kc3-lang/angle

2020-11-18T22:03:22

Vulkan: Delay defining D/S content to endRenderPass Take the following situation: 1. Start RP with D/S undefined: loadOp = DONT_CARE, storeOp = STORE * At this point, onDepthStencilWrite calls image->onWrite, setting depth/stencil contents defined. 2. At endRP, observe depth/stencil is not used: storeOp = DONT_CARE 3. Start another RP with D/S: loadOp = LOAD, storeOp = STORE Because the call to image->onWrite was done at startRP, the contents of the depth/stencil image is marked as defined, and the next render pass is loading these data. This change moves image->onWrite to endRenderPass, and only calls it if storeOp = STORE, taking advantage of all the opportunistic optimizations that try to set storeOp to another value. Bug: angleproject:4836 Change-Id: I9858e5caa6b1f67f841a5c6356e66927356ef469 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2548319 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Charlie Lao <cclao@google.com> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>