Commit 2450d8dd93e468c0285b0987001be415359fe74a
2019-01-11T14:41:04
Vulkan: Squash Vertex Pipeline info. Instead of using 8 bytes per vertex we can reduce the space used for the divisor to 8 bytes. For larger values than 255 we can emulate the divisor by unrolling the draw call. We will likely need to do this in any case for instanced draws when the instancing extension isn't available. The tighter packing will allow for us to move the viewport and scissor back into the pipeline description. It seems this is much faster than using dynamic state. Every state change that would pull in a new Pipeline would need the viewport and scissor re-applied. It seems these driver calls are costly. Does not improve perf significantly but enables future improvements. Bug: angleproject:3013 Change-Id: I1a41c3acadc6fbd47c7a7b961c706e82f78de936 Reviewed-on: https://chromium-review.googlesource.com/c/1390358 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Yuly Novikov <ynovikov@chromium.org>