Method Process

src/Nazara/Graphics/DeferredPhongLightingPass.cpp:100–326

	*/

	bool DeferredPhongLightingPass::Process(const SceneData& sceneData, unsigned int firstWorkTexture, unsigned secondWorkTexture) const
	{
		NazaraAssert(sceneData.viewer, "Invalid viewer");
		NazaraUnused(secondWorkTexture);

		m_workRTT->SetColorTarget(firstWorkTexture);
		Renderer::SetTarget(m_workRTT);
		Renderer::SetViewport(Recti(0, 0, m_dimensions.x, m_dimensions.y));

		Renderer::SetTexture(0, m_GBuffer[0]);
		Renderer::SetTextureSampler(0, m_pointSampler);

		Renderer::SetTexture(1, m_GBuffer[1]);
		Renderer::SetTextureSampler(1, m_pointSampler);

		Renderer::SetTexture(2, m_GBuffer[2]);
		Renderer::SetTextureSampler(2, m_pointSampler);

		Renderer::SetTexture(3, m_depthStencilTexture);
		Renderer::SetTextureSampler(3, m_pointSampler);

		Renderer::SetClearColor(Color::Black);
		Renderer::Clear(RendererBuffer_Color);

		RenderStates lightStates;
		lightStates.dstBlend = BlendFunc_One;
		lightStates.srcBlend = BlendFunc_One;
		lightStates.blending = true;
		lightStates.depthBuffer = false;
		lightStates.depthWrite = false;

		// Directional lights
		if (!m_renderQueue->directionalLights.empty())
		{
			Renderer::SetRenderStates(lightStates);
			Renderer::SetShader(m_directionalLightShader);
			m_directionalLightShader->SendColor(m_directionalLightShaderSceneAmbientLocation, sceneData.ambientColor);
			m_directionalLightShader->SendVector(m_directionalLightShaderEyePositionLocation, sceneData.viewer->GetEyePosition());

			for (auto& light : m_renderQueue->directionalLights)
			{
				m_directionalLightShader->SendColor(m_directionalLightUniforms.locations.color, light.color);
				m_directionalLightShader->SendVector(m_directionalLightUniforms.locations.factors, Vector2f(light.ambientFactor, light.diffuseFactor));
				m_directionalLightShader->SendVector(m_directionalLightUniforms.locations.parameters1, Vector4f(light.direction));

				Renderer::DrawFullscreenQuad();
			}
		}

		// Point lights/Spot lights
		if (!m_renderQueue->pointLights.empty() || !m_renderQueue->spotLights.empty())
		{
			// http://www.altdevblogaday.com/2011/08/08/stencil-buffer-optimisation-for-deferred-lights/
			lightStates.cullingSide = FaceSide_Front;
			lightStates.stencilTest = true;
			lightStates.stencilDepthFail.back = StencilOperation_Invert;
			lightStates.stencilDepthFail.front = StencilOperation_Invert;
			lightStates.stencilFail.back = StencilOperation_Keep;