Hi,
I ported my program from mingw and Code Blocks to Visual Studio 2010 Express
and found that I couldn't get uniform arrays to work. Has anyone experienced
this? I'm new to Visual Studio so I might have missed something.
I made a small test program that works on my old system but not on my new
system:
(sorry for the weird symbols and that the include dirs fell off)
Code:
#include <osg/Group>
#include <osgDB/ReadFile>
#include <osgViewer/Viewer>
#include <osgGA/TrackballManipulator>
int main( int argc, char **argv )
{
osg::setNotifyLevel( osg::WARN );
osg::Group *root = new osg::Group;
std::string url = "cow.osg";
osg::Node* modelNode = osgDB::readNodeFile( url );
//setup shaders
osg::Shader *vertshader = new osg::Shader( osg::Shader::VERTEX );
vertshader->loadShaderSourceFromFile( "uniformarray.vert" );
osg::Shader *fragshader = new osg::Shader( osg::Shader::FRAGMENT );
fragshader->loadShaderSourceFromFile( "uniformarray.frag" );
osg::Program *shaderprog = new osg::Program();
shaderprog->addShader( vertshader );
shaderprog->addShader( fragshader );
modelNode->getOrCreateStateSet()->setAttributeAndModes( shaderprog );
// Array uniform
osg::Uniform *arrayUFM = new osg::Uniform( osg::Uniform::FLOAT, "array", 2
);
arrayUFM->setElement( 0, 0.5f );
arrayUFM->setElement( 1, 1.0f );
modelNode->getOrCreateStateSet()->addUniform( arrayUFM );
root->addChild( modelNode );
// Graphics Context and Traits
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new
osg::GraphicsContext::Traits;
traits->x = 10;
traits->y = 10;
traits->width = 800;
traits->height = 600;
traits->doubleBuffer = true;
const std::string version( "3.1" );
traits->glContextVersion = version;
osg::ref_ptr<osg::GraphicsContext> gc =
osg::GraphicsContext::createGraphicsContext( traits.get() );
// Viewer
osg::ref_ptr<osgViewer::Viewer> viewer = new osgViewer::Viewer();
viewer->getCamera()->setGraphicsContext( gc.get() );
viewer->getCamera()->setViewport( new osg::Viewport( 0, 0, traits->width,
traits->height ) );
viewer->setSceneData( root );
viewer->setCameraManipulator( new osgGA::TrackballManipulator() );
viewer->run();
return 0;
}
Vertex shader:
Code:
#version 140
uniform mat4 osg_ModelViewProjectionMatrix;
in vec4 osg_Vertex;
void main()
{
gl_Position = osg_ModelViewProjectionMatrix * osg_Vertex;
};
Fragment shader using the array:
Code:
#version 140
uniform float array[2];
out vec4 fragData;
void main()
{
fragData = vec4( 1.0, array[0], array[1], 1.0 );
}
Old system:
OSG 3.0 (revision 12753)
MinGW and Code Blocks
NVIDIA GEFORCE 260
WIN 7
New system
OSG 3.0.1 (stable release)
Visual C++ 2010 Express
NVIDIA GEFORCE 680
WIN 7
Thank you!
Cheers,
David[/code]
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=50756#50756
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