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From Bob Kuehne, "added multi-texture support (alpha/trans images)"

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This commit is contained in:
Robert Osfield 2008-06-18 11:56:50 +00:00
parent b82e24b08d
commit df87106d4b
1 changed files with 40 additions and 22 deletions
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62
src/osgPlugins/lwo/Surface.cpp
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@ -166,7 +166,10 @@ void Surface::generate_stateset(int max_tex_units, bool force_arb_compression, c
stateset_->setAttributeAndModes(cf.get());
}
int unit = 0;
std::map< std::string, unsigned int > unitmap;
unitmap[ "COLR" ] = 0;
unitmap[ "TRAN" ] = 1;
unsigned int unit = 0;
for (Block_map::const_iterator i=blocks_.begin(); i!=blocks_.end(); ++i) {
const Block &block = i->second;
@ -174,13 +177,21 @@ void Surface::generate_stateset(int max_tex_units, bool force_arb_compression, c
continue;
}
if (block.get_type() == "IMAP") {
if (block.get_channel() == "COLR") {
if (block.get_image_map().clip) {
if (block.get_type() == "IMAP")
{
std::string channel = block.get_channel();
if ( ( channel == "COLR" ) ||
( channel == "TRAN" ) )
{
unit = unitmap[ channel ];
if (block.get_image_map().clip)
{
std::string image_file = block.get_image_map().clip->get_still_filename();
if (!image_file.empty()) {
if (!image_file.empty())
{
if (unit >= max_tex_units && max_tex_units > 0) {
if (unit >= max_tex_units && max_tex_units > 0)
{
osg::notify(osg::WARN) << "Warning: lwosg::Surface: maximum number of texture units (" << max_tex_units << ") has been reached, skipping incoming blocks" << std::endl;
break;
}
@ -196,23 +207,27 @@ void Surface::generate_stateset(int max_tex_units, bool force_arb_compression, c
stateset_->setTextureAttributeAndModes(unit, texture.get());
osg::ref_ptr<osg::TexEnvCombine> tec = new osg::TexEnvCombine;
switch (block.get_opacity_type()) {
switch (block.get_opacity_type())
{
case Block::NORMAL:
{
float s = block.get_opacity_amount();
if (unit == 0)
{
float s = block.get_opacity_amount();
if (unit == 0) {
tec->setCombine_RGB(osg::TexEnvCombine::MODULATE);
osg::Vec3 color(diffuse_, diffuse_, diffuse_);
color = color * s + base_color_ * (1 - s);
material->setDiffuse(osg::Material::FRONT_AND_BACK, osg::Vec4(color, 1-transparency_));
material->setAmbient(osg::Material::FRONT_AND_BACK, material->getDiffuse(osg::Material::FRONT_AND_BACK));
material->setColorMode(osg::Material::OFF);
} else {
tec->setCombine_RGB(osg::TexEnvCombine::INTERPOLATE);
tec->setConstantColor(osg::Vec4(s, s, s, s));
}
tec->setCombine_RGB(osg::TexEnvCombine::MODULATE);
osg::Vec3 color(diffuse_, diffuse_, diffuse_);
color = color * s + base_color_ * (1 - s);
material->setDiffuse(osg::Material::FRONT_AND_BACK, osg::Vec4(color, 1-transparency_));
material->setAmbient(osg::Material::FRONT_AND_BACK, material->getDiffuse(osg::Material::FRONT_AND_BACK));
material->setColorMode(osg::Material::OFF);
}
break;
else
{
tec->setCombine_RGB(osg::TexEnvCombine::INTERPOLATE);
tec->setConstantColor(osg::Vec4(s, s, s, s));
}
}
break;
case Block::ADDITIVE:
tec->setCombine_RGB(osg::TexEnvCombine::ADD);
@ -240,14 +255,17 @@ void Surface::generate_stateset(int max_tex_units, bool force_arb_compression, c
osg::notify(osg::WARN) << "Warning: lwosg::Surface: 'Texture Displacement' blending mode is not supported" << std::endl;
break;
default: ;
default:
break;
};
stateset_->setTextureAttributeAndModes(unit, tec.get());
++unit;
}
}
} else {
}
else
{
osg::notify(osg::WARN) << "Warning: lwosg::Surface: texture channels of type '" << block.get_channel() << "' are not supported, this block will be ignored" << std::endl;
}
}