Commit Graph

2717 Commits

Author SHA1 Message Date
David G Yu
e5ace59631
Merge pull request #1057 from barfowl/far_boundary_box_spline
Correction to minor changes to BoxSplineTri boundary computation
2019-02-06 22:32:02 -08:00
barry
aa46fd3d6d Added UI options to examples/glFVarViewer consistent with glViewer:
- added the smooth corner, single crease and inf-sharp patch options
    - added a missing shape illustrating inf-sharp patches
2019-02-06 18:45:02 -08:00
barry
479a297bc6 Correction to recent changes to boundary weights of box-spline triangles:
- fixed corner vertex cases (two boundary edges) in both Far and Osd
2019-02-06 18:30:26 -08:00
David G Yu
f83adf942e
Merge pull request #1056 from barfowl/examples_gl
Several minor updates to the GL examples
2019-02-06 00:03:50 -08:00
Barry Fowler
7b3a471cfb
Merge pull request #1055 from davidgyu/box_spline_tri_boundary_fix
Thanks, David
2019-02-05 18:40:00 -08:00
barry
5595255858 Several minor updates to the GL examples:
- addition of new shapes -- mainly Loop and Bilinear
    - removal of redundant shapes and those not suited to a particular example
    - enforced consistent "Patch Type" coloring where provided
    - enforced consistent command line usage for common options and Obj input
    - enforced consistent default settings on initialization
    - added errors and/or assertions where legitimate limitations remain
    - improved error handling (OSD errors not being flushed before termination)
2019-02-05 17:22:10 -08:00
David G Yu
35065d3a2f
Merge pull request #1054 from barfowl/far_inf_sharp_darts
Fix cracks between triangular Gregory patches at inf-sharp darts
2019-02-05 13:17:44 -08:00
David G Yu
d468aca0a2
Merge pull request #1053 from barfowl/far_patch_is_adaptive
Fixed Far::PatchDescriptor::IsAdaptive() for legacy Gregory
2019-02-05 13:17:28 -08:00
David G Yu
abb8af32c5 Minor changes to BoxSplineTri boundary computation
The computation to adjust patch evaluation weights
for box spline triangle patches to account for boundaries
has been updated to use simple conditional logic instead
of index indirection tables. This results in better register
resource usage for some shader compiler implementations.
Previously, these methods could fail to compile on some
systems.
2019-02-05 12:57:41 -08:00
barry
b83dd92757 Fix cracks between triangular Gregory patches along inf-sharp dart edges:
- corrected regular vs irregular assignment of the quartic mid-edge point
2019-02-04 11:19:24 -08:00
barry
de29bc897f Fix Far::PatchDescriptor::IsAdaptive() for legacy Gregory patches:
- determine based on patch type ID rather than control point count
2019-02-04 11:04:26 -08:00
David G Yu
480afc0189
Merge pull request #1052 from barfowl/far_tri_ptex_adjacency
Removed triangular restriction in Far Ptex adjacency query
2019-02-03 09:52:22 -08:00
David G Yu
3ba6a1a11c
Merge pull request #1051 from barfowl/examples_headers
Enforced consistent header file inclusion in source for examples
2019-01-31 15:15:44 -08:00
barry
20dcd24b9d Updated all example source for consistent inclusion of header files:
- prepend the opensubdiv directory to all library headers included
    - removed the opensubdiv directory from all declared include paths
2019-01-31 10:49:02 -08:00
David G Yu
e4375aea9e
Merge pull request #1048 from barfowl/glsl_adaptive_tess_levels
Minor refactoring of GLSL functions to compute adaptive tess levels
2019-01-31 00:54:06 -08:00
barry
d1f601ef9b Enabled Far::PtexIndices::GetAdjacency() for triangular refinement 2019-01-30 20:55:18 -08:00
Barry Fowler
0c2f3ee884
Merge pull request #1050 from davidgyu/loop_patches_eval_limit 2019-01-30 20:27:12 -08:00
Barry Fowler
cbbfc5b64b
Merge pull request #1049 from davidgyu/glsl_gregory_tri_varying_fix 2019-01-30 20:10:11 -08:00
barry
e8fdec9f88 Made use of newer GLSL adaptive tess functions in patch shaders:
- replaced use of "LimitPoints" functions in all patch shaders
    - removed the unreleased "LimitPointsTriangle" functions
    - added internal tess functions for processing patch boundaries
    - updated Bezier quad and tri tess evaluation to use boundary functions
2019-01-30 10:25:04 -08:00
barry
e8859cac85 Added GLSL adaptive tess functions to reflect associated patch types:
- renamed core "LimitPoints" functions to reflect the patch type (Bezier)
    - overloaded new functions with the additionally computed tess level
    - preserved stubs of all "LimitPoints" functions for compatibility
2019-01-30 10:12:15 -08:00
David G Yu
62ae245b9a
Merge pull request #1047 from barfowl/far_adapt_refine_options
New method to determine adaptive refinement options from choices for patches
2019-01-29 09:29:46 -08:00
David G Yu
c13a6ba2e4
Merge pull request #1046 from barfowl/glsl_bezier_normal_derivs
Added normal derivatives to GLSL Bezier triangle evaluation
2019-01-29 09:29:28 -08:00
barry
673088637b Added public method to derive adaptive refinement options from patch options:
- PatchTableFactory::Options method returns TopologyRefiner::AdaptiveOptions
    - far/tutorial_6 and 9 updated to illustrate use of the new method
2019-01-28 18:02:12 -08:00
barry
73f4ab5db7 Added normal derivatives to GLSL Bezier triangle evaluation:
- added alternate intermediate calculations for normal derivatives
    - use normal derivates to resolve a degenerate normal
2019-01-28 10:20:31 -08:00
David G Yu
c37bb51736 Fixed glViewer and glStencilViewer arg parsing
- Fixed an indexing bug in command line argument processing.
- Changed glStencilViewer mesh initialization to be more consistent
with other viewers.
2019-01-25 19:40:43 -08:00
David G Yu
6ba1d9fcc2 Updated glEvalLimit viewer for Loop patches
- Removed restriction on adaptive refinement for Loop meshes
- Updated internal class used to manage eval locations for triangle patches
- Added command line options to specifiy the Scheme for .obj input files
2019-01-25 19:31:26 -08:00
David G Yu
0545056271 Fixed varying interp for gregory triangle patches
The point indices used to interpolate varying data should
be the points at the outer corners of the patch.
2019-01-25 19:15:45 -08:00
David G Yu
9487545ccd
Merge pull request #1044 from barfowl/far_quartic_gregory
Extended triangular Gregory patch to full quartic
2019-01-24 14:58:33 -08:00
barry
a0e72d80c3 Changed Gregory triangle from cubic/quartic hyrid to full quartic:
- changed Far::PatchDescriptor size for GREGORY_TRIANGLE to 18
    - modified Far::LoopPatchBuilder to construct full quartic Gregory patch
    - fixed Far::LoopPatchBuilder bug related to face points near boundaries
    - updated Far patch basis evaluation for Gregory and Bezier triangles
    - updated Osd patch basis evaluation to match Far
    - updated Osd GLSL patch size for Gregory triangle to 18
    - modified Osd GLSL Gregory triangle eval and tess settings for quartic
2019-01-24 12:56:09 -08:00
David G Yu
ee6097b399
Merge pull request #1043 from barfowl/glsl_quartic_bezier
Changed GLSL conversion of regular Loop patch to quartic Bezier
2019-01-22 12:37:37 -08:00
barry
7ab065a0c4 Changed GLSL conversion of regular Loop patch to quartic Bezier:
- updated sizes for the Box-spline triangle shader to generate 15 points
    - updated conversion of Box-spline from hybrid Bezier to fully quartic
    - added resolution of degenerate normal to Bezier triangle evaluation
    - updated hybrid Gregory triangle conversion to quartic Bezier
    - updated adaptive tessellation of Bezier triangle for quartic boundaries
2019-01-22 09:48:19 -08:00
Barry Fowler
1c35aa435a
Merge pull request #1041 from davidgyu/loop_patches_gl_drawing
Thanks, David!
2019-01-19 14:13:12 -08:00
David G Yu
3757eb120b Updated glStencilViewer for Loop patches
Also, changed sample initialization for triangle refinement to keep sample
locations within base triangles.
2019-01-18 18:21:13 -08:00
David G Yu
06f4a60939 Updated glViewer and glFVarViewer for Loop patches
- Removed Catmark restrictions in the application code and shaders
- Added command line options to specifiy the Scheme for .obj input files
- Added support for Linear end-cap approximation
- Updated GUI labels for end-cap types, i.e. "Linear" instead of "Bilinear"
  and "Regular" instead of "BSpline".
- Added new shading color to glViewer for "Patch Depth"
- Disabled screen-space and fractional tessellation by default
2019-01-18 18:20:21 -08:00
David G Yu
83486cddae Added GLSL support for drawing triangle patches
- Added GLSL patch shaders for BoxSplineTriangle and GregoryTriangle
  patches. These both convert to a hybrid Bezier patch for drawing
  similar to the basis conversion done for quad patches.
- Added evaluation of hybrid Bezier triangle patches and
  GregoryTriangle patches to the common shader source.
- Added OsdGetPatchIsTriangleRotated() to detect rotated triangles.
- Added OsdInterpolatePatchCoordTriangle() for eval of triangle patches.
- Added boundary point extrapolation for BoxSplineTriangle patches.
- Fixed boundary point extrapolation for unisolated BSpline patches.
- Added tess factor and tess evaluation location computation for
  triangle patches.
- Limit surface edge mid points for both quad and triangle patches
  are now computed directly.
2019-01-18 18:18:45 -08:00
David G Yu
494f45605f Moved GLSL tess factor code to separate file
Moved shader code which computes tessellation factors and
tessellation parameterization into a separate source file.
2019-01-18 18:17:38 -08:00
David G Yu
2ccd70fec3 Moved GLSL legacy shader code to separate file
Moved shader code used for evaluation of legacy gregory patches
to a separate source file along with macros which implement
simple linear face-varying interpolation.

These should not be used for new development, but are provided
for backward compatibility.
2019-01-18 18:15:43 -08:00
David G Yu
d855643b80 Fixed osd patch basis typos and macros 2019-01-18 18:14:00 -08:00
David G Yu
f25b7427f9
Merge pull request #1039 from barfowl/loop_regression_shapes
Added more regression shapes for Loop subdivision
2019-01-08 11:18:46 -08:00
Barry Fowler
e8ac8a81f8
Merge pull request #1038 from davidgyu/uniform_eval_limit_example
Thanks, David
2019-01-07 16:04:23 -08:00
barry
3c9673c447 Added more regression/shapes for Loop and updated a couple others:
- updated the edge-only and edge-corner shapes consistent with Catmark
    - moved the existing triangulated cube to loop_cube_asymmetric
    - added new loop_cube with symmetric triangulation and limit surface
    - added semi-sharp and inf-sharp variations of cube and icosahedron
    - added shapes with extra-ordinary interior and boundary vertices
    - added shapes with face-varying features similar to Catmark
2019-01-07 15:54:37 -08:00
David G Yu
ed97ce1b26 Updated glEvalLimitViewer for uniform refinement
Previously, the glEvalLimitViewer was hard coded to
use only adaptive refinement, but this change demostrates
how to evaluate patch locations on the linear patches
resulting from a uniform refinement.

By default, in a patch table created from a uniform refinement,
the patch indices for vertex patches account for base level indices,
while the patch indices for face-varying patches do not account for base
level indices.

This change also updates the example to set the patch table factory options
so that both kinds of patch indices account for base level indices.
2019-01-07 13:45:20 -08:00
David G Yu
bf38091ac3
Merge pull request #1037 from barfowl/far_stencil_table_ptr
Simplify the private PatchTable::StencilTableHandler class
2019-01-04 16:26:00 -08:00
barry
eb658d757b Removed unnecessary condition from new stencil table initialization method:
- existence of the StencilTable is now a pre-condition
2019-01-04 16:04:19 -08:00
David G Yu
c90c87d011
Merge pull request #1036 from barfowl/vtr_nonman_fvar_tag
Fix construction of face-varying patches around non-manifold vertices
2019-01-04 10:45:54 -08:00
barry
c42482e5c4 Modified initialization of non-manifold bit for face-varying tags:
- face-varying non-manifold status now OR'd with vertex non-manifold
2019-01-03 19:17:17 -08:00
David G Yu
fd78b69cdc
Merge pull request #1035 from barfowl/far_bilinear_patches
Patch construction and more regression shapes for Bilinear scheme
2018-12-21 16:51:56 -08:00
barry
42a0be5cb9 Patches and regression shapes for Bilinear scheme:
- Bilinear patches derived from non-quads now correctly created
    - added new regression/shapes for Bilinear (non-planar and non-quad)
2018-12-21 12:35:31 -08:00
David G Yu
16cbbe3fd4
Merge pull request #1034 from barfowl/far_tri_inf_sharp_edges
Fixed triangular patches at interior infinitely sharp edges
2018-12-21 11:40:03 -08:00
barry
808069c123 Fixed triangular patches with apex on an interior inf-sharp edge:
- test for presence of inf-sharp edges at corner not inf-sharpness
2018-12-20 11:46:03 -08:00