[x3d-public] rendering the X3D standard...is it extensive enough

John Carlson yottzumm at gmail.com
Wed Oct 18 10:07:40 PDT 2017


I guess there's no way to get the graphics card vendors into line, except
to standardize the images output from the graphics cards.   Why don't we do
that?  Voltages anyone?

On Oct 18, 2017 1:00 PM, "John Carlson" <yottzumm at gmail.com> wrote:

> I mean, are we mathematicians or engineers?   We appear to be engineers.
> I'm a mathematician looking on in horror to what the engineers did to my
> wonderful computing device.
>
> On Oct 18, 2017 12:55 PM, "John Carlson" <yottzumm at gmail.com> wrote:
>
>> Here's the possible scenario, I have a vendor that says they meet the
>> standard, but have wildly different renderings between runs.   Do they get
>> the X3D blessing because they implement the format, or is there an image
>> standard that they much match, and who is doing the checking?  Is it
>> automated?   It would seem not.   What use is a standard which can't be
>> verified?
>>
>> Yes, I am aware of the X3D resources thumbnails, I'm just wondering about
>> any standard certification of browser renderings.
>>
>> I'm laughing too.  X3D appears to be a joke.
>>
>> John
>>
>> On Oct 18, 2017 12:45 PM, "John Carlson" <yottzumm at gmail.com> wrote:
>>
>>> The question becomes, can I expect a single browser to generate
>>> identical pixels between runs, and if not, how is testing done?
>>>
>>> Thanks,
>>>
>>> John
>>>
>>> On Oct 18, 2017 12:31 PM, "Greg Couch" <gregc at cgl.ucsf.edu> wrote:
>>>
>>>> On 10/18/2017 08:53 AM, John Carlson wrote:
>>>>
>>>>> I am wondering if the X3D standard is complete or extensive enough to
>>>>> provide for pixel perfect equality between browsers.   This is important
>>>>> for archiving.   Has this been a goal?
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Johb
>>>>>
>>>>
>>>> Thanks for the laugh.  The OpenGL/Vulkan/Direct3D/etc. specifications
>>>> have never required pixel perfect equality between graphics cards, so it
>>>> has not ever been a goal AFAIK.  Are they close?  Yes, very close, but not
>>>> pixel perfect.  The great thing about X3D is that you're archiving the
>>>> description of the scene not the image of the scene.
>>>>
>>>>    HTH,
>>>>
>>>>    Greg
>>>>
>>>
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