From 17218ce6fe400816376bfd48444baa2d35cf7dc4 Mon Sep 17 00:00:00 2001
From: barry <barry.fowler@dreamworks.com>
Date: Tue, 14 May 2019 11:08:52 -0700
Subject: [PATCH] Fixed bug estimating Gregory face-point size for sharp corner
 patches

---
 opensubdiv/far/catmarkPatchBuilder.cpp | 2 ++
 opensubdiv/far/loopPatchBuilder.cpp    | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/opensubdiv/far/catmarkPatchBuilder.cpp b/opensubdiv/far/catmarkPatchBuilder.cpp
index fc1b8815..eeb2d056 100644
--- a/opensubdiv/far/catmarkPatchBuilder.cpp
+++ b/opensubdiv/far/catmarkPatchBuilder.cpp
@@ -1251,6 +1251,8 @@ GregoryConverter<REAL>::getIrregularFacePointSize(
     CornerTopology const & corner    = _corners[cIndexNear];
     CornerTopology const & adjCorner = _corners[cIndexFar];
 
+    if (corner.isSharp && adjCorner.isSharp) return 2;
+
     int thisSize = corner.isSharp
                  ? 6
                  : (1 + corner.ringPoints.GetSize());
diff --git a/opensubdiv/far/loopPatchBuilder.cpp b/opensubdiv/far/loopPatchBuilder.cpp
index ae10b910..20a8f96c 100644
--- a/opensubdiv/far/loopPatchBuilder.cpp
+++ b/opensubdiv/far/loopPatchBuilder.cpp
@@ -1281,6 +1281,8 @@ GregoryTriConverter<REAL>::getIrregularFacePointSize(
     CornerTopology const & nearCorner = _corners[cIndexNear];
     CornerTopology const & farCorner  = _corners[cIndexFar];
 
+    if (nearCorner.isSharp && farCorner.isSharp) return 2;
+
     int nearSize = nearCorner.ringPoints.GetSize() - 3;
     int farSize  = farCorner.ringPoints.GetSize() - 3;