| '''OpenGL extension ARB.half_float_pixel |
| |
| This module customises the behaviour of the |
| OpenGL.raw.GL.ARB.half_float_pixel to provide a more |
| Python-friendly API |
| |
| Overview (from the spec) |
| |
| This extension introduces a new data type for half-precision (16-bit) |
| floating-point quantities. The floating-point format is very similar |
| to the IEEE single-precision floating-point standard, except that it |
| has only 5 exponent bits and 10 mantissa bits. Half-precision floats |
| are smaller than full precision floats and provide a larger dynamic |
| range than similarly sized normalized scalar data types. |
| |
| This extension allows applications to use half-precision floating- |
| point data when specifying pixel data. It extends the existing image |
| specification commands to accept the new data type. |
| |
| Floating-point data is clamped to [0, 1] at various places in the |
| GL unless clamping is disabled with the ARB_color_buffer_float |
| extension. |
| |
| The official definition of this extension is available here: |
| http://www.opengl.org/registry/specs/ARB/half_float_pixel.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.half_float_pixel import * |
| from OpenGL.raw.GL.ARB.half_float_pixel import _EXTENSION_NAME |
|
|
| def glInitHalfFloatPixelARB(): |
| '''Return boolean indicating whether this extension is available''' |
| from OpenGL import extensions |
| return extensions.hasGLExtension( _EXTENSION_NAME ) |
|
|
|
|
| |
