FGFS-4.1/OpenSceneGraph
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Renamed the osgVolume::Layer/ImageDetails parameters RescaleIntercept and RescaleSlope to more general TexelOffset and TexelScale, and changed type to Vec4.

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Refactored the transfer function set up in RayTracedTechnique to prepare for new scale and offset uniforms.

Updated wrappers
This commit is contained in:
Robert Osfield
2009-09-03 13:40:50 +00:00
parent 43e3089417
commit fa84f280f6
6 changed files with 205 additions and 74 deletions
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59
src/osgVolume/RayTracedTechnique.cpp
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@@ -249,16 +249,28 @@ void RayTracedTechnique::init()
bool enableBlending = false;
if (tf)
{
osg::ref_ptr<osg::Texture1D> tf_texture = new osg::Texture1D;
tf_texture->setImage(tf->getImage());
tf_texture->setResizeNonPowerOfTwoHint(false);
tf_texture->setFilter(osg::Texture::MIN_FILTER, osg::Texture::LINEAR);
tf_texture->setFilter(osg::Texture::MAG_FILTER, osg::Texture::LINEAR);
tf_texture->setWrap(osg::Texture::WRAP_R,osg::Texture::CLAMP_TO_EDGE);
osg::ref_ptr<osg::Uniform> tf_sampler = new osg::Uniform("tfTexture",1);
stateset->setTextureAttributeAndModes(1, tf_texture.get(), osg::StateAttribute::ON);
stateset->addUniform(tf_sampler.get());
}
if (shadingModel==MaximumIntensityProjection)
{
enableBlending = true;
if (tf)
{
osg::Texture1D* texture1D = new osg::Texture1D;
texture1D->setImage(tf->getImage());
stateset->setTextureAttributeAndModes(1,texture1D,osg::StateAttribute::ON);
osg::Shader* fragmentShader = osgDB::readShaderFile(osg::Shader::FRAGMENT, "shaders/volume_tf_mip.frag");
if (fragmentShader)
{
@@ -295,17 +307,6 @@ void RayTracedTechnique::init()
if (tf)
{
osg::Texture1D* texture1D = new osg::Texture1D;
texture1D->setImage(tf->getImage());
texture1D->setResizeNonPowerOfTwoHint(false);
texture1D->setFilter(osg::Texture::MIN_FILTER, osg::Texture::LINEAR);
texture1D->setFilter(osg::Texture::MAG_FILTER, osg::Texture::LINEAR);
texture1D->setWrap(osg::Texture::WRAP_R,osg::Texture::CLAMP_TO_EDGE);
stateset->setTextureAttributeAndModes(1,texture1D,osg::StateAttribute::ON);
osg::Uniform* tfTextureSampler = new osg::Uniform("tfTexture",1);
stateset->addUniform(tfTextureSampler);
osg::Shader* fragmentShader = osgDB::readShaderFile(osg::Shader::FRAGMENT, "shaders/volume_tf_iso.frag");
if (fragmentShader)
{
@@ -341,17 +342,6 @@ void RayTracedTechnique::init()
if (tf)
{
osg::Texture1D* texture1D = new osg::Texture1D;
texture1D->setImage(tf->getImage());
texture1D->setResizeNonPowerOfTwoHint(false);
texture1D->setFilter(osg::Texture::MIN_FILTER, osg::Texture::LINEAR);
texture1D->setFilter(osg::Texture::MAG_FILTER, osg::Texture::LINEAR);
texture1D->setWrap(osg::Texture::WRAP_R,osg::Texture::CLAMP_TO_EDGE);
stateset->setTextureAttributeAndModes(1,texture1D,osg::StateAttribute::ON);
osg::Uniform* tfTextureSampler = new osg::Uniform("tfTexture",1);
stateset->addUniform(tfTextureSampler);
osg::Shader* fragmentShader = osgDB::readShaderFile(osg::Shader::FRAGMENT, "shaders/volume_lit_tf.frag");
if (fragmentShader)
{
@@ -366,7 +356,6 @@ void RayTracedTechnique::init()
}
else
{
osg::Shader* fragmentShader = osgDB::readShaderFile(osg::Shader::FRAGMENT, "shaders/volume_lit.frag");
if (fragmentShader)
{
@@ -385,19 +374,6 @@ void RayTracedTechnique::init()
if (tf)
{
osg::notify(osg::INFO)<<"Setting up TF path"<<std::endl;
osg::Texture1D* texture1D = new osg::Texture1D;
texture1D->setImage(tf->getImage());
texture1D->setResizeNonPowerOfTwoHint(false);
texture1D->setFilter(osg::Texture::MIN_FILTER, osg::Texture::LINEAR);
texture1D->setFilter(osg::Texture::MAG_FILTER, osg::Texture::LINEAR);
texture1D->setWrap(osg::Texture::WRAP_R,osg::Texture::CLAMP_TO_EDGE);
stateset->setTextureAttributeAndModes(1,texture1D,osg::StateAttribute::ON);
osg::Uniform* tfTextureSampler = new osg::Uniform("tfTexture",1);
stateset->addUniform(tfTextureSampler);
osg::Shader* fragmentShader = osgDB::readShaderFile(osg::Shader::FRAGMENT, "shaders/volume_tf.frag");
if (fragmentShader)
{
@@ -412,7 +388,6 @@ void RayTracedTechnique::init()
}
else
{
osg::Shader* fragmentShader = osgDB::readShaderFile(osg::Shader::FRAGMENT, "shaders/volume.frag");
if (fragmentShader)
{
@@ -425,7 +400,7 @@ void RayTracedTechnique::init()
}
}
}
if (cpv._sampleDensityProperty.valid())
stateset->addUniform(cpv._sampleDensityProperty->getUniform());
else