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