1 files changed, 43 insertions, 0 deletions
diff --git a/source/blender/gpu/gawain/primitive.h b/source/blender/gpu/gawain/primitive.h
new file mode 100644
index 00000000000..d1b8f5b3ec7
--- /dev/null
+++ b/source/blender/gpu/gawain/primitive.h
@@ -0,0 +1,43 @@
+
+// Gawain geometric primitives
+//
+// This code is part of the Gawain library, with modifications
+// specific to integration with Blender.
+//
+// Copyright 2017 Mike Erwin
+//
+// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of
+// the MPL was not distributed with this file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+#pragma once
+
+#include "common.h"
+
+typedef enum {
+	PRIM_POINTS = GL_POINTS,
+	PRIM_LINES = GL_LINES,
+	PRIM_TRIANGLES = GL_TRIANGLES,
+
+#ifdef WITH_GL_PROFILE_COMPAT
+	PRIM_QUADS = GL_QUADS, // legacy GL has this, modern GL & Vulkan do not
+#endif
+
+	PRIM_LINE_STRIP = GL_LINE_STRIP,
+	PRIM_LINE_LOOP = GL_LINE_LOOP, // GL has this, Vulkan does not
+	PRIM_TRIANGLE_STRIP = GL_TRIANGLE_STRIP,
+	PRIM_TRIANGLE_FAN = GL_TRIANGLE_FAN,
+
+	PRIM_NONE = 0xF
+} PrimitiveType;
+
+// what types of primitives does each shader expect?
+typedef enum {
+	PRIM_CLASS_NONE    = 0,
+	PRIM_CLASS_POINT   = (1 << 0),
+	PRIM_CLASS_LINE    = (1 << 1),
+	PRIM_CLASS_SURFACE = (1 << 2),
+	PRIM_CLASS_ANY     = PRIM_CLASS_POINT | PRIM_CLASS_LINE | PRIM_CLASS_SURFACE
+} PrimitiveClass;
+
+PrimitiveClass prim_class_of_type(PrimitiveType);
+bool prim_type_belongs_to_class(PrimitiveType, PrimitiveClass);