glGetClipPlanef, glGetClipPlanex
- return the coefficients of the specified clipping plane
void glGetClipPlanef(GLenum plane, GLfloat *equation)
void glGetClipPlanex(GLenum plane, GLfixed *equation)
plane
Specifies a clipping plane. The number of clipping planes depends on the implementation, but at least six clipping planes are supported. They are identified by symbolic names of the form GL_CLIP_PLANEi
where 0 < i < GL_MAX_CLIP_PLANES
equation
Returns four fixed-point or floating-point values that are the coefficients of the plane equation of plane in eye coordinates. The initial value is (0, 0, 0, 0).
glGetClipPlane
returns in equation the four coefficients of the plane equation for plane.
It is always the case that GL_CLIP_PLANEi
= GL_CLIP_PLANE0
+ i
.
If an error is generated, no change is made to the contents of equation
.
GL_INVALID_ENUM
is generated if plane
is not an accepted value.
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