03.12.2010 17:22, Robert Osfield wrote:
Hi Thomas,
I'm not sure of what form this method needs to take yet.. will do some
further thinking on the topic.
I have settled upon a new SubloadCallback method:
class OSG_EXPORT SubloadCallback : public Referenced
{
public:
virtual bool textureObjectValid(const Texture2D&
texture, State& state) const
{
return texture.textureObjectValid(state);
}
...
};
And a new Texture2D helper method,
Texture2D::textureObjectValid(State&) that can be used by the
SubloadCallback as above with the default implementation, or by
osg::Texture2D::apply() itself to tell whether any modifications to
the Texture2D's Image will mean that the TextureObject needs
discarding and a new one to be created.
Your latest changes caused very often call of computeInternalFormat,
computeRequiredTextureDimensions and textureObject->match methods.
In previous code this methods called only when
getModifiedCount(contextID) != _image->getModifiedCount().
Maybe would be better something like that:
Index: src/osg/Texture2D.cpp
===================================================================
--- src/osg/Texture2D.cpp (revision 11982)
+++ src/osg/Texture2D.cpp (working copy)
@@ -160,7 +160,7 @@
// get the texture object for the current contextID.
TextureObject* textureObject = getTextureObject(contextID);
- if (textureObject && !textureObjectValid(state))
+ if (textureObject)
{
bool textureObjectInvalidated = false;
if (_subloadCallback.valid())
Mikhail.
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