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Code Issues Releases Wiki Activity

Handle Quadratic and Linear attenuation independently (Fixes #1456)

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This commit is contained in:
scrawl 2014-06-11 02:24:17 +02:00
parent 7eee0855f7
commit 14a9f0ebf8
1 changed files with 24 additions and 12 deletions
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36
apps/openmw/mwrender/animation.cpp
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@ -356,28 +356,40 @@ void Animation::addExtraLight(Ogre::SceneManager *sceneMgr, NifOgre::ObjectScene
objlist->mControllers.push_back(Ogre::Controller<Ogre::Real>(src, dest, func));
bool interior = !(mPtr.isInCell() && mPtr.getCell()->getCell()->isExterior());
bool quadratic = fallback->getFallbackBool("LightAttenuation_OutQuadInLin") ?
!interior : fallback->getFallbackBool("LightAttenuation_UseQuadratic");
static bool outQuadInLin = fallback->getFallbackBool("LightAttenuation_OutQuadInLin");
static bool useQuadratic = fallback->getFallbackBool("LightAttenuation_UseQuadratic");
static float quadraticValue = fallback->getFallbackFloat("LightAttenuation_QuadraticValue");
static float quadraticRadiusMult = fallback->getFallbackFloat("LightAttenuation_QuadraticRadiusMult");
static bool useLinear = fallback->getFallbackBool("LightAttenuation_UseLinear");
static float linearRadiusMult = fallback->getFallbackFloat("LightAttenuation_LinearRadiusMult");
static float linearValue = fallback->getFallbackFloat("LightAttenuation_LinearValue");
bool quadratic = useQuadratic && (!outQuadInLin || !interior);
// with the standard 1 / (c + d*l + d*d*q) equation the attenuation factor never becomes zero,
// so we ignore lights if their attenuation falls below this factor.
const float threshold = 0.03;
if (!quadratic)
float quadraticAttenuation = 0;
float linearAttenuation = 0;
float activationRange = 0;
if (quadratic)
{
float r = radius * fallback->getFallbackFloat("LightAttenuation_LinearRadiusMult");
float attenuation = fallback->getFallbackFloat("LightAttenuation_LinearValue") / r;
float activationRange = 1.0f / (threshold * attenuation);
olight->setAttenuation(activationRange, 0, attenuation, 0);
float r = radius * quadraticRadiusMult;
quadraticAttenuation = quadraticValue / std::pow(r, 2);
activationRange = std::sqrt(1.0f / (threshold * quadraticAttenuation));
}
else
if (useLinear)
{
float r = radius * fallback->getFallbackFloat("LightAttenuation_QuadraticRadiusMult");
float attenuation = fallback->getFallbackFloat("LightAttenuation_QuadraticValue") / std::pow(r, 2);
float activationRange = std::sqrt(1.0f / (threshold * attenuation));
olight->setAttenuation(activationRange, 0, 0, attenuation);
float r = radius * linearRadiusMult;
linearAttenuation = linearValue / r;
activationRange = std::max(activationRange, 1.0f / (threshold * linearAttenuation));
}
olight->setAttenuation(activationRange, 0, linearAttenuation, quadraticAttenuation);
// If there's an AttachLight bone, attach the light to that, otherwise put it in the center,
if(objlist->mSkelBase && objlist->mSkelBase->getSkeleton()->hasBone("AttachLight"))
objlist->mSkelBase->attachObjectToBone("AttachLight", olight);