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Endemoniada

Format for SSAO and Blur ?

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Hi guys,

 

What format should I use when rendering and blurring SSAO ? I only need one channel. I've been using DXGI_FORMAT_R8G8B8A8_UNORM but I'm wondering if I'd be better off using DXGI_FORMAT_R32_FLOAT or DXGI_FORMAT_R16_FLOAT or perhaps DXGI_FORMAT_R8_UNORM.

 

My main concern is compatibility and speed, not so much memory usage.

 

Thanks.

 

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My main concern is compatibility and speed, not so much memory usage.


When dealing with the GPU, memory is speed. Moving memory to and from the GPU can easily be a larger bottleneck than how much data you can crunch. You should also consider making your SSAO render target smaller than the screen resolution. Edited by HappyCoder

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