[Fluxus] Fwd: Texture Coordinates in 4th Quadrant?? (aka upside down textures)

Scott alcoholiday at gmail.com
Sun Mar 15 16:36:01 PDT 2009


(resend without attached picture)


OK - am I crazy?

It looks like textures are upside down!? I've always considered texture
space to be 1st quadrent (0,0 = lower left, 1,1 = upper right).
But all my playing with fluxus-016 (osx) shows that 0,0 is UPPER left and
1,1 is lower right! I just went and tried 015 too, and same results.

I've built quads, boxes, checked texture coordinates, and even ran the
sample from the documentation:

(clear)
(texture-params 0 '(wrap-s clamp wrap-t clamp))
(texture (load-texture "refmap.png"))
(with-primitive (build-cube)
    (pdata-map!
        (lambda (t)
            (vadd (vector -0.5 -0.5 0) (vmul t 2)))
    "t"))

And in all cases the texture is flipped vertically.
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