void EvaluateShadowDebugView(CommandBuffer cmd, HDCamera hdCamera)
{
// If this is the right debug mode and the index we are asking for is in the range
HDRenderPipeline hdrp = (RenderPipelineManager.currentPipeline as HDRenderPipeline);
if (FullScreenDebugMode.ScreenSpaceShadows == hdrp.m_CurrentDebugDisplaySettings.data.fullScreenDebugMode)
{
if (!hdrp.rayTracingSupported || (m_ScreenSpaceShadowChannelSlot <= hdrp.m_CurrentDebugDisplaySettings.data.screenSpaceShadowIndex))
{
// In this case we have not rendered any screenspace shadows, so push a black texture on the debug display
hdrp.PushFullScreenDebugTexture(hdCamera, cmd, TextureXR.GetBlackTextureArray(), FullScreenDebugMode.ScreenSpaceShadows);
return;
}
// Fetch the buffer where we we will store our result
RTHandle debugResultBuffer = GetRayTracingBuffer(InternalRayTracingBuffers.RGBA0);
// Generate the debug view
SSShadowDebugParameters sssdParams = PrepareSSShadowDebugParameters(hdCamera, (int)hdrp.m_CurrentDebugDisplaySettings.data.screenSpaceShadowIndex);
SSShadowDebugResources sssdResources = PrepareSSShadowDebugResources(debugResultBuffer);
ExecuteShadowDebugView(cmd, sssdParams, sssdResources);
// Push the full screen debug texture
hdrp.PushFullScreenDebugTexture(hdCamera, cmd, debugResultBuffer, FullScreenDebugMode.ScreenSpaceShadows);
}
}
static void ExecuteShadowDebugView(CommandBuffer cmd, SSShadowDebugParameters sssdParams, SSShadowDebugResources sssdResources)
{
// Evaluate the dispatch parameters
int shadowTileSize = 8;
int numTilesX = (sssdParams.texWidth + (shadowTileSize - 1)) / shadowTileSize;
int numTilesY = (sssdParams.texHeight + (shadowTileSize - 1)) / shadowTileSize;
// If the screen space shadows we are asked to deliver is available output it to the intermediate texture
cmd.SetComputeIntParam(sssdParams.shadowFilter, HDShaderIDs._DenoisingHistorySlot, sssdParams.targetShadow);
cmd.SetComputeTextureParam(sssdParams.shadowFilter, sssdParams.debugKernel, HDShaderIDs._ScreenSpaceShadowsTextureRW, sssdResources.screenSpaceShadowArray);
cmd.SetComputeTextureParam(sssdParams.shadowFilter, sssdParams.debugKernel, HDShaderIDs._DenoiseOutputTextureRW, sssdResources.outputBuffer);
cmd.DispatchCompute(sssdParams.shadowFilter, sssdParams.debugKernel, numTilesX, numTilesY, sssdParams.viewCount);
}
SSShadowDebugParameters PrepareSSShadowDebugParameters(HDCamera hdCamera, int targetShadow)
{
SSShadowDebugParameters sssdParams = new SSShadowDebugParameters();
// Set the camera parameters
sssdParams.texWidth = hdCamera.actualWidth;
sssdParams.texHeight = hdCamera.actualHeight;
sssdParams.viewCount = hdCamera.viewCount;
// Evaluation params
sssdParams.targetShadow = targetShadow;
// Kernel to be used
sssdParams.debugKernel = m_WriteShadowTextureDebugKernel;
// TODO: move the debug kernel outside of the ray tracing resources
sssdParams.shadowFilter = m_Asset.renderPipelineRayTracingResources.shadowFilterCS;
return(sssdParams);
}
