| '''OpenGL extension AMD.blend_minmax_factor |
| |
| This module customises the behaviour of the |
| OpenGL.raw.GL.AMD.blend_minmax_factor to provide a more |
| Python-friendly API |
| |
| Overview (from the spec) |
| |
| The EXT_blend_minmax extension extended the GL's blending functionality |
| to allow the blending equation to be specified by the application. That |
| extension introduced the MIN_EXT and MAX_EXT blend equations, which caused the |
| result of the blend equation to become the minimum or maximum of the source |
| color and destination color, respectively. |
| |
| The MIN_EXT and MAX_EXT blend equations, however, do not include the source |
| or destination blend factors in the arguments to the min and max functions. |
| This extension provides two new blend equations that produce the minimum |
| or maximum of the products of the source color and source factor, and the |
| destination color and destination factor. |
| |
| The official definition of this extension is available here: |
| http://www.opengl.org/registry/specs/AMD/blend_minmax_factor.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.AMD.blend_minmax_factor import * |
| from OpenGL.raw.GL.AMD.blend_minmax_factor import _EXTENSION_NAME |
|
|
| def glInitBlendMinmaxFactorAMD(): |
| '''Return boolean indicating whether this extension is available''' |
| from OpenGL import extensions |
| return extensions.hasGLExtension( _EXTENSION_NAME ) |
|
|
|
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| |
