[osg-users] Render to Texture without clamping values

[Philipp Meyer]

Hi,

I did some more testing and it turns out that I can set a texel to a color with values > 1.0 just fine in the C++ code.
When using image->setColor(osg::Vec4(1,2,3,4),x,y,0) before reading it with getColor, I can get results > 1.0.

Does that mean that the shader itself is clamping the values somehow? Or does it have to do with the internal texture copy from GPU to host memory?

Thank you!

Cheers,
Philipp

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http://forum.openscenegraph.org/viewtopic.php?p=67600#67600