Reduce allocations #12
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(cherry picked from commit 1045a8e)
| { | ||
| ExecuteCommand(context, cmd); | ||
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| // Test for Descriptor changes | ||
| var descriptor = GetDescriptor(camera); | ||
| if(!descriptor.Equals(m_PreviousDescriptor)) | ||
| if(!DescriptorEquality(descriptor, m_PreviousDescriptor)) |
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This relied on default value type equality comparison which generates about 80 bytes per call
| m_identifier ??= $"Mirror {gameObject.GetInstanceID()}"; | ||
| // Profiling command | ||
| CommandBuffer cmd = CommandBufferPool.Get($"Mirror {gameObject.GetInstanceID()}"); | ||
| using (new ProfilingSample(cmd, $"Mirror {gameObject.GetInstanceID()}")) | ||
| CommandBuffer cmd = CommandBufferPool.Get(m_identifier); | ||
| using (new ProfilingSample(cmd, m_identifier)) |
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Identifier is a constant, string interpolation is never cached so might as well do it manually.
Something you might want to take a look at is the fact that pooled commandbuffers cannot be reused when profiling, perhaps related to this issue on the unity tracker - so right now the profiler will spit errors.
Deep profile works as expected though, not sure what's up with that.
We could always omit the command from the sample ?
| @@ -233,6 +246,7 @@ void BeginCameraRendering(ScriptableRenderContext context, Camera camera) | |||
| SetShaderUniforms(context, m_RenderTexture, cmd); | |||
| } | |||
| ExecuteCommand(context, cmd); | |||
| CommandBufferPool.Release(cmd); | |||
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Official logic from unity does release pooled commands, now I'm not very familiar with this so feel free to investigate further if you think that's not right
| @@ -305,16 +319,16 @@ Vector4 GetMirrorPlane(Camera camera) | |||
| #region Output | |||
| void SetShaderUniforms(ScriptableRenderContext context, RenderTexture renderTexture, CommandBuffer cmd) | |||
| { | |||
| var block = new MaterialPropertyBlock(); | |||
| var block = renderers.Count == 0 ? null : new MaterialPropertyBlock(); | |||
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Blocks are not required when no renderers are there to feed them to, 'kind of ugly but I didn't want to significantly change your logic. Feel free to change into something less hacky.
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