S5135-Christoph-Kubisch-and-Pierre-Boudier
S5135-Christoph-Kubisch-and-Pierre-Boudier
S5135-Christoph-Kubisch-and-Pierre-Boudier
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RESULTS VIA READBACKUse dedicated buffers for readbackOne for GPU processing only (ensures best memory type used)N for readbacks (for example 4 to avoid sync points)glCopyNamedBufferSubData (gpuresult, readbacks[ frame % N ]...)Readback could be mapped persistently via GL_ARB_buffer_storageIdeally delay access of readback for a few framesAvoids need for synchronization, but can introduce visible artefactsReadback older frames to give CPU additional knowledge, but use GPUindirect methods for rendering38
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