GLVIEWPORT - Online Linux Manual Page
Section : 3G
Updated : 01/20/2022
Source : [FIXME: source]
Note : [FIXME: manual]
NAMEglViewport − set the viewport
C SPECIFICATIONvoid glViewport(GLint x, GLint y, GLsizei width, GLsizei height);
PARAMETERSx, y Specify the lower left corner of the viewport rectangle, in pixels. The initial value is (0,0). width, height Specify the width and height of the viewport. When a GL context is first attached to a window, width and height are set to the dimensions of that window.
DESCRIPTIONglViewport specifies the affine transformation of x and y from normalized device coordinates to window coordinates. Let x nd y nd be normalized device coordinates. Then the window coordinates x w y w are computed as follows: x w = x nd + 1 width 2 + x y w = y nd + 1 height 2 + y Viewport width and height are silently clamped to a range that depends on the implementation. To query this range, call glGet() with argument GL_MAX_VIEWPORT_DIMS.
ERRORSGL_INVALID_VALUE is generated if either width or height is negative.
ASSOCIATED GETSglGet() with argument GL_VIEWPORT glGet() with argument GL_MAX_VIEWPORT_DIMS
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 |
| glViewport | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
SEE ALSOglDepthRange()
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/.
COPYRIGHT
Copyright © 1991-2006 Silicon Graphics, Inc.
Copyright © 2010-2014 Khronos Group
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