This patch adds a toggle to enable/disable workgroup memory
initialization with OpConstantNull according to the Vulkan extension
VK_KHR_zero_initialize_workgroup_memory. This toggle is by default
enabled when VK_KHR_zero_initialize_workgroup_memory is supported by
the Vulkan driver.
BUG=dawn:1302
TEST=dawn_end2end_tests
Change-Id: Ie04484c2d0944ead082bd22a436b1c52bc7d93bb
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/82400
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Jiawei Shao <jiawei.shao@intel.com>
Although the error rate of timestamp tick->ns conversion is very small
(3e-5), some profiling scenarios, such as CPU/GPU timestamp calibration
on Windows, require absolutely accurate timestamps.
Add new toggle to resolve timestamps to ticks for those cases where zero
error is required.
Add an end2end test for GPU timestamp calibration on D3D12 backend.
Disable timestamp period calculation on Device when the
DisableTimestampQueryConversion is enabled.
Bug: dawn:1305
Change-Id: I31ee6b4c1686d5dd2ac29ccb0bd398e650481c26
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/81023
Reviewed-by: Shrek Shao <shrekshao@google.com>
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Austin Eng <enga@chromium.org>