kc3-lang/angle

2022-06-14T11:49:15

Support BGRX8 for framebuffer blits For WebGL content, Chrome usually needs to perform MSAA resolve on the WebGL buffer before compositing via a blit. On ChromeOS, this read buffer is usually in BGRX as it is the native format for the display hardware which eventually gets coerced to GL_BGRX8_ANGLEX in ANGLE. Unfortunately, ANGLE claims limited support for this format, so the blit subsequently fails, resulting in a black screen on some WebGL 1 apps. This CL fixes a validation error and marks BGRX8 as filterable so that ANGLE's blit framebuffer implementation can actually operate on GL_GBRX8_ANGLEX targets. Bug: b/233238923 Change-Id: I378c177c9770d98a8fdb8284335ada66f7907a69 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3703621 Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Brian Ho <hob@chromium.org>