On Monday, March 14, 2016 3:00:06 PM PDT Kenneth Graunke wrote: > Thanks to James Legg for finding this! > > From the ARB_tessellation_shader spec: > "The number of isolines generated is derived from the first outer > tessellation level; the number of segments in each isoline is > derived from the second outer tessellation level." > > According to the PRM, "TF.LineDensity determines # lines" while > "TF.LineDetail determines # segments". Line Density is stored at > DWord 6, while Line Detail is at DWord 7. So, they're not reversed > like they are for triangles and quads.
I forgot to add this to the commit message:
Fixes Piglit's spec/arb_tessellation_shader/execution/isoline,
and about 24 dEQP isoline tests (with GL_EXT_tessellation_shader
hacked on - it's not normally enabled).
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