diff options
| author | Kenneth Graunke <kenneth@whitecape.org> | 2012-02-14 12:43:21 -0800 |
|---|---|---|
| committer | Kenneth Graunke <kenneth@whitecape.org> | 2012-02-15 17:17:16 -0800 |
| commit | 740123fff754fac9da3e9807e2fcd05d66690866 (patch) | |
| tree | 519e66f1b88644a3505937953a466c2e7f26336d | |
| parent | ff1d9450321d5fe164611f819ee299706d9cbe02 (diff) | |
i965/fs: Add a new fs_inst::regs_written function.
Certain instructions write more than one register. Texturing, for
example, returns 4 registers. (We set rlen to 4 even for TXS and float
shadow sampling.) Some math functions return 2. Most return 1.
The next commit introduces a use of this function.
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
(cherry picked from commit 8ab02b511882857a09fceed0e93bf4a0b25c17b2)
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs.h b/src/mesa/drivers/dri/i965/brw_fs.h index 5fdc055770a..9a2cc08b631 100644 --- a/src/mesa/drivers/dri/i965/brw_fs.h +++ b/src/mesa/drivers/dri/i965/brw_fs.h @@ -286,6 +286,18 @@ public: offset == inst->offset); } + int regs_written() + { + if (is_tex()) + return 4; + + /* The SINCOS and INT_DIV_QUOTIENT_AND_REMAINDER math functions return 2, + * but we don't currently use them...nor do we have an opcode for them. + */ + + return 1; + } + bool is_tex() { return (opcode == SHADER_OPCODE_TEX || |