tree 8e72baa894d83c1e26bf067014abe10dc4240f6f
parent 20ba9991499b808cf6d3d36b888088591fc0989c
author Ken Russell <kbr@chromium.org> 1784327076 -0700
committer angle-scoped@luci-project-accounts.iam.gserviceaccount.com <angle-scoped@luci-project-accounts.iam.gserviceaccount.com> 1784335578 -0700

Reland "GL: Limit declared vertex output varying components"

This reverts commit 3cf1a6c74785246ed0c29f58816632e05d7d6616.

Add a workaround which, when enabled, tracks the number of output
components from the vertex shader and fails the compile if there's an
attempt to exceed a specific limit (1024).

Relative to the original commit, apply a much higher compile time
limit which is unlikely to be reached by any test or real-world
application, and apply it to all context types, not just WebGL's.

Apply this workaround on Imagination's PowerVR OpenGL ES drivers to
work around a bug in the driver's shader compiler.

Co-authored with Gemini.

Test: angle_end2end_tests \
  --gtest_filter=GLSLValidationTest_ES3_LimitOutputVaryings.\
  TooManyDeclaredVertexOutputComponents
TAG=agy
CONV=8ed05bff-eb25-4de9-92b8-d097e4c0abae

Bug: chromium:529991907
Change-Id: I79d0bd117d6e0d6412011d361183484f088243e6
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/8114814
Commit-Queue: Kenneth Russell <kbr@chromium.org>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>