typedef struct glamor_gl_dispatch {
	/* Transformation functions */
	void (*glMatrixMode) (GLenum mode);
	void (*glLoadIdentity) (void);
	void (*glViewport) (GLint x, GLint y, GLsizei width,
			    GLsizei height);
	/* Drawing functions */
	void (*glRasterPos2i) (GLint x, GLint y);

	/* Vertex Array */
	void (*glDrawArrays) (GLenum mode, GLint first, GLsizei count);

	/* Elements Array*/
	void (*glDrawElements) (GLenum mode, GLsizei count, GLenum type, const GLvoid * indices);
	void (*glDrawRangeElements) (GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid * indices);

	/* Raster functions */
	void (*glReadPixels) (GLint x, GLint y,
			      GLsizei width, GLsizei height,
			      GLenum format, GLenum type, GLvoid * pixels);

	void (*glDrawPixels) (GLsizei width, GLsizei height,
			      GLenum format, GLenum type,
			      const GLvoid * pixels);
	void (*glPixelStorei) (GLenum pname, GLint param);
	/* Texture Mapping */

	void (*glTexParameteri) (GLenum target, GLenum pname, GLint param);
	void (*glTexImage2D) (GLenum target, GLint level,
			      GLint internalFormat,
			      GLsizei width, GLsizei height,
			      GLint border, GLenum format, GLenum type,
			      const GLvoid * pixels);
	/* 1.1 */
	void (*glGenTextures) (GLsizei n, GLuint * textures);
	void (*glDeleteTextures) (GLsizei n, const GLuint * textures);
	void (*glBindTexture) (GLenum target, GLuint texture);
	void (*glTexSubImage2D) (GLenum target, GLint level,
				 GLint xoffset, GLint yoffset,
				 GLsizei width, GLsizei height,
				 GLenum format, GLenum type,
				 const GLvoid * pixels);
	/* MISC */
	void (*glFlush) (void);
	void (*glFinish) (void);
	void (*glGetIntegerv) (GLenum pname, GLint * params);
	const GLubyte *(*glGetString) (GLenum name);
	void (*glScissor) (GLint x, GLint y, GLsizei width,
			   GLsizei height);
	void (*glEnable) (GLenum cap);
	void (*glDisable) (GLenum cap);
	void (*glBlendFunc) (GLenum sfactor, GLenum dfactor);
	void (*glLogicOp) (GLenum opcode);
	GLenum (*glGetError) ( void );

	/* 1.3 */
	void (*glActiveTexture) (GLenum texture);

	/* GL Extentions */
	void (*glGenBuffers) (GLsizei n, GLuint * buffers);
	void (*glBufferData) (GLenum target, GLsizeiptr size,
			      const GLvoid * data, GLenum usage);
	GLvoid *(*glMapBuffer) (GLenum target, GLenum access);
	GLvoid *(*glMapBufferRange) (GLenum target, GLintptr offset, GLsizeiptr length, GLbitfield access);
	GLboolean (*glUnmapBuffer) (GLenum target);
	void (*glBindBuffer) (GLenum target, GLuint buffer);
	void (*glDeleteBuffers) (GLsizei n, const GLuint * buffers);

	void (*glFramebufferTexture2D) (GLenum target, GLenum attachment,
					GLenum textarget, GLuint texture,
					GLint level);
	void (*glBindFramebuffer) (GLenum target, GLuint framebuffer);
	void (*glDeleteFramebuffers) (GLsizei n,
				      const GLuint * framebuffers);
	void (*glGenFramebuffers) (GLsizei n, GLuint * framebuffers);
	GLenum (*glCheckFramebufferStatus) (GLenum target);
	void (*glBlitFramebuffer) (GLint srcX0, GLint srcY0, GLint srcX1,
				   GLint srcY1, GLint dstX0, GLint dstY0,
				   GLint dstX1, GLint dstY1,
				   GLbitfield mask, GLenum filter);

	void (*glVertexAttribPointer) (GLuint index, GLint size,
				       GLenum type, GLboolean normalized,
				       GLsizei stride,
				       const GLvoid * pointer);
	void (*glDisableVertexAttribArray) (GLuint index);
	void (*glEnableVertexAttribArray) (GLuint index);
	void (*glBindAttribLocation) (GLuint program, GLuint index,
				      const GLchar * name);

	void (*glLinkProgram) (GLuint program);
	void (*glShaderSource) (GLuint shader, GLsizei count,
				const GLchar * *string,
				const GLint * length);
	void (*glUseProgram) (GLuint program);
	void (*glUniform1i) (GLint location, GLint v0);
	void (*glUniform1f) (GLint location, GLfloat v0);
	void (*glUniform4f) (GLint location, GLfloat v0, GLfloat v1,
			     GLfloat v2, GLfloat v3);
	void (*glUniform1fv) (GLint location, GLsizei count,
			      const GLfloat * value);
	void (*glUniform2fv) (GLint location, GLsizei count,
			      const GLfloat * value);
	void (*glUniform4fv) (GLint location, GLsizei count,
			      const GLfloat * value);
	void (*glUniformMatrix3fv) (GLint location, GLsizei count,
		           GLboolean transpose, const GLfloat* value);
	GLuint (*glCreateProgram) (void);
	GLuint (*glDeleteProgram) (GLuint);
	GLuint (*glCreateShader) (GLenum type);
	void (*glCompileShader) (GLuint shader);
	void (*glAttachShader) (GLuint program, GLuint shader);
	void (*glDeleteShader) (GLuint shader);
	void (*glGetShaderiv) (GLuint shader, GLenum pname,
			       GLint * params);
	void (*glGetShaderInfoLog) (GLuint shader, GLsizei bufSize,
				    GLsizei * length, GLchar * infoLog);
	void (*glGetProgramiv) (GLuint program, GLenum pname,
				GLint * params);
	void (*glGetProgramInfoLog) (GLuint program, GLsizei bufSize,
				     GLsizei * length, GLchar * infoLog);
	GLint (*glGetUniformLocation) (GLuint program,
				       const GLchar * name);
	void (*glBufferStorage) (GLenum target, GLsizeiptr size,
				 const void *data, GLbitfield flags);

} glamor_gl_dispatch;


typedef void *(*get_proc_address_t) (const char *);

_X_EXPORT Bool
glamor_gl_dispatch_init_impl(struct glamor_gl_dispatch *dispatch,
			     int gl_version,
			     get_proc_address_t get_proc_address);


_X_EXPORT Bool
glamor_gl_dispatch_init(ScreenPtr screen,
			struct glamor_gl_dispatch *dispatch,
			int gl_version);