| '''OpenGL extension EXT.blend_equation_separate |
| |
| This module customises the behaviour of the |
| OpenGL.raw.GL.EXT.blend_equation_separate to provide a more |
| Python-friendly API |
| |
| Overview (from the spec) |
| |
| EXT_blend_func_separate introduced separate RGB and alpha blend |
| factors. EXT_blend_minmax introduced a distinct blend equation for |
| combining source and destination blend terms. (EXT_blend_subtract & |
| EXT_blend_logic_op added other blend equation modes.) OpenGL 1.4 |
| integrated both functionalities into the core standard. |
| |
| While there are separate blend functions for the RGB and alpha blend |
| factors, OpenGL 1.4 provides a single blend equation that applies |
| to both RGB and alpha portions of blending. |
| |
| This extension provides a separate blend equation for RGB and alpha |
| to match the generality available for blend factors. |
| |
| The official definition of this extension is available here: |
| http://www.opengl.org/registry/specs/EXT/blend_equation_separate.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.blend_equation_separate import * |
| from OpenGL.raw.GL.EXT.blend_equation_separate import _EXTENSION_NAME |
|
|
| def glInitBlendEquationSeparateEXT(): |
| '''Return boolean indicating whether this extension is available''' |
| from OpenGL import extensions |
| return extensions.hasGLExtension( _EXTENSION_NAME ) |
|
|
|
|
| |
