tree 48eb7a8c22cccdf97d5ebcb04e66574057e6bece
parent 7dec2d1c56894da99ab229dbdf627d121b9c3379
author Yan, Shaobo <shaobo.yan@intel.com> 1564449679 +0000
committer Commit Bot service account <commit-bot@chromium.org> 1564449679 +0000

Dynamic Buffer Offset : OpenGL Backend

In a typical graphics application it is a common usage to update some uniforms once per draw,
and such uniforms include the word positions, orientations, and so on. In the current state of
WebGPU, this means that for each draw call we have to create a new bind group to set the right
uniform values. Bind group creation is expected to be more expensive than
recording draws because a memory allocation is required.

The functionality of dynamic buffer offset is to reduce the number of bind groups that need to
be created.

The patch implements dynamic buffer offset on OpenGL backend using glBindBufferRange and adds
validation to check whether visibility of resources are none.

Bug=dawn:55

Change-Id: I77e10a9677d1737f377301ee89e29d904c91c298
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/9540
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Shaobo Yan <shaobo.yan@intel.com>