OpenGL.GL.SGIX.resample

OpenGL extension SGIX.resample

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

Overview (from the spec)

This extension enhances the unpacking resampling capabilities of the SGIX_subsample extension.

When pixel data is received from the client and an unpacking upsampling mode other than PIXEL_SUBSAMPLE_RATE_4444_SGIX is specified, the upsampling is performed via one of two methods: RESAMPLE_REPLICATE_SGIX, RESAMPLE_ZERO_FILL_SGIX. Replicate and zero fill are provided to give the application greatest performance and control over the filtering process.

However, when pixel data is read back to the client and a packing downsampling mode other than PIXEL_SUBSAMPLE_RATE_4444_SGIX is specified, downsampling is performed via simple component decimation (point sampling). That is, only the RESAMPLE_DECIMATE_SGIX is valid.

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