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Showing content from http://pyopengl.sourceforge.net/documentation/manual-3.0/glSeparableFilter2D.html below:

PyOpenGL 3.1.0 GL Man Pages

define a separable two-dimensional convolution filter Signature Parameters Variables Description target

Must be GL_SEPARABLE_2D .

internalformat

The internal format of the convolution filter kernel. The allowable values are GL_ALPHA , GL_ALPHA4 , GL_ALPHA8 , GL_ALPHA12 , GL_ALPHA16 , GL_LUMINANCE , GL_LUMINANCE4 , GL_LUMINANCE8 , GL_LUMINANCE12 , GL_LUMINANCE16 , GL_LUMINANCE_ALPHA , GL_LUMINANCE4_ALPHA4 , GL_LUMINANCE6_ALPHA2 , GL_LUMINANCE8_ALPHA8 , GL_LUMINANCE12_ALPHA4 , GL_LUMINANCE12_ALPHA12 , GL_LUMINANCE16_ALPHA16 , GL_INTENSITY , GL_INTENSITY4 , GL_INTENSITY8 , GL_INTENSITY12 , GL_INTENSITY16 , GL_R3_G3_B2 , GL_RGB , GL_RGB4 , GL_RGB5 , GL_RGB8 , GL_RGB10 , GL_RGB12 , GL_RGB16 , GL_RGBA , GL_RGBA2 , GL_RGBA4 , GL_RGB5_A1 , GL_RGBA8 , GL_RGB10_A2 , GL_RGBA12 , or GL_RGBA16 .

width

The number of elements in the pixel array referenced by

row

. (This is the width of the separable filter kernel.)

height

The number of elements in the pixel array referenced by

column

. (This is the height of the separable filter kernel.)

format

The format of the pixel data in

row

and

column

. The allowable values are

GL_RED

,

GL_GREEN

,

GL_BLUE

,

GL_ALPHA

,

GL_RGB

,

GL_BGR

,

GL_RGBA

,

GL_BGRA

,

GL_INTENSITY

,

GL_LUMINANCE

, and

GL_LUMINANCE_ALPHA

.

type

The type of the pixel data in

row

and

column

. Symbolic constants

GL_UNSIGNED_BYTE

,

GL_BYTE

,

GL_BITMAP

,

GL_UNSIGNED_SHORT

,

GL_SHORT

,

GL_UNSIGNED_INT

,

GL_INT

,

GL_FLOAT

,

GL_UNSIGNED_BYTE_3_3_2

,

GL_UNSIGNED_BYTE_2_3_3_REV

,

GL_UNSIGNED_SHORT_5_6_5

,

GL_UNSIGNED_SHORT_5_6_5_REV

,

GL_UNSIGNED_SHORT_4_4_4_4

,

GL_UNSIGNED_SHORT_4_4_4_4_REV

,

GL_UNSIGNED_SHORT_5_5_5_1

,

GL_UNSIGNED_SHORT_1_5_5_5_REV

,

GL_UNSIGNED_INT_8_8_8_8

,

GL_UNSIGNED_INT_8_8_8_8_REV

,

GL_UNSIGNED_INT_10_10_10_2

, and

GL_UNSIGNED_INT_2_10_10_10_REV

are accepted.

row

Pointer to a one-dimensional array of pixel data that is processed to build the row filter kernel.

column

Pointer to a one-dimensional array of pixel data that is processed to build the column filter kernel.

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