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diff --git a/source/blender/gpu/intern/gpu_context_private.h b/source/blender/gpu/intern/gpu_context_private.h
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+/*
+ * ***** 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_context_private.h
+ *  \ingroup gpu
+ *
+ * This interface allow GPU to manage GL objects for mutiple context and threads.
+ */
+
+#ifndef __GPU_CONTEXT_PRIVATE_H__
+#define __GPU_CONTEXT_PRIVATE_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "GPU_context.h"
+
+struct GPUFrameBuffer;
+
+GLuint GPU_vao_default(void);
+
+/* These require a gl ctx bound. */
+GLuint GPU_buf_alloc(void);
+GLuint GPU_tex_alloc(void);
+GLuint GPU_vao_alloc(void);
+GLuint GPU_fbo_alloc(void);
+
+/* These can be called any threads even without gl ctx. */
+void GPU_buf_free(GLuint buf_id);
+void GPU_tex_free(GLuint tex_id);
+/* These two need the ctx the id was created with. */
+void GPU_vao_free(GLuint vao_id, GPUContext *ctx);
+void GPU_fbo_free(GLuint fbo_id, GPUContext *ctx);
+
+void gpu_context_add_batch(GPUContext *ctx, GPUBatch *batch);
+void gpu_context_remove_batch(GPUContext *ctx, GPUBatch *batch);
+
+void gpu_context_add_framebuffer(GPUContext *ctx, struct GPUFrameBuffer *fb);
+void gpu_context_remove_framebuffer(GPUContext *ctx, struct GPUFrameBuffer *fb);
+
+void gpu_context_active_framebuffer_set(GPUContext *ctx, struct GPUFrameBuffer *fb);
+struct GPUFrameBuffer *gpu_context_active_framebuffer_get(GPUContext *ctx);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __GPU_CONTEXT_PRIVATE_H__ */