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Primitive restart fixed
SwiftShader wasn't correctly handling having no restart indices
in the index buffer while having primitive restart enabled. In
the WebGL 2 conformance tests, the reference image is also
computed while primitive restart is on, which means that
Context::drawElements() may modify the internal primitive type,
so indices must be adjusted to reflect that change, even if no
restart indices are present in the index buffer.
Fixes all WebGL 2 tests in:
all/deqp/functional/gles3/primitiverestart
Change-Id: I24f129e0f7bd42b5037b74617b48a32621440ddb
Reviewed-on: https://swiftshader-review.googlesource.com/16548
Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>