Method RenderIntoCloudShadowMap

trinity/Eve/EveSpaceScene.cpp:2369–2428

}

void EveSpaceScene::RenderIntoCloudShadowMap( Tr2RenderContext& renderContext, const ITr2VolumetricRenderable::ShadowInfo* cloudShadowInformation, std::vector<IEveShadowCaster*> shadowCasters )
{
	CCP_STATS_ZONE( __FUNCTION__ );

	// Get distance from camera to zFar
	auto direction = Tr2Renderer::GetViewPosition() - cloudShadowInformation->aabbMax;
	float dist = Length( direction );

	auto projection = PerspectiveFovMatrix( Tr2Renderer::GetFieldOfView(), Tr2Renderer::GetAspectRatio(), m_updateContext.GetFrustum().m_zNear, dist );
	auto invViewProj = Inverse( projection ) * Tr2Renderer::GetInverseViewTransform();
	const Matrix viewProj = Inverse( invViewProj );

	TriFrustum frustum;
	frustum.ExtractFrustum( &viewProj );

	{
		CCP_STATS_ZONE( "get shadowbatches for volumetrics" );
		auto shadowFrustum = TriShadowOrthoFrustum( cloudShadowInformation->shadowFrustum, cloudShadowInformation->shadowMapSize, m_sunData.DirWorld );
		float sizeInShadow = 0.0f;
		for( auto& caster : shadowCasters )
		{
			caster->IsCastingShadow( frustum, shadowFrustum, TR2RENDERREASON_NORMAL, sizeInShadow );
			// special threshold check
			if( sizeInShadow > 5.0f )
			{
				auto perObjData = caster->GetShadowPerObjectData( m_shadowBatches[0].get() );
				caster->GetShadowBatches( m_shadowBatches[0].get(), perObjData, sizeInShadow );
			}
		}
		m_instancedMeshManager->GetShadowBatches( m_updateContext.GetFrustum(), shadowFrustum, m_updateContext.GetInvLodFactor(), { { TRIBATCHTYPE_OPAQUE, *m_shadowBatches[0] } } );
	}

	m_shadowBatches[0]->Finalize();
	PerFrameVSData data;
	data.ViewProjectionMat = Transpose( cloudShadowInformation->lightViewProj );

	static const unsigned perFrameVsMask =
		( 1 << VERTEX_SHADER ) |
		SHADER_TYPE_EXISTS( COMPUTE_SHADER ) |
		SHADER_TYPE_EXISTS( GEOMETRY_SHADER ) |
		SHADER_TYPE_EXISTS( HULL_SHADER ) |
		SHADER_TYPE_EXISTS( DOMAIN_SHADER );
	FillAndSetConstants( m_shadowPerFrameVSBuffer, &data, sizeof( data ), perFrameVsMask, Tr2Renderer::GetPerFrameVSStartRegister(), renderContext );

	if( m_shadowBatches[0]->GetBatchCount() )
	{
		renderContext.m_esm.SetInvertedDepthTest( false );
		ON_BLOCK_EXIT( [&] { renderContext.m_esm.SetInvertedDepthTest( true ); } );
		renderContext.m_esm.ApplyStandardStates( Tr2EffectStateManager::RM_OPAQUE );
		renderContext.RenderBatches( m_shadowBatches[0].get(), BlueSharedString( "Shadow" ) );
	}

	m_shadowBatches[0]->Clear();

	renderContext.SetReadOnlyDepth( false );

	renderContext.m_esm.PopRenderTarget();
	renderContext.m_esm.PopDepthStencilBuffer();