Lately I've been curious about the performance of glTexImage2D under
various conditions so last night I whipped up a new test program.
I've check it in demos/texdown.c
You can use the keyboard to change texture size, format, datatype,
toggle scaling/biasing, glTexSubImage loading, etc. and see the
performance in Mtexels/second and MB/second.
I'd like to further optimize glTex[Sub]Image performance in the
future. In the mean time, this program is interesting to play
with.
I'd like to re-implement texdown.c as a glean test in the future.
-Brian
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