Making it easier to work with shaders https://git.yummers.dev/slang.git/atom?h=master 2017-07-19T17:12:58+00:00 2017-07-19T17:12:58+00:00 Tim Foley tfoley@nvidia.com 2017-07-19T17:10:17+00:00 urn:sha1:55a29042a2826f26272c9e1b65cd3745bad3ee31 Fixes #122 - In cases with an explicit mip level being specified, there was a mistake in how the argument for setting the mip level in the GLSL code was constructed that led to a parse error in GLSL - Also, that argument is a `uint` in HLSL and an `int` in GLSL, so an explicit cast was needed - The GLSL functions here seem to require a newer GLSL (at least higher than `420`), so I had to add in a capability for builtins to specify a required GLSL version. For now I made these ones require `450`. - Added a test case to confirm that our lowering works (for some definition of "works")