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diff --git a/source/blender/gpu/GPU_extensions.h b/source/blender/gpu/GPU_extensions.h
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+++ b/source/blender/gpu/GPU_extensions.h
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+/**
+ * $Id$
+ *
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * This shader 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. The Blender
+ * Foundation also sells licenses for use in proprietary software under
+ * the Blender License.  See http://www.blender.org/BL/ for information
+ * about this.
+ *
+ * This shader 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 shader; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * The Original Code is Copyright (C) 2005 Blender Foundation.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): Brecht Van Lommel.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+#ifndef GPU_EXTENSIONS_H
+#define GPU_EXTENSIONS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* GPU extensions support */
+
+struct Image;
+struct ImageUser;
+
+struct GPUTexture;
+typedef struct GPUTexture GPUTexture;
+
+struct GPUFrameBuffer;
+typedef struct GPUFrameBuffer GPUFrameBuffer;
+
+struct GPUShader;
+typedef struct GPUShader GPUShader;
+
+void GPU_extensions_init(void); /* call this before running any of the functions below */
+void GPU_extensions_exit(void);
+int GPU_extensions_minimum_support(void);
+int GPU_print_error(char *str);
+
+/* GPU Texture
+   - always returns unsigned char RGBA textures
+   - if texture with non square dimensions is created, depending on the
+     graphics card capabilities the texture may actually be stored in a
+	 larger texture with power of two dimensions. the actual dimensions
+	 may be querd with GPU_texture_opengl_width/height. GPU_texture_coord_2f
+	 calls glTexCoord2f with the coordinates adjust for this.
+   - can use reference counting:
+       - reference counter after GPU_texture_create is 1
+       - GPU_texture_ref increases by one
+       - GPU_texture_free decreases by one, and frees if 0
+	- if created with from_blender, will not free the texture
+*/
+
+GPUTexture *GPU_texture_create_1D(int w, float *pixels);
+GPUTexture *GPU_texture_create_2D(int w, int h, float *pixels);
+GPUTexture *GPU_texture_create_depth(int w, int h);
+GPUTexture *GPU_texture_from_blender(struct Image *ima,
+	struct ImageUser *iuser, double time);
+void GPU_texture_free(GPUTexture *tex);
+
+void GPU_texture_ref(GPUTexture *tex);
+
+void GPU_texture_bind(GPUTexture *tex, int number);
+void GPU_texture_unbind(GPUTexture *tex);
+
+GPUFrameBuffer *GPU_texture_framebuffer(GPUTexture *tex);
+
+int GPU_texture_target(GPUTexture *tex);
+int GPU_texture_opengl_width(GPUTexture *tex);
+int GPU_texture_opengl_height(GPUTexture *tex);
+
+/* GPU Framebuffer
+   - this is a wrapper for an OpenGL framebuffer object (FBO). in practice
+     multiple FBO's may be created, to get around limitations on the number
+	 of attached textures and the dimension requirements.
+   - after any of the GPU_framebuffer_* functions, GPU_framebuffer_restore must
+     be called before rendering to the window framebuffer again */
+
+GPUFrameBuffer *GPU_framebuffer_create();
+int GPU_framebuffer_texture_attach(GPUFrameBuffer *fb, GPUTexture *tex);
+void GPU_framebuffer_texture_detach(GPUFrameBuffer *fb, GPUTexture *tex);
+void GPU_framebuffer_texture_bind(GPUFrameBuffer *fb, GPUTexture *tex);
+void GPU_framebuffer_texture_unbind(GPUFrameBuffer *fb, GPUTexture *tex);
+void GPU_framebuffer_free(GPUFrameBuffer *fb);
+
+void GPU_framebuffer_restore();
+
+/* GPU Shader
+   - only for fragment shaders now
+   - must call texture bind before setting a texture as uniform! */
+
+GPUShader *GPU_shader_create(const char *vertexcode, const char *fragcode, GPUShader *lib);
+GPUShader *GPU_shader_create_lib(const char *code);
+void GPU_shader_free(GPUShader *shader);
+
+void GPU_shader_bind(GPUShader *shader);
+void GPU_shader_unbind();
+
+int GPU_shader_get_uniform(GPUShader *shader, char *name);
+void GPU_shader_uniform_vector(GPUShader *shader, int location, int length,
+	int arraysize, float *value);
+void GPU_shader_uniform_texture(GPUShader *shader, int location, GPUTexture *tex);
+
+int GPU_shader_get_attribute(GPUShader *shader, char *name);
+
+/* Vertex attributes for shaders */
+
+#define GPU_MAX_ATTRIB		32
+
+typedef struct GPUVertexAttribs {
+	struct {
+		int type;
+		int glindex;
+		char name[32];
+	} layer[GPU_MAX_ATTRIB];
+
+	int totlayer;
+} GPUVertexAttribs;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+