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'''OpenGL extension OML.interlace |
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This module customises the behaviour of the |
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OpenGL.raw.GL.OML.interlace to provide a more |
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Python-friendly API |
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Overview (from the spec) |
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This extension provides a way to interlace rows of pixels when |
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drawing, reading, or copying pixel rectangles or texture images. In |
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this context, interlacing means skiping over rows of pixels or |
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texels in the destination. This is useful for dealing with video |
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data since a single frame of video is typically composed from two |
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images or fields: one image specifying the data for even rows of the |
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frame and the other image specifying the data for odd rows of the |
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frame. |
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The functionality provided by this extension is a combination |
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of the older SGIX_interlace and INGR_interlace_read extensions, |
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with changes applying interlacing to texture image queries. |
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The official definition of this extension is available here: |
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http://www.opengl.org/registry/specs/OML/interlace.txt |
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''' |
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from OpenGL import platform, constant, arrays |
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from OpenGL import extensions, wrapper |
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import ctypes |
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from OpenGL.raw.GL import _types, _glgets |
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from OpenGL.raw.GL.OML.interlace import * |
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from OpenGL.raw.GL.OML.interlace import _EXTENSION_NAME |
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def glInitInterlaceOML(): |
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'''Return boolean indicating whether this extension is available''' |
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from OpenGL import extensions |
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return extensions.hasGLExtension( _EXTENSION_NAME ) |
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