1 files changed, 99 insertions, 0 deletions
diff --git a/intern/opensubdiv/internal/opensubdiv.cc b/intern/opensubdiv/internal/opensubdiv.cc
new file mode 100644
index 00000000000..c2945ed25ab
--- /dev/null
+++ b/intern/opensubdiv/internal/opensubdiv.cc
@@ -0,0 +1,99 @@
+// Copyright 2013 Blender Foundation. All rights reserved.
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software Foundation,
+// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+//
+// Author: Sergey Sharybin
+// Contributor(s): Brecht van Lommel
+
+#include "opensubdiv_capi.h"
+
+#ifdef _MSC_VER
+#  include <iso646.h>
+#endif
+
+#include <GL/glew.h>
+
+#include "opensubdiv_device_context_opencl.h"
+#include "opensubdiv_device_context_cuda.h"
+#include "opensubdiv_gl_mesh_capi.h"
+
+void openSubdiv_init(void) {
+  // Ensure all OpenGL strings are cached.
+  openSubdiv_getAvailableEvaluators();
+}
+
+void openSubdiv_cleanup(void) {
+  openSubdiv_deinitGLMeshDrawingResources();
+}
+
+int openSubdiv_getAvailableEvaluators(void) {
+  int flags = OPENSUBDIV_EVALUATOR_CPU;
+
+#ifdef OPENSUBDIV_HAS_OPENMP
+  flags |= OPENSUBDIV_EVALUATOR_OPENMP;
+#endif
+
+#ifdef OPENSUBDIV_HAS_OPENCL
+  if (CLDeviceContext::HAS_CL_VERSION_1_1()) {
+    flags |= OPENSUBDIV_EVALUATOR_OPENCL;
+  }
+#endif
+
+#ifdef OPENSUBDIV_HAS_CUDA
+  if (CudaDeviceContext::HAS_CUDA_VERSION_4_0()) {
+    flags |= OPENSUBDIV_EVALUATOR_CUDA;
+  }
+#endif
+
+#ifdef OPENSUBDIV_HAS_GLSL_TRANSFORM_FEEDBACK
+  if (GLEW_VERSION_4_1) {
+    flags |= OPENSUBDIV_EVALUATOR_GLSL_TRANSFORM_FEEDBACK;
+  }
+#endif
+
+#ifdef OPENSUBDIV_HAS_GLSL_COMPUTE
+  if (GLEW_VERSION_4_3 || GLEW_ARB_compute_shader) {
+    flags |= OPENSUBDIV_EVALUATOR_GLSL_COMPUTE;
+  }
+#endif
+
+  return flags;
+}
+
+int openSubdiv_getVersionHex(void) {
+#if defined(OPENSUBDIV_VERSION_NUMBER)
+  return OPENSUBDIV_VERSION_NUMBER;
+#elif defined(OPENSUBDIV_VERSION_MAJOR)
+  return OPENSUBDIV_VERSION_MAJOR * 10000 +
+         OPENSUBDIV_VERSION_MINOR * 100 +
+         OPENSUBDIV_VERSION_PATCH;
+#elif defined(OPENSUBDIV_VERSION)
+  const char* version = STRINGIFY(OPENSUBDIV_VERSION);
+  if (version[0] == 'v') {
+    version += 1;
+  }
+  int major = 0, minor = 0, patch = 0;
+  vector<string> tokens;
+  opensubdiv_capi::stringSplit(&tokens, version, "_", true);
+  if (tokens.size() == 3) {
+    major = atoi(tokens[0].c_str());
+    minor = atoi(tokens[1].c_str());
+    patch = atoi(tokens[2].c_str());
+  }
+  return major * 10000 + minor * 100 + patch;
+#else
+  return 0;
+#endif
+}