| '''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 ) |
|
|
|
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| |
