| '''OpenGL extension SGIS.detail_texture |
| |
| This module customises the behaviour of the |
| OpenGL.raw.GL.SGIS.detail_texture to provide a more |
| Python-friendly API |
| |
| Overview (from the spec) |
| |
| This extension introduces texture magnification filters that blend |
| between the level 0 image and a separately defined "detail" image. |
| The detail image represents the characteristics of the high frequency |
| subband image above the band-limited level 0 image. The detail image is |
| typically a rectangular portion of the subband image which is modified |
| so that it can be repeated without discontinuities along its edges. |
| Detail blending can be enabled for all color channels, for the alpha |
| channel only, or for the red, green, and blue channels only. It is |
| available only for 2D textures. |
| |
| WARNING - Silicon Graphics has filed for patent protection for some |
| of the techniques described in this extension document. |
| |
| The official definition of this extension is available here: |
| http://www.opengl.org/registry/specs/SGIS/detail_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.SGIS.detail_texture import * |
| from OpenGL.raw.GL.SGIS.detail_texture import _EXTENSION_NAME |
|
|
| def glInitDetailTextureSGIS(): |
| '''Return boolean indicating whether this extension is available''' |
| from OpenGL import extensions |
| return extensions.hasGLExtension( _EXTENSION_NAME ) |
|
|
| |
| glDetailTexFuncSGIS=wrapper.wrapper(glDetailTexFuncSGIS).setInputArraySize( |
| 'points', None |
| ) |
| glGetDetailTexFuncSGIS=wrapper.wrapper(glGetDetailTexFuncSGIS).setOutput( |
| 'points',size=_glgets._glget_size_mapping,pnameArg='target',orPassIn=True |
| ) |
| |
