glViewport - set the viewport

glGet() with argument GL_VIEWPORTglGet() with argument GL_MAX_VIEWPORT_DIMS

voidglViewport(GLintx,GLinty,GLsizeiwidth,GLsizeiheight);

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

[FIXME: source]                                    11/18/2024                                     GLVIEWPORT(3G)

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.

GL_INVALID_VALUE is generated if either width or height is negative.

       glViewport - set the viewport

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.

glDepthRange()

       ┌────────────┬───────────────────────────────────────────────────────────────────────┐
       │            │                OpenGLVersion                                         │
       ├────────────┼─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┤
       │ 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 │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │
       └────────────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┘