| '''OpenGL extension EXT.draw_instanced |
| |
| This module customises the behaviour of the |
| OpenGL.raw.GL.EXT.draw_instanced to provide a more |
| Python-friendly API |
| |
| Overview (from the spec) |
| |
| This extension provides the means to render multiple instances of |
| an object with a single draw call, and an "instance ID" variable |
| which can be used by the vertex program to compute per-instance |
| values, typically an object's transform. |
| |
| The official definition of this extension is available here: |
| http://www.opengl.org/registry/specs/EXT/draw_instanced.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_instanced import * |
| from OpenGL.raw.GL.EXT.draw_instanced import _EXTENSION_NAME |
|
|
| def glInitDrawInstancedEXT(): |
| '''Return boolean indicating whether this extension is available''' |
| from OpenGL import extensions |
| return extensions.hasGLExtension( _EXTENSION_NAME ) |
|
|
| |
| glDrawElementsInstancedEXT=wrapper.wrapper(glDrawElementsInstancedEXT).setInputArraySize( |
| 'indices', None |
| ) |
| |