FGFS-4.1/OpenSceneGraph
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Added a check against opaque textures, when detected turn the material white

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as per specs for 3ds.
This commit is contained in:
Robert Osfield
2003-10-01 21:59:55 +00:00
parent e2ab8f18da
commit 6deedbf08c
1 changed files with 37 additions and 15 deletions
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52
src/osgPlugins/lib3ds/ReaderWriter3DS.cpp
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@@ -498,6 +498,7 @@ osg::Drawable* ReaderWriter3DS::createDrawable(Lib3dsMesh *m,FaceList& faceLis
}
// create vertices.
osg::Vec3Array* osg_coords = new osg::Vec3Array(noVertex);
geom->setVertexArray(osg_coords);
@@ -586,7 +587,12 @@ osg::Drawable* ReaderWriter3DS::createDrawable(Lib3dsMesh *m,FaceList& faceLis
geom->setNormalBinding(osg::Geometry::BIND_PER_PRIMITIVE);
}
osg::UByte4Array* osg_colors = new osg::UByte4Array(1);
(*osg_colors)[0].set(255,255,255,255);
geom->setColorArray(osg_colors);
geom->setColorBinding(osg::Geometry::BIND_OVERALL);
// create primitives
int numIndices = faceList.size()*3;
DrawElementsUShort* elements = new osg::DrawElementsUShort(osg::PrimitiveSet::TRIANGLES,numIndices);
@@ -687,28 +693,44 @@ osg::StateSet* ReaderWriter3DS::createStateSet(Lib3dsMaterial *mat)
stateset->setAttribute(material);
bool decal = false;
//bool decal = true;
bool textureTransparancy=false;
osg::Texture2D* texture1_map = createTexture(&(mat->texture1_map),"texture1_map",textureTransparancy);
if (texture1_map)
{
stateset->setTextureAttributeAndModes(0,texture1_map,osg::StateAttribute::ON);
// not sure exactly how to interpret what is best for .3ds
// but the default text env MODULATE doesn't work well, and
// DECAL seems to work better.
osg::TexEnv* texenv = new osg::TexEnv;
if (decal)
{
texenv->setMode(osg::TexEnv::DECAL);
if (!textureTransparancy)
{
// from an email from Eric Hamil, September 30, 2003.
// According to the 3DS spec, and other
// software (like Max, Lightwave, and Deep Exploration) a 3DS material that has
// a non-white diffuse base color and a 100% opaque bitmap texture, will show the
// texture with no influence from the base color.
// so we'll override material back to white.
// and no longer require the decal hack below...
osg::Vec4 white(1.0f,1.0f,1.0f,alpha);
material->setAmbient(osg::Material::FRONT_AND_BACK,white);
material->setDiffuse(osg::Material::FRONT_AND_BACK,white);
material->setSpecular(osg::Material::FRONT_AND_BACK,white);
}
else
{
texenv->setMode(osg::TexEnv::MODULATE);
}
stateset->setTextureAttribute(0,texenv);
// no longer required...
// bool decal = false;
//
// // not sure exactly how to interpret what is best for .3ds
// // but the default text env MODULATE doesn't work well, and
// // DECAL seems to work better.
// osg::TexEnv* texenv = new osg::TexEnv;
// if (decal)
// {
// texenv->setMode(osg::TexEnv::DECAL);
// }
// else
// {
// texenv->setMode(osg::TexEnv::MODULATE);
// }
// stateset->setTextureAttribute(0,texenv);
}
if (transparency>0.0f || textureTransparancy)