Hi Marlin,
Re-phrasing Roberts advice:
<code>
osg::Uniform* sampler = new osg::Uniform(osg::Uniform::SAMPLER_2D,
"NameOfTheSamplerInGLSL");
sampler->set(0); //assign unit
ss->addUniform(sampler);
ss->setTextureAttribute(0/*unit*/, texture0 ,osg::StateAttribute:ON );
osg::Uniform* sampler_1 = new osg::Uniform(osg::Uniform::SAMPLER_2D,
"NameOfTheSamplerInGLSL_1");
sampler->set(1); //assign unit
ss->addUniform(sampler);
ss->setTextureAttribute(1/*unit*/, texture1 ,osg::StateAttribute:ON );
</code>
This works fine with two sampler2D objects in GLSL.
HTH & Cheers
Sebastian
Am 19.04.2018 um 20:06 schrieb Rowley, Marlin R:
Hello,
I’ve been wracking my brain all day on trying to figure out how to do
this with no clear examples found online.
I have this set of calls in my C++:
mGroupState = mBoundGeometry->getOrCreateStateSet();
mGroupState->getOrCreateUniform("BaseTexSampler",osg::Uniform::SAMPLER_2D)->set(mBaseColor);
mGroupState->getOrCreateUniform("BaseWeight",osg::Uniform::FLOAT)->set(mBaseWeight);
mGroupState->setTextureAttributeAndModes(BASE_TEXTURE_UNIT, mBaseColor,osg::StateAttribute::ON);
I’ve bound this base texture to texture unit (BASE_TEXTURE_UNIT = 1).
Later in the code, I have this in another function if I create another
layer with another texture:
mGroupState->getOrCreateUniform("TexLayerSampler0",osg::Uniform::SAMPLER_2D)->set(tex);
mGroupState->setTextureAttribute(BASE_TEXTURE_UNIT+1,tex,osg::StateAttribute::ON);
Where I’ve created a second texture and want it to reside in texture unit 2.
However, in my shader code when indexing the TexLayerSampler0, I only
get base texture.
finalColor = texture(TexLayerSampler0, LayeredTexCoords[0].st);
Which is wrong. I’m stil trying to figure out OpenGL and how it works
along with OSG so sorry for the inexperience.
-M
----------------------------------------
Marlin Rowley
Software Engineer, Staff
cid:image002.jpg@01D39374.DEC5A2E0
/Missiles and Fire Control/
972-603-1931 (office)
214-926-0622 (mobile)
marlin.r.row...@lmco.com <mailto:marlin.r.row...@lmco.com>
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