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added 16-bit/channel rendering info

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Brian Paul 2001-04-26 22:33:34 +00:00
parent 785c3469f4
commit 4dbd625eaf
1 changed files with 10 additions and 10 deletions
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docs/RELNOTES-3.5
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@ -193,19 +193,19 @@ interface structures like __GLimports and __GLexports.
Internal color values
16-bit color channels
---------------------
Previously, Mesa treated color channel values as GLubytes in [0,255].
Mesa 3.5 uses the GLchan datatype for color channel values. In the
future it will be possible to define GLchan to be larger than a byte
in order to support high-precision colors.
There's experimental support for 16-bit color channels (64-bit pixels)
in Mesa 3.5. Only the OSMesa interface can be used for 16-bit rendering.
Type "make linux-osmesa16" in the top-level directory to build the
special libOSMesa16.so library.
Many, many occurances of GLubyte have been replaced with GLchan
and many occurances of the number 255 have been replaced with CHAN_MAX.
Support for CHAN_BITS > 8 is not ready yet but will be eventually.
This hasn't been tested very thoroughly yet so please file bug reports
if you have trouble.
In the future I hope to implement support for 32-bit, floating point
color channels.
----------------------------------------------------------------------
$Id: RELNOTES-3.5,v 1.11 2001/04/20 02:34:12 brianp Exp $
$Id: RELNOTES-3.5,v 1.12 2001/04/26 22:33:34 brianp Exp $