[osg-users] Please test OpenSceneGraph master in prep for 3.5.6 dev release

[Robert Osfield]

Hi Li,

I have just added the StateSetManipulator to the osgshapde example to
see if back face culling is the reason, what I found is that the
windings on the triangles are the reverse of what they should be.  Is
this probably down to a recent change to avoid using GL_QUADS for
GLES/GL3 builds.  I'll have a look at fixing this.

This winding issue "might" be what is causing the problems you are
seeing, it would be worth disabling back facing culling in your app to
see if that changes things.

Robert.



On 28 March 2017 at 16:02, Robert Osfield <robert.osfield at gmail.com> wrote:
> Hi Li,
>
> How are you rendering the height field?
>
> Does the osgshape example work OK for you?
>
> Robert.
>
> On 28 March 2017 at 15:13, Li Chi <s12345uperman at sohu.com> wrote:
>> Hi Robert,
>>
>> When I create a heightfield (640x320) the generated mesh distorted, please take a look at the attached picture.
>>
>> ...
>>        heightfield->allocate(640, 320);
>>        heightfield->setXInterval(1.0f);
>>        heightfield->setYInterval(1.0f);
>>        heightfield->setSkirtHeight(1.0f);
>> ...
>>
>> ENV: Win10 + VS2015
>>
>> Thank you!
>>
>> Cheers,
>> Li
>>
>> ------------------
>> Read this topic online here:
>> http://forum.openscenegraph.org/viewtopic.php?p=70581#70581
>>
>>
>>
>>
>> Attachments:
>> http://forum.openscenegraph.org//files/heightfield_176.png
>>
>>
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