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'''OpenGL extension SGIX.async_pixel |
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This module customises the behaviour of the |
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OpenGL.raw.GL.SGIX.async_pixel 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 introduces a new asynchronous mode for texture |
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download, pixel download and pixel readback commands. It allows |
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programs to transfer textures or images between the host and the |
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graphics accelerator in parallel with the execution of other |
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graphics commands (possibly taking advantage of a secondary path |
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to the graphics accelerator). It also allows programs to issue |
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non-blocking pixel readback commands that return immediately after |
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they are issued so that the program can issue other commands while |
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the readback takes place. |
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The official definition of this extension is available here: |
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http://www.opengl.org/registry/specs/SGIX/async_pixel.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.SGIX.async_pixel import * |
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from OpenGL.raw.GL.SGIX.async_pixel import _EXTENSION_NAME |
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def glInitAsyncPixelSGIX(): |
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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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