void MSAAFilter::RenderBackgroundVelocity()
{
PIXEvent pixEvent(L"Render Background Velocity");
ID3D11DeviceContextPtr context = deviceManager.ImmediateContext();
SetViewport(context, velocityTarget.Width, velocityTarget.Height);
// Don't use camera translation for background velocity
FirstPersonCamera tempCamera = camera;
tempCamera.SetPosition(Float3(0.0f, 0.0f, 0.0f));
backgroundVelocityConstants.Data.InvViewProjection = Float4x4::Transpose(Float4x4::Invert(tempCamera.ViewProjectionMatrix()));
backgroundVelocityConstants.Data.PrevViewProjection = Float4x4::Transpose(prevViewProjection);
backgroundVelocityConstants.Data.RTSize.x = float(velocityTarget.Width);
backgroundVelocityConstants.Data.RTSize.y = float(velocityTarget.Height);
backgroundVelocityConstants.Data.JitterOffset = jitterOffset;
backgroundVelocityConstants.ApplyChanges(context);
backgroundVelocityConstants.SetPS(context, 0);
prevViewProjection = tempCamera.ViewProjectionMatrix();
float blendFactor[4] = { 1.0f, 1.0f, 1.0f, 1.0f };
context->OMSetBlendState(blendStates.BlendDisabled(), blendFactor, 0xFFFFFFFF);
context->OMSetDepthStencilState(depthStencilStates.DepthEnabled(), 0);
context->RSSetState(rasterizerStates.NoCull());
ID3D11RenderTargetView* rtvs[1] = { velocityTarget.RTView };
context->OMSetRenderTargets(1, rtvs, depthBuffer.DSView);
context->VSSetShader(backgroundVelocityVS, nullptr, 0);
context->PSSetShader(backgroundVelocityPS, nullptr, 0);
context->GSSetShader(nullptr, nullptr, 0);
context->HSSetShader(nullptr, nullptr, 0);
context->DSSetShader(nullptr, nullptr, 0);
ID3D11Buffer* vbs[1] = { nullptr };
UINT strides[1] = { 0 };
UINT offsets[1] = { 0 };
context->IASetVertexBuffers(0, 1, vbs, strides, offsets);
context->IASetInputLayout(nullptr);
context->IASetIndexBuffer(nullptr, DXGI_FORMAT_R16_UINT, 0);
context->Draw(3, 0);
rtvs[0] = nullptr;
context->OMSetRenderTargets(1, rtvs, nullptr);
}
void Shader::set() const {
Context->VSSetShader(vertexShader, nullptr, 0);
Context->PSSetShader(pixelShader, nullptr, 0);
}
