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Remove nodes with no opaque elements.

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This commit is contained in:
Andrzej Kapolka 2014-10-20 12:27:49 -07:00
parent 662189159d
commit e586b6e29b
1 changed files with 16 additions and 0 deletions
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16
libraries/metavoxels/src/MetavoxelMessages.cpp
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@ -734,6 +734,22 @@ int VoxelMaterialSpannerEditVisitor::visit(MetavoxelInfo& info) {
}
}
}
// if there are no visible colors, we can clear everything
bool foundOpaque = false;
for (const QRgb* src = colorContents.constData(), *end = src + colorContents.size(); src != end; src++) {
if (qAlpha(*src) != 0) {
foundOpaque = true;
break;
}
}
if (!foundOpaque) {
info.outputValues[0] = AttributeValue(_outputs.at(0));
info.outputValues[1] = AttributeValue(_outputs.at(1));
info.outputValues[2] = AttributeValue(_outputs.at(2));
return STOP_RECURSION;
}
VoxelColorDataPointer newColorPointer(new VoxelColorData(colorContents, VOXEL_BLOCK_SAMPLES));
info.outputValues[0] = AttributeValue(info.inputValues.at(0).getAttribute(),
encodeInline<VoxelColorDataPointer>(newColorPointer));