GLubyte equivalent

Hello,
  I am procedurally generating a texture and calling glTexImage1D.  The last parameter asks for a Buffer, should I be putting in ByteBuffer? If so, is the second last parameter GL_UNSIGNED_BYTE? Would Byte.MAX_VALUE be equivalent to (GLubyte)255?

Thanks in advance.
Regards,
rullie

On Tuesday, August 31, 2010 07:34:42 pm rullie [via jogamp] wrote:
>
> Hello,
>   I am procedurally generating a texture and calling glTexImage1D.  The last
> parameter asks for a Buffer, should I be putting in ByteBuffer? If so, is
> the second last parameter GL_UNSIGNED_BYTE? Would Byte.MAX_VALUE be
> equivalent to (GLubyte)255?

You have to use the byte, or NIO's ByteBuffer respectively
and encode the data as it would be unsigned.

http://www.darksleep.com/player/JavaAndUnsignedTypes.html

We use this kind of an approach all over the place ..

Hope it helps, Sven

On Tuesday, August 31, 2010 07:34:42 pm rullie [via jogamp] wrote:
>
> Hello,
>   I am procedurally generating a texture and calling glTexImage1D.  The last
> parameter asks for a Buffer, should I be putting in ByteBuffer? If so, is
> the second last parameter GL_UNSIGNED_BYTE? Would Byte.MAX_VALUE be
> equivalent to (GLubyte)255?
>

http://bytes.com/topic/java/answers/517554-unsigned-byte-values

another .. hack ..

> Thanks in advance.
> Regards,
> rullie
>
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