diff options
| author | Eric Anholt <[email protected]> | 2011-08-30 15:59:26 -0700 |
|---|---|---|
| committer | Eric Anholt <[email protected]> | 2011-09-06 18:01:23 -0700 |
| commit | 9f842886077258ddda5d5a32b1f5d9fe2e5818bc (patch) | |
| tree | 67acdaefff6e5600710b29374e737d2621ca3b23 | |
| parent | 87be0ac96ce5aaea2a08f1ed63871c0dd3a3f9d5 (diff) | |
i965/vs: Make pre-gen6 math operate in vector mode instead of scalar.
On the old backend, we used scalar mode because Mesa IR math is
result.xyzw = math(op0.xxxx), which matched up well. However, in GLSL
IR we do things like result.xy = math(op0.xy), so we want vector mode.
For the common case of result.x = math(op0.x), performance will be the
same (no cost for un-executed channels), though result.xyzw =
math(op0.xxxx) would be worse.
Reviewed-by: Kenneth Graunke <[email protected]>
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vec4_emit.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_emit.cpp b/src/mesa/drivers/dri/i965/brw_vec4_emit.cpp index 4b8b276bb39..828a9c1f9cb 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4_emit.cpp +++ b/src/mesa/drivers/dri/i965/brw_vec4_emit.cpp @@ -259,7 +259,7 @@ vec4_visitor::generate_math1_gen4(vec4_instruction *inst, BRW_MATH_SATURATE_NONE, inst->base_mrf, src, - BRW_MATH_DATA_SCALAR, + BRW_MATH_DATA_VECTOR, BRW_MATH_PRECISION_FULL); } |