Method Init

demo/d3d11/diffuseRender.cpp:34–108

void DiffuseRenderer::Init(ID3D11Device* device, ID3D11DeviceContext* context)
{
	m_device = device;
	m_deviceContext = context;

	// create the input layout
	{
		D3D11_INPUT_ELEMENT_DESC inputElementDescs[] =
		{
			{ "POSITION", 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, 0, D3D11_INPUT_PER_VERTEX_DATA, 0 },
			{ "VELOCITY", 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 1, 0, D3D11_INPUT_PER_VERTEX_DATA, 0 },
		};

		m_device->CreateInputLayout(inputElementDescs, 2, g_diffuseVS, sizeof(g_diffuseVS), &m_inputLayout);
	}

	// create the shaders
	m_device->CreateVertexShader(g_diffuseVS, sizeof(g_diffuseVS), nullptr, &m_diffuseVS);
	m_device->CreateGeometryShader(g_diffuseGS, sizeof(g_diffuseGS), nullptr, &m_diffuseGS);
	m_device->CreatePixelShader(g_diffusePS, sizeof(g_diffusePS), nullptr, &m_diffusePS);

	{
		D3D11_BLEND_DESC blendDesc = {};
		blendDesc.AlphaToCoverageEnable = false;
		blendDesc.IndependentBlendEnable = false;
		blendDesc.RenderTarget[0].BlendEnable = true;
		blendDesc.RenderTarget[0].SrcBlend = D3D11_BLEND_ONE;
		blendDesc.RenderTarget[0].DestBlend = D3D11_BLEND_INV_SRC_ALPHA;
		blendDesc.RenderTarget[0].BlendOp = D3D11_BLEND_OP_ADD;
		blendDesc.RenderTarget[0].SrcBlendAlpha = D3D11_BLEND_ONE;
		blendDesc.RenderTarget[0].DestBlendAlpha = D3D11_BLEND_INV_SRC_ALPHA;
		blendDesc.RenderTarget[0].BlendOpAlpha = D3D11_BLEND_OP_ADD;
		blendDesc.RenderTarget[0].RenderTargetWriteMask = D3D11_COLOR_WRITE_ENABLE_ALL;

		m_device->CreateBlendState(&blendDesc, &m_blendState);
	}

	{
		D3D11_DEPTH_STENCIL_DESC depthStateDesc = {};
		depthStateDesc.DepthEnable = TRUE;	
		depthStateDesc.DepthWriteMask = D3D11_DEPTH_WRITE_MASK_ZERO;
		depthStateDesc.DepthFunc = D3D11_COMPARISON_LESS_EQUAL;

		device->CreateDepthStencilState(&depthStateDesc, &m_depthStencilState);
	}

	// create a constant buffer
	{
		D3D11_BUFFER_DESC bufDesc;
		bufDesc.ByteWidth = sizeof(DiffuseShaderConst); // 64 * sizeof(float);
		bufDesc.Usage = D3D11_USAGE_DYNAMIC;
		bufDesc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
		bufDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
		bufDesc.MiscFlags = 0;

		m_device->CreateBuffer(&bufDesc, nullptr, &m_constantBuffer);
	}