GLVIEWPORT(3G)                  [FIXME: manual]                 GLVIEWPORT(3G)

NAME
       glViewport - set the viewport

C SPECIFICATION
       void glViewport(GLint x, GLint y, GLsizei width, GLsizei height);

PARAMETERS
       x, 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.

DESCRIPTION
       glViewport 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.

ERRORS
       GL_INVALID_VALUE is generated if either width or height is negative.

ASSOCIATED GETS
       glGet() with argument GL_VIEWPORT

       glGet() with argument GL_MAX_VIEWPORT_DIMS

VERSION SUPPORT

       +-----------+-----------------------------------------------------------------------+
       |           |                            OpenGL Version                             |
       +-----------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
       |Function / | 2.0 | 2.1 | 3.0 | 3.1 | 3.2 | 3.3 | 4.0 | 4.1 | 4.2 | 4.3 | 4.4 | 4.5 |
       |Feature    |     |     |     |     |     |     |     |     |     |     |     |     |
       |Name       |     |     |     |     |     |     |     |     |     |     |     |     |
       +-----------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
       |glViewport | <?> | <?> | <?> | <?> | <?> | <?> | <?> | <?> | <?> | <?> | <?> | <?> |
       +-----------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+

SEE ALSO
       glDepthRange()

COPYRIGHT
       Copyright (C) 1991-2006 Silicon Graphics, Inc. Copyright (C) 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 (C) 1991-2006 Silicon Graphics, Inc.
       Copyright (C) 2010-2014 Khronos Group

[FIXME: source]                   05/21/2022                    GLVIEWPORT(3G)