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