| | '''OpenGL extension AMD.sparse_texture |
| | |
| | This module customises the behaviour of the |
| | OpenGL.raw.GL.AMD.sparse_texture to provide a more |
| | Python-friendly API |
| | |
| | Overview (from the spec) |
| | |
| | Recent advances in application complexity and a desire for higher |
| | resolutions have pushed texture sizes up considerably. Often, the amount |
| | of physical memory available to a graphics processor is a limiting factor |
| | in the performance of texture-heavy applications. Once the available |
| | physical memory is exhausted, paging may occur bringing performance down |
| | considerably - or worse, the application may fail. Nevertheless, the amount |
| | of address space available to the graphics processor has increased to the |
| | point where many gigabytes - or even terabytes of address space may be |
| | usable even though that amount of physical memory is not present. |
| | |
| | This extension allows the separation of the graphics processor's address |
| | space (reservation) from the requirement that all textures must be |
| | physically backed (commitment). This exposes a limited form of |
| | virtualization for textures. Use cases include sparse (or partially |
| | resident) textures, texture paging, on-demand and delayed loading of |
| | texture assets and application controlled level of detail. |
| | |
| | The official definition of this extension is available here: |
| | http://www.opengl.org/registry/specs/AMD/sparse_texture.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.AMD.sparse_texture import * |
| | from OpenGL.raw.GL.AMD.sparse_texture import _EXTENSION_NAME |
| |
|
| | def glInitSparseTextureAMD(): |
| | '''Return boolean indicating whether this extension is available''' |
| | from OpenGL import extensions |
| | return extensions.hasGLExtension( _EXTENSION_NAME ) |
| |
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| |
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| | |
