static void RenderVolumetricClouds_Sky_High(CommandBuffer cmd, VolumetricCloudsSkyHighPassData passData, MaterialPropertyBlock mpb)
{
// Compute the number of tiles to evaluate
int finalTX = (passData.finalWidth + (8 - 1)) / 8;
int finalTY = (passData.finalHeight + (8 - 1)) / 8;
// Bind the sampling textures
BlueNoise.BindDitheredTextureSet(cmd, passData.commonData.ditheredTextureSet);
// Set the multi compile
CoreUtils.SetKeyword(cmd, "LOCAL_VOLUMETRIC_CLOUDS", false);
// Bind the constant buffer
ConstantBuffer.Push(cmd, passData.commonData.cloudsCB, passData.commonData.volumetricCloudsCS, HDShaderIDs._ShaderVariablesClouds);
// Ray-march the clouds for this frame
CoreUtils.SetKeyword(cmd, "PHYSICALLY_BASED_SUN", passData.commonData.cloudsCB._PhysicallyBasedSun == 1);
cmd.SetComputeTextureParam(passData.commonData.volumetricCloudsCS, passData.renderKernel, HDShaderIDs._MaxZMaskTexture, passData.maxZMask);
cmd.SetComputeTextureParam(passData.commonData.volumetricCloudsCS, passData.renderKernel, HDShaderIDs._Worley128RGBA, passData.commonData.worley128RGBA);
cmd.SetComputeTextureParam(passData.commonData.volumetricCloudsCS, passData.renderKernel, HDShaderIDs._ErosionNoise, passData.commonData.erosionNoise);
cmd.SetComputeTextureParam(passData.commonData.volumetricCloudsCS, passData.renderKernel, HDShaderIDs._CloudMapTexture, passData.commonData.cloudMapTexture);
cmd.SetComputeTextureParam(passData.commonData.volumetricCloudsCS, passData.renderKernel, HDShaderIDs._CloudLutTexture, passData.commonData.cloudLutTexture);
cmd.SetComputeBufferParam(passData.commonData.volumetricCloudsCS, passData.renderKernel, HDShaderIDs._VolumetricCloudsAmbientProbeBuffer, passData.ambientProbeBuffer);
// Output buffers
cmd.SetComputeTextureParam(passData.commonData.volumetricCloudsCS, passData.renderKernel, HDShaderIDs._CloudsLightingTextureRW, passData.intermediateLightingBuffer0);
cmd.SetComputeTextureParam(passData.commonData.volumetricCloudsCS, passData.renderKernel, HDShaderIDs._CloudsDepthTextureRW, passData.intermediateDepthBuffer);
// Trace the clouds
cmd.DispatchCompute(passData.commonData.volumetricCloudsCS, passData.renderKernel, finalTX, finalTY, 1);
// Reset the multi compile
CoreUtils.SetKeyword(cmd, "PHYSICALLY_BASED_SUN", false);
if (SystemInfo.graphicsDeviceType == GraphicsDeviceType.Metal)
{
// On Intel GPUs on OSX, due to the fact that we cannot always rely on pre-exposure the hardware blending fails and turns into Nans when
// the values are close to the max fp16 value. We do the blending manually on metal to avoid that behavior.
// Copy the target face of the cubemap into a temporary texture
cmd.CopyTexture(passData.output, (int)passData.cubemapFace, 0, passData.intermediateLightingBuffer1, 0, 0);
// Output the result into the output buffer
mpb.SetTexture(HDShaderIDs._CameraColorTexture, passData.intermediateLightingBuffer1);
mpb.SetTexture(HDShaderIDs._VolumetricCloudsUpscaleTextureRW, passData.intermediateLightingBuffer0);
CoreUtils.SetRenderTarget(cmd, passData.output, ClearFlag.None, 0, passData.cubemapFace);
CoreUtils.DrawFullScreen(cmd, passData.cloudCombinePass, mpb, 1);
}
else
{
// Output the result into the output buffer
mpb.SetTexture(HDShaderIDs._VolumetricCloudsUpscaleTextureRW, passData.intermediateLightingBuffer0);
CoreUtils.SetRenderTarget(cmd, passData.output, ClearFlag.None, 0, passData.cubemapFace);
CoreUtils.DrawFullScreen(cmd, passData.cloudCombinePass, mpb, 2);
}
}
void PrepareVolumetricCloudsSkyHighPassData(RenderGraph renderGraph, RenderGraphBuilder builder, HDCamera hdCamera, int width, int height, Matrix4x4[] pixelCoordToViewDir, CubemapFace cubemapFace, VolumetricClouds settings, TextureHandle output, VolumetricCloudsSkyHighPassData data)
{
// Compute the cloud model data
CloudModelData cloudModelData = GetCloudModelData(settings);
// Fill the common data
FillVolumetricCloudsCommonData(false, settings, TVolumetricCloudsCameraType.Sky, in cloudModelData, ref data.commonData);
// If this is a baked reflection, we run everything at full res
data.finalWidth = width;
data.finalHeight = height;
// Sky
data.cubemapFace = cubemapFace;
data.cloudCombinePass = m_CloudCombinePass;
// Compute shader and kernels
data.renderKernel = m_CloudRenderKernel;
data.combineKernel = m_CombineCloudsSkyKernel;
data.pixelCoordToViewDir = pixelCoordToViewDir;
// Update the constant buffer
VolumetricCloudsCameraData cameraData;
cameraData.cameraType = data.commonData.cameraType;
cameraData.traceWidth = data.finalWidth;
cameraData.traceHeight = data.finalHeight;
cameraData.intermediateWidth = data.finalWidth;
cameraData.intermediateHeight = data.finalHeight;
cameraData.finalWidth = data.finalWidth;
cameraData.finalHeight = data.finalHeight;
cameraData.viewCount = 1;
cameraData.enableExposureControl = data.commonData.enableExposureControl;
cameraData.lowResolution = false;
cameraData.enableIntegration = false;
UpdateShaderVariableslClouds(ref data.commonData.cloudsCB, hdCamera, settings, cameraData, cloudModelData, false);
int skyResolution = (int)m_Asset.currentPlatformRenderPipelineSettings.lightLoopSettings.skyReflectionSize;
data.intermediateLightingBuffer0 = builder.CreateTransientTexture(GetVolumetricCloudsIntermediateLightingBufferDesc());
data.intermediateDepthBuffer = builder.CreateTransientTexture(GetVolumetricCloudsIntermediateDepthBufferDesc());
if (SystemInfo.graphicsDeviceType == GraphicsDeviceType.Metal)
{
data.intermediateLightingBuffer1 = builder.CreateTransientTexture(GetVolumetricCloudsIntermediateLightingBufferDesc());
data.output = builder.ReadWriteTexture(output);
}
else
{
data.output = builder.WriteTexture(output);
}
data.maxZMask = builder.ReadTexture(renderGraph.defaultResources.blackTextureXR);
data.ambientProbeBuffer = builder.ReadComputeBuffer(renderGraph.ImportComputeBuffer(m_CloudsProbeBuffer));
}
