On Fri, Oct 10, 2014 at 8:44 PM, Olivier Galibert wrote:
> Applied.
Thanks :)
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Applied.
OG.
On Fri, Sep 26, 2014 at 6:11 PM, Erik Faye-Lund wrote:
> Our current atan()-approximation is pretty inaccurate at 1.0, so
> let's try to improve the situation by doing a direct approximation
> without going through atan.
>
> This new implementation uses an 11th degree polynomial t
On Fri, Oct 10, 2014 at 12:22 PM, Timothy Arceri wrote:
> On Mon, 2014-10-06 at 17:03 +0200, Erik Faye-Lund wrote:
>> On Fri, Sep 26, 2014 at 6:11 PM, Erik Faye-Lund wrote:
>> > Our current atan()-approximation is pretty inaccurate at 1.0, so
>> > let's try to improve the situation by doing a dir
On Mon, 2014-10-06 at 17:03 +0200, Erik Faye-Lund wrote:
> On Fri, Sep 26, 2014 at 6:11 PM, Erik Faye-Lund wrote:
> > Our current atan()-approximation is pretty inaccurate at 1.0, so
> > let's try to improve the situation by doing a direct approximation
> > without going through atan.
> >
> > This
On Fri, Sep 26, 2014 at 6:11 PM, Erik Faye-Lund wrote:
> Our current atan()-approximation is pretty inaccurate at 1.0, so
> let's try to improve the situation by doing a direct approximation
> without going through atan.
>
> This new implementation uses an 11th degree polynomial to approximate
> a
Our current atan()-approximation is pretty inaccurate at 1.0, so
let's try to improve the situation by doing a direct approximation
without going through atan.
This new implementation uses an 11th degree polynomial to approximate
atan in the [-1..1] range, and the following identitiy to reduce the
On Thu, Sep 25, 2014 at 4:54 PM, Erik Faye-Lund wrote:
> On Wed, Sep 24, 2014 at 1:35 PM, Erik Faye-Lund wrote:
>> Hm. Don't I need to expand this last immediate to a vector of
>> type->components() size as well?
>>
>> If so, this patch should go on top:
>>
>> diff --git a/src/glsl/builtin_functi
On Wed, Sep 24, 2014 at 1:35 PM, Erik Faye-Lund wrote:
> Hm. Don't I need to expand this last immediate to a vector of
> type->components() size as well?
>
> If so, this patch should go on top:
>
> diff --git a/src/glsl/builtin_functions.cpp b/src/glsl/builtin_functions.cpp
> index 1820dd5..bfa46e
On Wed, Sep 24, 2014 at 4:10 AM, Ian Romanick wrote:
> On 09/23/2014 03:39 PM, Erik Faye-Lund wrote:
>> Our current atan()-approximation is pretty inaccurate at 1.0, so
>> let's try to improve the situation by doing a direct approximation
>> without going through atan.
>>
>> This new implementatio
On 09/23/2014 03:39 PM, Erik Faye-Lund wrote:
> Our current atan()-approximation is pretty inaccurate at 1.0, so
> let's try to improve the situation by doing a direct approximation
> without going through atan.
>
> This new implementation uses an 11th degree polynomial to approximate
> atan in th
On Wed, Sep 24, 2014 at 12:39 AM, Erik Faye-Lund wrote:
> This fixes the following piglit test:
> shaders/glsl-const-folding-01
Forgot to mention: no piglit regressions seen on Ivybridge.
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Our current atan()-approximation is pretty inaccurate at 1.0, so
let's try to improve the situation by doing a direct approximation
without going through atan.
This new implementation uses an 11th degree polynomial to approximate
atan in the [-1..1] range, and the following identitiy to reduce the
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