Hello, I have been having some trouble rendering textured models with shaders. I am a little confused about how to set the sampler uniform to the textures.
Also, from my understanding, if a vertex shader is not specified that functionality is pushed to the fixed pipeline? Here is what I have. Application: Code: #include <osgViewer/Viewer> #include <osgDB/ReadFile> #include <osgDB/FileUtils> #include <iostream> #include <string> /* loadShaderSource from http://www.openscenegraph.org/projects/osg/wiki/Support/Tutorials/ShadersIntroduction */ bool loadShaderSource(osg::Shader* obj, const std::string& fileName ) { std::string fqFileName = osgDB::findDataFile(fileName); if( fqFileName.length() == 0 ) { std::cout << "File \"" << fileName << "\" not found." << std::endl; return false; } bool success = obj->loadShaderSourceFromFile( fqFileName.c_str()); if ( !success ) { std::cout << "Couldn't load file: " << fileName << std::endl; return false; } else { return true; } } int main(int argc, char ** argv) { osgViewer::Viewer viewer; osg::ref_ptr<osg::Group> root = new osg::Group(); osg::ref_ptr<osg::Node> snowplow = osgDB::readNodeFile("PlowModel/Plow_Main.DAE"); osg::ref_ptr<osg::StateSet> snowplowState = snowplow->getOrCreateStateSet(); /// load and compile shader osg::ref_ptr<osg::Program> program = new osg::Program(); osg::ref_ptr<osg::Shader> fragshader = new osg::Shader(osg::Shader::FRAGMENT); program->addShader( fragshader ); loadShaderSource( fragshader, "texture_fragment.glsl"); osg::ref_ptr<osg::Uniform> baseTexture = new osg::Uniform("textureSampler", 0); snowplowState->addUniform( baseTexture ); snowplowState->setAttributeAndModes( program, osg::StateAttribute::ON ); root->addChild(snowplow.get()); viewer.setSceneData( root.get() ); return viewer.run(); } Shader: Code: /************************/ /* added for texturing */ /************************/ uniform sampler2D textureSampler; /************************/ void main() { /************************/ /* added for texturing */ /************************/ vec3 texturedColor = vec3 (texture2D (textureSampler, gl_TexCoord[0].st)); /************************/ /*************************/ /* changed for texturing */ /* gl_FragColor = gl_Color; */ gl_FragColor = vec4 (texturedColor.rg, 1.0, 1.0); } Thanks for your help! Michele ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=16499#16499 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
