Ssao::~Ssao()
{
ReleaseCOM(mScreenQuadVB);
ReleaseCOM(mScreenQuadIB);
ReleaseCOM(mRandomVectorSRV);
ReleaseTextureViews();
}
void Ssao::BuildTextureViews()
{
ReleaseTextureViews();
D3D11_TEXTURE2D_DESC texDesc;
texDesc.Width = mRenderTargetWidth;
texDesc.Height = mRenderTargetHeight;
texDesc.MipLevels = 1;
texDesc.ArraySize = 1;
texDesc.Format = DXGI_FORMAT_R16G16B16A16_FLOAT;
texDesc.SampleDesc.Count = 1;
texDesc.SampleDesc.Quality = 0;
texDesc.Usage = D3D11_USAGE_DEFAULT;
texDesc.BindFlags = D3D11_BIND_SHADER_RESOURCE | D3D11_BIND_RENDER_TARGET;
texDesc.CPUAccessFlags = 0;
texDesc.MiscFlags = 0;
ID3D11Texture2D* normalDepthTex = 0;
HR(md3dDevice->CreateTexture2D(&texDesc, 0, &normalDepthTex));
HR(md3dDevice->CreateShaderResourceView(normalDepthTex, 0, &mNormalDepthSRV));
HR(md3dDevice->CreateRenderTargetView(normalDepthTex, 0, &mNormalDepthRTV));
// view saves a reference.
ReleaseCOM(normalDepthTex);
// Render ambient map at half resolution.
texDesc.Width = mRenderTargetWidth / 2;
texDesc.Height = mRenderTargetHeight / 2;
texDesc.Format = DXGI_FORMAT_R16_FLOAT;
ID3D11Texture2D* ambientTex0 = 0;
HR(md3dDevice->CreateTexture2D(&texDesc, 0, &ambientTex0));
HR(md3dDevice->CreateShaderResourceView(ambientTex0, 0, &mAmbientSRV0));
HR(md3dDevice->CreateRenderTargetView(ambientTex0, 0, &mAmbientRTV0));
ID3D11Texture2D* ambientTex1 = 0;
HR(md3dDevice->CreateTexture2D(&texDesc, 0, &ambientTex1));
HR(md3dDevice->CreateShaderResourceView(ambientTex1, 0, &mAmbientSRV1));
HR(md3dDevice->CreateRenderTargetView(ambientTex1, 0, &mAmbientRTV1));
// view saves a reference.
ReleaseCOM(ambientTex0);
ReleaseCOM(ambientTex1);
}
