Author :
Shahbaz Youssefi
Date :
2020-10-10 22:58:41
Hash :68bd685a Message :Reland: "4 Vulkan content defined CLs."
Reland "Vulkan: Avoid content restore by detecting no-op stencil"
This relands commit 243d0f899e443cd931c78aba7489382dff79edbb.
Reland "Vulkan: Restore at the end of RP if write-after-invalidate"
This relands commit e5d52ac3b9a00656acdd912ee8cd62dd14784075.
Reland "Vulkan: Invalidate/restore depth/stencil separately."
This relands commit 61fa0878964a796f6d3b3c13bc3a3849403ecdbd.
Reland "Vulkan: Move content-defined tracking to ImageHelper"
This relands commit 2392e6b34c0ddfbfd7b4c3cb67323ba463e11a57.
Reason for revert: Caused crashes in Fuchsia x64 and on ARM.
Reland fixes content defined for external images.
Original CL message:
Content-defined tracking was done in render targets prior to this
change. This had multiple drawbacks:
- When a framebuffer attachment is changed (including the first time
it's set), it's unknown whether the contents of the attachment is
defined.
- Invalidate takes effect at the end of render pass, at which point the
render target objects may be gone. Attachment ImageHelpers are
however correctly tracked.
This change moves content-defined tracking to the ImageHelper itself,
and tracks it per subresource. ImageHelper::onWrite() now receives the
subresource that is being written, and marks it as having defined
content.
A future optimization can make use of this change to
ImageHelper::onWrite to track "dirty" subresources. This can lead to
the removal of unnecessary barriers when same-kind writes are done on
different subresources of the image. See http://anglebug.com/3347#c15
Bug: b/167275320
Bug: angleproject:4836
Bug: angleproject:5159
Change-Id: If5c1ae7152657fd7c94db7d55bea4fb9ddf835ba
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2464825
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>