use opengl in matlab , why it so slow?
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when I draw an image in figure using imshow with transparency property,The figure 'render' property changes to 'opengl' mode automatically,Then the figure reponse begin very slow! what is problem?
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Accepted Answer
Walter Roberson
on 30 Aug 2011
Try using the command
opengl software
and see if it is any faster.
The OpenGL renderer is the only one that supports transparency. If you do not have a fast graphics card or do not have fast memory, then OpenGL can be slow.
What kind of graphics card do you have? If it is NVidia based, then when was the last time you checked to see whether there was a newer NVidia driver for the card?
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Walter Roberson
on 30 Aug 2011
To be honest... Yes, that card is bad news for anything more than office graphics.
http://www.techwarelabs.com/reviews/video/ati-3450/index_8.shtml
http://www.videocardbenchmark.net/video_lookup.php?gpu=Radeon+HD+3450
You can get three times the performance for half the price, or 10 times the performance for the same price.
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