Good evening ^^
I tried to paste some code from a co-worker but it doesnt seem to work and I
dont know why:
Main.cpp:
Code:
#include <osgViewer/Viewer>
#include <osgViewer/ViewerEventHandlers>
#include <osgGA/StateSetManipulator>
#include <osgDB/ReadFile>
#include <osg/Uniform>
#include <osg/Geode>
#include <osg/Node>
#include <osg/Group>
#include <osg/Vec3>
#include <osg/Vec4>
#include <osg/ShapeDrawable>
#include <osg/Shader>
#include <osg/Program>
#include <osg/ref_ptr>
#include <iostream>
int main(int ac, char **av)
{
osg::Vec4 red(1.0, 0.0, 0.0, 1.0);
osg::setNotifyLevel(osg::NOTICE);
// Viewer init
osgViewer::Viewer viewer;
viewer.addEventHandler(new
osgGA::StateSetManipulator(viewer.getCamera()->getOrCreateStateSet()));
viewer.addEventHandler(new osgViewer::StatsHandler());
//viewer.addEventHandler(new osgViewer::ThreadingHandler);
viewer.addEventHandler(new osgViewer::WindowSizeHandler);
viewer.setUpViewInWindow(100, 100, 800, 600);
//root
osg::Group* root = NULL;
root = new osg::Group();
//objet de la scene
osg::Geode* MaGeode=new osg::Geode();
// Sphere
osg::ShapeDrawable* sd = new osg::ShapeDrawable;
osg::Sphere* sphere = new osg::Sphere(osg::Vec3(0.0f, 0.0f, 0.0f),
1.5f);
sd->setShape(sphere);
sd->setColor(red);
MaGeode->addDrawable(sd);
//code to load and apply basic shader
osg::StateSet* widgetState = MaGeode->getOrCreateStateSet();
osg::ref_ptr<osg::Program> pgm = new osg::Program;
//Read the shader
osg::Shader* magnifierFrag = osgDB::readShaderFile(osg::Shader::FRAGMENT,
"point.frag");
if (magnifierFrag == NULL)
{
osg::notify(osg::NOTICE) << "Effect Not Supported !" << std::endl;
return 0;
}
pgm->addShader(magnifierFrag);
widgetState->addUniform( new osg::Uniform( "x", 50 ));
widgetState->addUniform( new osg::Uniform( "y", 50 ));
widgetState->addUniform(new osg::Uniform("drawWidth", 1));
widgetState->addUniform(new osg::Uniform("drawColor",
osg::Vec4(255,0,0,255)));
widgetState->setAttributeAndModes(pgm, osg::StateAttribute::ON );
root->addChild(MaGeode);
viewer.setSceneData(root);
viewer.run();
return (0);
}
I thought it was the includes but I have included everything.
The program runs without the part on the shaders.
I have my red Sphere.
But as soon as i input the shader part, i have the error "Effect Not Supported
!"
Here is the shader:
Code:
#version 110
uniform vec4 drawColor;
uniform int drawWidth;
uniform int x;
uniform int y;
void main(void)
{
gl_FragColor = gl_Color;
gl_FragColor.w = 1.0;
if (x >= int(gl_FragCoord.x)-drawWidth && x <=
int(gl_FragCoord.x)+drawWidth &&
y >= int(gl_FragCoord.y)-drawWidth && y <=
int(gl_FragCoord.y)+drawWidth)
{
gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
}
}
Sorry if my mistake is so obvious, but it's out of my range for the moment.
Thank you if you can help!
I'll come back tomorrow.
Have a nice evening!
Ps: I just noticed that i dont know what are: drawWidth and drawColor. But if
it's not the main problem, can you tell me?
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=15744#15744
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