//render frame
void DX10Renderer::RenderFrame()
{
//rotate light - shouldnt do this each frame but i'm lazy
//***************************************************************************
//rotate light position
/*XMFLOAT3 yaxis(0,1,0), o(0,0,0), u(0,1,0);
XMMATRIX rotMatrix = XMMatrixRotationAxis( XMLoadFloat3(&yaxis), 0.01f);
//new rotated light pos
XMVECTOR olpos = XMLoadFloat3(&lightPos);
XMVECTOR lpos = XMVector3TransformCoord( olpos , rotMatrix);
XMStoreFloat3(&lightPos, lpos);
//get new view matrix
XMVECTOR fp = XMLoadFloat3( &o ), up = XMLoadFloat3( &u );
XMMATRIX vmat = XMMatrixLookAtLH( lpos, fp, up );
//create new light view proj matrix
XMMATRIX lpmat = XMLoadFloat4x4(&lightProjMatrix);
XMMATRIX lvpmat = XMMatrixMultiply(vmat, lpmat);
XMStoreFloat4x4(&lightViewProjMatrix, lvpmat);*/
//set per frame variables
//***************************************************************************
//effect vars
ID3D10EffectMatrixVariable* pWorldMatrix = pEffect->GetVariableByName("world")->AsMatrix();
ID3D10EffectMatrixVariable* pViewProjMatrix = pEffect->GetVariableByName("viewProj")->AsMatrix();
ID3D10EffectMatrixVariable* pLightViewProjMatrix = pEffect->GetVariableByName("lightViewProj")->AsMatrix();
ID3D10EffectVectorVariable* pLightPos = pEffect->GetVariableByName("lightPos")->AsVector();
pLightPos->SetFloatVectorArray( (float*) &lightPos, 0, 3);
pViewProjMatrix->SetMatrix( (float*) &camera.GetViewProjectionMatrix() );
pLightViewProjMatrix->SetMatrix( (float*) &lightViewProjMatrix );
//set topology to triangle list
pD3DDevice->IASetPrimitiveTopology(D3D10_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
//create shadow map
//***************************************************************************
//set render targets and viewport
pD3DDevice->OMSetRenderTargets(0, 0, pShadowMapDepthView);
pD3DDevice->RSSetViewports(1, &shadowMapViewport);
pD3DDevice->ClearDepthStencilView( pShadowMapDepthView, D3D10_CLEAR_DEPTH, 1.0f, 0 );
//render scene
int currMeshID = -1;
for (unsigned int i=0; i < scene.size(); i++)
{
//set appropriate vertex buffers
if ( currMeshID != scene[i].modelID )
{
currMeshID = scene[i].modelID;
pD3DDevice->IASetVertexBuffers( 0,1, &meshes[currMeshID].pVertexBuffer, &meshes[currMeshID].stride, &meshes[currMeshID].offset );
pD3DDevice->IASetIndexBuffer( meshes[currMeshID].pIndexBuffer, DXGI_FORMAT_R32_UINT, 0);
}
//set instance data and draw
pWorldMatrix->SetMatrix((float*) &scene[i].world);
pRenderShadowMapTechnique->GetPassByIndex(0)->Apply( 0 );
pD3DDevice->DrawIndexed(meshes[scene[i].modelID].numIndices, 0, 0);
}
//render final scene
//***************************************************************************
//set render targets and viewports
pD3DDevice->OMSetRenderTargets(1, &pRenderTargetView, pDepthStencilView);
pD3DDevice->RSSetViewports(1, &viewport);
pD3DDevice->ClearRenderTargetView( pRenderTargetView, D3DXCOLOR(0.6f,0.6f,0.6f,0) );
pD3DDevice->ClearDepthStencilView( pDepthStencilView, D3D10_CLEAR_DEPTH, 1.0f, 0 );
//bind shadow map texture and set shadow map bias
pEffect->GetVariableByName("shadowMap")->AsShaderResource()->SetResource( pShadowMapSRView );
pEffect->GetVariableByName("shadowMapBias")->AsScalar()->SetFloat(shadowMapBias);
int smSize[2] = { shadowMapViewport.Width, shadowMapViewport.Height };
pEffect->GetVariableByName("shadowMapSize")->AsVector()->SetIntVector(smSize);
//render scene
currMeshID = -1;
for (unsigned int i=0; i < scene.size(); i++)
{
//set appropriate vertex buffers
if ( currMeshID != scene[i].modelID )
{
currMeshID = scene[i].modelID;
pD3DDevice->IASetVertexBuffers( 0,1, &meshes[currMeshID].pVertexBuffer, &meshes[currMeshID].stride, &meshes[currMeshID].offset );
pD3DDevice->IASetIndexBuffer( meshes[currMeshID].pIndexBuffer, DXGI_FORMAT_R32_UINT, 0);
}
//set instance data and draw
pWorldMatrix->SetMatrix((float*) &scene[i].world);
pRenderTechnique->GetPassByIndex(0)->Apply( 0 );
pD3DDevice->DrawIndexed(meshes[scene[i].modelID].numIndices, 0, 0);
}
//render shadow map billboard
//***************************************************************************
pD3DDevice->IASetPrimitiveTopology(D3D10_PRIMITIVE_TOPOLOGY_POINTLIST);
pBillboardTechnique->GetPassByIndex(0)->Apply( 0 );
pD3DDevice->DrawIndexed(1, 0, 0);
//unbind shadow map as SRV
pEffect->GetVariableByName("shadowMap")->AsShaderResource()->SetResource( 0 );
pBillboardTechnique->GetPassByIndex(0)->Apply( 0 );
//swap buffers
pSwapChain->Present(0,0);
}
