Method PrepareShadowRendering

trinity/Tr2ShadowMap.cpp:226–251

}

Tr2GpuResourcePool::Texture Tr2ShadowMap::PrepareShadowRendering( Tr2GpuResourcePool& gpuResourcePool, Tr2RenderContext& renderContext )
{
	CCP_STATS_ZONE( __FUNCTION__ );

	auto cascadedShadowDepth = gpuResourcePool.GetTempTexture( "cascadedShadowDepth", m_size * m_width, m_size * m_height, PixelFormat::PIXEL_FORMAT_D32_FLOAT, Tr2GpuUsage::DEPTH_STENCIL | Tr2GpuUsage::SHADER_RESOURCE );

	if( !cascadedShadowDepth.IsValid() )
	{
		// This could happen if device is lost
		return {};
	}

	// Using depth stencil as shadow map
	renderContext.m_esm.PushViewport();
	renderContext.m_esm.PushRenderTarget( Tr2TextureAL() ); //empty texture
	renderContext.m_esm.PushDepthStencilBuffer( cascadedShadowDepth );

	renderContext.m_esm.UpdateRenderTargetViewport( cascadedShadowDepth->GetWidth(), cascadedShadowDepth->GetHeight() );

	// we want a clean depth buffer for this
	CR( renderContext.Clear( CLEARFLAGS_ZBUFFER, 0xffffffff, 1, 0 ) );

	renderContext.SetReadOnlyDepth( false );

	return cascadedShadowDepth;
}

void Tr2ShadowMap::BeginShadowRendering( Tr2RenderContext& renderContext, int splitIndex )
{