1 files changed, 84 insertions, 0 deletions
diff --git a/source/blender/gpu/intern/gpu_primitive.c b/source/blender/gpu/intern/gpu_primitive.c
new file mode 100644
index 00000000000..189d17f2dd2
--- /dev/null
+++ b/source/blender/gpu/intern/gpu_primitive.c
@@ -0,0 +1,84 @@
+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * 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.
+ *
+ * The Original Code is Copyright (C) 2016 by Mike Erwin.
+ * All rights reserved.
+ *
+ * Contributor(s): Blender Foundation
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file blender/gpu/intern/gpu_primitive.c
+ *  \ingroup gpu
+ *
+ * GPU geometric primitives
+ */
+
+#include "GPU_primitive.h"
+#include "gpu_primitive_private.h"
+
+GPUPrimClass GPU_primtype_class(GPUPrimType prim_type)
+{
+	static const GPUPrimClass classes[] = {
+		[GPU_PRIM_POINTS] = GPU_PRIM_CLASS_POINT,
+		[GPU_PRIM_LINES] = GPU_PRIM_CLASS_LINE,
+		[GPU_PRIM_LINE_STRIP] = GPU_PRIM_CLASS_LINE,
+		[GPU_PRIM_LINE_LOOP] = GPU_PRIM_CLASS_LINE,
+		[GPU_PRIM_TRIS] = GPU_PRIM_CLASS_SURFACE,
+		[GPU_PRIM_TRI_STRIP] = GPU_PRIM_CLASS_SURFACE,
+		[GPU_PRIM_TRI_FAN] = GPU_PRIM_CLASS_SURFACE,
+
+		[GPU_PRIM_LINES_ADJ] = GPU_PRIM_CLASS_LINE,
+		[GPU_PRIM_LINE_STRIP_ADJ] = GPU_PRIM_CLASS_LINE,
+		[GPU_PRIM_TRIS_ADJ] = GPU_PRIM_CLASS_SURFACE,
+
+		[GPU_PRIM_NONE] = GPU_PRIM_CLASS_NONE
+	};
+
+	return classes[prim_type];
+}
+
+bool GPU_primtype_belongs_to_class(GPUPrimType prim_type, GPUPrimClass prim_class)
+{
+	if (prim_class == GPU_PRIM_CLASS_NONE && prim_type == GPU_PRIM_NONE) {
+		return true;
+	}
+	return prim_class & GPU_primtype_class(prim_type);
+}
+
+GLenum convert_prim_type_to_gl(GPUPrimType prim_type)
+{
+#if TRUST_NO_ONE
+	assert(prim_type != GPU_PRIM_NONE);
+#endif
+	static const GLenum table[] = {
+		[GPU_PRIM_POINTS] = GL_POINTS,
+		[GPU_PRIM_LINES] = GL_LINES,
+		[GPU_PRIM_LINE_STRIP] = GL_LINE_STRIP,
+		[GPU_PRIM_LINE_LOOP] = GL_LINE_LOOP,
+		[GPU_PRIM_TRIS] = GL_TRIANGLES,
+		[GPU_PRIM_TRI_STRIP] = GL_TRIANGLE_STRIP,
+		[GPU_PRIM_TRI_FAN] = GL_TRIANGLE_FAN,
+
+		[GPU_PRIM_LINES_ADJ] = GL_LINES_ADJACENCY,
+		[GPU_PRIM_LINE_STRIP_ADJ] = GL_LINE_STRIP_ADJACENCY,
+		[GPU_PRIM_TRIS_ADJ] = GL_TRIANGLES_ADJACENCY,
+	};
+
+	return table[prim_type];
+}