The shader needs to receive a sampler uniform containing the integer value
of a texture unit to use.
The right way to do this would be to scan the subgraph of the model for
state sets containing enabled texture units. Use a node visitor here. For
each of these texture units, create a uniform
Great thanks guys!
This is the kind of lead I was looking for. Ill take a look at the shaderGen
and I also have been poking around the fbxsdk which might help as well.
Cheers! If I find a good solution and the time Ill try and post how I managed
to get it working here later on.
Thank
hmm just googled osg ShaderGen and found this:
http://trac.openscenegraph.org/projects/osg//browser/OpenSceneGraph/branches/OpenSceneGraph-3.2/src/osgUtil/ShaderGen.cpp
This seems to create shader code based on some OSG states, but I have no
idea how complete this implementation is. Also I have
Ok so now back to the original intent with this question.
So I can now attach a texture to my hand model with a vertex and fragment
shader, which is great! I load the texture via its file path and send it along
to the shaders.
However I was hoping to find a way to do this in a different
Hi Chris,
osg::ref_ptrosg::Texture2D texture = model-GetEmbeddeFBXTexture();
I think you have to write NodeVisitor that will traverse your model and
extract the Texture from the StateSet. But you can also work with the
texture that is mapped in your FBX model. I didn't followed your
Hi Chris,
It's not possible to determine what error you have made from the snippets
included. The snippet of code you did include didn't show how or whether
you added the osg::Program to the StateSet, or whether you attached a
vertex shader.
I would recommend starting from one of the examples
Hey Robert, thanks for answer, hope you had a great weekend!
I've been trying to read up on vertex shaders and fragment shaders and maybe I
am not quite understanding.
Im trying to attach a very basic fragment shader, but I can't seem to get it to
work and I am not sure why.
I keep
Aha, ok, I wasn't clear enough.
I literally injected that code snippet into the osganimationhardware.cpp
example. I just thougt it would be redundant to repost the entire example.
If you shove my code right at in around line 122, thats where I have made the
edits.
Otherwise my entire
Hi Chris,
Still can't spot what might be wrong. Try running the application with the
OSG_NOTIFY_LEVEL env var set to DEBUG and then capture the output to the
console. The shader strings passed to OpenGL should be printed out. This
might give some clues.
Robert.
On 26 January 2015 at 15:18,
Ok I solved my problem with the fragment shader.
Stupid but I realized that if I didn't instanciate the fragment shader within
the if conditional where it checks to make sure the program is valid or not it
will add the same fragment shader twice to the program, hence the duplicate
main error.
Hi Chris,
I don't now how the scene graph is set up so can't answer specifics, but in
general if you want texturing to appear then the fragment shader will need
to apply the texture. I'd guess that the current fragment shader doesn't
have texturing in it, so just add this.
Robert.
On 23
I run skinning.vert on my fbx model which has rigging. Ive attached the shader
program as in the osg hardware animation example.
I have a texture that accompanies the hand model in the FBX file that I export
from 3Ds max. If I don't attach the shader program the hand models show up
with the
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