| | '''OpenGL extension SGIX.texture_multi_buffer |
| | |
| | This module customises the behaviour of the |
| | OpenGL.raw.GL.SGIX.texture_multi_buffer to provide a more |
| | Python-friendly API |
| | |
| | Overview (from the spec) |
| | |
| | This extension provides an API for the application to specify that |
| | the OpenGL should handle multiple textures in such a way that, |
| | wherever possible, a texture definition or redefinition can occur |
| | in parallel with rendering that uses a different texture. |
| | |
| | The texture_object extension allows the simultaneous definition |
| | of multiple textures; any texture that is not being used for |
| | rendering can, in principle, have its definition or operations |
| | in its definition (e.g. downloading to hardware) occur in parallel |
| | with the use of another texture. This is true as long as all |
| | redefinitions strictly follow any use of the previous definition. |
| | |
| | Conceptually this is similar to frame buffer double-buffering, |
| | except that the intent here is to simply provide a hint to the |
| | OpenGL to promote such double-buffering if and wherever possible. |
| | The effect of such a hint is to speed up operations without |
| | affecting the result. The user on any particular system must be |
| | knowledgable and prepared to accept any trade-offs which follow |
| | from such a hint. |
| | |
| | GL_FASTEST in this context means that texture multi-buffering |
| | is being used whenever possible to improve performance. |
| | Generally, textures that are adjacent in a sequence of multiple |
| | texture definitions have the greatest chance of being in |
| | different buffers. The number of buffers available at any time |
| | depends on various factors, such as the machine being used and |
| | the textures' internal formats. |
| | |
| | The official definition of this extension is available here: |
| | http://www.opengl.org/registry/specs/SGIX/texture_multi_buffer.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.SGIX.texture_multi_buffer import * |
| | from OpenGL.raw.GL.SGIX.texture_multi_buffer import _EXTENSION_NAME |
| |
|
| | def glInitTextureMultiBufferSGIX(): |
| | '''Return boolean indicating whether this extension is available''' |
| | from OpenGL import extensions |
| | return extensions.hasGLExtension( _EXTENSION_NAME ) |
| |
|
| |
|
| | |
