Hi all,
I have 12 bit gray images and want them to use as transparent textures.
What method would be the best if you look at speed and/or memory ? (I
will have about 60-100 images of format 512x512, so it's hard work for
my graphics card and memory bus)
1) convert it to RGBA format and use ImageComponent.FORMAT_RGBA.
2) convert it to an individual Format of 2 byte components (one for
alpha, one for gray value) and use ImageComponent.FORMAT_LUM8_ALPHA8 and
color object white (or black ? ) ?
3) convert it to 1 byte format and use it twice with format
FORMAT_CHANNEL8 (one time used as gray value (= luminance ?) and one
time used as alpha value) and combine the textures ?
Do I have to convert it into a byte format at all ?
Any other suggestions ?
This is a bit off topic but can I define a BandedSampleModel e.g. like
this:
new BandedSampleModel( DataBuffer.TYPE_BYTE, width, height, width, new
int[ ]{ 0 }, new int[ ]{ 0, 0, 0, 0 } ) ?
Then I could define only one bank in (DataBuffer object) with
DataBuffer.TYPE_BYTE (If I must convert) and use this bank for all color
bands (should save a quarter of memory !).
regards
Paul
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