| '''OpenGL extension NV.present_video |
| |
| This module customises the behaviour of the |
| OpenGL.raw.WGL.NV.present_video to provide a more |
| Python-friendly API |
| |
| Overview (from the spec) |
| |
| This extension provides a mechanism for displaying textures and |
| renderbuffers on auxiliary video output devices. It allows an |
| application to specify separate buffers for the individual |
| fields used with interlaced output. It also provides a way |
| to present frames or field pairs simultaneously in two separate |
| video streams. It also allows an application to request when images |
| should be displayed, and to obtain feedback on exactly when images |
| are actually first displayed. |
| |
| This specification attempts to avoid language that would tie it to |
| any particular hardware or vendor. However, it should be noted that |
| it has been designed specifically for use with NVIDIA SDI products |
| and the features and limitations of the spec compliment those of |
| NVIDIA's line of SDI video output devices. |
| |
| The official definition of this extension is available here: |
| http://www.opengl.org/registry/specs/NV/present_video.txt |
| ''' |
| from OpenGL import platform, constant, arrays |
| from OpenGL import extensions, wrapper |
| import ctypes |
| from OpenGL.raw.WGL import _types, _glgets |
| from OpenGL.raw.WGL.NV.present_video import * |
| from OpenGL.raw.WGL.NV.present_video import _EXTENSION_NAME |
|
|
| def glInitPresentVideoNV(): |
| '''Return boolean indicating whether this extension is available''' |
| from OpenGL import extensions |
| return extensions.hasGLExtension( _EXTENSION_NAME ) |
|
|
|
|
| |
