glGetClipPlane: man2/glGetClipPlane.xml
glGetClipPlane returns in equation the four coefficients of the plane equation for plane.
It is always the case that GL_CLIP_PLANE i = GL_CLIP_PLANE0 + i. If an error is generated, no change is made to the contents of equation.
glClipPlane
See Implementation
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glGetClipPlane: man2/glGetClipPlane.xml
glGetClipPlane returns in equation the four coefficients of the plane equation for plane.
It is always the case that GL_CLIP_PLANE i = GL_CLIP_PLANE0 + i. If an error is generated, no change is made to the contents of equation.