| '''OpenGL extension NV.explicit_multisample |
| |
| This module customises the behaviour of the |
| OpenGL.raw.GL.NV.explicit_multisample to provide a more |
| Python-friendly API |
| |
| Overview (from the spec) |
| |
| In traditional multisample specs, the API only allows access to the samples |
| indirectly through methods such as coverage values and downsampled |
| readbacks. NV_explicit_multisample adds a set of new capabilities to allow |
| more precise control over the use of multisamples. Specifically, it adds: |
| |
| * A query in the API to query the location of samples within the pixel |
| |
| * An explicit control for the multisample sample mask to augment the |
| control provided by SampleCoverage |
| |
| * A new texture target to wrap a renderbuffer and allow a restricted class |
| of accesses to the samples |
| |
| * The ability to fetch a specific sample from a multisampled texture from |
| within a shader |
| |
| * A program option to enable the new behavior |
| |
| The official definition of this extension is available here: |
| http://www.opengl.org/registry/specs/NV/explicit_multisample.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.NV.explicit_multisample import * |
| from OpenGL.raw.GL.NV.explicit_multisample import _EXTENSION_NAME |
|
|
| def glInitExplicitMultisampleNV(): |
| '''Return boolean indicating whether this extension is available''' |
| from OpenGL import extensions |
| return extensions.hasGLExtension( _EXTENSION_NAME ) |
|
|
| glGetMultisamplefvNV=wrapper.wrapper(glGetMultisamplefvNV).setOutput( |
| 'val',size=(2,),orPassIn=True |
| ) |
| |
