| '''OpenGL extension ARB.fragment_layer_viewport |
| |
| This module customises the behaviour of the |
| OpenGL.raw.GL.ARB.fragment_layer_viewport to provide a more |
| Python-friendly API |
| |
| Overview (from the spec) |
| |
| The geometry shader has the special built-in variables gl_Layer and |
| gl_ViewportIndex that specify which layer and viewport primitives |
| are rendered to. Currently the fragment shader does not know which |
| layer or viewport the fragments are being written to without the |
| application implementing their own interface variables between |
| the geometry and fragment shaders. |
| |
| This extension specifies that the gl_Layer and gl_ViewportIndex |
| built-in variables are also available to the fragment shader so the |
| application doesn't need to implement these manually. |
| |
| The official definition of this extension is available here: |
| http://www.opengl.org/registry/specs/ARB/fragment_layer_viewport.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.ARB.fragment_layer_viewport import * |
| from OpenGL.raw.GL.ARB.fragment_layer_viewport import _EXTENSION_NAME |
|
|
| def glInitFragmentLayerViewportARB(): |
| '''Return boolean indicating whether this extension is available''' |
| from OpenGL import extensions |
| return extensions.hasGLExtension( _EXTENSION_NAME ) |
|
|
|
|
| |
