1 files changed, 65 insertions, 0 deletions
diff --git a/intern/cycles/device/cuda/util.h b/intern/cycles/device/cuda/util.h
new file mode 100644
index 00000000000..a0898094c08
--- /dev/null
+++ b/intern/cycles/device/cuda/util.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2011-2021 Blender Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#ifdef WITH_CUDA
+
+#  ifdef WITH_CUDA_DYNLOAD
+#    include "cuew.h"
+#  else
+#    include <cuda.h>
+#  endif
+
+CCL_NAMESPACE_BEGIN
+
+class CUDADevice;
+
+/* Utility to push/pop CUDA context. */
+class CUDAContextScope {
+ public:
+  CUDAContextScope(CUDADevice *device);
+  ~CUDAContextScope();
+
+ private:
+  CUDADevice *device;
+};
+
+/* Utility for checking return values of CUDA function calls. */
+#  define cuda_device_assert(cuda_device, stmt) \
+    { \
+      CUresult result = stmt; \
+      if (result != CUDA_SUCCESS) { \
+        const char *name = cuewErrorString(result); \
+        cuda_device->set_error( \
+            string_printf("%s in %s (%s:%d)", name, #stmt, __FILE__, __LINE__)); \
+      } \
+    } \
+    (void)0
+
+#  define cuda_assert(stmt) cuda_device_assert(this, stmt)
+
+#  ifndef WITH_CUDA_DYNLOAD
+/* Transparently implement some functions, so majority of the file does not need
+ * to worry about difference between dynamically loaded and linked CUDA at all. */
+const char *cuewErrorString(CUresult result);
+const char *cuewCompilerPath();
+int cuewCompilerVersion();
+#  endif /* WITH_CUDA_DYNLOAD */
+
+CCL_NAMESPACE_END
+
+#endif /* WITH_CUDA */