osg.Texture2DArray
是一个用于加载并显示纹理贴图的类,它可以处理多个纹理图像,并将它们组合成一个纹理阵列。该类是 OpenSceneGraph 中的一个核心类,可用于创建复杂的纹理效果和材质。
osg.Texture2DArray
支持以下特点:
以下是 osg.Texture2DArray
的一些常见用法:
osg::ref_ptr<osg::Texture2DArray> textureArray = new osg::Texture2DArray;
textureArray->setTextureSize(width, height, numLayers);
textureArray->setInternalFormat(GL_RGBA);
textureArray->setSourceType(GL_UNSIGNED_BYTE);
textureArray->setSourceFormat(GL_RGBA);
textureArray->setWrap(osg::Texture::WRAP_S, osg::Texture::REPEAT);
textureArray->setWrap(osg::Texture::WRAP_T, osg::Texture::REPEAT);
textureArray->setMinFilter(osg::Texture::LINEAR_MIPMAP_LINEAR);
textureArray->setMagFilter(osg::Texture::LINEAR);
textureArray->setUseHardwareMipMapGeneration(true);
textureArray->setBorderColor(osg::Vec4(0.0, 0.0, 0.0, 1.0));
textureArray->setImageArray(numLayers, textureWidth, textureHeight, 1, GL_RGBA, GL_UNSIGNED_BYTE, imageData, osg::Image::NO_DELETE, i);
osg::ref_ptr<osg::Geometry> geometry = new osg::Geometry;
geometry->setVertexArray(vertices);
geometry->setColorArray(colors, osg::Array::BIND_PER_VERTEX);
geometry->setTexCoordArray(0, texCoords, osg::Array::BIND_PER_VERTEX);
geometry->addPrimitiveSet(primitive);
osg::ref_ptr<osg::Geode> geode = new osg::Geode;
geode->addDrawable(geometry);
osg::StateSet* stateset = geode->getOrCreateStateSet();
stateset->setTextureAttributeAndModes(0, textureArray.get(), osg::StateAttribute::ON);
osg.Texture2DArray
是 OpenSceneGraph 中的一个基础类,常常与其他类一起使用,如 osg::Geometry
、osg::StateSet
、osg::Program
等。对该类的深入理解对于 OpenSceneGraph 的学习十分必要。