diff options
| author | Matt Turner <[email protected]> | 2014-03-08 17:29:33 -0800 |
|---|---|---|
| committer | Matt Turner <[email protected]> | 2014-11-25 17:29:02 -0800 |
| commit | bf686b2785c63116ab4ab7e62eb77be51b97d346 (patch) | |
| tree | d0891e7ddfa76ebd56db3e95fcaffa3a2236340b /src/mesa/drivers/dri/i965/brw_shader.cpp | |
| parent | cb0ba848d4176c1ed2c4542fd5875867f460fc3b (diff) | |
i965/vec4: Optimize unpackUnorm4x8().
Reduces the number of instructions needed to implement unpackUnorm4x8()
from 11 -> 4.
Reviewed-by: Kenneth Graunke <[email protected]>
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_shader.cpp')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_shader.cpp | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_shader.cpp b/src/mesa/drivers/dri/i965/brw_shader.cpp index 6a14932629a..6cb2da8641f 100644 --- a/src/mesa/drivers/dri/i965/brw_shader.cpp +++ b/src/mesa/drivers/dri/i965/brw_shader.cpp @@ -85,8 +85,11 @@ brw_lower_packing_builtins(struct brw_context *brw, | LOWER_UNPACK_UNORM_2x16 | LOWER_PACK_SNORM_4x8 | LOWER_UNPACK_SNORM_4x8 - | LOWER_PACK_UNORM_4x8 - | LOWER_UNPACK_UNORM_4x8; + | LOWER_PACK_UNORM_4x8; + + if (shader_type == MESA_SHADER_FRAGMENT) { + ops |= LOWER_UNPACK_UNORM_4x8; + } if (brw->gen >= 7) { /* Gen7 introduced the f32to16 and f16to32 instructions, which can be |