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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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40
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()); 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) { for (Block_map::const_iterator i=blocks_.begin(); i!=blocks_.end(); ++i) {
const Block &block = i->second; const Block &block = i->second;
@ -174,13 +177,21 @@ void Surface::generate_stateset(int max_tex_units, bool force_arb_compression, c
continue; continue;
} }
if (block.get_type() == "IMAP") { if (block.get_type() == "IMAP")
if (block.get_channel() == "COLR") { {
if (block.get_image_map().clip) { 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(); 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; osg::notify(osg::WARN) << "Warning: lwosg::Surface: maximum number of texture units (" << max_tex_units << ") has been reached, skipping incoming blocks" << std::endl;
break; break;
} }
@ -196,18 +207,22 @@ void Surface::generate_stateset(int max_tex_units, bool force_arb_compression, c
stateset_->setTextureAttributeAndModes(unit, texture.get()); stateset_->setTextureAttributeAndModes(unit, texture.get());
osg::ref_ptr<osg::TexEnvCombine> tec = new osg::TexEnvCombine; osg::ref_ptr<osg::TexEnvCombine> tec = new osg::TexEnvCombine;
switch (block.get_opacity_type()) { switch (block.get_opacity_type())
{
case Block::NORMAL: case Block::NORMAL:
{ {
float s = block.get_opacity_amount(); float s = block.get_opacity_amount();
if (unit == 0) { if (unit == 0)
{
tec->setCombine_RGB(osg::TexEnvCombine::MODULATE); tec->setCombine_RGB(osg::TexEnvCombine::MODULATE);
osg::Vec3 color(diffuse_, diffuse_, diffuse_); osg::Vec3 color(diffuse_, diffuse_, diffuse_);
color = color * s + base_color_ * (1 - s); color = color * s + base_color_ * (1 - s);
material->setDiffuse(osg::Material::FRONT_AND_BACK, osg::Vec4(color, 1-transparency_)); 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->setAmbient(osg::Material::FRONT_AND_BACK, material->getDiffuse(osg::Material::FRONT_AND_BACK));
material->setColorMode(osg::Material::OFF); material->setColorMode(osg::Material::OFF);
} else { }
else
{
tec->setCombine_RGB(osg::TexEnvCombine::INTERPOLATE); tec->setCombine_RGB(osg::TexEnvCombine::INTERPOLATE);
tec->setConstantColor(osg::Vec4(s, s, s, s)); tec->setConstantColor(osg::Vec4(s, s, s, s));
} }
@ -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; osg::notify(osg::WARN) << "Warning: lwosg::Surface: 'Texture Displacement' blending mode is not supported" << std::endl;
break; break;
default: ; default:
break;
}; };
stateset_->setTextureAttributeAndModes(unit, tec.get()); stateset_->setTextureAttributeAndModes(unit, tec.get());
++unit; ++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; osg::notify(osg::WARN) << "Warning: lwosg::Surface: texture channels of type '" << block.get_channel() << "' are not supported, this block will be ignored" << std::endl;
} }
} }