Re: [Mesa-dev] [PATCH] i965/vs: Add a comment about writemasking on scratch writes.

2012-11-15 Thread Eric Anholt
Kenneth Graunke writes: > The OWord Dual Block Write message doesn't have a response length, so it > was surprising to a non-null destination register in the disassembly. > Not only that, but seeing g0 was especially confusing, as writing to g0 > would destroy critical payload information that's

[Mesa-dev] [PATCH] i965/vs: Add a comment about writemasking on scratch writes.

2012-11-15 Thread Kenneth Graunke
The OWord Dual Block Write message doesn't have a response length, so it was surprising to a non-null destination register in the disassembly. Not only that, but seeing g0 was especially confusing, as writing to g0 would destroy critical payload information that's needed for most SEND messages. I