📄 getpolygonstipple.html
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<STRONG>NAME</STRONG>
<STRONG>glGetPolygonStipple</STRONG> - return the polygon stipple pattern
<STRONG>C</STRONG> <STRONG>SPECIFICATION</STRONG>
void <STRONG>glGetPolygonStipple</STRONG>( GLubyte *<EM>mask</EM> )
<STRONG>PARAMETERS</STRONG>
<EM>mask</EM> Returns the stipple pattern. The initial value is all
1's.
<STRONG>DESCRIPTION</STRONG>
<STRONG>glGetPolygonStipple</STRONG> returns to <EM>mask</EM> a 32x32 polygon stipple
pattern. The pattern is packed into memory as if
<STRONG>glReadPixels</STRONG> with both <EM>height</EM> and <EM>width</EM> of 32, <EM>type</EM> of
<STRONG>GL_BITMAP</STRONG>, and <EM>format</EM> of <STRONG>GL_COLOR_INDEX</STRONG> were called, and the
stipple pattern were stored in an internal 32x32 color index
buffer. Unlike <STRONG>glReadPixels</STRONG>, however, pixel transfer
operations (shift, offset, pixel map) are not applied to the
returned stipple image.
<STRONG>NOTES</STRONG>
If an error is generated, no change is made to the contents
of <EM>mask</EM>.
<STRONG>ERRORS</STRONG>
<STRONG>GL_INVALID_OPERATION</STRONG> is generated if <STRONG>glGetPolygonStipple</STRONG> is
executed between the execution of <STRONG>glBegin</STRONG> and the
corresponding execution of <STRONG>glEnd</STRONG>.
<STRONG>SEE</STRONG> <STRONG>ALSO</STRONG>
<STRONG>glPixelStore</STRONG>, <STRONG>glPixelTransfer</STRONG>, <STRONG>glPolygonStipple</STRONG>,
<STRONG>glReadPixels</STRONG>
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