P(GmMaterial) GmUtil::createGmMaterial( Mtl* material, Mtl* bakedmaterial )
{
require( material );
P(GmMaterial) s = new GmMaterial;
// get name
static int unnamedCount = 0;
if ( material->GetName().data() )
s->name = material->GetName().data();
else
s->name = "noname #"+String::valueOf( ++unnamedCount );
// Standard material (+Diffuse) (+ Reflection)
if ( material->ClassID() == Class_ID(DMTL_CLASS_ID,0) )
{
StdMat* stdmat = static_cast<StdMat*>(material);
StdMat* bakedmat = static_cast<StdMat*>(bakedmaterial);
// StdMat2?
StdMat2* stdmat2 = 0;
if ( stdmat->SupportsShaders() )
stdmat2 = static_cast<StdMat2*>( stdmat );
// uniform transparency
s->opacity = stdmat->GetOpacity(0);
// self illumination
s->selfIllum = stdmat->GetSelfIllum(0);
// two-sided material?
s->twosided = ( 0 != stdmat->GetTwoSided() );
// blending mode
s->blend = GmMaterial::BLEND_COPY;
if ( s->opacity < 1.f )
s->blend = GmMaterial::BLEND_MULTIPLY;
if ( stdmat->GetTransparencyType() == TRANSP_ADDITIVE )
s->blend = GmMaterial::BLEND_ADD;
// diffuse color
s->diffuseColor = toColorf( stdmat->GetDiffuse(0) );
// specular highlights
float shinStr = stdmat->GetShinStr(0);
s->specular = (shinStr > 0.f);
if ( s->specular )
{
float shininess = stdmat->GetShininess(0);
s->specularExponent = Math::pow( 2.f, shininess*10.f + 2.f );
s->specularColor = toColorf( stdmat->GetSpecular(0) ) * shinStr;
}
if ( bakedmat )
{
shinStr = bakedmat->GetShinStr(0);
s->specular = (shinStr > 0.f);
if ( s->specular )
{
float shininess = bakedmat->GetShininess(0);
s->specularExponent = Math::pow( 2.f, shininess*10.f + 2.f );
s->specularColor = toColorf( bakedmat->GetSpecular(0) ) * shinStr;
}
}
// diffuse texture layer
BitmapTex* tex = SceneExportUtil::getStdMatBitmapTex( stdmat, ID_DI );
if ( tex )
{
GmMaterial::TextureLayer& layer = s->diffuseLayer;
setLayerTex( layer, tex, s->name );
}
// opacity texture layer
tex = SceneExportUtil::getStdMatBitmapTex( stdmat, ID_OP );
if ( tex )
{
GmMaterial::TextureLayer& layer = s->opacityLayer;
setLayerTex( layer, tex, s->name );
// check alpha channel validity
Bitmap* bmp = tex->GetBitmap(0);
if ( bmp && !bmp->HasAlpha() )
Debug::printlnError( "Material \"{0}\" opacity map \"{1}\" must have image alpha channel.", s->name, tex->GetMapName() );
//throw IOException( Format("Material \"{0}\" opacity map \"{1}\" must have image alpha channel.", s->name, tex->GetMapName()) );
s->blend = GmMaterial::BLEND_MULTIPLY;
// check that opacity map is the same as diffuse map
if ( s->opacityLayer.filename != s->diffuseLayer.filename )
throw IOException( Format("Material \"{0}\" diffuse bitmap needs to be the same in opacity map.(diffuse map is \"{1}\" and opacity map is \"{2}\")", s->name, s->diffuseLayer.filename, s->opacityLayer.filename) );
if ( s->opacityLayer.coordset != s->diffuseLayer.coordset )
throw IOException( Format("Material \"{0}\" diffuse map texture coordinate set needs to be the same in opacity map.", s->name) );
if ( s->opacityLayer.env != s->diffuseLayer.env )
throw IOException( Format("Material \"{0}\" diffuse map texture coordinate generator needs to be the same in opacity map.", s->name) );
}
// reflection texture layer
tex = SceneExportUtil::getStdMatBitmapTex( stdmat, ID_RL );
if ( tex )
{
GmMaterial::TextureLayer& layer = s->reflectionLayer;
setLayerTex( layer, tex, s->name );
}
// glossiness (shininess strength, SS) texture layer
tex = SceneExportUtil::getStdMatBitmapTex( stdmat, ID_SS );
if ( tex )
{
GmMaterial::TextureLayer& layer = s->glossinessLayer;
setLayerTex( layer, tex, s->name );
// check alpha channel validity
Bitmap* bmp = tex->GetBitmap(0);
//if ( bmp && !bmp->HasAlpha() )
// throw IOException( Format("Material \"{0}\" glossiness map \"{1}\" must have image alpha channel.", s->name, tex->GetMapName()) );
if ( bmp && !bmp->HasAlpha() )
Debug::printlnError("Material \"{0}\" glossiness map \"{1}\" must have image alpha channel.", s->name, tex->GetMapName() );
// check that glossiness map is the same as diffuse map
if ( s->glossinessLayer.filename != s->diffuseLayer.filename )
throw IOException( Format("Material \"{0}\" diffuse bitmap needs to be the same in glossiness map.(diffuse map is \"{1}\" and glossiness map is \"{2}\")", s->name, s->diffuseLayer.filename, s->glossinessLayer.filename) );
if ( s->glossinessLayer.coordset != s->diffuseLayer.coordset )
throw IOException( Format("Material \"{0}\" diffuse map texture coordinate set needs to be the same in glossiness map.", s->name) );
if ( s->glossinessLayer.env != s->diffuseLayer.env )
throw IOException( Format("Material \"{0}\" diffuse map texture coordinate generator needs to be the same in glossiness map.", s->name) );
// check that reflection map has been set
if ( s->reflectionLayer.filename.length() == 0 )
throw IOException( Format("Material \"{0}\" glossiness map requires reflection map to be set.", s->name) );
}
// bump texture layer
tex = SceneExportUtil::getStdMatBitmapTex( stdmat, ID_BU );
if ( tex )
{
GmMaterial::TextureLayer& layer = s->bumpLayer;
setLayerTex( layer, tex, s->name );
}
// specular color texture layer
tex = SceneExportUtil::getStdMatBitmapTex( stdmat, ID_SP );
if ( tex )
{
GmMaterial::TextureLayer& layer = s->specularColorLayer;
setLayerTex( layer, tex, s->name );
}
// specular level texture layer
tex = SceneExportUtil::getStdMatBitmapTex( stdmat, ID_SH );
if ( tex )
{
GmMaterial::TextureLayer& layer = s->specularLevelLayer;
setLayerTex( layer, tex, s->name );
}
// lightmap texture layer ( from self-illumination map of baked material )
tex = SceneExportUtil::getStdMatBitmapTex( stdmat, ID_SI );
BitmapTex* tex2 = 0;
if ( bakedmat )
tex2 = SceneExportUtil::getStdMatBitmapTex( bakedmat, ID_SI );
if ( tex || tex2 )
{
GmMaterial::TextureLayer& layer = s->lightMapLayer;
if ( tex && !tex2 )
setLayerTex( layer, tex, s->name );
else if ( tex2 )
setLayerTex( layer, tex2, s->name );
}
}
return s;
}
