angle/include
Charlie Lao ea5804842b Vulkan: Add feature flag to prefer CPU copy instead of staged update
For ARM GPU, use GPU to do buffer to buffer copy has performance penalty
due to potential bubble in the vertex pipeline. This CL adds a feature
flag preferCPUForBufferDataSubData so that we can enable this behavior
for ARM GPUs.

This CL also tracks if GPU has referenced this BufferVk's storage since
it got new storage. Due to sub-allocation, we may get a new sub-range of
the same BufferHelper object when allocating new storage. But we
currently do not have a way to track GPU progress of the sub-range of a
buffer. So we will end up using BufferHelper's queueSerial to decide if
it is still GPU busy or not. This CL adds mHasBeenReferencedByGPU
boolean variable that will set to false when we got a new allocation and
set to true as soon as buffer is been referenced by any GPU command. We
use this to avoid checking queueSerial if it never been referenced by
GPU. This is a temporary workaround for the bug, the full fix is tracked
by https://issuetracker.google.com/201826021

Bug: b/200067929
Change-Id: I231fb0a678b0165a2ce1775d0aa4dbe7512fb4a8
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3183398
Commit-Queue: Charlie Lao <cclao@google.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Tim Van Patten <timvp@google.com>
2021-10-13 19:43:36 +00:00
..
CL
EGL
GLES
GLES2
GLES3
GLSLANG
KHR
WGL
platform
vulkan
angle_cl.h
angle_gl.h
angle_windowsstore.h
export.h