlusionQuery) { IDirect3DQuery9* pQuery = queryPool[occlusionQuery]; if (pQuery != nullptr) { if (S_OK == pQuery->GetData(0, 0, 0)) { return true; } } return false; }
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 Graphics::getQueryResults(uint occlusionQuery, uint* pixelCount) { IDirect3DQuery9* pQuery = queryPool[occlusionQuery]; if (pQuery != nullptr) { DWORD numberOfPixelsDrawn; HRESULT result = pQuery->GetData(&numberOfPixelsDrawn, sizeof(DWORD), 0); if (S_OK == result) { *pixelCount = numberOfPixelsDrawn; } else { Kore::log(Kore::LogLevel::Warning, "Check first if results are available"); *pixelCount = 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(); } }