Commit 9364246f08d34a378252e517210b68e97282f764
2022-12-19T16:28:44
Metal: expose Metal backend only on supported GPUs. Query all the GPUs on the system during ANGLE's initialization, and do not expose the EGL_ANGLE_platform_angle_metal client extension unless all of them support the required GPU families or feature sets. Tested locally on a 2015 MacBook Pro with dual Intel Iris Pro and AMD Radeon R9 M370X GPUs. The AMD GPU supports Metal GPU family macOS 2, but the Intel GPU, only family macOS 1. With this change, Chrome properly falls back to using ANGLE's OpenGL backend when --use-angle=metal is specified, and renders correctly. Bug: chromium:1365598 Change-Id: I2c3533afe733e0d06d7755cae272bbd12aa9e676 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4117716 Reviewed-by: Kimmo Kinnunen <kkinnunen@apple.com> Reviewed-by: Gregg Tavares <gman@chromium.org> Commit-Queue: Kenneth Russell <kbr@chromium.org>