tree ba2d1c7766708c53a7a416a03affd9d42179ad4c
parent a6d0fce00c2c52555abe2d79630382f6a5193df7
author Stephen White <senorblanco@chromium.org> 1716986870 +0000
committer Dawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com> 1716986870 +0000

OpenGLES: baseVertex, baseInstance workaround.

Use the Tint shader workaround to add baseVertex to gl_BaseVertex.
Offset the pointer passed to glVertexAttrib[I]Pointer() by baseVertex
or firstInstance, depending on buffer step mode.
Split the BaseVertex end2end test into two, since negative BaseVertex
is problematic on some platforms.
Remove all the other codepaths; always use emulation for now.
Remove all dependencies on the GL_ANGLE_base_vertex_base_instance extension.

Change-Id: I8965c983ccd5588af28ba88b8e1d0d519b4422cc
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/190460
Commit-Queue: Stephen White <senorblanco@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>