Jiawei Shao 80f927d763 Implement buffer lazy initialization before writeBuffer ... This patch implements buffer lazy initialization before writeBuffer(): if the buffer is not initialized and writeBuffer() doesn't cover the whole buffer, the buffer will be cleared to 0, otherwise the buffer shouldn't be cleared. This patch also introduces a toggle LazyClearBufferOnFirstUse for the development of buffer lazy initialization: before buffer lazy initialization being completely supported, all the related code will only be enabled behind this toggle to prevent the buffers with valid content being unexpectedly cleared. BUG=dawn:414 TEST=dawn_end2end_tests Change-Id: I99a2aa98ca4b9b21d69c6b32080afb525e2c4ad3 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/24041 Commit-Queue: Jiawei Shao <jiawei.shao@intel.com> Reviewed-by: Corentin Wallez <cwallez@chromium.org>		2020-07-06 08:24:30 +00:00
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DeviceNull.cpp	Implement buffer lazy initialization before writeBuffer	2020-07-06 08:24:30 +00:00
DeviceNull.h	Null: Make Increment/DecrementMemoryUsage use uint64_t.	2020-06-29 20:03:16 +00:00
NullBackend.cpp	Make dawn_native public headers and dawn_wsi use webgpu.h	2019-10-24 23:55:37 +00:00