Using the Intel Vulkan driver, we've found some cases where SpvOpSelect
is returning -0.0 (negative zeros) instead of normal 0.0 depending on
the arguments.
I'm wondering if "SpvOpSelect x, a, b" for floats is being implemented
with something like "a*x + b*(1-x)" ? That might explain where
On 11/17/20 9:25 AM, Brian Paul wrote:
>
> Using the Intel Vulkan driver, we've found some cases where SpvOpSelect
> is returning -0.0 (negative zeros) instead of normal 0.0 depending on
> the arguments.
Do you have a specific test case that fails?
It seems like on some platforms there was an er
On 11/17/2020 11:49 AM, Ian Romanick wrote:
On 11/17/20 9:25 AM, Brian Paul wrote:
Using the Intel Vulkan driver, we've found some cases where SpvOpSelect
is returning -0.0 (negative zeros) instead of normal 0.0 depending on
the arguments.
Do you have a specific test case that fails?
Yeah,
On Tue, Nov 17, 2020 at 9:56 PM Brian Paul wrote:
>
> On 11/17/2020 11:49 AM, Ian Romanick wrote:
> > On 11/17/20 9:25 AM, Brian Paul wrote:
> >>
> >> Using the Intel Vulkan driver, we've found some cases where SpvOpSelect
> >> is returning -0.0 (negative zeros) instead of normal 0.0 depending on
On 11/18/2020 02:49 AM, Connor Abbott wrote:
On Tue, Nov 17, 2020 at 9:56 PM Brian Paul wrote:
On 11/17/2020 11:49 AM, Ian Romanick wrote:
On 11/17/20 9:25 AM, Brian Paul wrote:
Using the Intel Vulkan driver, we've found some cases where SpvOpSelect
is returning -0.0 (negative zeros) instea
