| | '''OpenGL extension SGIS.fog_function |
| | |
| | This module customises the behaviour of the |
| | OpenGL.raw.GL.SGIS.fog_function to provide a more |
| | Python-friendly API |
| | |
| | Overview (from the spec) |
| | |
| | This extension allows to define application-specific fog blend-factor |
| | function. Function is defined by the set of the "control" points and |
| | should be monotonic. Each control point represented as a pair of the |
| | eye-space distance value and corresponding value of the fog blending |
| | factor. The minimum number of control points is one. The maximum |
| | number is implementation dependent. |
| | |
| | |
| | The official definition of this extension is available here: |
| | http://www.opengl.org/registry/specs/SGIS/fog_function.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.SGIS.fog_function import * |
| | from OpenGL.raw.GL.SGIS.fog_function import _EXTENSION_NAME |
| |
|
| | def glInitFogFunctionSGIS(): |
| | '''Return boolean indicating whether this extension is available''' |
| | from OpenGL import extensions |
| | return extensions.hasGLExtension( _EXTENSION_NAME ) |
| |
|
| | |
| | glFogFuncSGIS=wrapper.wrapper(glFogFuncSGIS).setInputArraySize( |
| | 'points', None |
| | ) |
| | glGetFogFuncSGIS=wrapper.wrapper(glGetFogFuncSGIS).setOutput( |
| | 'points',size=_glgets._glget_size_mapping,pnameArg='',orPassIn=True |
| | ) |
| | |
