public override void FrameUpdate(PipelineCamera cam, ref PipelineCommandData data)
{
CommandBuffer buffer = data.buffer;
ComputeShader scatter = data.resources.volumetricScattering;
if (cbdr.lightFlag == 0)
{
cbdr.cubemapShadowArray = null;
cbdr.dirLightShadowmap = null;
return;
}
int pass = 0;
if (cbdr.cubemapShadowArray != null)
{
pass |= 0b001;
}
if (cbdr.dirLightShadowmap != null)
{
pass |= 0b010;
}
buffer.SetGlobalFloat(ShaderIDs._MaxDistance, availableDistance);
buffer.SetGlobalInt(ShaderIDs._FrameCount, Time.frameCount);
HistoryVolumetric historyVolume = IPerCameraData.GetProperty(cam, () => new HistoryVolumetric());
//Volumetric Light
RenderTextureDescriptor desc = new RenderTextureDescriptor
{
autoGenerateMips = false,
bindMS = false,
colorFormat = RenderTextureFormat.ARGBHalf,
depthBufferBits = 0,
dimension = TextureDimension.Tex3D,
enableRandomWrite = true,
height = downSampledSize.y,
width = downSampledSize.x,
memoryless = RenderTextureMemoryless.None,
msaaSamples = 1,
shadowSamplingMode = ShadowSamplingMode.None,
sRGB = false,
useMipMap = false,
volumeDepth = downSampledSize.z,
vrUsage = VRTextureUsage.None
};
buffer.GetTemporaryRT(ShaderIDs._VolumeTex, desc, FilterMode.Bilinear);
if (!historyVolume.lastVolume)
{
historyVolume.lastVolume = new RenderTexture(desc);
historyVolume.lastVolume.filterMode = FilterMode.Bilinear;
historyVolume.lastVolume.wrapMode = TextureWrapMode.Clamp;
historyVolume.lastVolume.Create();
buffer.SetGlobalFloat(ShaderIDs._TemporalWeight, 0);
}
else
{
if (historyVolume.lastVolume.volumeDepth != desc.volumeDepth)
{
historyVolume.lastVolume.Release();
historyVolume.lastVolume.volumeDepth = desc.volumeDepth;
historyVolume.lastVolume.Create();
buffer.SetGlobalFloat(ShaderIDs._TemporalWeight, 0);
}
else
{
buffer.SetGlobalFloat(ShaderIDs._TemporalWeight, 0.7f);
}
}
buffer.SetGlobalVector(ShaderIDs._NearFarClip, new Vector4(cam.cam.farClipPlane / availableDistance, cam.cam.nearClipPlane / availableDistance, cam.cam.nearClipPlane));
buffer.SetGlobalVector(ShaderIDs._Screen_TexelSize, new Vector4(1f / cam.cam.pixelWidth, 1f / cam.cam.pixelHeight, cam.cam.pixelWidth, cam.cam.pixelHeight));
buffer.SetComputeBufferParam(scatter, pass, ShaderIDs._AllPointLight, cbdr.allPointLightBuffer);
buffer.SetComputeTextureParam(scatter, pass, ShaderIDs._FroxelTileLightList, cbdr.froxelTileLightList);
buffer.SetComputeBufferParam(scatter, pass, ShaderIDs._RandomBuffer, randomBuffer);
buffer.SetComputeTextureParam(scatter, pass, ShaderIDs._VolumeTex, ShaderIDs._VolumeTex);
buffer.SetComputeTextureParam(scatter, scatterPass, ShaderIDs._VolumeTex, ShaderIDs._VolumeTex);
buffer.SetComputeTextureParam(scatter, pass, ShaderIDs._LastVolume, historyVolume.lastVolume);
buffer.SetComputeTextureParam(scatter, pass, ShaderIDs._DirShadowMap, cbdr.dirLightShadowmap);
buffer.SetComputeTextureParam(scatter, pass, ShaderIDs._CubeShadowMapArray, cbdr.cubemapShadowArray);
buffer.SetGlobalVector(ShaderIDs._RandomSeed, (float4)(rand.NextDouble4() * 1000 + 100));
cbdr.cubemapShadowArray = null;
cbdr.dirLightShadowmap = null;
buffer.SetComputeIntParam(scatter, ShaderIDs._LightFlag, (int)cbdr.lightFlag);
buffer.DispatchCompute(scatter, pass, downSampledSize.x / 8, downSampledSize.y / 2, downSampledSize.z / marchStep);
buffer.CopyTexture(ShaderIDs._VolumeTex, historyVolume.lastVolume);
buffer.DispatchCompute(scatter, scatterPass, downSampledSize.x / 32, downSampledSize.y / 2, 1);
buffer.BlitSRT(cam.targets.renderTargetIdentifier, volumeMat, 0);
buffer.ReleaseTemporaryRT(ShaderIDs._VolumeTex);
cbdr.lightFlag = 0;
PipelineFunctions.ExecuteCommandBuffer(ref data);
}
