| | '''OpenGL extension NV.present_video |
| | |
| | This module customises the behaviour of the |
| | OpenGL.raw.GLX.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.GLX import _types, _glgets |
| | from OpenGL.raw.GLX.NV.present_video import * |
| | from OpenGL.raw.GLX.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 ) |
| |
|
| |
|
| | |
