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Marek Working Towards Even Lower SGPR Register Usage
A set of 13 patches were posted on Saturday by Marek for reducing user SGPR register usage. When using merged tessellation and geometry shader with 64-bit pointers, SGPR register use drops from 18 to 14 but with 32-bit pointers drops from 11 to 6. Other combinations are also saving a few registers. This patch series also happens to be a prerequisite for vertex buffer object (VBO) descriptors in user SGPRs.
All the details via this patch series.