tree ae54b718988f3e67a241e9fc5019ecbb7018ba82
parent b98f0faa4d0ba55fcde794fe0e6fcb069e43d8c3
author Corentin Wallez <cwallez@chromium.org> 1564409466 +0000
committer Commit Bot service account <commit-bot@chromium.org> 1564409466 +0000

Metal: Pack vertex buffers just after the pipeline layout

WebGPU have a 2D pipeline layout plus a vertex buffer table while Metal
has a single vertex buffer table that contains everything (including
uniform and storage buffers). Previously the space for vertex buffers
was statically allocated in that table which made the last vertex buffer
go out of bound of the Metal vertex buffer table.

This fixes the issue by packing all the vertex buffers that are used
right after the vertex buffers used by the bind groups. This is a
drive-by fix found while looking at reserving Metal vertex buffer 30 to
contain the shader storage buffer lengths.

BUG=dawn:195

Change-Id: If5c67bbc0d15c976793ef43889e50e4a360217d7
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/9387
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>