| | '''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 ) |
| |
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| |
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| | |
