如何在openscenegraph中应用纹理到模型

How to apply textures to a model in openscenegraph?

本文关键字：纹理 模型 应用 openscenegraph      更新时间：2023-10-16

我有一个flt模型，它引用了*tga纹理文件。我把这些*转换了。Tga文件到*。使用Nvidia纹理工具(nvdxt.exe)制作dds文件。

我知道如何阅读和应用单个。dds纹理文件到我的模型(terrain.flt):-

osg::ref_ptr<osg::Node> terrainModel (osgDB::readNodeFile("c:/my_folder/terrain.flt"));
osg::ref_ptr<osg::Texture2D> tex (new osg::Texture2D);
osg::ref_ptr<osg::Image> image (osgDB::readImageFile("c:/my_folder/road.dds "));
tex->setImage(image.get());
osg::ref_ptr<osg::StateSet> state=terrainModel->getOrCreateStateSet(); 
state->setTextureAttributeAndModes(0,tex.get(),osg::StateAttribute::ON);

但我不知道如何阅读和应用所有这些纹理*。DDS到我的模型(terrain.flt)。

my attempt:-

osg::ref_ptr<osg::Node> terrainModel (osgDB::readNodeFile("c:/my_folder/terrain.flt"));
osg::ref_ptr<osg::Texture2DArray> texArray (new osg::Texture2DArray);
for(int i=0;i<my_folder_files.size();i++)
{
   osg::ref_ptr<osg::Image> image (osgDB::readImageFile("c:/my_folder/"+file(i)));
   texArray->setImage(i,image);
}  
osg::ref_ptr<osg::StateSet> state=terrainModel->getOrCreateStateSet(); 
state->setTextureAttributeAndModes(0,texArray.get(),osg::StateAttribute::ON);

但是，它不工作。帮助我。

osg::ref_ptr<osg::Node> terrainModel (osgDB::readNodeFile("c:/my_folder/terrain.flt"));
osg::Texture2D* texture = new osg::Texture2D;
osg::ref_ptr<osg::Image> image (osgDB::readImageFile("c:/my_folder/road.dds "));
texture->setImage(image.get());
texture->SetWrap(osg::Texture2D::WrapParameter::wrap_s,osg::Texture2D::Wrapmode::Mirror);
texture->SetWrap(osg::Texture2D::WrapParameter::wrap_t,osg::Texture2D::Wrapmode::Mirror);
texture->SetWrap(osg::Texture2D::WrapParameter::wrap_r,osg::Texture2D::Wrapmode::Mirror);
texture->setFilter(osg::texture2D::FilterParameter::MIN_FILTER,osg::Texture2D::FilterMode::LINEAR);
texture->setFilter(osg::texture2D::FilterParameter::MAG_FILTER,osg::Texture2D::FilterMode::LINEAR);
osg::material *material = new osg::material;
osg::stateset *stateset = new osg::stateset;
stateset->setTextureAttribute(0,texture,osg::stateattribute::OVERRIDE);
stateset->setTextureMode(0,GL_TEXTURE_2D,osg::stateattribute::ON|osg::stateattribute::OVERRIDE);
stateset->setTextureMode(0,GL_TEXTURE_GEN_S,osg::stateattribute::ON|osg::stateattribute::OVERRIDE);
stateset->setTextureMode(0,GL_TEXTURE_GEN_T,osg::stateattribute::ON|osg::stateattribute::OVERRIDE);
stateset->setAttribute(material,osg::stateattribute::OVERRIDE);
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