[Mesa-dev] GLSLstd450NMin/NMax/NClamp

Brian Paul brianp at vmware.com
Wed Nov 18 21:05:50 UTC 2020

On 11/17/2020 01:59 PM, Brian Paul wrote:
> On 11/17/2020 11:45 AM, Ian Romanick wrote:
>> On 11/17/20 9:25 AM, Brian Paul wrote:
>>> It appears these SPIR-V extension functions don't behave as they should
>>> on Intel (don't know about other Vulkan drivers).
>>> They're supposed to be NaN-aware such that if one argument is NaN, the
>>> other argument is returned.  From our testing, it looks like NMax works
>>> as expected, but not NMin or NClamp.
>> Do you have some specific test cases that fail?
> Yeah, but they come from WHCK and I don't have a small test case.
> I'll try your patch series and see what happens.
> -Brian

I'm using your patch and I'm also making use of 
VK_KHR_shader_float_control but neither has helped.  Though, the later 
does help with some issues in Nvidia.


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