On 09/30/2011 12:18 PM, Ian Romanick wrote:
On 09/29/2011 11:00 PM, Carl Worth wrote:
2. if/if-arg-must-be-defined-02.frag
Neither this test nor if-arg-must-be-defined-01 produce the desired
result on NVIDIA's blob or AMD's blob. I'd be curious to know what it
does on Apple's implementation.
In any case, the test quotes specific language from the GLSL spec that
explicitly forbids this behavior, so I'm somewhat reluctant to deviate
from the spec'ed behavior.
Though, it turns out that this deviates from what C99 specifies.
Specifically, the ISO/IEC 9899:TC2 Committee Draft dated May 6, 2005 says:
"After all replacements due to macro expansion and the defined unary
operator have been performed, all remaining identifiers are replaced
with the pp-number 0..."
I've submitted a GLSL spec bug.
In the mean time, I'd suggest leaving the tests and our implementation
as-is.
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