| | '''OpenGL extension NV.fragment_program_option |
| | |
| | This module customises the behaviour of the |
| | OpenGL.raw.GL.NV.fragment_program_option to provide a more |
| | Python-friendly API |
| | |
| | Overview (from the spec) |
| | |
| | This extension provides additional fragment program functionality |
| | to extend the standard ARB_fragment_program language and execution |
| | environment. ARB programs wishing to use this added functionality |
| | need only add: |
| | |
| | OPTION NV_fragment_program; |
| | |
| | to the beginning of their fragment programs. |
| | |
| | The functionality provided by this extension, which is roughly |
| | equivalent to that provided by the NV_fragment_program extension, |
| | includes: |
| | |
| | * increased control over precision in arithmetic computations and |
| | storage, |
| | |
| | * data-dependent conditional writemasks, |
| | |
| | * an absolute value operator on scalar and swizzled operand loads, |
| | |
| | * instructions to compute partial derivatives, and perform texture |
| | lookups using specified partial derivatives, |
| | |
| | * fully orthogonal "set on" instructions, |
| | |
| | * instructions to compute reflection vector and perform a 2D |
| | coordinate transform, and |
| | |
| | * instructions to pack and unpack multiple quantities into a single |
| | component. |
| | |
| | The official definition of this extension is available here: |
| | http://www.opengl.org/registry/specs/NV/fragment_program_option.txt |
| | ''' |
| | from OpenGL import platform, constant, arrays |
| | from OpenGL import extensions, wrapper |
| | import ctypes |
| | from OpenGL.raw.GL import _types, _glgets |
| | from OpenGL.raw.GL.NV.fragment_program_option import * |
| | from OpenGL.raw.GL.NV.fragment_program_option import _EXTENSION_NAME |
| |
|
| | def glInitFragmentProgramOptionNV(): |
| | '''Return boolean indicating whether this extension is available''' |
| | from OpenGL import extensions |
| | return extensions.hasGLExtension( _EXTENSION_NAME ) |
| |
|
| |
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| | |
