| '''OpenGL extension ATI.pixel_format_float |
| |
| This module customises the behaviour of the |
| OpenGL.raw.WGL.ATI.pixel_format_float to provide a more |
| Python-friendly API |
| |
| Overview (from the spec) |
| |
| This extension adds pixel formats with floating-point RGBA color |
| components. |
| |
| The size of each float components is specified using the same |
| WGL_RED_BITS_ARB, WGL_GREEN_BITS_ARB, WGL_BLUE_BITS_ARB and |
| WGL_ALPHA_BITS_ARB pixel format attributes that are used for |
| defining the size of fixed-point components. 32 bit floating- |
| point components are in the standard IEEE float format. 16 bit |
| floating-point components have 1 sign bit, 5 exponent bits, |
| and 10 mantissa bits. |
| |
| In standard OpenGL RGBA color components are normally clamped to |
| the range [0,1]. The color components of a float buffer are |
| clamped to the limits of the range representable by their format. |
| |
| |
| The official definition of this extension is available here: |
| http://www.opengl.org/registry/specs/ATI/pixel_format_float.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.ATI.pixel_format_float import * |
| from OpenGL.raw.WGL.ATI.pixel_format_float import _EXTENSION_NAME |
|
|
| def glInitPixelFormatFloatATI(): |
| '''Return boolean indicating whether this extension is available''' |
| from OpenGL import extensions |
| return extensions.hasGLExtension( _EXTENSION_NAME ) |
|
|
|
|
| |
