[osg-users] Scale-invarient lighting

Robert Osfield robert.osfield at gmail.com
Wed Aug 31 01:04:51 PDT 2016

Hi Dave,

Are you defining normals for your points?

Any chance there is a Transform node in the scale in the scene graph
that is scaling the normals messing up the fixed function lighting


On 31 August 2016 at 08:13, Dave Rush <dave at laniakea.zone> wrote:
> I should probably take a step back and explain why I was using a positioned light sources in the first place. Basically when I add a scene populated with white GL_POINTS programmed in:
> - using the default directional light, the points (which should be white in reality) show up as black.
> - using a positioned light source, the points show up correctly as white.
> I'm thinking this may actually be an nvidia driver bug (linux nvidia-355), since when using an intel card the points always show up as white regardless of light source type. Does this make sense?
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=68493#68493
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