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authorJason Ekstrand <[email protected]>2015-01-22 13:46:44 -0800
committerJason Ekstrand <[email protected]>2015-01-22 15:19:13 -0800
commit7de8a3e13efe1c3eede531737f6780d388152355 (patch)
tree10bf1dacc17708cadbe6dc3999ee585775a0f860 /doxygen
parent8751734613d3476f46ef1efe119a6892b3ecfa02 (diff)
i965/emit: Do the sampler index adjustment directly in header.0.3
Prior to this commit, the adjust_sampler_state_pointer function took an extra register that it could use as scratch space. The usual candidate was the destination of the sampler instruction. However, if that register ever aliased anything important such as the sampler index, this would scratch all over important data. Fortunately, the calculation is such that we can just do it in place and we don't need the scratch space at all. Reviewed-by: Chris Forbes <[email protected]>
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