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Properly handle NiAlphaProperty values

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actorid
Chris Robinson 12 years ago
parent 70b6b68005
commit b4b20622c6
1 changed files with 56 additions and 81 deletions
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137
components/nifogre/ogre_nif_loader.cpp
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@ -492,49 +492,43 @@ bool createSkeleton(const std::string &name, const std::string &group, const Nif
NIFSkeletonLoader::LoaderMap NIFSkeletonLoader::sLoaders;
// Conversion of blend / test mode from NIF -> OGRE.
// Not in use yet, so let's comment it out.
/*
static SceneBlendFactor getBlendFactor(int mode)
// Conversion of blend / test mode from NIF
static const char *getBlendFactor(int mode)
{
switch(mode)
switch(mode)
{
case 0: return SBF_ONE;
case 1: return SBF_ZERO;
case 2: return SBF_SOURCE_COLOUR;
case 3: return SBF_ONE_MINUS_SOURCE_COLOUR;
case 4: return SBF_DEST_COLOUR;
case 5: return SBF_ONE_MINUS_DEST_COLOUR;
case 6: return SBF_SOURCE_ALPHA;
case 7: return SBF_ONE_MINUS_SOURCE_ALPHA;
case 8: return SBF_DEST_ALPHA;
case 9: return SBF_ONE_MINUS_DEST_ALPHA;
// [Comment from Chris Robinson:] Can't handle this mode? :/
// case 10: return SBF_SOURCE_ALPHA_SATURATE;
default:
return SBF_SOURCE_ALPHA;
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";
}
// This is also unused
static CompareFunction getTestMode(int mode)
static const char *getTestMode(int mode)
{
switch(mode)
switch(mode)
{
case 0: return CMPF_ALWAYS_PASS;
case 1: return CMPF_LESS;
case 2: return CMPF_EQUAL;
case 3: return CMPF_LESS_EQUAL;
case 4: return CMPF_GREATER;
case 5: return CMPF_NOT_EQUAL;
case 6: return CMPF_GREATER_EQUAL;
case 7: return CMPF_ALWAYS_FAIL;
default:
return CMPF_ALWAYS_PASS;
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";
}
*/
class NIFMaterialLoader {
@ -567,8 +561,8 @@ static Ogre::String getMaterial(const Nif::NiTriShape *shape, const Ogre::String
Ogre::Vector3 emissive(0.0f);
float glossiness = 0.0f;
float alpha = 1.0f;
int alphaFlags = -1;
// ubyte alphaTest = 0;
int alphaFlags = 0;
int alphaTest = 0;
Ogre::String texName;
bool vertexColour = (shape->data->colors.size() != 0);
@ -640,7 +634,7 @@ static Ogre::String getMaterial(const Nif::NiTriShape *shape, const Ogre::String
if (a)
{
alphaFlags = a->flags;
// alphaTest = a->data.threshold;
alphaTest = a->data.threshold;
}
// Material
@ -674,6 +668,7 @@ static Ogre::String getMaterial(const Nif::NiTriShape *shape, const Ogre::String
boost::hash_combine(h, texName);
boost::hash_combine(h, vertexColour);
boost::hash_combine(h, alphaFlags);
boost::hash_combine(h, alphaTest);
std::map<size_t,std::string>::iterator itr = MaterialMap.find(h);
if (itr != MaterialMap.end())
@ -705,57 +700,37 @@ static Ogre::String getMaterial(const Nif::NiTriShape *shape, const Ogre::String
instance->setProperty ("has_vertex_colour", sh::makeProperty<sh::BooleanValue>(new sh::BooleanValue(true)));
// Add transparency if NiAlphaProperty was present
if (alphaFlags != -1)
NifOverrides::TransparencyResult result = NifOverrides::Overrides::getTransparencyOverride(texName);
if (result.first)
{
// The 237 alpha flags are by far the most common. Check
// NiAlphaProperty in nif/property.h if you need to decode
// other values. 237 basically means normal transparencly.
if (alphaFlags == 237)
{
NifOverrides::TransparencyResult result = NifOverrides::Overrides::getTransparencyOverride(texName);
if (result.first)
{
instance->setProperty("alpha_rejection",
sh::makeProperty<sh::StringValue>(new sh::StringValue("greater_equal " + boost::lexical_cast<std::string>(result.second))));
}
else
{
// Enable transparency
instance->setProperty("scene_blend", sh::makeProperty<sh::StringValue>(new sh::StringValue("alpha_blend")));
instance->setProperty("depth_write", sh::makeProperty<sh::StringValue>(new sh::StringValue("off")));
}
}
else
warn("Unhandled alpha setting for texture " + texName);
alphaFlags = (1<<9) | (6<<10); /* alpha_rejection enabled, greater_equal */
alphaTest = result.second;
}
else
instance->getMaterial ()->setShadowCasterMaterial ("openmw_shadowcaster_noalpha");
// As of yet UNTESTED code from Chris:
/*pass->setTextureFiltering(Ogre::TFO_ANISOTROPIC);
pass->setDepthFunction(Ogre::CMPF_LESS_EQUAL);
pass->setDepthCheckEnabled(true);
// Add transparency if NiAlphaProperty was present
if (alphaFlags != -1)
if((alphaFlags&1))
{
std::cout << "Alpha flags set!" << endl;
if ((alphaFlags&1))
{
pass->setDepthWriteEnabled(false);
pass->setSceneBlending(getBlendFactor((alphaFlags>>1)&0xf),
getBlendFactor((alphaFlags>>5)&0xf));
}
else
pass->setDepthWriteEnabled(true);
std::string blend_mode;
blend_mode += getBlendFactor((alphaFlags>>1)&0xf);
blend_mode += " ";
blend_mode += getBlendFactor((alphaFlags>>5)&0xf);
if ((alphaFlags>>9)&1)
pass->setAlphaRejectSettings(getTestMode((alphaFlags>>10)&0x7),
alphaTest);
instance->setProperty("depth_write", sh::makeProperty(new sh::StringValue("off")));
instance->setProperty("scene_blend", sh::makeProperty(new sh::StringValue(blend_mode)));
}
else
instance->getMaterial()->setShadowCasterMaterial("openmw_shadowcaster_noalpha");
pass->setTransparentSortingEnabled(!((alphaFlags>>13)&1));
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)));
}
*/
instance->setProperty("transparent_sorting", sh::makeProperty(new sh::StringValue(((alphaFlags>>13)&1) ?
"off" : "on")));
return matname;
}

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