| '''OpenGL extension EXT.texture_from_pixmap |
| |
| This module customises the behaviour of the |
| OpenGL.raw.GLX.EXT.texture_from_pixmap to provide a more |
| Python-friendly API |
| |
| Overview (from the spec) |
| |
| This extension allows a color buffer to be used for both rendering and |
| texturing. |
| |
| Only color buffers of pixmaps can be used for texturing by this extension |
| but other types of drawables can be supported by future extensions layered |
| on top of this extension. |
| |
| The functionality of this extension is similar to WGL_ARB_render_texture. |
| However, the purpose of this extension is not to provide |
| "render to texture" like functionality but rather the ability to bind |
| an existing X drawable to a texture. Though, there is nothing that |
| prohibits it from being used for "render to texture". |
| |
| - Windows are problematic as they can change size and therefore are not |
| supported by this extension. |
| |
| - Only a color buffer of a GLX pixmap created using an FBConfig with |
| attribute GLX_BIND_TO_TEXTURE_RGB_EXT or GLX_BIND_TO_TEXTURE_RGBA_EXT |
| set to TRUE can be bound as a texture. |
| |
| - The texture internal format is determined when the color buffer |
| is associated with the texture, guaranteeing that the color |
| buffer format is equivalent to the texture internal format. |
| |
| - A client can create a complete set of mipmap images if |
| EXT_framebuffer_object is supported. |
| |
| |
| The official definition of this extension is available here: |
| http://www.opengl.org/registry/specs/EXT/texture_from_pixmap.txt |
| ''' |
| from OpenGL import platform, constant, arrays |
| from OpenGL import extensions, wrapper |
| import ctypes |
| from OpenGL.raw.GLX import _types, _glgets |
| from OpenGL.raw.GLX.EXT.texture_from_pixmap import * |
| from OpenGL.raw.GLX.EXT.texture_from_pixmap import _EXTENSION_NAME |
|
|
| def glInitTextureFromPixmapEXT(): |
| '''Return boolean indicating whether this extension is available''' |
| from OpenGL import extensions |
| return extensions.hasGLExtension( _EXTENSION_NAME ) |
|
|
|
|
| |
