private void RenderScreenSpaceReflection()
{
ScreenSpaceReflectionBuffer.Clear();
//////Set HierarchicalDepthRT//////
ScreenSpaceReflectionBuffer.Blit(BuiltinRenderTextureType.ResolvedDepth, SSR_HierarchicalDepth_RT);
for (int i = 1; i < HiZ_MaxLevel; ++i)
{
ScreenSpaceReflectionBuffer.SetGlobalInt(SSR_HiZ_PrevDepthLevel_ID, i - 1);
ScreenSpaceReflectionBuffer.SetRenderTarget(SSR_HierarchicalDepth_BackUp_RT, i);
ScreenSpaceReflectionBuffer.DrawMesh(GraphicsUtility.mesh, Matrix4x4.identity, StochasticScreenSpaceReflectionMaterial, 0, RenderPass_HiZ_Depth);
ScreenSpaceReflectionBuffer.CopyTexture(SSR_HierarchicalDepth_BackUp_RT, 0, i, SSR_HierarchicalDepth_RT, 0, i);
}
ScreenSpaceReflectionBuffer.SetGlobalTexture(SSR_HierarchicalDepth_ID, SSR_HierarchicalDepth_RT);
//////Set SceneColorRT//////
ScreenSpaceReflectionBuffer.SetGlobalTexture(SSR_SceneColor_ID, SSR_SceneColor_RT);
ScreenSpaceReflectionBuffer.CopyTexture(BuiltinRenderTextureType.CameraTarget, SSR_SceneColor_RT);
//////RayCasting//////
ScreenSpaceReflectionBuffer.SetGlobalTexture(SSR_Trace_ID, SSR_TraceMask_RT[0]);
ScreenSpaceReflectionBuffer.SetGlobalTexture(SSR_Mask_ID, SSR_TraceMask_RT[1]);
if (TraceMethod == TraceApprox.HiZTrace)
{
ScreenSpaceReflectionBuffer.BlitMRT(SSR_TraceMask_ID, SSR_TraceMask_RT[0], StochasticScreenSpaceReflectionMaterial, (RayNums > 1) ? RenderPass_HiZ3D_MultiSpp : RenderPass_HiZ3D_SingelSpp);
}
else
{
ScreenSpaceReflectionBuffer.BlitMRT(SSR_TraceMask_ID, SSR_TraceMask_RT[0], StochasticScreenSpaceReflectionMaterial, (RayNums > 1) ? RenderPass_Linear2D_MultiSPP : RenderPass_Linear2D_SingelSPP);
}
//////Spatial filter//////
ScreenSpaceReflectionBuffer.SetGlobalTexture(SSR_Spatial_ID, SSR_Spatial_RT);
ScreenSpaceReflectionBuffer.BlitSRT(SSR_Spatial_RT, StochasticScreenSpaceReflectionMaterial, (RayNums > 1) ? RenderPass_Spatiofilter_MultiSPP : RenderPass_Spatiofilter_SingleSPP);
ScreenSpaceReflectionBuffer.CopyTexture(SSR_Spatial_RT, SSR_TemporalCurr_RT);
//////Temporal filter//////
ScreenSpaceReflectionBuffer.SetGlobalTexture(SSR_TemporalPrev_ID, SSR_TemporalPrev_RT);
ScreenSpaceReflectionBuffer.SetGlobalTexture(SSR_TemporalCurr_ID, SSR_TemporalCurr_RT);
ScreenSpaceReflectionBuffer.BlitSRT(SSR_TemporalCurr_RT, StochasticScreenSpaceReflectionMaterial, (RayNums > 1) ? RenderPass_Temporalfilter_MultiSpp : RenderPass_Temporalfilter_SingleSPP);
ScreenSpaceReflectionBuffer.CopyTexture(SSR_TemporalCurr_RT, SSR_TemporalPrev_RT);
//////Combien Reflection//////
ScreenSpaceReflectionBuffer.SetGlobalTexture(SSR_CombineScene_ID, SSR_CombineScene_RT);
#if UNITY_EDITOR
ScreenSpaceReflectionBuffer.BlitSRT(SSR_CombineScene_RT, BuiltinRenderTextureType.CameraTarget, StochasticScreenSpaceReflectionMaterial, (int)DeBugPass);
#else
ScreenSpaceReflectionBuffer.BlitSRT(SSR_CombineScene_RT, BuiltinRenderTextureType.CameraTarget, StochasticScreenSpaceReflectionMaterial, 9);
#endif
//////Set Last Frame ViewProjection//////
SSR_Prev_ViewProjectionMatrix = SSR_ViewProjectionMatrix;
}
private void ReleaseSSRBuffer()
{
RenderTexture.ReleaseTemporary(SSR_HierarchicalDepth_RT);
RenderTexture.ReleaseTemporary(SSR_SceneColor_RT);
RenderTexture.ReleaseTemporary(SSR_TraceMask_RT[0]);
RenderTexture.ReleaseTemporary(SSR_TraceMask_RT[1]);
RenderTexture.ReleaseTemporary(SSR_Spatial_RT);
RenderTexture.ReleaseTemporary(SSR_TemporalPrev_RT);
RenderTexture.ReleaseTemporary(SSR_TemporalCurr_RT);
RenderTexture.ReleaseTemporary(SSR_CombineScene_RT);
if (ScreenSpaceReflectionBuffer != null)
{
ScreenSpaceReflectionBuffer.Dispose();
}
}
