[FFmpeg-devel] [PATCH] Add a gamma flag to exr loader to avoid banding

Gonzalo Garramuno ggarra13 at gmail.com
Tue Apr 29 10:20:41 CEST 2014

On 29/04/14 05:14, Carl Eugen Hoyos wrote:
> Is the difference still there if you change the gamma default value to 
> 1.0? 

Yes.  It shows up as -0 and +0.  The fate test shows up even if I don't 
do any powf() gamma function.  It seems half_to_float_full (which I 
renamed to exr_half2float) and exr_flt2uint don't return the same 
values.  It seems a precision issue.

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