2 Commits

Author	SHA1	Message	Date
David G Yu	67cc2a3810	Irregular patch shader transition edges ... Updated the Gregory patch tessellation shaders to account for transition edges. Changed the implementation of OsdGetTessParameterizationTriangle() to take the input parametric location as a 3-component value. This allows the edge parameterization to be more numerically robust and consistent. Also, corrected some minor discrepancies between the various tessellation shader configurations.	2019-06-03 15:34:40 -07:00
David G Yu	cc6c9da070	Mtl implementation drawing triangle patches ... Updated Metal shaders to add support for drawing triangle patches. This matches the current GLSL implementation. - BoxSplineTriangle and GregoryTriangle patch shaders - tess factor and tess evalutation for triangle patches - improved adaptive tessellation code organization and function names - quartic Bezier triangle patch evaluation - OsdGetPatchIsTriangleRotated() function added - OsdInterpolatePatchCoordTriangle() function added	2019-05-30 00:47:50 -07:00