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Hash : fe28a429
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Date : 2022-03-30T15:34:49
Vulkan: Create buffer for vertex array if robust enabled If robust access is enabled (i.e., chrome), we want to ensure vulkan driver never access beyond that OpenGL buffer boundary. But with suballocation from BufferPool, we are using the same VkBuffer for all suballocations from the same BufferBlock. this combined with the fact that there is no size information in the vkCmdBindVertexBuffers, it means vulkan driver can not properly ensure vertex access not go beyond the subrange. It can only guarantee not access beyond the entire VkBuffer size. This CL creates a dedicated vkBuffer object and bind it to the suballocation of the vkDeviceMemory so that vulkan driver will see the exact range of the subrange instead of entire buffer. Since we may allocated more memory than actual requested size and the extra paddings are not zero filled , user size is used to create this vkBuffer. This is only enabled when robust access is enabled. This CL also ported webgl conformance test out-of-bounds-index-buffers.html and out-of-bounds-array-buffers.html to end2end test. Bug: chromium:1310038 Change-Id: I3499ae600028149b1039082e5011232b3e4e5e80 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3553940 Reviewed-by: Yuxin Hu <yuxinhu@google.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Charlie Lao <cclao@google.com>
