On Tue, Apr 14, 2015 at 4:15 PM, Matt Turner <matts...@gmail.com> wrote:
> We don't want to set compression control on a SIMD16 instruction
> operating on words or smaller.
PRM/bspec quote please
> ---
> src/mesa/drivers/dri/i965/brw_fs_generator.cpp | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
> b/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
> index 102923a..b824dd3 100644
> --- a/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
> +++ b/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
> @@ -1620,7 +1620,10 @@ fs_generator::generate_code(const cfg_t *cfg, int
> dispatch_width)
> break;
> case 16:
> case 32:
> - brw_set_default_compression_control(p, BRW_COMPRESSION_COMPRESSED);
> + if (type_sz(inst->dst.type) < sizeof(float))
> + brw_set_default_compression_control(p, BRW_COMPRESSION_NONE);
> + else
> + brw_set_default_compression_control(p,
> BRW_COMPRESSION_COMPRESSED);
> break;
> default:
> unreachable("Invalid instruction width");
> --
> 2.0.5
>
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