GLSCISSOR - Online Linux Manual PageSection : 3G
Updated : 01/20/2022
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NAMEglScissor − define the scissor box

C SPECIFICATIONvoid glScissor(GLint x, GLint y, GLsizei width, GLsizei height);

PARAMETERSx, y Specify the lower left corner of the scissor box​. Initially (0, 0)​. width, height Specify the width and height of the scissor box​. When a GL context is first attached to a window, width and height are set to the dimensions of that window​.

DESCRIPTIONglScissor defines a rectangle, called the scissor box, in window coordinates​. The first two arguments, x and y, specify the lower left corner of the box​. width and height specify the width and height of the box​. To enable and disable the scissor test, call glEnable() and glDisable with argument GL_SCISSOR_TEST​. The test is initially disabled​. 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​.

ERRORSGL_INVALID_VALUE is generated if either width or height is negative​.

ASSOCIATED GETSglGet() with argument GL_SCISSOR_BOX glIsEnabled() with argument GL_SCISSOR_TEST

VERSION SUPPORT OpenGL Version Function / Feature Name 2​.0 none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'> 2​.1 3​.0 3​.1 3​.2 3​.3 4​.0 4​.1 4​.2 4​.3 4​.4 4​.5 glScissor

SEE ALSOglEnable(), glViewport()

COPYRIGHTCopyright © 1991−2006 Silicon Graphics, Inc​. Copyright © 2010−2014 Khronos Group​. This document is licensed under the SGI Free Software B License​. For details, see http://oss​.sgi​.com/projects/FreeB/​.

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Copyright © 1991-2006 Silicon Graphics, Inc.
Copyright © 2010-2014 Khronos Group
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