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;
}
GraphicsManager::GraphicsManager()
{ // Initialises PSGL for to use for drawing and translating, sets up the draw settings
// then creates the light and HUD.
InitialisePSGL();
SetupDraw();
CreateLight();
pHUD = new HUD();
} // Constructor()
bool
D3DOverdrawWindow::
NormalizedLoop(float& fOverdraw, float& fOverdrawMax)
{
int nOverdraw = 0;
int nOverdrawPix = 0;
fOverdrawMax = 0;
DWORD numberOfPixelsDrawn;
DWORD numberOfPixelsDrawnPix;
SetupDraw(0);
for (unsigned int iViewpoint = 0; iViewpoint < m_nViewpointCount; iViewpoint += NUM_QUERIES)
{
for (unsigned int j = 0; j < NUM_QUERIES && iViewpoint + j < m_nViewpointCount; j++)
{
SetupView(iViewpoint + j);
SetupTransforms();
d3d->Clear(0, NULL, D3DCLEAR_ZBUFFER,
D3DCOLOR_XRGB(0, 0, 0), 1.0f, 0);
// Add an end marker to the command buffer queue.
m_pOcclusionQuery[j]->Issue(D3DISSUE_BEGIN);
// Draw scene
if (FAILED(DrawModel()))
{
return false;
}
// Add an end marker to the command buffer queue.
m_pOcclusionQuery[j]->Issue(D3DISSUE_END);
// Add an end marker to the command buffer queue.
d3d->SetRenderState(D3DRS_ZFUNC, D3DCMP_EQUAL);
m_pOcclusionQueryPix[j]->Issue(D3DISSUE_BEGIN);
// Draw scene
if (FAILED(DrawModel()))
{
return false;
}
// Add an end marker to the command buffer queue.
m_pOcclusionQueryPix[j]->Issue(D3DISSUE_END);
d3d->SetRenderState(D3DRS_ZFUNC, D3DCMP_LESS);
}
for (unsigned int j = 0; j < NUM_QUERIES && iViewpoint + j < m_nViewpointCount; j++)
{
// 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 == m_pOcclusionQuery[j]->GetData(&numberOfPixelsDrawn,
sizeof(DWORD), D3DGETDATA_FLUSH))
;
nOverdraw += numberOfPixelsDrawn;
while (S_FALSE == m_pOcclusionQueryPix[j]->GetData(&numberOfPixelsDrawnPix,
sizeof(DWORD), D3DGETDATA_FLUSH))
;
nOverdrawPix += numberOfPixelsDrawnPix;
if (numberOfPixelsDrawnPix > 0)
{
fOverdrawMax = max(fOverdrawMax, numberOfPixelsDrawn / (float)numberOfPixelsDrawnPix);
}
}
}
if (nOverdrawPix > 0)
{
fOverdraw = nOverdraw / (float)nOverdrawPix;
}
else
{
fOverdraw = 0;
}
return true;
}
int
D3DOverdrawWindow::
Loop(int iClusterA, int iClusterB)
{
int nOverdraw = 0;
DWORD numberOfPixelsDrawn;
int j = 0;
SetupDraw(0);
for (unsigned int iViewpoint = 0; iViewpoint < m_nViewpointCount; iViewpoint++)
{
SetupView(iViewpoint);
m_iTested++;
if (!CheckIsect(iClusterA, iClusterB))
{
continue;
}
m_iRendered++;
SetupTransforms();
d3d->Clear(0, NULL, D3DCLEAR_ZBUFFER,
D3DCOLOR_XRGB(0, 0, 0), 1.0f, 0);
//Add this to remove triple dependencies
//DrawComplement(iClusterA, iClusterB);
// Add an end marker to the command buffer queue.
m_pOcclusionQuery[j]->Issue(D3DISSUE_BEGIN);
// Draw scene
DrawCluster(iClusterA);
DrawCluster(iClusterB);
// Add an end marker to the command buffer queue.
m_pOcclusionQuery[j]->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.
j++;
if (j == NUM_QUERIES)
{
for (j = 0; j < NUM_QUERIES; j++)
{
while (S_FALSE == m_pOcclusionQuery[j]->GetData(&numberOfPixelsDrawn,
sizeof(DWORD), D3DGETDATA_FLUSH))
;
nOverdraw += numberOfPixelsDrawn;
}
j = 0;
}
}
int jnum = j;
for (int j = 0; j < jnum; j++)
{
while (S_FALSE == m_pOcclusionQuery[j]->GetData(&numberOfPixelsDrawn,
sizeof(DWORD), D3DGETDATA_FLUSH))
;
nOverdraw += numberOfPixelsDrawn;
}
return nOverdraw;
}
