GL_EXT_convolution http://www.opengl.org/registry/specs/EXT/convolution.txt GL_EXT_convolution GL_CONVOLUTION_1D_EXT 0x8010 GL_CONVOLUTION_2D_EXT 0x8011 GL_SEPARABLE_2D_EXT 0x8012 GL_CONVOLUTION_BORDER_MODE_EXT 0x8013 GL_CONVOLUTION_FILTER_SCALE_EXT 0x8014 GL_CONVOLUTION_FILTER_BIAS_EXT 0x8015 GL_REDUCE_EXT 0x8016 GL_CONVOLUTION_FORMAT_EXT 0x8017 GL_CONVOLUTION_WIDTH_EXT 0x8018 GL_CONVOLUTION_HEIGHT_EXT 0x8019 GL_MAX_CONVOLUTION_WIDTH_EXT 0x801A GL_MAX_CONVOLUTION_HEIGHT_EXT 0x801B GL_POST_CONVOLUTION_RED_SCALE_EXT 0x801C GL_POST_CONVOLUTION_GREEN_SCALE_EXT 0x801D GL_POST_CONVOLUTION_BLUE_SCALE_EXT 0x801E GL_POST_CONVOLUTION_ALPHA_SCALE_EXT 0x801F GL_POST_CONVOLUTION_RED_BIAS_EXT 0x8020 GL_POST_CONVOLUTION_GREEN_BIAS_EXT 0x8021 GL_POST_CONVOLUTION_BLUE_BIAS_EXT 0x8022 GL_POST_CONVOLUTION_ALPHA_BIAS_EXT 0x8023 void glConvolutionFilter1DEXT (GLenum target, GLenum internalformat, GLsizei width, GLenum format, GLenum type, const void *image) void glConvolutionFilter2DEXT (GLenum target, GLenum internalformat, GLsizei width, GLsizei height, GLenum format, GLenum type, const void *image) void glConvolutionParameterfEXT (GLenum target, GLenum pname, GLfloat param) void glConvolutionParameterfvEXT (GLenum target, GLenum pname, const GLfloat* params) void glConvolutionParameteriEXT (GLenum target, GLenum pname, GLint param) void glConvolutionParameterivEXT (GLenum target, GLenum pname, const GLint* params) void glCopyConvolutionFilter1DEXT (GLenum target, GLenum internalformat, GLint x, GLint y, GLsizei width) void glCopyConvolutionFilter2DEXT (GLenum target, GLenum internalformat, GLint x, GLint y, GLsizei width, GLsizei height) void glGetConvolutionFilterEXT (GLenum target, GLenum format, GLenum type, void *image) void glGetConvolutionParameterfvEXT (GLenum target, GLenum pname, GLfloat* params) void glGetConvolutionParameterivEXT (GLenum target, GLenum pname, GLint* params) void glGetSeparableFilterEXT (GLenum target, GLenum format, GLenum type, void *row, void *column, void *span) void glSeparableFilter2DEXT (GLenum target, GLenum internalformat, GLsizei width, GLsizei height, GLenum format, GLenum type, const void *row, const void *column)