Depth buffer access

Development Programming & Scripting
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1

Hi,

Is there a way to get the last frame’s depth buffer on the CPU without incurring a significant cost and creating an unneeded sync point?

2

Steps to Reproduce

3

Hello,

Thank you for reaching out.

I’ve been assigned this issue, and we will be looking into your question about GPU Readback.

4

Hello,

These two tickets are about reading back Depth/Stencil textures specifically:

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These tickets provide more information about reading back textures from the GPU in general:

Information about “FRHIGPUTextureReadback”, and references to example usage:

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More information about “FRHIGPUTextureReadback”:

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Information about individual pixel access:

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Information about texture readbacks every frame:

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Discussion of an issue causing readback failure, in the context of “FRHIGPUTextureReadback”:

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Multi-threaded usage of “FRHIGPUTextureReadback” and resultant pixel data:

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Please let us know if this helps.