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b3cbfd55
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2021-07-07T12:31:57
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Fix multiple end2end crashes in direct-to-MSL compiler.
This set of changes:
- Adds a single place (CompilerMtl::useDirectToMSLCompiler) where the
direct-to-MSL compiler can be enabled, still at compile time rather
than run time. It is still disabled by default.
- Initializes MTLWaitableCompileEventImpl::mShader, without which all
shader compiles crash.
- Fixes a mismatch of the ANGLERasterizerDisabled variable name in
the generated MSL.
- Removes the transform feedback bindings as an argument to the
vertex shader's main0(). Transform feedback support needs to be
reimplemented in this compiler backend.
- Added an option to the DriverUniform class to emit as either an
interface block or a struct. The direct-to-MSL backend assumes it
is a struct.
- Disable variable reference validation when referencing either
sample mask or rasterizer discard functionality in the shader.
- Disable struct usage validation when inserting references to
ANGLE_TextureEnv. This occurs during pipeline rewriting and it's
infeasible to disable it at that point, so disable it during
pipeline rewriting - which means it's disabled for all shaders.
- For angle_end2end_tests, disable the file API hooking which
disables the Metal shader cache. This speeds up the tests
significantly - by roughly a factor of 5.
With these changes, several hundred angle_end2end_tests run without
any assertion failures, though still with many test failures. The next
crash is in:
GLSLTest.NamelessScopedStructs/ES2_Metal
and will likely require a larger bug fix, or more changes to be
upstreamed from WebKit's repository.
Bug: angleproject:5505
Change-Id: Ia1ea9a13867f00035d4aeccf907fd032255588e3
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3010486
Commit-Queue: Kenneth Russell <kbr@chromium.org>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
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