| '''OpenGL extension NV.multisample_coverage |
| |
| This module customises the behaviour of the |
| OpenGL.raw.WGL.NV.multisample_coverage to provide a more |
| Python-friendly API |
| |
| Overview (from the spec) |
| |
| The ARB_multisample extension provides a mechanism for antialiasing |
| primitives. This mechanism allows an application to request an |
| additional buffer, the multisample buffer, that is added to the |
| framebuffer. An application can request the number of samples per |
| fragment that are stored in the multisample buffer. Rendering |
| proceeds by writing color, depth, and stencil values for each |
| sample to the multisample buffer. The results are automatically |
| resolved to a single displayable color each time a pixel is |
| updated. |
| |
| Coverage Sample Anti-Aliasing (CSAA) is an extension to multisample |
| antialiasing. The technique separates "samples" into two types of |
| samples. "Color samples" are samples with color, depth, and |
| stencil information stored in the multisample buffer. "Coverage |
| samples" include both color samples and additional samples that only |
| provide pixel coverage information. |
| |
| This extension follows the example of the |
| NV_framebuffer_multisample_coverage extension, which adds CSAA |
| support for framebuffer objects. The base description of |
| multisample rendering is written in terms of coverage samples and |
| color samples. The windows system notion of "samples" |
| (SAMPLES_ARB) is layered on top of coverage and color samples. |
| |
| The official definition of this extension is available here: |
| http://www.opengl.org/registry/specs/NV/multisample_coverage.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.multisample_coverage import * |
| from OpenGL.raw.WGL.NV.multisample_coverage import _EXTENSION_NAME |
|
|
| def glInitMultisampleCoverageNV(): |
| '''Return boolean indicating whether this extension is available''' |
| from OpenGL import extensions |
| return extensions.hasGLExtension( _EXTENSION_NAME ) |
|
|
|
|
| |
