glScissor - define the scissor box

glGet() with argument GL_SCISSOR_BOXglIsEnabled() with argument GL_SCISSOR_TEST

voidglScissor(GLintx,GLinty,GLsizeiwidth,GLsizeiheight);

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

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

glScissor 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.

GL_INVALID_VALUE is generated if either width or height is negative.

       glScissor - define the scissor box

x, 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.

glEnable(), glViewport()

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       │ glScissor │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │
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