I'm a little new to OpenGL, although I'm sure my problem is using the used pixel format or how my texture is created ...
I paint the texture on a flat 2D quad using the 16-bit RGB5_A1 format, although at this stage I am not using alpha. The problem I am facing is that each pair of horizontal pixel values has been replaced.
That is ... if the pixel positions should be in that order (suppose an 8x2 image)
0 1 2 3
4 5 6 7
instead they are drawn as
1 0 3 2
5 4 7 6
Or, more clearly from this image (below). On the left is what I get ... Right is what I have to get.
.
, ... ? - ? , , , , . .
. , . , , 32- ( 24-).