| '''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 ) |
|
|
|
|
| |
