如何消除OSG纹理映射产生黑边

vruser

在OSG 2.4中，将纹理映射到一个四边形上，在纹理的边缘，即纹理坐标u,v为0或1时，会产生一个黑边，如何消除。代码如下：

osg::Image* image = osgDB:: readImageFile("earthmap1k.jpg");
if (!image) return NULL;

osg::StateSet* stateset = new osg:: StateSet;
osg::Texture2D* texture = new osg:: Texture2D;
texture->setImage(image);
stateset->setTextureAttributeAndModes(0, texture, osg:: StateAttribute::ON );
stateset->setMode( GL_LIGHTING, osg:: StateAttribute:ROTECTED );

osg::Geode* geode = new osg::Geode();
geode->setStateSet(stateset);

osg::Geometry* Geom = new osg::Geometry();
osg::Vec3Array* vertices = new osg::Vec3Array;
osg::Vec2Array* texCoords = new osg::Vec2Array;

vertices->push_back( osg::Vec3(-100, 0, -100) );
vertices->push_back( osg::Vec3(-100, 0, 100) );
vertices->push_back( osg::Vec3(0, 0, 100) );
vertices->push_back( osg::Vec3(0, 0, -100) );

texCoords->push_back(osg::Vec2(0, 0));
texCoords->push_back(osg::Vec2(0, 1));
texCoords->push_back(osg::Vec2(1, 1));
texCoords->push_back(osg::Vec2(1, 0));

Geom->setVertexArray(vertices);
Geom->addPrimitiveSet(new osg:rawArrays(osg:: PrimitiveSet:: POLYGON, 0, vertices->size()));

osg:: Vec4Array* colors = new osg:: Vec4Array;
colors->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
Geom->setColorArray(colors);
Geom->setColorBinding(osg:: Geometry:: BIND_OVERALL);

Geom->setTexCoordArray(0, texCoords);

geode->addDrawable(Geom);

array

对于texture，设置osg::Texture::setWrap试一试

vruser

解决了，使用 texture->setWrap(osg::Texture::WRAP_S, osg::Texture::CLAMP_TO_EDGE);

多谢！

soda

现在太多做广告的了，好烦人啊，好好的讨论区被搞得污烟瘴气的。

OSG论坛管理员

楼上，是不是有什么论坛什么插件治这个？有什么办法吗？这几天也是被这个弄的恶心的不行

soda

回FreeSouth，我没有搞过论坛，不太清楚怎么治这个东西。。。