Open neobrain opened 9 years ago
Caelina's shaders actually use the form add r4, r1, r4
quite a lot. Is there documentation suggesting that the hardware may not be supporting this?
Hmm interesting. There is no specific documentation which suggested this, it's just something which sounded reasonable.
It sounds likely that hardware does not actually support this. A hardware test should be written to verify that it doesn't, and a diagnostic should be added to make sure source code doesn't try to do this.
Example of what I'm talking about:
add r4, i0, r4
. Note that r4 is used both as an input and an output of the addition.