On Sat, 5 Mar 2005, Ben Skeggs wrote:
Vladimir Dergachev wrote:
It is easier to get the format right when you are adding it (and know which entry you are messing is), rather than add it blindly and then find out that a couple of components are in the wrong order.
I'm not entirely sure of how to correctly define the texture formats.
While I was messing with texenv's I made texenv.c printf what format it was using,
and changed the WARN_ONCE into a printf to find out all the missing formats.
I ended up adding something for entry 15, which corresponded to when texenv.c was using GL_ALPHA. I added R300_EASY_TX_FORMAT(W, X, X, X, ALPHA_1CH) to get the result to *look* correct, but I don't know if it *is* correct.
To get the idea of what format is required look first at the old R200 table. For entry 15 it says _ALPHA(I8) . This means that we have 8-bit image, with single channel, I probably stands for intensity, and _ALPHA just toggles a bit in R200 indicating alpha channel is present.
Thus I would try one of these R300 variants:
R300_EASY_TX_FORMAT(ONE, ONE, ONE, X, X8)
or
R300_EASY_TX_FORMAT(X, X, X, X, X8)
One of these should look right and the other be either dimmer or lighter than intended.
best
Vladimir Dergachev
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