Sorry, was on a business trip for a while.
Here is my code (shortened a little):
osg::Group*rootNode=newosg::Group();
view->setSceneData(rootNode);
shadowedScene=newosgShadow::ShadowedScene;
shadowedScene->setReceivesShadowTraversalMask(ReceivesShadowTraversalMask);
shadowedScene->setCastsShadowTraversalMask(CastsShadowTraversalMask);
rootNode->addChild(shadowedScene.get());
objectSwitch=newosg::Switch;
shadowedScene->addChild(objectSwitch);
lightSource=newosg::LightSource;
lightSource->setLight(myLight);
lightSource->setReferenceFrame(osg::LightSource::ABSOLUTE_RF);
lightSource->setLocalStateSetModes(osg::StateAttribute::ON);
shadowedScene->addChild(lightSource.get());
osg::StateSet*stateset=objectSwitch->getOrCreateStateSet();
// setting uniforms etc. here
osg::Program*program=newosg::Program();
stateset->setAttribute(program);
program->addShader(Cl_ShaderGen::getShader(osg::Shader::VERTEX,forceGL3Mode,
...));program->addShader(Cl_ShaderGen::getShader(osg::Shader::GEOMETRY,forceGL3Mode,
...));program->addShader(Cl_ShaderGen::getShader(osg::Shader::FRAGMENT,forceGL3Mode,
...));
view->getCamera()->getGraphicsContext()->getState()->setUseModelViewAndProjectionUniforms(forceGL3Mode);
view->getCamera()->getGraphicsContext()->getState()->setUseVertexAttributeAliasing(forceGL3Mode);
If I use GL2 mode everything works like expected.
In GL3 mode without shadow technique everything works fine (using
geometry shader)
In GL3 mode assigning a shadow technique doesn't change anything i.e. no
shadow appears.
If I assign the schaders to the state set of shadowedScene in GL3 mode
without shadow technique
everything appears the normal way but when assigning a shadow technique
geometry shaders
don't do their work any more.
So my guess is that shadow technique just replaces the shaders.
Is my approach wrong? Do I do something in a non standard way?
Many thanks for hints and help.
- Werner -
Am 29.05.2015 um 18:53 schrieb Trajce Nikolov NICK:
Hard to say without seeing your code .... I have modified shaders for
the LSPSM. Can you share a sample app ?
On Fri, May 29, 2015 at 6:38 PM, Werner Modenbach
<[email protected] <mailto:[email protected]>> wrote:
Hi Nick,
I'm using LightSpacePerspective shadow technique as well.
But I set the shaders only inside the scene graph where reqired.
Do I have to set them anywhere else?
My graph looks like that:
*---------------
* | RootNode |
* ---------------
* / \
* ---------------
---------------------
* | ShadowScene | |evtl.
PPU-Prozessor|
* ---------------
---------------------
* / \
* --------------- ---------------
* | Switchnode | | LightSource
|
* --------------- ---------------
* / \\\
Am 29.05.2015 um 18:16 schrieb Trajce Nikolov NICK:
Hi Werner,
I am doing the same and using the LightSpacePerspective shadow
techinque. In your program you have to set your vertex and
fragment shaders as well, and it will be picked up correctly if
you set the masks for receiving/cast shadows .... So it should
work. As long as they are part of the top ShadowedScene
Nick
Nick
On Fri, May 29, 2015 at 5:56 PM, Werner Modenbach
<[email protected] <mailto:[email protected]>>
wrote:
Hi all,
My scene contains many objects, which are created by geometry
shaders.
So no vertices are created outside the graphics card for
those objects.
So I use
state->setUseVertexAttributeAliasing(true)
and
state->setUseModelViewAndProjectionUniforms(true)
Is it possible using a shadow technique in this case? If I'm
right the shadow technique installs it's own shaders.
Thanks for any hint.
- Werner -
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Phone: +49 241 475757-0
Fax: +49 241 475757-29
Web: http://texion.eu
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