steve-lunarg ccb076ac9b HLSL: allow non-vec3 tessellation coordinate declarations ...

HLSL requires vec2 tessellation coordinate declarations in some cases
(e.g, isoline topology), where SPIR-V requires the TessCoord qualified
builtin to be a vec3 in all cases.  This alters the IO form of the
variable to be a vec3, which will be copied to the shader's declared
type if needed.  This is not a validation; the shader type must be correct.

2017-04-05 11:03:02 -06:00

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