bool SpannerQRgbAttribute::merge(void*& parent, void* children[], bool postRead) const {
if (postRead) {
for (int i = 0; i < MERGE_COUNT; i++) {
if (qAlpha(decodeInline<QRgb>(children[i])) != 0) {
return false;
}
}
return true;
}
QRgb parentValue = decodeInline<QRgb>(parent);
int totalAlpha = qAlpha(parentValue) * Attribute::MERGE_COUNT;
int totalRed = qRed(parentValue) * totalAlpha;
int totalGreen = qGreen(parentValue) * totalAlpha;
int totalBlue = qBlue(parentValue) * totalAlpha;
bool allChildrenTransparent = true;
for (int i = 0; i < Attribute::MERGE_COUNT; i++) {
QRgb value = decodeInline<QRgb>(children[i]);
int alpha = qAlpha(value);
totalRed += qRed(value) * alpha;
totalGreen += qGreen(value) * alpha;
totalBlue += qBlue(value) * alpha;
totalAlpha += alpha;
allChildrenTransparent &= (alpha == 0);
}
if (totalAlpha == 0) {
parent = encodeInline(QRgb());
} else {
parent = encodeInline(qRgba(totalRed / totalAlpha, totalGreen / totalAlpha,
totalBlue / totalAlpha, totalAlpha / MERGE_COUNT));
}
return allChildrenTransparent;
}
void* QRgbAttribute::createFromVariant(const QVariant& value) const {
switch (value.userType()) {
case QMetaType::QColor:
return encodeInline(value.value<QColor>().rgba());
default:
return encodeInline((QRgb)value.toUInt());
}
}
void* QRgbAttribute::mix(void* first, void* second, float alpha) const {
QRgb firstValue = decodeInline<QRgb>(first);
QRgb secondValue = decodeInline<QRgb>(second);
return encodeInline(qRgba(
glm::mix((float)qRed(firstValue), (float)qRed(secondValue), alpha),
glm::mix((float)qGreen(firstValue), (float)qGreen(secondValue), alpha),
glm::mix((float)qBlue(firstValue), (float)qBlue(secondValue), alpha),
glm::mix((float)qAlpha(firstValue), (float)qAlpha(secondValue), alpha)));
}
void* QRgbAttribute::blend(void* source, void* dest) const {
QRgb sourceValue = decodeInline<QRgb>(source);
QRgb destValue = decodeInline<QRgb>(dest);
float alpha = qAlpha(sourceValue) / EIGHT_BIT_MAXIMUM;
return encodeInline(qRgba(
glm::mix((float)qRed(destValue), (float)qRed(sourceValue), alpha),
glm::mix((float)qGreen(destValue), (float)qGreen(sourceValue), alpha),
glm::mix((float)qBlue(destValue), (float)qBlue(sourceValue), alpha),
glm::mix((float)qAlpha(destValue), (float)qAlpha(sourceValue), alpha)));
}
bool PackedNormalAttribute::merge(void*& parent, void* children[], bool postRead) const {
QRgb firstValue = decodeInline<QRgb>(children[0]);
glm::vec3 total = unpackNormal(firstValue) * (float)qAlpha(firstValue);
bool allChildrenEqual = true;
for (int i = 1; i < Attribute::MERGE_COUNT; i++) {
QRgb value = decodeInline<QRgb>(children[i]);
total += unpackNormal(value) * (float)qAlpha(value);
allChildrenEqual &= (firstValue == value);
}
float length = glm::length(total);
parent = encodeInline(length < EPSILON ? QRgb() : packNormal(total / length));
return allChildrenEqual;
}
bool QRgbAttribute::merge(void*& parent, void* children[], bool postRead) const {
QRgb firstValue = decodeInline<QRgb>(children[0]);
int totalAlpha = qAlpha(firstValue);
int totalRed = qRed(firstValue) * totalAlpha;
int totalGreen = qGreen(firstValue) * totalAlpha;
int totalBlue = qBlue(firstValue) * totalAlpha;
bool allChildrenEqual = true;
for (int i = 1; i < Attribute::MERGE_COUNT; i++) {
QRgb value = decodeInline<QRgb>(children[i]);
int alpha = qAlpha(value);
totalRed += qRed(value) * alpha;
totalGreen += qGreen(value) * alpha;
totalBlue += qBlue(value) * alpha;
totalAlpha += alpha;
allChildrenEqual &= (firstValue == value);
}
if (totalAlpha == 0) {
parent = encodeInline(QRgb());
} else {
parent = encodeInline(qRgba(totalRed / totalAlpha, totalGreen / totalAlpha,
totalBlue / totalAlpha, totalAlpha / MERGE_COUNT));
}
return allChildrenEqual;
}
bool QRgbAttribute::merge(void*& parent, void* children[]) const {
QRgb firstValue = decodeInline<QRgb>(children[0]);
int totalRed = qRed(firstValue);
int totalGreen = qGreen(firstValue);
int totalBlue = qBlue(firstValue);
int totalAlpha = qAlpha(firstValue);
bool allChildrenEqual = true;
for (int i = 1; i < Attribute::MERGE_COUNT; i++) {
QRgb value = decodeInline<QRgb>(children[i]);
totalRed += qRed(value);
totalGreen += qGreen(value);
totalBlue += qBlue(value);
totalAlpha += qAlpha(value);
allChildrenEqual &= (firstValue == value);
}
parent = encodeInline(qRgba(totalRed / MERGE_COUNT, totalGreen / MERGE_COUNT,
totalBlue / MERGE_COUNT, totalAlpha / MERGE_COUNT));
return allChildrenEqual;
}
void MetavoxelSystem::init() {
if (!_program.isLinked()) {
switchToResourcesParentIfRequired();
_program.addShaderFromSourceFile(QGLShader::Vertex, "resources/shaders/metavoxel_point.vert");
_program.link();
_pointScaleLocation = _program.uniformLocation("pointScale");
}
AttributeRegistry::getInstance()->configureScriptEngine(&_scriptEngine);
QFile scriptFile("resources/scripts/sphere.js");
scriptFile.open(QIODevice::ReadOnly);
QScriptValue guideFunction = _scriptEngine.evaluate(QTextStream(&scriptFile).readAll());
_data.setAttributeValue(MetavoxelPath(), AttributeValue(AttributeRegistry::getInstance()->getGuideAttribute(),
encodeInline(PolymorphicDataPointer(new ScriptedMetavoxelGuide(guideFunction)))));
_buffer.setUsagePattern(QOpenGLBuffer::DynamicDraw);
_buffer.create();
}
bool SpannerPackedNormalAttribute::merge(void*& parent, void* children[], bool postRead) const {
if (postRead) {
for (int i = 0; i < MERGE_COUNT; i++) {
if (qAlpha(decodeInline<QRgb>(children[i])) != 0) {
return false;
}
}
return true;
}
QRgb parentValue = decodeInline<QRgb>(parent);
glm::vec3 total = unpackNormal(parentValue) * (float)(qAlpha(parentValue) * Attribute::MERGE_COUNT);
bool allChildrenTransparent = true;
for (int i = 0; i < Attribute::MERGE_COUNT; i++) {
QRgb value = decodeInline<QRgb>(children[i]);
int alpha = qAlpha(value);
total += unpackNormal(value) * (float)alpha;
allChildrenTransparent &= (alpha == 0);
}
float length = glm::length(total);
parent = encodeInline(length < EPSILON ? QRgb() : packNormal(total / length));
return allChildrenTransparent;
}
void* QRgbAttribute::createFromScript(const QScriptValue& value, QScriptEngine* engine) const {
return encodeInline((QRgb)value.toUInt32());
}
void* PackedNormalAttribute::blend(void* source, void* dest) const {
QRgb sourceValue = decodeInline<QRgb>(source);
QRgb destValue = decodeInline<QRgb>(dest);
float alpha = qAlpha(sourceValue) / EIGHT_BIT_MAXIMUM;
return encodeInline(packNormal(glm::normalize(glm::mix(unpackNormal(destValue), unpackNormal(sourceValue), alpha))));
}
void* PackedNormalAttribute::mix(void* first, void* second, float alpha) const {
glm::vec3 firstNormal = unpackNormal(decodeInline<QRgb>(first));
glm::vec3 secondNormal = unpackNormal(decodeInline<QRgb>(second));
return encodeInline(packNormal(glm::normalize(glm::mix(firstNormal, secondNormal, alpha))));
}
void* SharedObjectAttribute::createFromVariant(const QVariant& value) const {
return create(encodeInline(value.value<SharedObjectPointer>()));
}