public override void DrawDirectionalShadow(Camera currentCam, ref RenderClusterOptions opts, ref ShadowmapSettings settings, ref ShadowMapComponent shadMap, Matrix4x4[] cascadeShadowMapVP)
{
const int CASCADELEVELCOUNT = 4;
const int CASCADECLIPSIZE = (CASCADELEVELCOUNT + 1) * sizeof(float);
ComputeShader gpuFrustumShader = opts.cullingShader;
StaticFit staticFit;
staticFit.resolution = settings.resolution;
staticFit.mainCamTrans = currentCam;
staticFit.frustumCorners = shadMap.frustumCorners;
float *clipDistances = stackalloc float[CASCADECLIPSIZE];
clipDistances[0] = shadMap.shadCam.nearClipPlane;
clipDistances[1] = settings.firstLevelDistance;
clipDistances[2] = settings.secondLevelDistance;
clipDistances[3] = settings.thirdLevelDistance;
clipDistances[4] = settings.farestDistance;
opts.command.SetGlobalBuffer(ShaderIDs.verticesBuffer, baseBuffer.verticesBuffer);
opts.command.SetGlobalBuffer(ShaderIDs.resultBuffer, baseBuffer.resultBuffer);
for (int pass = 0; pass < CASCADELEVELCOUNT; ++pass)
{
Vector2 farClipDistance = new Vector2(clipDistances[pass], clipDistances[pass + 1]);
PipelineFunctions.GetfrustumCorners(farClipDistance, ref shadMap, currentCam);
// PipelineFunctions.SetShadowCameraPositionCloseFit(ref shadMap, ref settings);
Matrix4x4 invpVPMatrix;
PipelineFunctions.SetShadowCameraPositionStaticFit(ref staticFit, ref shadMap.shadCam, pass, cascadeShadowMapVP, out invpVPMatrix);
PipelineFunctions.GetCullingPlanes(ref invpVPMatrix, opts.frustumPlanes);
PipelineFunctions.SetBaseBuffer(baseBuffer, gpuFrustumShader, opts.frustumPlanes, opts.command);
PipelineFunctions.RunCullDispatching(baseBuffer, gpuFrustumShader, true, opts.command);
float *biasList = (float *)UnsafeUtility.AddressOf(ref settings.bias);
PipelineFunctions.UpdateCascadeState(ref shadMap, opts.command, biasList[pass] / currentCam.farClipPlane, pass);
opts.command.DrawProceduralIndirect(Matrix4x4.identity, shadMap.shadowDepthMaterial, 0, MeshTopology.Triangles, baseBuffer.instanceCountBuffer, 0);
opts.command.DispatchCompute(gpuFrustumShader, 1, 1, 1, 1);
}
}
