GLSCISSORARRAY - Online Linux Manual Page

Section : 3G
Updated : 01/20/2022
Source : [FIXME: source]
Note : [FIXME: manual]

NAME

glScissorArray − define the scissor box for multiple viewports

C SPECIFICATION

void glScissorArrayv(GLuint

first

, GLsizei

count

, const GLint *

);

PARAMETERS

first

Specifies the index of the first viewport whose scissor box to modify.

count

Specifies the number of scissor boxes to modify.

Specifies the address of an array containing the left, bottom, width and height of each scissor box, in that order.

DESCRIPTION

glScissorArrayv

defines rectangles, called scissor boxes, in window coordinates for each viewport.

first

specifies the index of the first scissor box to modify and

count

specifies the number of scissor boxes to modify.

first

must be less than the value of

GL_MAX_VIEWPORTS

, and

first

count

must be less than or equal to the value of

GL_MAX_VIEWPORTS

specifies the address of an array containing integers specifying the lower left corner of the scissor boxes, and the width and height of the scissor boxes, in that order.

To enable and disable the scissor test, call glEnable

(

) and

glDisable

with argument

GL_SCISSOR_TEST

. The test is initially disabled for all viewports. While the test is enabled, only pixels that lie within the scissor box can be modified by drawing commands. Window coordinates have integer values at the shared corners of frame buffer pixels. glScissor(0,0,1,1) allows modification of only the lower left pixel in the window, and glScissor(0,0,0,0) doesn't allow modification of any pixels in the window.

When the scissor test is disabled, it is as though the scissor box includes the entire window.

ERRORS

GL_INVALID_VALUE

is generated if

first

is greater than or equal to the value of

GL_MAX_VIEWPORTS

GL_INVALID_VALUE

is generated if

first

count

is greater than or equal to the value of

GL_MAX_VIEWPORTS

GL_INVALID_VALUE

is generated if any width or height specified in the array

is negative.

ASSOCIATED GETS

glGet

(

) with argument

GL_SCISSOR_BOX

glIsEnabled

(

) with argument

GL_SCISSOR_TEST

VERSION SUPPORT

	OpenGL Version
Function / Feature Name	2.0	2.1	3.0	3.1	3.2	3.3	4.0	4.1	4.2	4.3	4.4	4.5
glScissorArrayv	−	−	−	−	−	−	−	✔	✔	✔	✔	✔