I'm on vacation for the next week, so in case anyone else wants to
finish off ARB_shading_language_420pack, here are the tests and
patches I've done so far.
They cover
- Swizzles on scalars
- .length() method of matrices and vectors
- gl_{Max,Min}ProgramTexelOffset built-in constants (needs a piglit test)
- Implicit conversion of return values
- Non-constant expression initializers of const variables
- and a GLSL spec clarification tacked on at the end
Thanks,
Matt
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