NAME

       glDepthRangeArray - specify mapping of depth values from normalized device coordinates to
       window coordinates for a specified set of viewports

C SPECIFICATION

       void glDepthRangeArrayv(GLuint first, GLsizei count, const GLdouble *v);

PARAMETERS

       first
           Specifies the index of the first viewport whose depth range to update.

       count
           Specifies the number of viewports whose depth range to update.

       v
           Specifies the address of an array containing the near and far values for the depth
           range of each modified viewport.

DESCRIPTION

       After clipping and division by w, depth coordinates range from -1 to 1, corresponding to
       the near and far clipping planes. Each viewport has an independent depth range specified
       as a linear mapping of the normalized depth coordinates in this range to window depth
       coordinates. Regardless of the actual depth buffer implementation, window coordinate depth
       values are treated as though they range from 0 through 1 (like color components).
       glDepthRangeArray specifies a linear mapping of the normalized depth coordinates in this
       range to window depth coordinates for each viewport in the range [first, first + count).
       Thus, the values accepted by glDepthRangeArray are both clamped to this range before they
       are accepted.

       The first parameter specifies the index of the first viewport whose depth range to modify
       and must be less than the value of GL_MAX_VIEWPORTS.  count specifies the number of
       viewports whose depth range to modify.  first + count must be less than or equal to the
       value of GL_MAX_VIEWPORTS.  v specifies the address of an array of pairs of double
       precision floating point values representing the near and far values of the depth range
       for each viewport, in that order.

       The setting of (0,1) maps the near plane to 0 and the far plane to 1. With this mapping,
       the depth buffer range is fully utilized.

NOTES

       It is not necessary that the near plane distance be less than the far plane distance.
       Reverse mappings such as near = 1, and far = 0 are acceptable.

       The type of the v parameter was changed from GLclampd to GLdouble. This change is
       transparent to user code and is described in detail on the removedTypes() page.

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.

ASSOCIATED GETS

       glGet() with argument GL_DEPTH_RANGE

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               │     │     │     │     │     │     │     │     │     │     │     │     │
       ├───────────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
       │glDepthRangeArrayv │  -  │  -  │  -  │  -  │  -  │  -  │  -  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │
       └───────────────────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┘

SEE ALSO

       glDepthFunc(), glDepthRange(), glDepthRangeIndexed(), glPolygonOffset(),
       glViewportArray(), glViewport(), removedTypes()

COPYRIGHT

       Copyright © 2010-2014 Khronos Group. This material may be distributed subject to the terms
       and conditions set forth in the Open Publication License, v 1.0, 8 June 1999.
       http://opencontent.org/openpub/.

COPYRIGHT

       Copyright © 2010-2014 Khronos Group

[FIXME: source]                             01/03/2018                      GLDEPTHRANGEARRAY(3G)