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Fix bug where two references to a png object mask used against

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a dds terrain texture resulted in the object mask being flipped twice,
having no overall effect!
This commit is contained in:
Stuart Buchanan
2012-07-06 21:38:15 +01:00
parent 4f7f5023df
commit fa58672f09
1 changed files with 5 additions and 2 deletions
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simgear/scene/material/mat.cxx
+5 -2
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@@ -238,8 +238,11 @@ SGMaterial::read_properties(const SGReaderWriterOptions* options,
if (dds[i] != dds_mask) { if (dds[i] != dds_mask) {
// Texture format does not match mask format. This is relevant for // Texture format does not match mask format. This is relevant for
// the object mask, as DDS textures have an origin at the bottom // the object mask, as DDS textures have an origin at the bottom
// left rather than top left, therefore we flip the object mask // left rather than top left. Therefore we flip a copy of the image
// vertically. // (otherwise a second reference to the object mask would flip it
// back!).
SG_LOG(SG_GENERAL, SG_DEBUG, "Flipping object mask" << omname);
image = (osg::Image* ) image->clone(osg::CopyOp::SHALLOW_COPY);
image->flipVertical(); image->flipVertical();
} }