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d8f088e0
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2023-08-14T11:07:24
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GL: Remove parallel compile/link without driver support
This feature was practically disabled everywhere due to various bugs,
and is complicating the code. In effect, the code was always spawning a
thread for the compilation and link jobs, immediately fail it (due to a
workaround), then do the job when compile/link is resolved (much closer
to draw time). This leads to bad user experience, but also is racy
because the shaders may get recompiled in the meantime and there is
little the GL backend could do to stop that (efficiently).
After this change, parallel compile/link
is either done by the driver (if supported), or it isn't done.
This is a partial revert of a100d8f471f79b9f88d387164992cc5bd9c6ee9f.
Bug: angleproject:3031
Bug: chromium:922936
Bug: chromium:1184692
Bug: chromium:1202928
Change-Id: I6348bee3249ccb3828bb98ac2a69dc7d305f821c
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4774785
Reviewed-by: Geoff Lang <geofflang@chromium.org>
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