glamor requires at least 128 instructions (64 reported)

[Michel Dänzer]

On 2018-09-10 9:58 a.m., Felix Miata wrote:
> Michel Dänzer composed on 2018-09-10 09:24 (UTC+0200):
> 
>> Felix Miata wrote:
> 
>>> No google hits describe why this happens or what can be done to avoid it. How
>>> can one determine whether this is absent software, broken software, or
>>> unsupported GPU?
> 
>> Unsupported GPU.
> 
> I figured as much, but I worded my question here as I did on purpose, trying to
> elicit self-determination information. In the instant case I was really asking
> on behalf of (trying to help) someone who is using an X1400 GPU getting only
> black 800x600 output on his external display, but I've run into this error
> message multiply before without ever finding out why glamor doesn't find the 128
> instructions it requires.

Because the GPU is too old to support that many instructions in a shader.


>> The recommended driver for ATI/AMD GPUs using the radeon kernel driver
>> is the xf86-video-ati radeon driver, which supports hardware
>> acceleration for your GPU via EXA.
> 
> Does this apply to all ATI GPUs too old for the xf86-video-amdgpu driver? How
> can a user make such a determination? Does one need to ask a developer for each
> GPU one comes across that fails with the default/integrated driver? Can one use
> PCI IDs or something else in a lookup table somewhere?

If the radeon and amdgpu drivers are installed, the appropriate one is
used by default automagically.


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer