[Mesa-users] Texture coordinates are all zero

[Jason Anderssen]

Hi Viral,

Thank you for your response, I have posted the trace to this list and Brian as well, so  I hope he can help me with it.
In the mean time, I am trying to debug it myself, but Mesa is very large, so I will see how I go.

The mesa list did respond explaining the attachment was too large and waiting for a moderator to approve it, however I did send it to Brian as well (so hopefully he got it as well)

Cheers
Jason

From: Viral Patel <viral.patel at ansys.com<mailto:viral.patel at ansys.com>>
Date: Wed, 22 Oct 2014 10:23:35 +0100
To: Jason Anderssen <janderssen at exactal.com<mailto:janderssen at exactal.com>>
Subject: Re: [Mesa-users] Texture coordinates are all zero

Hey -

Brian means - https://github.com/apitrace/apitrace if you run your application through it, it will allow you to capture a full list of all opengl calls, which brian can then run locally to reproduce the problem.

Best Regards,

On 22 October 2014 01:20, Jason Anderssen <JAnderssen at exactal.com<mailto:JAnderssen at exactal.com>> wrote:
Hi Brian,

Thank you for your response.
I am kind of new to Mesa, so please forgive my ignorance:-)
Do I build it with this export (soft pipe)?

What kind of apitrace do you mean, a trace of all the calls via codeXL ?,
or is there a special tool that Mesa dev¹s use?

Cheers and thank you in advance.
Jason


On 22/10/2014 9:15 am, "Brian Paul" <brianp at vmware.com<mailto:brianp at vmware.com>> wrote:

>On 10/21/2014 03:28 PM, Jason Anderssen wrote:
>> Hi all,
>>
>> In Mesa 3D (Windows software llvm) all our texture coordinates are
>> coming through as zero.
>> Our same code works fine with ATI, NVIDIA, and even Angle (which I know
>> uses Direct3D under the covers, but it is an OpenGL ES compliant
>>wrapper).
>>
>> To verify this, I simply in the shader checked if the texcoord.s is >
>> 0.5 and color green, else blue, and sure enough half the image is green
>> and half is blue with the other drivers, but with Mesa, it is entirely
>> blue. (entirely same program and exe, just different opengl32.dll)
>>
>> Any ideas what could be causing this?
>> Any help would be very appreciated.
>
>Can you make an apitrace of the problem?  Have you tried with softpipe
>(export GALLIUM_DRIVER=softpipe)?
>
>-Brian
>
>

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--
Viral
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Viral Patel, Principal Software Developer, ANSYS UK Ltd.
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