FGFS-4.1/OpenSceneGraph
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Added assignment of hieghts texture coords

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This commit is contained in:
Robert Osfield
2007-04-03 19:18:20 +00:00
parent 31d9f40a2f
commit 86e20e1659
1 changed files with 60 additions and 47 deletions
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107
src/osgTerrain/GeometryTechnique.cpp
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@@ -128,6 +128,14 @@ void GeometryTechnique::init()
_geometry->setNormalArray(normals);
_geometry->setNormalBinding(osg::Geometry::BIND_PER_VERTEX);
osg::FloatArray* heights = 0;
if (colorTF)
{
heights = new osg::FloatArray(numVertices);
_geometry->setTexCoordArray(1, heights);
}
// allocate and assign tex coords
osg::Vec2Array* texcoords = 0;
if (colorLayer)
@@ -181,6 +189,10 @@ void GeometryTechnique::init()
}
if (heights)
{
(*heights)[iv] = ndc.z();
}
// compute the local normal
osg::Vec3d ndc_one( (double)i/(double)(numColumns-1), (double)j/(double)(numColumns-1), 1.0);
@@ -225,55 +237,56 @@ void GeometryTechnique::init()
stateset->setTextureAttributeAndModes(0, texture2D, osg::StateAttribute::ON);
}
osg::TransferFunction1D* tf = dynamic_cast<osg::TransferFunction1D*>(colorTF);
if (tf)
}
osg::TransferFunction1D* tf = dynamic_cast<osg::TransferFunction1D*>(colorTF);
if (tf)
{
osg::notify(osg::NOTICE)<<"Requires TransferFunction"<<std::endl;
osg::Image* image = tf->getImage();
osg::StateSet* stateset = _geode->getOrCreateStateSet();
osg::Texture1D* texture1D = new osg::Texture1D;
texture1D->setImage(image);
texture1D->setResizeNonPowerOfTwoHint(false);
texture1D->setFilter(osg::Texture::MIN_FILTER, osg::Texture::NEAREST);
texture1D->setFilter(osg::Texture::MAG_FILTER, osg::Texture::NEAREST);
stateset->setTextureAttributeAndModes(1, texture1D, osg::StateAttribute::ON);
osg::Program* program = new osg::Program;
stateset->setAttribute(program);
// get shaders from source
std::string vertexShaderFile = osgDB::findDataFile("lookup.vert");
if (!vertexShaderFile.empty())
{
osg::notify(osg::NOTICE)<<"Requires TransferFunction"<<std::endl;
osg::Image* image = tf->getImage();
osg::StateSet* stateset = _geode->getOrCreateStateSet();
osg::Texture1D* texture1D = new osg::Texture1D;
texture1D->setImage(image);
texture1D->setResizeNonPowerOfTwoHint(false);
texture1D->setFilter(osg::Texture::MIN_FILTER, osg::Texture::NEAREST);
texture1D->setFilter(osg::Texture::MAG_FILTER, osg::Texture::LINEAR);
stateset->setTextureAttributeAndModes(1, texture1D, osg::StateAttribute::ON);
osg::Program* program = new osg::Program;
stateset->setAttribute(program);
// get shaders from source
std::string vertexShaderFile = osgDB::findDataFile("lookup.vert");
if (!vertexShaderFile.empty())
{
program->addShader(osg::Shader::readShaderFile(osg::Shader::VERTEX, vertexShaderFile));
}
else
{
osg::notify(osg::NOTICE)<<"Not found lookup.vert"<<std::endl;
}
std::string fragmentShaderFile = osgDB::findDataFile("lookup.frag");
if (!fragmentShaderFile.empty())
{
program->addShader(osg::Shader::readShaderFile(osg::Shader::FRAGMENT, fragmentShaderFile));
}
else
{
osg::notify(osg::NOTICE)<<"Not found lookup.frag"<<std::endl;
}
osg::Uniform* sourceSampler = new osg::Uniform("sourceTexture",0);
stateset->addUniform(sourceSampler);
osg::Uniform* lookupTexture = new osg::Uniform("lookupTexture",1);
stateset->addUniform(lookupTexture);
osg::Uniform* minValue = new osg::Uniform("minValue", tf->getMinimum());
stateset->addUniform(minValue);
osg::Uniform* inverseRange = new osg::Uniform("inverseRange", 1.0f/(tf->getMaximum()-tf->getMinimum()));
stateset->addUniform(inverseRange);
program->addShader(osg::Shader::readShaderFile(osg::Shader::VERTEX, vertexShaderFile));
}
else
{
osg::notify(osg::NOTICE)<<"Not found lookup.vert"<<std::endl;
}
std::string fragmentShaderFile = osgDB::findDataFile("lookup.frag");
if (!fragmentShaderFile.empty())
{
program->addShader(osg::Shader::readShaderFile(osg::Shader::FRAGMENT, fragmentShaderFile));
}
else
{
osg::notify(osg::NOTICE)<<"Not found lookup.frag"<<std::endl;
}
osg::Uniform* sourceSampler = new osg::Uniform("sourceTexture",0);
stateset->addUniform(sourceSampler);
osg::Uniform* lookupTexture = new osg::Uniform("lookupTexture",1);
stateset->addUniform(lookupTexture);
osg::Uniform* minValue = new osg::Uniform("minValue", tf->getMinimum());
stateset->addUniform(minValue);
osg::Uniform* inverseRange = new osg::Uniform("inverseRange", 1.0f/(tf->getMaximum()-tf->getMinimum()));
stateset->addUniform(inverseRange);
}
_dirty = false;