OpenGL.GL.APPLE.transform_hint

OpenGL extension APPLE.transform_hint

This module customises the behaviour of the OpenGL.raw.GL.APPLE.transform_hint to provide a more Python-friendly API

Overview (from the spec)

The transform_hint extension provides a new target, TRANSFORM_HINT_APPLE, for the Hint procedure. When the transform hint is set to FASTEST the GL may choose to implement certain state dependent algebraic simplifications in the geometry transformation that affect the sub-pixel precision of the transformed vertex coordinates.

For example, if two polygons are rendered with identical object coordinates, different GL state settings, and the transform hint set to FASTEST, there is no gaurantee that the resulting window coordinates of the two polygons will be precisely identical. Therefore, precise tests of the window coordinates, such as a depth test setting of EQUAL, should not be used.

If the transform hint is set to NICEST or DONT_CARE, two polygons with identical object coordinates will always be transformed to identical window coordinates.

The official definition of this extension is available here: http://www.opengl.org/registry/specs/APPLE/transform_hint.txt