Hi

So I've tried running the renderer on  NVIDIA Tesla K40, the three renderers Slicing, 2D Slicing, and Ray Caster work perfectly, however, Grid Leaper, still doesn't seem to work and is giving a segmentation fault.

So if you could suggest where this 2D Transfer function is applied for the other renderers ( preferably RayCaster )

PFA the screenshot of the specs of my graphic card on the server, also am using vglrun to generate this image from the GPU.

Regards
Aashay Mittal

On Mon, Jun 27, 2016 at 9:47 AM, Aashay Mittal < > wrote:

I have tried running it on NVIDIA Tesla K40c and NVIDIA GeForce GT 720 M. ( I have an Ubuntu 14.04 machine )
But on both, grid leaper rendering gives an error message saying ImageVis does not support the GPU.
Could you please mention which graphic card is required for the same?

Regards
Aashay Mittal

2014001
Non-Tech Events OC | Esya'16

You're probably using one of the other renderers.  Make sure to enable the grid leaper in the settings first.

There's a bug in the last release where you need to enable 'experimental settings' and then restart before it'll even display the option for that renderer.  IIRC it's fixed in master.

-tom

On June 25, 2016 1:30:04 PM PDT, Aashay Mittal < > wrote:
>hi,
>thanks for the reply.
>I saw the other similar discussion as well and hence, looked into
>the "GLGridLeaper-Method-2D-L.glsl" and other "GLGridLeaper*" files.
>All of
>these contain a function, *ComputeColorFromVolume( )* that *returns a
>vec4
>containing the RGBA values*, to "GLGridLeaper-blend.glsl".
>However, i tried to tweak the same by supplying a vec4(0,0,0,0) to all
>and
>check if this function is actually being called, but no visible changes
>appear.
>Also, commands like printf( ),cout do not seem to work, indicating
>these
>files are not being accessed.
>
>
>
>*RegardsAashay Mittal*
>2014001
>Non-Tech Events OC | Esya'16
>
>On Sun, Jun 26, 2016 at 1:03 AM, tom (mobile) < >
>wrote:
>
>> Hi, welcome.
>>
>> Timely.  Someone else asked about the exact same thing ~a month ago.
>> Check the archives for details, but basically: this happens in glsl
>> shaders, I would recommend the GLGridLeaper* ones since that renderer
>is
>> the best one.  But, as far as I'm aware that still requires you have
>a
>> newish NVIDIA card and Linux/Windows, still.
>>
>> HTH,
>>
>> -tom
>>
>> On June 25, 2016 10:50:01 AM PDT, Aashay Mittal
>< >
>> wrote:
>> >Hi
>> >I am a student at IIIT Delhi (India), and am working on a project on
>> >transfer
>> >functions.
>> >ImageVis3D seems to be the best software that is open-source and
>> >supports the
>> >gradient based 2D transfer function.
>> >I however, want to modify the transfer function applied to apply
>> >transfer
>> >function based on their 3D spatial location.
>> >(i.e. i want to assign a voxel denoted by P(x,y,z) an RGBA mapping
>> >instead of
>> >a point indicated by (I,f'(I) ).
>> >I've been looking into the software from quite a few days, but since
>am
>> >a
>> >student and new to graphics and rendering, haven't been able to have
>> >much
>> >success in the same.
>> >So if you could please point out the files where this mapping
>between
>> >points
>> >and color assigned to them is taking place.
>> >
>> >Regards
>>
>>