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openmw/components/nifogre/material.cpp

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#include "material.hpp"
#include <components/nif/node.hpp>
#include <components/misc/stringops.hpp>
#include <components/settings/settings.hpp>
#include <components/nifoverrides/nifoverrides.hpp>
#include <extern/shiny/Main/Factory.hpp>
#include <OgreMaterialManager.h>
#include <OgreMaterial.h>
#include <boost/lexical_cast.hpp>
#include <boost/algorithm/string.hpp>
#include <boost/functional/hash.hpp>
namespace NifOgre
{
// Conversion of blend / test mode from NIF
static const char *getBlendFactor(int mode)
{
switch(mode)
{
case 0: return "one";
case 1: return "zero";
case 2: return "src_colour";
case 3: return "one_minus_src_colour";
case 4: return "dest_colour";
case 5: return "one_minus_dest_colour";
case 6: return "src_alpha";
case 7: return "one_minus_src_alpha";
case 8: return "dest_alpha";
case 9: return "one_minus_dest_alpha";
case 10: return "src_alpha_saturate";
}
std::cerr<< "Unexpected blend mode: "<<mode <<std::endl;
return "src_alpha";
}
static const char *getTestMode(int mode)
{
switch(mode)
{
case 0: return "always_pass";
case 1: return "less";
case 2: return "equal";
case 3: return "less_equal";
case 4: return "greater";
case 5: return "not_equal";
case 6: return "greater_equal";
case 7: return "always_fail";
}
std::cerr<< "Unexpected test mode: "<<mode <<std::endl;
return "less_equal";
}
std::string NIFMaterialLoader::findTextureName(const std::string &filename)
{
/* Bethesda at some point converted all their BSA
* textures from tga to dds for increased load speed, but all
* texture file name references were kept as .tga.
*/
static const char path[] = "textures\\";
static const char path2[] = "textures/";
std::string texname = filename;
Misc::StringUtils::toLower(texname);
if(texname.compare(0, sizeof(path)-1, path) != 0 &&
texname.compare(0, sizeof(path2)-1, path2) != 0)
texname = path + texname;
Ogre::String::size_type pos = texname.rfind('.');
if(pos != Ogre::String::npos && texname.compare(pos, texname.length() - pos, ".dds") != 0)
{
// since we know all (GOTY edition or less) textures end
// in .dds, we change the extension
texname.replace(pos, texname.length(), ".dds");
// if it turns out that the above wasn't true in all cases (not for vanilla, but maybe mods)
// verify, and revert if false (this call succeeds quickly, but fails slowly)
if(!Ogre::ResourceGroupManager::getSingleton().resourceExistsInAnyGroup(texname))
{
texname = filename;
Misc::StringUtils::toLower(texname);
if(texname.compare(0, sizeof(path)-1, path) != 0 &&
texname.compare(0, sizeof(path2)-1, path2) != 0)
texname = path + texname;
}
}
return texname;
}
Ogre::String NIFMaterialLoader::getMaterial(const Nif::ShapeData *shapedata,
const Ogre::String &name, const Ogre::String &group,
const Nif::NiTexturingProperty *texprop,
const Nif::NiMaterialProperty *matprop,
const Nif::NiAlphaProperty *alphaprop,
const Nif::NiVertexColorProperty *vertprop,
const Nif::NiZBufferProperty *zprop,
const Nif::NiSpecularProperty *specprop,
const Nif::NiWireframeProperty *wireprop,
bool &needTangents)
{
Ogre::MaterialManager &matMgr = Ogre::MaterialManager::getSingleton();
Ogre::MaterialPtr material = matMgr.getByName(name);
if(!material.isNull())
return name;
Ogre::Vector3 ambient(1.0f);
Ogre::Vector3 diffuse(1.0f);
Ogre::Vector3 specular(0.0f);
Ogre::Vector3 emissive(0.0f);
float glossiness = 0.0f;
float alpha = 1.0f;
int alphaFlags = 0;
int alphaTest = 0;
int vertMode = 2;
//int lightMode = 1;
int depthFlags = 3;
// Default should be 1, but Bloodmoon's models are broken
int specFlags = 0;
int wireFlags = 0;
Ogre::String texName[7];
bool vertexColour = (shapedata->colors.size() != 0);
// Texture
if(texprop)
{
for(int i = 0;i < 7;i++)
{
if(!texprop->textures[i].inUse)
continue;
if(texprop->textures[i].texture.empty())
{
warn("Texture layer "+Ogre::StringConverter::toString(i)+" is in use but empty in "+name);
continue;
}
const Nif::NiSourceTexture *st = texprop->textures[i].texture.getPtr();
if(st->external)
texName[i] = findTextureName(st->filename);
else
warn("Found internal texture, ignoring.");
}
Nif::ControllerPtr ctrls = texprop->controller;
while(!ctrls.empty())
{
warn("Unhandled texture controller "+ctrls->recName+" in "+name);
ctrls = ctrls->next;
}
}
needTangents = !texName[Nif::NiTexturingProperty::BumpTexture].empty();
// Alpha modifiers
if(alphaprop)
{
alphaFlags = alphaprop->flags;
alphaTest = alphaprop->data.threshold;
Nif::ControllerPtr ctrls = alphaprop->controller;
while(!ctrls.empty())
{
warn("Unhandled alpha controller "+ctrls->recName+" in "+name);
ctrls = ctrls->next;
}
}
// Vertex color handling
if(vertprop)
{
vertMode = vertprop->data.vertmode;
// FIXME: Handle lightmode?
//lightMode = vertprop->data.lightmode;
Nif::ControllerPtr ctrls = vertprop->controller;
while(!ctrls.empty())
{
warn("Unhandled vertex color controller "+ctrls->recName+" in "+name);
ctrls = ctrls->next;
}
}
if(zprop)
{
depthFlags = zprop->flags;
// Depth function???
Nif::ControllerPtr ctrls = zprop->controller;
while(!ctrls.empty())
{
warn("Unhandled depth controller "+ctrls->recName+" in "+name);
ctrls = ctrls->next;
}
}
if(specprop)
{
specFlags = specprop->flags;
Nif::ControllerPtr ctrls = specprop->controller;
while(!ctrls.empty())
{
warn("Unhandled specular controller "+ctrls->recName+" in "+name);
ctrls = ctrls->next;
}
}
if(wireprop)
{
wireFlags = wireprop->flags;
Nif::ControllerPtr ctrls = wireprop->controller;
while(!ctrls.empty())
{
warn("Unhandled wireframe controller "+ctrls->recName+" in "+name);
ctrls = ctrls->next;
}
}
// Material
if(matprop)
{
ambient = matprop->data.ambient;
diffuse = matprop->data.diffuse;
specular = matprop->data.specular;
emissive = matprop->data.emissive;
glossiness = matprop->data.glossiness;
alpha = matprop->data.alpha;
Nif::ControllerPtr ctrls = matprop->controller;
while(!ctrls.empty())
{
warn("Unhandled material controller "+ctrls->recName+" in "+name);
ctrls = ctrls->next;
}
}
{
// Generate a hash out of all properties that can affect the material.
size_t h = 0;
boost::hash_combine(h, ambient.x);
boost::hash_combine(h, ambient.y);
boost::hash_combine(h, ambient.z);
boost::hash_combine(h, diffuse.x);
boost::hash_combine(h, diffuse.y);
boost::hash_combine(h, diffuse.z);
boost::hash_combine(h, alpha);
boost::hash_combine(h, specular.x);
boost::hash_combine(h, specular.y);
boost::hash_combine(h, specular.z);
boost::hash_combine(h, glossiness);
boost::hash_combine(h, emissive.x);
boost::hash_combine(h, emissive.y);
boost::hash_combine(h, emissive.z);
for(int i = 0;i < 7;i++)
{
if(!texName[i].empty())
boost::hash_combine(h, texName[i]);
}
boost::hash_combine(h, vertexColour);
boost::hash_combine(h, alphaFlags);
boost::hash_combine(h, alphaTest);
boost::hash_combine(h, vertMode);
boost::hash_combine(h, depthFlags);
boost::hash_combine(h, specFlags);
boost::hash_combine(h, wireFlags);
std::map<size_t,std::string>::iterator itr = sMaterialMap.find(h);
if (itr != sMaterialMap.end())
{
// a suitable material exists already - use it
return itr->second;
}
// not found, create a new one
sMaterialMap.insert(std::make_pair(h, name));
}
// No existing material like this. Create a new one.
sh::MaterialInstance *instance = sh::Factory::getInstance().createMaterialInstance(name, "openmw_objects_base");
if(vertMode == 0 || !vertexColour)
{
instance->setProperty("ambient", sh::makeProperty(new sh::Vector4(ambient.x, ambient.y, ambient.z, 1)));
instance->setProperty("diffuse", sh::makeProperty(new sh::Vector4(diffuse.x, diffuse.y, diffuse.z, alpha)));
instance->setProperty("emissive", sh::makeProperty(new sh::Vector4(emissive.x, emissive.y, emissive.z, 1)));
instance->setProperty("vertmode", sh::makeProperty(new sh::StringValue("0")));
}
else if(vertMode == 1)
{
instance->setProperty("ambient", sh::makeProperty(new sh::Vector4(ambient.x, ambient.y, ambient.z, 1)));
instance->setProperty("diffuse", sh::makeProperty(new sh::Vector4(diffuse.x, diffuse.y, diffuse.z, alpha)));
instance->setProperty("emissive", sh::makeProperty(new sh::StringValue("vertexcolour")));
instance->setProperty("vertmode", sh::makeProperty(new sh::StringValue("1")));
}
else if(vertMode == 2)
{
instance->setProperty("ambient", sh::makeProperty(new sh::StringValue("vertexcolour")));
instance->setProperty("diffuse", sh::makeProperty(new sh::StringValue("vertexcolour")));
instance->setProperty("emissive", sh::makeProperty(new sh::Vector4(emissive.x, emissive.y, emissive.z, 1)));
instance->setProperty("vertmode", sh::makeProperty(new sh::StringValue("2")));
}
else
std::cerr<< "Unhandled vertex mode: "<<vertMode <<std::endl;
if(specFlags)
{
instance->setProperty("specular", sh::makeProperty(
new sh::Vector4(specular.x, specular.y, specular.z, glossiness)));
}
if(wireFlags)
{
instance->setProperty("polygon_mode", sh::makeProperty(new sh::StringValue("wireframe")));
}
instance->setProperty("diffuseMap", sh::makeProperty(texName[Nif::NiTexturingProperty::BaseTexture]));
instance->setProperty("normalMap", sh::makeProperty(texName[Nif::NiTexturingProperty::BumpTexture]));
instance->setProperty("detailMap", sh::makeProperty(texName[Nif::NiTexturingProperty::DetailTexture]));
instance->setProperty("emissiveMap", sh::makeProperty(texName[Nif::NiTexturingProperty::GlowTexture]));
if (!texName[Nif::NiTexturingProperty::GlowTexture].empty())
{
instance->setProperty("use_emissive_map", sh::makeProperty(new sh::BooleanValue(true)));
instance->setProperty("emissiveMapUVSet", sh::makeProperty(new sh::IntValue(texprop->textures[Nif::NiTexturingProperty::GlowTexture].uvSet)));
}
if (!texName[Nif::NiTexturingProperty::DetailTexture].empty())
{
instance->setProperty("use_detail_map", sh::makeProperty(new sh::BooleanValue(true)));
instance->setProperty("detailMapUVSet", sh::makeProperty(new sh::IntValue(texprop->textures[Nif::NiTexturingProperty::DetailTexture].uvSet)));
}
for(int i = 0;i < 7;i++)
{
if(i == Nif::NiTexturingProperty::BaseTexture ||
i == Nif::NiTexturingProperty::DetailTexture ||
i == Nif::NiTexturingProperty::BumpTexture ||
i == Nif::NiTexturingProperty::GlowTexture)
continue;
if(!texName[i].empty())
warn("Ignored texture "+texName[i]+" on layer "+Ogre::StringConverter::toString(i));
}
if (vertexColour)
instance->setProperty("has_vertex_colour", sh::makeProperty(new sh::BooleanValue(true)));
// Add transparency if NiAlphaProperty was present
NifOverrides::TransparencyResult result = NifOverrides::Overrides::getTransparencyOverride(texName[0]);
if (result.first)
{
alphaFlags = (1<<9) | (6<<10); /* alpha_rejection enabled, greater_equal */
alphaTest = result.second;
depthFlags = (1<<0) | (1<<1); // depth_write on, depth_check on
}
if((alphaFlags&1))
{
std::string blend_mode;
blend_mode += getBlendFactor((alphaFlags>>1)&0xf);
blend_mode += " ";
blend_mode += getBlendFactor((alphaFlags>>5)&0xf);
instance->setProperty("scene_blend", sh::makeProperty(new sh::StringValue(blend_mode)));
}
if((alphaFlags>>9)&1)
{
std::string reject;
reject += getTestMode((alphaFlags>>10)&0x7);
reject += " ";
reject += Ogre::StringConverter::toString(alphaTest);
instance->setProperty("alpha_rejection", sh::makeProperty(new sh::StringValue(reject)));
}
else
instance->getMaterial()->setShadowCasterMaterial("openmw_shadowcaster_noalpha");
// Ogre usually only sorts if depth write is disabled, so we want "force" instead of "on"
instance->setProperty("transparent_sorting", sh::makeProperty(new sh::StringValue(
((alphaFlags&1) && !((alphaFlags>>13)&1)) ? "force" : "off")));
instance->setProperty("depth_check", sh::makeProperty(new sh::StringValue((depthFlags&1) ? "on" : "off")));
instance->setProperty("depth_write", sh::makeProperty(new sh::StringValue(((depthFlags>>1)&1) ? "on" : "off")));
// depth_func???
sh::Factory::getInstance()._ensureMaterial(name, "Default");
return name;
}
std::map<size_t,std::string> NIFMaterialLoader::sMaterialMap;
}
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