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POWPF 3D video memory efficiency
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copied!<p>Ill try to explain my situation as best as I can, sorry if it is not too clear...</p> <p>I have a Viewport3D that contains some large 3d rectangles that are like big crystals.</p> <p>When the user click on one of the crystals, I add a new material to the crystal in the spot the use clicked using an ImageBrush. I then iterate over a list of bitmaps (<code>List<BitmapImage></code> collection) and update the ImageBrush each frame to create an animation on the 3D crystal.</p> <p>This works nice and I have up to 5 different effects playing on the crystals, but after profiling my application, I have discovered that due to mipmaps (I think) and the way 3d renders, my video memory jumps through the roof!!</p> <p>By my calculation, if I have a 75 frame animation, by 400x400 running at 4 bytes per pixel, and having ~5 different animations piled up, you can see how this can get large :)</p> <p>75 * 400 * 400 * 4 * 5 = ~250MB</p> <p>this is an issue, not only because of the size, but also, the BitmapImages stay in Video Memory until I make them null, which is very annoying and performance costly.</p> <p>My idea to fix this is to change from having <code>List<BitmapImage></code> collection, to having a <code>List<Byte[]></code> and rather than updating an ImageSource, I would like to try to use a <code>WriteableBitmap</code> that write the bytes to it.</p> <p>The issue is I have no idea how to read bytes from a PNG file, then create a <code>WriteableBitmap</code> and write the bytes to it over and over in an efficient manor.</p> <p>Can anyone please help me out?</p>

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