void ShadowManager::updateViewMatrix(const Light *const light)
{
ShadowData *shadowData = shadowDatas[light];
if(light->hasParallelBeams())
{ //sun light
Vector3<float> lightDirection = light->getDirections()[0];
const Vector3<float> &f = lightDirection.normalize();
const Vector3<float> &s = f.crossProduct(Vector3<float>(0.0, 1.0, 0.0)).normalize();
const Vector3<float> &u = s.crossProduct(f).normalize();
Matrix4<float> M(
s[0], s[1], s[2], 0,
u[0], u[1], u[2], 0,
-f[0], -f[1], -f[2], 0,
0, 0, 0, 1);
Matrix4<float> eye;
eye.buildTranslation(lightDirection.X, lightDirection.Y, lightDirection.Z);
Matrix4<float> mViewShadow = M * eye;
shadowData->setLightViewMatrix(mViewShadow);
}else
{
throw std::runtime_error("Shadow currently not supported on omnidirectional light.");
}
}
ShadowData ShadowData::blend(const ShadowData& from, double progress, const Color& currentColor) const
{
ASSERT(style() == from.style());
return ShadowData(blink::blend(from.location(), location(), progress),
clampTo(blink::blend(from.blur(), blur(), progress), 0.0f),
blink::blend(from.spread(), spread(), progress),
style(),
blink::blend(from.color().resolve(currentColor), color().resolve(currentColor), progress));
}
ShadowData ShadowData::blend(const ShadowData& from, double progress) const
{
if (style() != from.style())
return *this;
return ShadowData(WebCore::blend(from.location(), location(), progress),
clampTo<int>(WebCore::blend(from.blur(), blur(), progress), 0),
WebCore::blend(from.spread(), spread(), progress),
style(),
WebCore::blend(from.color(), color(), progress));
}
void ShadowManager::updateShadowMaps()
{
glBindTexture(GL_TEXTURE_2D, 0);
for(std::map<const Light *, ShadowData *>::const_iterator it = shadowDatas.begin(); it!=shadowDatas.end(); ++it)
{
ShadowData *shadowData = it->second;
glViewport(0, 0, shadowMapResolution, shadowMapResolution);
glBindFramebuffer(GL_FRAMEBUFFER, shadowData->getFboID());
glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
shadowUniform->setUniformData(shadowData);
shadowModelUniform->setModelUniformData(shadowData);
shadowModelDisplayer->setModels(shadowData->retrieveModels());
shadowModelDisplayer->display(shadowData->getLightViewMatrix());
if(blurShadow!=BlurShadow::NO_BLUR)
{
shadowData->getVerticalBlurFilter()->applyOn(shadowData->getShadowMapTextureID());
shadowData->getHorizontalBlurFilter()->applyOn(shadowData->getVerticalBlurFilter()->getTextureID());
}
}
glViewport(0, 0, sceneWidth, sceneHeight);
glBindTexture(GL_TEXTURE_2D_ARRAY, 0);
}
void ObjectLoader::processShadow(XmlTreeNode* lightNode, ObjectLight* light){
XmlTreeNode* shadowNode = lightNode->searchDirectChild("Shadow", 0);
if(!shadowNode){
Logger::getInstance()->logDebug(new Log("ObjectLoader#processShadow: Falta el nodo \"Shadow\" en etiqueta Light definida como \"castShadow\", se ignora la sombra"));
return;
}
XmlTreeNode* shadowMapNode = shadowNode->searchDirectChild("ShadowMap", 0);
if(!shadowMapNode){
Logger::getInstance()->logDebug(new Log("ObjectLoader#processShadow: Falta el nodo \"ShadowMap\" en etiqueta Shadow, se ignora la sombra"));
return;
}
//El tamaño de shadowMap
ShadowData* shadow = light->getShadowData();
vec2 size = getVec2ShadowParam("Size", shadowMapNode);
shadow->setShadowMapSize(size);
//La perspectiva fovy del shadowMap
float perspectiveFovy = getFloatParam("Perspective", shadowMapNode);
shadow->setPerspectiveFovy(perspectiveFovy);
//El factor del filtro de shadow si es que hay
XmlTreeNode* filterNode = lightNode->searchDirectChild("ShadowFilter", 0);
if(filterNode != NULL){
float filterFactor = getFloatParam("Factor", filterNode);
shadow->setFilterFactor(filterFactor);
}
XmlNodeAttribute* preBankedAtt = shadowNode->searchForAttribute("prebanked");
//Es si prebanqueada, la seteo como tal
if((preBankedAtt)&&(preBankedAtt->getValue().compare("true")==0)){
shadow->setPrebanked(true);
}
//Activo la sombra (falta activarla realmente cuando se agrega el objeto a la escena)
shadow->setActive(true);
}
FilterOperation* FilterInterpolationFunctions::createFilter(const InterpolableValue& interpolableValue, const NonInterpolableValue& untypedNonInterpolableValue, const StyleResolverState& state)
{
const FilterNonInterpolableValue& nonInterpolableValue = toFilterNonInterpolableValue(untypedNonInterpolableValue);
FilterOperation::OperationType type = nonInterpolableValue.type();
switch (type) {
case FilterOperation::GRAYSCALE:
case FilterOperation::HUE_ROTATE:
case FilterOperation::SATURATE:
case FilterOperation::SEPIA: {
double value = clampParameter(toInterpolableNumber(interpolableValue).value(), type);
return BasicColorMatrixFilterOperation::create(value, type);
}
case FilterOperation::BRIGHTNESS:
case FilterOperation::CONTRAST:
case FilterOperation::INVERT:
case FilterOperation::OPACITY: {
double value = clampParameter(toInterpolableNumber(interpolableValue).value(), type);
return BasicComponentTransferFilterOperation::create(value, type);
}
case FilterOperation::BLUR: {
Length stdDeviation = CSSLengthInterpolationType::resolveInterpolableLength(interpolableValue, nonInterpolableValue.typeNonInterpolableValue(), state.cssToLengthConversionData(), ValueRangeNonNegative);
return BlurFilterOperation::create(stdDeviation);
}
case FilterOperation::DROP_SHADOW: {
ShadowData shadowData = ShadowInterpolationFunctions::createShadowData(interpolableValue, nonInterpolableValue.typeNonInterpolableValue(), state);
Color color = shadowData.color().isCurrentColor() ? Color::black : shadowData.color().getColor();
return DropShadowFilterOperation::create(IntPoint(shadowData.x(), shadowData.y()), shadowData.blur(), color);
}
default:
ASSERT_NOT_REACHED();
return nullptr;
}
}
void ObjectLoader::serializeShadow(SceneLight* light, XmlTreeNode* lightNode){
ShadowData* shadow = light->getShadowData();
if(shadow->isActive()){
lightNode->createAttribute("castShadow", "true");
// Agrego la propiedades de la sombra y su atributo de prebanked
XmlTreeNode* shadowNode = new XmlTreeNode("Shadow", lightNode);
lightNode->addChild(shadowNode);
string prebank = "false";
if(shadow->isPrebanked()){
prebank = "true";
}
shadowNode->createAttribute("prebanked", prebank);
// Agrego la propiedad del shadowMap
XmlTreeNode* shadowMapNode = new XmlTreeNode("ShadowMap", shadowNode);
shadowNode->addChild(shadowMapNode);
serializeToNode("Size", shadow->getShadowMapSize(), shadowMapNode);
serializeToNode("Perspective", shadow->getPerspectiveFovy(), shadowMapNode);
XmlTreeNode* shadowFilterNode = new XmlTreeNode("ShadowFilter", shadowNode);
shadowNode->addChild(shadowFilterNode);
serializeToNode("Factor", shadow->getPerspectiveFovy(), shadowFilterNode);
}
}