diff options
| author | Kenneth Graunke <[email protected]> | 2012-02-14 12:43:21 -0800 |
|---|---|---|
| committer | Kenneth Graunke <[email protected]> | 2012-02-15 11:44:05 -0800 |
| commit | 8ab02b511882857a09fceed0e93bf4a0b25c17b2 (patch) | |
| tree | 9fe39aaa02c2f4b4ec31fbd068fa170f08cb4a57 /src/mesa | |
| parent | c89b471f8cd3da6c07eb437caabb2e648027f8bb (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.
NOTE: This is a candidate for the 8.0 branch (dependency of a fix).
Reviewed-by: Eric Anholt <[email protected]>
Signed-off-by: Kenneth Graunke <[email protected]>
Diffstat (limited to 'src/mesa')
| -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 060aa363746..0a37b39c09d 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 || |