| '''OpenGL extension EXT.draw_buffers2 |
| |
| This module customises the behaviour of the |
| OpenGL.raw.GL.EXT.draw_buffers2 to provide a more |
| Python-friendly API |
| |
| Overview (from the spec) |
| |
| This extension builds upon the ARB_draw_buffers extension and provides |
| separate blend enables and color write masks for each color output. In |
| ARB_draw_buffers (part of OpenGL 2.0), separate values can be written to |
| each color buffer, but the blend enable and color write mask are global |
| and apply to all color outputs. |
| |
| While this extension does provide separate blend enables, it does not |
| provide separate blend functions or blend equations per color output. |
| |
| |
| The official definition of this extension is available here: |
| http://www.opengl.org/registry/specs/EXT/draw_buffers2.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.draw_buffers2 import * |
| from OpenGL.raw.GL.EXT.draw_buffers2 import _EXTENSION_NAME |
|
|
| def glInitDrawBuffers2EXT(): |
| '''Return boolean indicating whether this extension is available''' |
| from OpenGL import extensions |
| return extensions.hasGLExtension( _EXTENSION_NAME ) |
|
|
| glGetBooleanIndexedvEXT=wrapper.wrapper(glGetBooleanIndexedvEXT).setOutput( |
| 'data',size=_glgets._glget_size_mapping,pnameArg='target',orPassIn=True |
| ) |
| glGetIntegerIndexedvEXT=wrapper.wrapper(glGetIntegerIndexedvEXT).setOutput( |
| 'data',size=_glgets._glget_size_mapping,pnameArg='target',orPassIn=True |
| ) |
| |
