1GL_EXT_histogram
2http://www.opengl.org/registry/specs/EXT/histogram.txt
3GL_EXT_histogram
4
5	GL_HISTOGRAM_EXT 0x8024
6	GL_PROXY_HISTOGRAM_EXT 0x8025
7	GL_HISTOGRAM_WIDTH_EXT 0x8026
8	GL_HISTOGRAM_FORMAT_EXT 0x8027
9	GL_HISTOGRAM_RED_SIZE_EXT 0x8028
10	GL_HISTOGRAM_GREEN_SIZE_EXT 0x8029
11	GL_HISTOGRAM_BLUE_SIZE_EXT 0x802A
12	GL_HISTOGRAM_ALPHA_SIZE_EXT 0x802B
13	GL_HISTOGRAM_LUMINANCE_SIZE_EXT 0x802C
14	GL_HISTOGRAM_SINK_EXT 0x802D
15	GL_MINMAX_EXT 0x802E
16	GL_MINMAX_FORMAT_EXT 0x802F
17	GL_MINMAX_SINK_EXT 0x8030
18	void glGetHistogramEXT (GLenum target, GLboolean reset, GLenum format, GLenum type, void *values)
19	void glGetHistogramParameterfvEXT (GLenum target, GLenum pname, GLfloat* params)
20	void glGetHistogramParameterivEXT (GLenum target, GLenum pname, GLint* params)
21	void glGetMinmaxEXT (GLenum target, GLboolean reset, GLenum format, GLenum type, void *values)
22	void glGetMinmaxParameterfvEXT (GLenum target, GLenum pname, GLfloat* params)
23	void glGetMinmaxParameterivEXT (GLenum target, GLenum pname, GLint* params)
24	void glHistogramEXT (GLenum target, GLsizei width, GLenum internalformat, GLboolean sink)
25	void glMinmaxEXT (GLenum target, GLenum internalformat, GLboolean sink)
26	void glResetHistogramEXT (GLenum target)
27	void glResetMinmaxEXT (GLenum target)
28