diff --git a/opensubdiv/osd/CMakeLists.txt b/opensubdiv/osd/CMakeLists.txt
index 470b3469..372694d5 100755
--- a/opensubdiv/osd/CMakeLists.txt
+++ b/opensubdiv/osd/CMakeLists.txt
@@ -53,9 +53,8 @@ set(PUBLIC_HEADER_FILES
 )
 
 list(APPEND KERNEL_FILES
-    patchBasisCommonTypes.h
-    patchBasisCommon.h
-    patchBasisCommonEval.h
+    patchBasisTypes.h
+    patchBasis.h
 )
 
 set(DOXY_HEADER_FILES ${PUBLIC_HEADER_FILES})
diff --git a/opensubdiv/osd/clEvaluator.cpp b/opensubdiv/osd/clEvaluator.cpp
index c2f8d710..77d076e8 100644
--- a/opensubdiv/osd/clEvaluator.cpp
+++ b/opensubdiv/osd/clEvaluator.cpp
@@ -42,13 +42,10 @@ static const char *clSource =
 #include "clKernel.gen.h"
 ;
 static const char *patchBasisTypesSource =
-#include "patchBasisCommonTypes.gen.h"
+#include "patchBasisTypes.gen.h"
 ;
 static const char *patchBasisSource =
-#include "patchBasisCommon.gen.h"
-;
-static const char *patchBasisEvalSource =
-#include "patchBasisCommonEval.gen.h"
+#include "patchBasis.gen.h"
 ;
 
 // ----------------------------------------------------------------------------
@@ -175,9 +172,8 @@ CLEvaluator::Compile(BufferDescriptor const &srcDesc,
     const char *sources[] = { defineStr.c_str(),
                               patchBasisTypesSource,
                               patchBasisSource,
-                              patchBasisEvalSource,
                               clSource };
-    _program = clCreateProgramWithSource(_clContext, 5, sources, 0, &errNum);
+    _program = clCreateProgramWithSource(_clContext, 4, sources, 0, &errNum);
     if (errNum != CL_SUCCESS) {
         Far::Error(Far::FAR_RUNTIME_ERROR,
                    "clCreateProgramWithSource (%d)", errNum);
diff --git a/opensubdiv/osd/cpuEvaluator.cpp b/opensubdiv/osd/cpuEvaluator.cpp
index a5ce6978..473e37b9 100644
--- a/opensubdiv/osd/cpuEvaluator.cpp
+++ b/opensubdiv/osd/cpuEvaluator.cpp
@@ -24,9 +24,7 @@
 
 #include "../osd/cpuEvaluator.h"
 #include "../osd/cpuKernel.h"
-#include "../osd/patchBasisCommonTypes.h"
-#include "../osd/patchBasisCommon.h"
-#include "../osd/patchBasisCommonEval.h"
+#include "../osd/patchBasis.h"
 
 #include <cstdlib>
 
diff --git a/opensubdiv/osd/cudaKernel.cu b/opensubdiv/osd/cudaKernel.cu
index 91056553..45fa18f3 100644
--- a/opensubdiv/osd/cudaKernel.cu
+++ b/opensubdiv/osd/cudaKernel.cu
@@ -24,9 +24,8 @@
 
 #include <assert.h>
 #define OSD_PATCH_BASIS_CUDA
-#include "../osd/patchBasisCommonTypes.h"
-#include "../osd/patchBasisCommon.h"
-#include "../osd/patchBasisCommonEval.h"
+#include "../osd/patchBasisTypes.h"
+#include "../osd/patchBasis.h"
 
 // -----------------------------------------------------------------------------
 template<int N> struct DeviceVertex {
diff --git a/opensubdiv/osd/glslPatchShaderSource.cpp b/opensubdiv/osd/glslPatchShaderSource.cpp
index 81a78041..d3576a77 100644
--- a/opensubdiv/osd/glslPatchShaderSource.cpp
+++ b/opensubdiv/osd/glslPatchShaderSource.cpp
@@ -41,13 +41,10 @@ static const char *patchLegacyShaderSource =
 #include "glslPatchLegacy.gen.h"
 ;
 static const char *patchBasisTypesShaderSource =
-#include "patchBasisCommonTypes.gen.h"
+#include "patchBasisTypes.gen.h"
 ;
 static const char *patchBasisShaderSource =
-#include "patchBasisCommon.gen.h"
-;
-static const char *patchBasisEvalShaderSource =
-#include "patchBasisCommonEval.gen.h"
+#include "patchBasis.gen.h"
 ;
 static const char *boxSplineTriangleShaderSource =
 #include "glslPatchBoxSplineTriangle.gen.h"
@@ -84,7 +81,6 @@ GLSLPatchShaderSource::GetPatchBasisShaderSource() {
 #endif
     ss << std::string(patchBasisTypesShaderSource);
     ss << std::string(patchBasisShaderSource);
-    ss << std::string(patchBasisEvalShaderSource);
     return ss.str();
 }
 
diff --git a/opensubdiv/osd/hlslPatchShaderSource.cpp b/opensubdiv/osd/hlslPatchShaderSource.cpp
index 6a3bba49..172ea806 100644
--- a/opensubdiv/osd/hlslPatchShaderSource.cpp
+++ b/opensubdiv/osd/hlslPatchShaderSource.cpp
@@ -43,13 +43,10 @@ static const char *patchLegacyShaderSource =
 #include "hlslPatchLegacy.gen.h"
 ;
 static const char *patchBasisTypesShaderSource =
-#include "patchBasisCommonTypes.gen.h"
+#include "patchBasisTypes.gen.h"
 ;
 static const char *patchBasisShaderSource =
-#include "patchBasisCommon.gen.h"
-;
-static const char *patchBasisEvalShaderSource =
-#include "patchBasisCommonEval.gen.h"
+#include "patchBasis.gen.h"
 ;
 static const char *boxSplineTriangleShaderSource =
 #include "hlslPatchBoxSplineTriangle.gen.h"
@@ -86,7 +83,6 @@ HLSLPatchShaderSource::GetPatchBasisShaderSource() {
 #endif
     ss << std::string(patchBasisTypesShaderSource);
     ss << std::string(patchBasisShaderSource);
-    ss << std::string(patchBasisEvalShaderSource);
     return ss.str();
 }
 
diff --git a/opensubdiv/osd/mtlPatchShaderSource.mm b/opensubdiv/osd/mtlPatchShaderSource.mm
index 754909f0..6129d8b7 100644
--- a/opensubdiv/osd/mtlPatchShaderSource.mm
+++ b/opensubdiv/osd/mtlPatchShaderSource.mm
@@ -44,13 +44,10 @@ static std::string patchLegacyShaderSource(
 #include "mtlPatchLegacy.gen.h"
 );
 static std::string patchBasisTypesShaderSource(
-#include "patchBasisCommonTypes.gen.h"
+#include "patchBasisTypes.gen.h"
 );
 static std::string patchBasisShaderSource(
-#include "patchBasisCommon.gen.h"
-);
-static std::string patchBasisEvalShaderSource(
-#include "patchBasisCommonEval.gen.h"
+#include "patchBasis.gen.h"
 );
 static std::string bsplineShaderSource(
 #include "mtlPatchBSpline.gen.h"
@@ -171,7 +168,6 @@ MTLPatchShaderSource::GetPatchBasisShaderSource() {
 #endif
     ss << patchBasisTypesShaderSource;
     ss << patchBasisShaderSource;
-    ss << patchBasisEvalShaderSource;
     return ss.str();
 }
 
diff --git a/opensubdiv/osd/ompEvaluator.cpp b/opensubdiv/osd/ompEvaluator.cpp
index 543824b5..1352ff6e 100644
--- a/opensubdiv/osd/ompEvaluator.cpp
+++ b/opensubdiv/osd/ompEvaluator.cpp
@@ -24,9 +24,7 @@
 
 #include "../osd/ompEvaluator.h"
 #include "../osd/ompKernel.h"
-#include "../osd/patchBasisCommonTypes.h"
-#include "../osd/patchBasisCommon.h"
-#include "../osd/patchBasisCommonEval.h"
+#include "../osd/patchBasis.h"
 #include <omp.h>
 
 namespace OpenSubdiv {
diff --git a/opensubdiv/osd/patchBasisCommon.h b/opensubdiv/osd/patchBasis.h
similarity index 87%
rename from opensubdiv/osd/patchBasisCommon.h
rename to opensubdiv/osd/patchBasis.h
index 13454fe0..13481a9d 100644
--- a/opensubdiv/osd/patchBasisCommon.h
+++ b/opensubdiv/osd/patchBasis.h
@@ -22,8 +22,33 @@
 //   language governing permissions and limitations under the Apache License.
 //
 
-#ifndef OPENSUBDIV3_OSD_PATCH_BASIS_COMMON_H
-#define OPENSUBDIV3_OSD_PATCH_BASIS_COMMON_H
+#ifndef OPENSUBDIV3_OSD_PATCH_BASIS_H
+#define OPENSUBDIV3_OSD_PATCH_BASIS_H
+
+/// This is an implementation of the functionality from far/patchBasis.h
+/// which can be used from client shader and kernel code, i.e for
+/// GLSL, HLSL, CUDA, OpenCL, Metal, and C++ shaders and kernels.
+///
+/// This is defined within the OpenSubdiv::Osd namespace for C++, but
+/// the methods and types also have an Osd prefix for consistency with
+/// environments (e.g. GLSL, etc.) where C++ namespaces are not available.
+
+#if !defined(OSD_PATCH_BASIS_GLSL) && \
+    !defined(OSD_PATCH_BASIS_HLSL) && \
+    !defined(OSD_PATCH_BASIS_CUDA) && \
+    !defined(OSD_PATCH_BASIS_OPENCL) && \
+    !defined(OSD_PATCH_BASIS_METAL)
+
+#include "../version.h"
+
+#include "../osd/patchBasisTypes.h"
+
+namespace OpenSubdiv {
+namespace OPENSUBDIV_VERSION {
+
+namespace Osd {
+
+#endif
 
 OSD_FUNCTION_STORAGE_CLASS
 // template <typename REAL>
@@ -45,7 +70,6 @@ Osd_EvalBasisLinear(OSD_REAL s, OSD_REAL t,
         wP[2] =  s * t;
         wP[3] = sC * t;
     }
-
     if (OSD_OPTIONAL(wDs && wDt)) {
         wDs[0] = -tC;
         wDs[1] =  tC;
@@ -58,7 +82,7 @@ Osd_EvalBasisLinear(OSD_REAL s, OSD_REAL t,
         wDt[3] =  sC;
 
         if (OSD_OPTIONAL(wDss && wDst && wDtt)) {
-            for(int i=0;i<4;i++) {
+            for(int i = 0; i < 4; ++i) {
                 wDss[i] = 0.0f;
                 wDtt[i] = 0.0f;
             }
@@ -199,7 +223,6 @@ Osd_EvalBasisBSpline(OSD_REAL s, OSD_REAL t,
             }
         }
     }
-
     if (OSD_OPTIONAL(wDs && wDt)) {
         for (int i = 0; i < 4; ++i) {
             for (int j = 0; j < 4; ++j) {
@@ -285,7 +308,6 @@ Osd_EvalBasisBezier(OSD_REAL s, OSD_REAL t,
             }
         }
     }
-
     if (OSD_OPTIONAL(wDs && wDt)) {
         for (int i = 0; i < 4; ++i) {
             for (int j = 0; j < 4; ++j) {
@@ -1415,4 +1437,191 @@ OsdGetGregoryPatchWeights(
     }
 }
 
+//
+//  Higher level basis evaluation functions that deal with parameterization and
+//  boundary issues (reflected in PatchParam) for all patch types:
+//
+OSD_FUNCTION_STORAGE_CLASS
+// template <typename REAL>
+int
+OsdEvaluatePatchBasisNormalized(
+    int patchType, OsdPatchParam param,
+    OSD_REAL s, OSD_REAL t,
+    OSD_OUT_ARRAY(OSD_REAL, wP, 20),
+    OSD_OUT_ARRAY(OSD_REAL, wDs, 20),
+    OSD_OUT_ARRAY(OSD_REAL, wDt, 20),
+    OSD_OUT_ARRAY(OSD_REAL, wDss, 20),
+    OSD_OUT_ARRAY(OSD_REAL, wDst, 20),
+    OSD_OUT_ARRAY(OSD_REAL, wDtt, 20)) {
+
+    int boundaryMask = OsdPatchParamGetBoundary(param);
+
+    int nPoints = 0;
+    if (patchType == OSD_PATCH_DESCRIPTOR_REGULAR) {
+#if OSD_ARRAY_ARG_BOUND_OPTIONAL
+        nPoints = Osd_EvalBasisBSpline(s, t, wP, wDs, wDt, wDss, wDst, wDtt);
+        if (boundaryMask != 0) {
+            Osd_boundBasisBSpline(
+                boundaryMask, wP, wDs, wDt, wDss, wDst, wDtt);
+        }
+#else
+        OSD_REAL wP16[16], wDs16[16], wDt16[16],
+                 wDss16[16], wDst16[16], wDtt16[16];
+        nPoints = Osd_EvalBasisBSpline(
+                s, t, wP16, wDs16, wDt16, wDss16, wDst16, wDtt16);
+        if (boundaryMask != 0) {
+            Osd_boundBasisBSpline(
+                boundaryMask, wP16, wDs16, wDt16, wDss16, wDst16, wDtt16);
+        }
+        for (int i=0; i<nPoints; ++i) {
+            wP[i] = wP16[i];
+            wDs[i] = wDs16[i]; wDt[i] = wDt16[i];
+            wDss[i] = wDss16[i]; wDst[i] = wDst16[i]; wDtt[i] = wDtt16[i];
+        }
+#endif
+    } else if (patchType == OSD_PATCH_DESCRIPTOR_LOOP) {
+#if OSD_ARRAY_ARG_BOUND_OPTIONAL
+        nPoints = Osd_EvalBasisBoxSplineTri(
+                s, t, wP, wDs, wDt, wDss, wDst, wDtt);
+        if (boundaryMask != 0) {
+            Osd_boundBasisBoxSplineTri(
+                boundaryMask, wP, wDs, wDt, wDss, wDst, wDtt);
+        }
+#else
+        OSD_REAL wP12[12], wDs12[12], wDt12[12],
+                 wDss12[12], wDst12[12], wDtt12[12];
+        nPoints = Osd_EvalBasisBoxSplineTri(
+                s, t, wP12, wDs12, wDt12, wDss12, wDst12, wDtt12);
+        if (boundaryMask != 0) {
+            Osd_boundBasisBoxSplineTri(
+                boundaryMask, wP12, wDs12, wDt12, wDss12, wDst12, wDtt12);
+        }
+        for (int i=0; i<nPoints; ++i) {
+            wP[i] = wP12[i];
+            wDs[i] = wDs12[i]; wDt[i] = wDt12[i];
+            wDss[i] = wDss12[i]; wDst[i] = wDst12[i]; wDtt[i] = wDtt12[i];
+        }
+#endif
+    } else if (patchType == OSD_PATCH_DESCRIPTOR_GREGORY_BASIS) {
+        nPoints = Osd_EvalBasisGregory(s, t, wP, wDs, wDt, wDss, wDst, wDtt);
+    } else if (patchType == OSD_PATCH_DESCRIPTOR_GREGORY_TRIANGLE) {
+#if OSD_ARRAY_ARG_BOUND_OPTIONAL
+        nPoints = Osd_EvalBasisGregoryTri(s, t, wP, wDs, wDt, wDss, wDst, wDtt);
+#else
+        OSD_REAL wP18[18], wDs18[18], wDt18[18],
+                 wDss18[18], wDst18[18], wDtt18[18];
+        nPoints = Osd_EvalBasisGregoryTri(
+                s, t, wP18, wDs18, wDt18, wDss18, wDst18, wDtt18);
+        for (int i=0; i<nPoints; ++i) {
+            wP[i] = wP18[i];
+            wDs[i] = wDs18[i]; wDt[i] = wDt18[i];
+            wDss[i] = wDss18[i]; wDst[i] = wDst18[i]; wDtt[i] = wDtt18[i];
+        }
+#endif
+    } else if (patchType == OSD_PATCH_DESCRIPTOR_QUADS) {
+#if OSD_ARRAY_ARG_BOUND_OPTIONAL
+        nPoints = Osd_EvalBasisLinear(s, t, wP, wDs, wDt, wDss, wDst, wDtt);
+#else
+        OSD_REAL wP4[4], wDs4[4], wDt4[4],
+                 wDss4[4], wDst4[4], wDtt4[4];
+        nPoints = Osd_EvalBasisLinear(
+                s, t, wP4, wDs4, wDt4, wDss4, wDst4, wDtt4);
+        for (int i=0; i<nPoints; ++i) {
+            wP[i] = wP4[i];
+            wDs[i] = wDs4[i]; wDt[i] = wDt4[i];
+            wDss[i] = wDss4[i]; wDst[i] = wDst4[i]; wDtt[i] = wDtt4[i];
+        }
+#endif
+    } else if (patchType == OSD_PATCH_DESCRIPTOR_TRIANGLES) {
+#if OSD_ARRAY_ARG_BOUND_OPTIONAL
+        nPoints = Osd_EvalBasisLinearTri(s, t, wP, wDs, wDt, wDss, wDst, wDtt);
+#else
+        OSD_REAL wP3[3], wDs3[3], wDt3[3],
+                 wDss3[3], wDst3[3], wDtt3[3];
+        nPoints = Osd_EvalBasisLinearTri(
+                s, t, wP3, wDs3, wDt3, wDss3, wDst3, wDtt3);
+        for (int i=0; i<nPoints; ++i) {
+            wP[i] = wP3[i];
+            wDs[i] = wDs3[i]; wDt[i] = wDt3[i];
+            wDss[i] = wDss3[i]; wDst[i] = wDst3[i]; wDtt[i] = wDtt3[i];
+        }
+#endif
+    } else {
+        // assert(0);
+    }
+    return nPoints;
+}
+
+OSD_FUNCTION_STORAGE_CLASS
+// template <typename REAL>
+int
+OsdEvaluatePatchBasis(
+    int patchType, OsdPatchParam param,
+    OSD_REAL s, OSD_REAL t,
+    OSD_OUT_ARRAY(OSD_REAL, wP, 20),
+    OSD_OUT_ARRAY(OSD_REAL, wDs, 20),
+    OSD_OUT_ARRAY(OSD_REAL, wDt, 20),
+    OSD_OUT_ARRAY(OSD_REAL, wDss, 20),
+    OSD_OUT_ARRAY(OSD_REAL, wDst, 20),
+    OSD_OUT_ARRAY(OSD_REAL, wDtt, 20)) {
+
+    OSD_REAL derivSign = 1.0f;
+
+    if ((patchType == OSD_PATCH_DESCRIPTOR_LOOP) ||
+        (patchType == OSD_PATCH_DESCRIPTOR_GREGORY_TRIANGLE) ||
+        (patchType == OSD_PATCH_DESCRIPTOR_TRIANGLES)) {
+        OSD_REAL uv[2] = OSD_ARRAY_2(OSD_REAL, s, t);
+        OsdPatchParamNormalizeTriangle(param, uv);
+        s = uv[0];
+        t = uv[1];
+        if (OsdPatchParamIsTriangleRotated(param)) {
+            derivSign = -1.0f;
+        }
+    } else {
+        OSD_REAL uv[2] = OSD_ARRAY_2(OSD_REAL, s, t);
+        OsdPatchParamNormalize(param, uv);
+        s = uv[0];
+        t = uv[1];
+    }
+
+    int nPoints = OsdEvaluatePatchBasisNormalized(
+        patchType, param, s, t, wP, wDs, wDt, wDss, wDst, wDtt);
+
+    if (OSD_OPTIONAL(wDs && wDt)) {
+        OSD_REAL d1Scale =
+                derivSign * OSD_REAL_CAST(1 << OsdPatchParamGetDepth(param));
+
+        for (int i = 0; i < nPoints; ++i) {
+            wDs[i] *= d1Scale;
+            wDt[i] *= d1Scale;
+        }
+
+        if (OSD_OPTIONAL(wDss && wDst && wDtt)) {
+            OSD_REAL d2Scale = derivSign * d1Scale * d1Scale;
+
+            for (int i = 0; i < nPoints; ++i) {
+                wDss[i] *= d2Scale;
+                wDst[i] *= d2Scale;
+                wDtt[i] *= d2Scale;
+            }
+        }
+    }
+    return nPoints;
+}
+
+#if !defined(OSD_PATCH_BASIS_GLSL) && \
+    !defined(OSD_PATCH_BASIS_HLSL) && \
+    !defined(OSD_PATCH_BASIS_CUDA) && \
+    !defined(OSD_PATCH_BASIS_OPENCL) && \
+    !defined(OSD_PATCH_BASIS_METAL)
+
+}  // end namespace Osd
+
+}  // end namespace OPENSUBDIV_VERSION
+using namespace OPENSUBDIV_VERSION;
+
+}  // end namespace OpenSubdiv
+
+#endif
+
 #endif /* OPENSUBDIV3_OSD_PATCH_BASIS_H */
diff --git a/opensubdiv/osd/patchBasisCommonEval.h b/opensubdiv/osd/patchBasisCommonEval.h
deleted file mode 100644
index 5af5953a..00000000
--- a/opensubdiv/osd/patchBasisCommonEval.h
+++ /dev/null
@@ -1,196 +0,0 @@
-//
-//   Copyright 2018 Pixar
-//
-//   Licensed under the Apache License, Version 2.0 (the "Apache License")
-//   with the following modification; you may not use this file except in
-//   compliance with the Apache License and the following modification to it:
-//   Section 6. Trademarks. is deleted and replaced with:
-//
-//   6. Trademarks. This License does not grant permission to use the trade
-//      names, trademarks, service marks, or product names of the Licensor
-//      and its affiliates, except as required to comply with Section 4(c) of
-//      the License and to reproduce the content of the NOTICE file.
-//
-//   You may obtain a copy of the Apache License at
-//
-//       http://www.apache.org/licenses/LICENSE-2.0
-//
-//   Unless required by applicable law or agreed to in writing, software
-//   distributed under the Apache License with the above modification is
-//   distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-//   KIND, either express or implied. See the Apache License for the specific
-//   language governing permissions and limitations under the Apache License.
-//
-
-#ifndef OPENSUBDIV3_OSD_PATCH_BASIS_COMMON_EVAL_H
-#define OPENSUBDIV3_OSD_PATCH_BASIS_COMMON_EVAL_H
-
-OSD_FUNCTION_STORAGE_CLASS
-// template <typename REAL>
-int
-OsdEvaluatePatchBasisNormalized(
-    int patchType, OsdPatchParam param,
-    OSD_REAL s, OSD_REAL t,
-    OSD_OUT_ARRAY(OSD_REAL, wP, 20),
-    OSD_OUT_ARRAY(OSD_REAL, wDs, 20),
-    OSD_OUT_ARRAY(OSD_REAL, wDt, 20),
-    OSD_OUT_ARRAY(OSD_REAL, wDss, 20),
-    OSD_OUT_ARRAY(OSD_REAL, wDst, 20),
-    OSD_OUT_ARRAY(OSD_REAL, wDtt, 20)) {
-
-    int boundaryMask = OsdPatchParamGetBoundary(param);
-
-    int nPoints = 0;
-    if (patchType == OSD_PATCH_DESCRIPTOR_REGULAR) {
-#if OSD_ARRAY_ARG_BOUND_OPTIONAL
-        nPoints = Osd_EvalBasisBSpline(s, t, wP, wDs, wDt, wDss, wDst, wDtt);
-        if (boundaryMask != 0) {
-            Osd_boundBasisBSpline(
-                boundaryMask, wP, wDs, wDt, wDss, wDst, wDtt);
-        }
-#else
-        OSD_REAL wP16[16], wDs16[16], wDt16[16],
-                 wDss16[16], wDst16[16], wDtt16[16];
-        nPoints = Osd_EvalBasisBSpline(
-                s, t, wP16, wDs16, wDt16, wDss16, wDst16, wDtt16);
-        if (boundaryMask != 0) {
-            Osd_boundBasisBSpline(
-                boundaryMask, wP16, wDs16, wDt16, wDss16, wDst16, wDtt16);
-        }
-        for (int i=0; i<nPoints; ++i) {
-            wP[i] = wP16[i];
-            wDs[i] = wDs16[i]; wDt[i] = wDt16[i];
-            wDss[i] = wDss16[i]; wDst[i] = wDst16[i]; wDtt[i] = wDtt16[i];
-        }
-#endif
-    } else if (patchType == OSD_PATCH_DESCRIPTOR_LOOP) {
-#if OSD_ARRAY_ARG_BOUND_OPTIONAL
-        nPoints = Osd_EvalBasisBoxSplineTri(
-                s, t, wP, wDs, wDt, wDss, wDst, wDtt);
-        if (boundaryMask != 0) {
-            Osd_boundBasisBoxSplineTri(
-                boundaryMask, wP, wDs, wDt, wDss, wDst, wDtt);
-        }
-#else
-        OSD_REAL wP12[12], wDs12[12], wDt12[12],
-                 wDss12[12], wDst12[12], wDtt12[12];
-        nPoints = Osd_EvalBasisBoxSplineTri(
-                s, t, wP12, wDs12, wDt12, wDss12, wDst12, wDtt12);
-        if (boundaryMask != 0) {
-            Osd_boundBasisBoxSplineTri(
-                boundaryMask, wP12, wDs12, wDt12, wDss12, wDst12, wDtt12);
-        }
-        for (int i=0; i<nPoints; ++i) {
-            wP[i] = wP12[i];
-            wDs[i] = wDs12[i]; wDt[i] = wDt12[i];
-            wDss[i] = wDss12[i]; wDst[i] = wDst12[i]; wDtt[i] = wDtt12[i];
-        }
-#endif
-    } else if (patchType == OSD_PATCH_DESCRIPTOR_GREGORY_BASIS) {
-        nPoints = Osd_EvalBasisGregory(s, t, wP, wDs, wDt, wDss, wDst, wDtt);
-    } else if (patchType == OSD_PATCH_DESCRIPTOR_GREGORY_TRIANGLE) {
-#if OSD_ARRAY_ARG_BOUND_OPTIONAL
-        nPoints = Osd_EvalBasisGregoryTri(s, t, wP, wDs, wDt, wDss, wDst, wDtt);
-#else
-        OSD_REAL wP18[18], wDs18[18], wDt18[18],
-                 wDss18[18], wDst18[18], wDtt18[18];
-        nPoints = Osd_EvalBasisGregoryTri(
-                s, t, wP18, wDs18, wDt18, wDss18, wDst18, wDtt18);
-        for (int i=0; i<nPoints; ++i) {
-            wP[i] = wP18[i];
-            wDs[i] = wDs18[i]; wDt[i] = wDt18[i];
-            wDss[i] = wDss18[i]; wDst[i] = wDst18[i]; wDtt[i] = wDtt18[i];
-        }
-#endif
-    } else if (patchType == OSD_PATCH_DESCRIPTOR_QUADS) {
-#if OSD_ARRAY_ARG_BOUND_OPTIONAL
-        nPoints = Osd_EvalBasisLinear(s, t, wP, wDs, wDt, wDss, wDst, wDtt);
-#else
-        OSD_REAL wP4[4], wDs4[4], wDt4[4],
-                 wDss4[4], wDst4[4], wDtt4[4];
-        nPoints = Osd_EvalBasisLinear(
-                s, t, wP4, wDs4, wDt4, wDss4, wDst4, wDtt4);
-        for (int i=0; i<nPoints; ++i) {
-            wP[i] = wP4[i];
-            wDs[i] = wDs4[i]; wDt[i] = wDt4[i];
-            wDss[i] = wDss4[i]; wDst[i] = wDst4[i]; wDtt[i] = wDtt4[i];
-        }
-#endif
-    } else if (patchType == OSD_PATCH_DESCRIPTOR_TRIANGLES) {
-#if OSD_ARRAY_ARG_BOUND_OPTIONAL
-        nPoints = Osd_EvalBasisLinearTri(s, t, wP, wDs, wDt, wDss, wDst, wDtt);
-#else
-        OSD_REAL wP3[3], wDs3[3], wDt3[3],
-                 wDss3[3], wDst3[3], wDtt3[3];
-        nPoints = Osd_EvalBasisLinearTri(
-                s, t, wP3, wDs3, wDt3, wDss3, wDst3, wDtt3);
-        for (int i=0; i<nPoints; ++i) {
-            wP[i] = wP3[i];
-            wDs[i] = wDs3[i]; wDt[i] = wDt3[i];
-            wDss[i] = wDss3[i]; wDst[i] = wDst3[i]; wDtt[i] = wDtt3[i];
-        }
-#endif
-    } else {
-        // assert(0);
-    }
-    return nPoints;
-}
-
-OSD_FUNCTION_STORAGE_CLASS
-// template <typename REAL>
-int
-OsdEvaluatePatchBasis(
-    int patchType, OsdPatchParam param,
-    OSD_REAL s, OSD_REAL t,
-    OSD_OUT_ARRAY(OSD_REAL, wP, 20),
-    OSD_OUT_ARRAY(OSD_REAL, wDs, 20),
-    OSD_OUT_ARRAY(OSD_REAL, wDt, 20),
-    OSD_OUT_ARRAY(OSD_REAL, wDss, 20),
-    OSD_OUT_ARRAY(OSD_REAL, wDst, 20),
-    OSD_OUT_ARRAY(OSD_REAL, wDtt, 20)) {
-
-    OSD_REAL derivSign = 1.0f;
-
-    if ((patchType == OSD_PATCH_DESCRIPTOR_LOOP) ||
-        (patchType == OSD_PATCH_DESCRIPTOR_GREGORY_TRIANGLE) ||
-        (patchType == OSD_PATCH_DESCRIPTOR_TRIANGLES)) {
-        OSD_REAL uv[2] = OSD_ARRAY_2(OSD_REAL, s, t);
-        OsdPatchParamNormalizeTriangle(param, uv);
-        s = uv[0];
-        t = uv[1];
-        if (OsdPatchParamIsTriangleRotated(param)) {
-            derivSign = -1.0f;
-        }
-    } else {
-        OSD_REAL uv[2] = OSD_ARRAY_2(OSD_REAL, s, t);
-        OsdPatchParamNormalize(param, uv);
-        s = uv[0];
-        t = uv[1];
-    }
-
-    int nPoints = OsdEvaluatePatchBasisNormalized(
-        patchType, param, s, t, wP, wDs, wDt, wDss, wDst, wDtt);
-
-    if (OSD_OPTIONAL(wDs && wDt)) {
-        OSD_REAL d1Scale =
-                derivSign * OSD_REAL_CAST(1 << OsdPatchParamGetDepth(param));
-
-        for (int i = 0; i < nPoints; ++i) {
-            wDs[i] *= d1Scale;
-            wDt[i] *= d1Scale;
-        }
-
-        if (OSD_OPTIONAL(wDss && wDst && wDtt)) {
-            OSD_REAL d2Scale = derivSign * d1Scale * d1Scale;
-
-            for (int i = 0; i < nPoints; ++i) {
-                wDss[i] *= d2Scale;
-                wDst[i] *= d2Scale;
-                wDtt[i] *= d2Scale;
-            }
-        }
-    }
-    return nPoints;
-}
-
-#endif /* OPENSUBDIV3_OSD_PATCH_BASIS_COMMON_EVAL_H */
diff --git a/opensubdiv/osd/patchBasisCommonTypes.h b/opensubdiv/osd/patchBasisTypes.h
similarity index 92%
rename from opensubdiv/osd/patchBasisCommonTypes.h
rename to opensubdiv/osd/patchBasisTypes.h
index 594e6b11..d3d98f32 100644
--- a/opensubdiv/osd/patchBasisCommonTypes.h
+++ b/opensubdiv/osd/patchBasisTypes.h
@@ -22,8 +22,31 @@
 //   language governing permissions and limitations under the Apache License.
 //
 
-#ifndef OPENSUBDIV3_OSD_PATCH_BASIS_COMMON_TYPES_H
-#define OPENSUBDIV3_OSD_PATCH_BASIS_COMMON_TYPES_H
+#ifndef OPENSUBDIV3_OSD_PATCH_BASIS_TYPES_H
+#define OPENSUBDIV3_OSD_PATCH_BASIS_TYPES_H
+
+/// This is an implementation of the functionality from osd/types.h
+/// which can be used from client shader and kernel code, i.e for
+/// GLSL, HLSL, CUDA, OpenCL, Metal, and C++ shaders and kernels.
+///
+/// This is defined within the OpenSubdiv::Osd namespace for C++, but
+/// the methods and types also have an Osd prefix for consistency with
+/// environments (e.g. GLSL, etc.) where C++ namespaces are not available.
+
+#if !defined(OSD_PATCH_BASIS_GLSL) && \
+    !defined(OSD_PATCH_BASIS_HLSL) && \
+    !defined(OSD_PATCH_BASIS_CUDA) && \
+    !defined(OSD_PATCH_BASIS_OPENCL) && \
+    !defined(OSD_PATCH_BASIS_METAL)
+
+#include "../version.h"
+
+namespace OpenSubdiv {
+namespace OPENSUBDIV_VERSION {
+
+namespace Osd {
+
+#endif
 
 #if defined(OSD_PATCH_BASIS_GLSL)
 
@@ -419,4 +442,19 @@ OsdPatchParamUnnormalizeTriangle(
     }
 }
 
-#endif /* OPENSUBDIV3_OSD_PATCH_BASIS_COMMON_TYPES_H */
+#if !defined(OSD_PATCH_BASIS_GLSL) && \
+    !defined(OSD_PATCH_BASIS_HLSL) && \
+    !defined(OSD_PATCH_BASIS_CUDA) && \
+    !defined(OSD_PATCH_BASIS_OPENCL) && \
+    !defined(OSD_PATCH_BASIS_METAL)
+
+}  // end namespace Osd
+
+}  // end namespace OPENSUBDIV_VERSION
+using namespace OPENSUBDIV_VERSION;
+
+}  // end namespace OpenSubdiv
+
+#endif
+
+#endif /* OPENSUBDIV3_OSD_PATCH_BASIS_TYPES_H */
diff --git a/opensubdiv/osd/tbbKernel.cpp b/opensubdiv/osd/tbbKernel.cpp
index 968b94ff..07cf8e14 100644
--- a/opensubdiv/osd/tbbKernel.cpp
+++ b/opensubdiv/osd/tbbKernel.cpp
@@ -26,9 +26,7 @@
 #include "../osd/tbbKernel.h"
 #include "../osd/types.h"
 #include "../osd/bufferDescriptor.h"
-#include "../osd/patchBasisCommonTypes.h"
-#include "../osd/patchBasisCommon.h"
-#include "../osd/patchBasisCommonEval.h"
+#include "../osd/patchBasis.h"
 
 #include <cassert>
 #include <cstdlib>