Name
gl.Scissor -- define the scissor box
Synopsis
gl.Scissor(x, y, width, height)
Function
gl.Scissor() 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 gl.Enable() and gl.Disable() 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. gl.Scissor(0,0,1,1) allows modification of only the lower left pixel in the window, and gl.Scissor(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.

Please consult an OpenGL reference manual for more information.

Inputs
x
specify the left corner of the scissor box; initally 0
y
specify the lower corner of the scissor box; initially 0
width
specify the width of the scissor box
height
specify the height of the scissor box
Errors
#GL_INVALID_VALUE is generated if either width or height is negative.

#GL_INVALID_OPERATION is generated if gl.Scissor() is executed between the execution of gl.Begin() and the corresponding execution of gl.End().

Associated gets
gl.Get() with argument #GL_SCISSOR_BOX

gl.IsEnabled() with argument #GL_SCISSOR_TEST

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