| '''OpenGL extension EXT.copy_image |
| |
| This module customises the behaviour of the |
| OpenGL.raw.GLES2.EXT.copy_image to provide a more |
| Python-friendly API |
| |
| Overview (from the spec) |
| |
| This extension enables efficient image data transfer between image |
| objects (i.e. textures and renderbuffers) without the need to bind |
| the objects or otherwise configure the rendering pipeline. |
| |
| This is accomplised by adding a new entry-point CopyImageSubData, |
| which takes a named source and destination. |
| |
| CopyImageSubData does not perform general-purpose conversions |
| such as scaling, resizing, blending, color-space, or format |
| conversions. It should be considered to operate in a manner |
| similar to a CPU memcpy, but using the GPU for the copy. |
| |
| CopyImageSubData supports copies between images with different |
| internal formats, if the formats are compatible as described in |
| this extension. |
| |
| CopyImageSubData also supports copying between compressed and |
| uncompressed images if the compressed block / uncompressed texel |
| sizes are the same. |
| |
| The official definition of this extension is available here: |
| http://www.opengl.org/registry/specs/EXT/copy_image.txt |
| ''' |
| from OpenGL import platform, constant, arrays |
| from OpenGL import extensions, wrapper |
| import ctypes |
| from OpenGL.raw.GLES2 import _types, _glgets |
| from OpenGL.raw.GLES2.EXT.copy_image import * |
| from OpenGL.raw.GLES2.EXT.copy_image import _EXTENSION_NAME |
|
|
| def glInitCopyImageEXT(): |
| '''Return boolean indicating whether this extension is available''' |
| from OpenGL import extensions |
| return extensions.hasGLExtension( _EXTENSION_NAME ) |
|
|
|
|
| |
