| '''OpenGL extension EXT.compiled_vertex_array |
| |
| This module customises the behaviour of the |
| OpenGL.raw.GL.EXT.compiled_vertex_array to provide a more |
| Python-friendly API |
| |
| Overview (from the spec) |
| |
| This extension defines an interface which allows static vertex array |
| data to be cached or pre-compiled for more efficient rendering. This |
| is useful for implementations which can cache the transformed results |
| of array data for reuse by several DrawArrays, ArrayElement, or |
| DrawElements commands. It is also useful for implementations which |
| can transfer array data to fast memory for more efficient processing. |
| |
| For example, rendering an M by N mesh of quadrilaterals can be |
| accomplished by setting up vertex arrays containing all of the |
| vertexes in the mesh and issuing M DrawElements commands each of |
| which operate on 2 * N vertexes. Each DrawElements command after |
| the first will share N vertexes with the preceding DrawElements |
| command. If the vertex array data is locked while the DrawElements |
| commands are executed, then OpenGL may be able to transform each |
| of these shared vertexes just once. |
| |
| The official definition of this extension is available here: |
| http://www.opengl.org/registry/specs/EXT/compiled_vertex_array.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.compiled_vertex_array import * |
| from OpenGL.raw.GL.EXT.compiled_vertex_array import _EXTENSION_NAME |
|
|
| def glInitCompiledVertexArrayEXT(): |
| '''Return boolean indicating whether this extension is available''' |
| from OpenGL import extensions |
| return extensions.hasGLExtension( _EXTENSION_NAME ) |
|
|
|
|
| |
