| '''OpenGL extension EXT.light_texture |
| |
| This module customises the behaviour of the |
| OpenGL.raw.GL.EXT.light_texture to provide a more |
| Python-friendly API |
| |
| Overview (from the spec) |
| |
| This extension defines a general mechanism for substituting the |
| fragment color computed during texture environment processing in |
| place of other fragment attributes such as the fragment normal, or |
| as sources for some of the computations in the fragment processing |
| pipeline, for example as material or light parameters in the |
| fragment lighting computations. |
| |
| |
| Cf ----------------------+ |
| | +-> to lighting parameters |
| v | |
| +------------+ +--------+ +-------------+ |
| | | | | | | |
| | texel |------->| texenv |-----| texture |---> Cf' (to Light Environment |
| | generation | | | | application | or Fog) |
| | | | | | | |
| +------------+ +--------+ +-------------+ |
| |
| |
| The official definition of this extension is available here: |
| http://www.opengl.org/registry/specs/EXT/light_texture.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.EXT.light_texture import * |
| from OpenGL.raw.GL.EXT.light_texture import _EXTENSION_NAME |
|
|
| def glInitLightTextureEXT(): |
| '''Return boolean indicating whether this extension is available''' |
| from OpenGL import extensions |
| return extensions.hasGLExtension( _EXTENSION_NAME ) |
|
|
|
|
| |
