Command buffer for Post Camera Effects?

Hi there,

Im used to do camera effects using OnRenderImage but i saw some code with commandBuffer,
i cant get the idea of it, im trying to do a simple downsample of my current camera render and it wont work at all... looking at the Frame Debugger i cant see the image effect being applied but in game and editor nothing change.

my code goes like:

OnPostRender
- new Command Buffer
- GetTemproraryRT of full screen
- Create a GetTemporary half Size of screen
- blit the Full Screen temporary to the Half Size screen temporary
- Remove Full Screen temporary
- Take the half Screen downsample RT and put it on another Full Screen Temporary
- blit the downsample full screen into BuiltinRenderTextureType.CurrentActive
------->_buffer.Blit(FinalTextureID, BuiltinRenderTextureType.CurrentActive, _bloomMaterial);
- AddCommandBuffer

That works only inside the frame debugger.
i tried removing the last blit and use SetGlobalTexture with no lucky.

What im missing here?
Help!

 

I'm not a professional, but maybe you create a new commandBuffer each time before the previous one works.
Look closer at the params in AddCommandBuffer.

 

im still trying and looks like if i want to use CommandBuffer as a Post Camera Effect i also need to use OnRenderImage or setup the camera differently. At the end is more expensive to use Command buffer for full screen camera effect.

I remove all of it and went to the only image effect technique with best optimization results.

im doing something wrong?