GLS language errors (Was: Internal error: Error loading stock shader FillRoundRect_LinearGradient,_PAD on Vivante ARM)

[Kevin Rushforth]

I don't find a bug relating to this, so it seems the bug was never filed.

Can you please file one?

Thanks.

-- Kevin


Erik De Rijcke wrote:
> Hi all,
>
> Any follow up on this? I'm experiencing the same issue here (latest
> openjfx8 on wayland using mesa egl/gles2).
>
> Erik
>
> On Wed, Mar 2, 2016 at 6:36 PM, Chien Yang <chien.yang at oracle.com> wrote:
>
>   
>> Hi Maurice,
>>
>> Can you please file a JIRA on this issue?
>>
>> Thanks,
>> - Chien
>>
>>
>> On 3/1/16, 11:45 PM, Maurice wrote:
>>
>>     
>>> Jim,
>>>
>>> A solution in line of that of Johan Vos [1] works. JavaFX can be run and
>>> doesn't crash on startup when compiling the shaders. I think they should be
>>> taken into account for at least JavaFX 9, as it reduces a very serious bug
>>> to a possible optimization.
>>>
>>> Maurice.
>>>
>>> [1] https://bitbucket.org/javafxports/8u60-rt/commits/595633bbaa
>>> e36f98d85d47d276294442ea43488c
>>>
>>> Op 02-03-16 om 02:22 schreef Jim Graham:
>>>
>>>       
>>>> The thing about this use of pixcoord is that the same information can be
>>>> supplied much more efficiently as a pair of texture coordinates.  The value
>>>> of pixcoord ends up being a linear equation over the area of the primitive
>>>> which is exactly what texture coordinate samples give you for free.
>>>>
>>>> I believe some of the other gradient methods use that texture coordinate
>>>> technique to avoid having to use pixcoord, but the issue is that we've
>>>> hard-coded all of our VertexBuffer streams to have exactly 2 sets of
>>>> texture coordinates and so you only get room to pass in so many values and
>>>> these (i.e. this family of) shaders are already using those texture
>>>> coordinates to pass in too many values to leave enough free for the
>>>> gradient fractions.
>>>>
>>>> This shader could be avoided, I believe, by rasterizing the shape into
>>>> an alpha mask and using one of the alpha mask gradient shaders that doesn't
>>>> rely on pixcoord.  In fact, in some embedded environments these shaders
>>>> have so many computations per pixel that running the shape rasterizer on
>>>> the CPU actually wins performance (and especially if you cache the alpha
>>>> masks as some of our NGShape nodes do)...
>>>>
>>>>             ...jim
>>>>
>>>> On 3/1/16 9:10 AM, Maurice wrote:
>>>>
>>>>         
>>>