[Mesa-dev] [PATCH v2 02/18] i965/fs: Fix fs_inst::regs_read() for uniform pull constant loads

[Matt Turner]

On Fri, Jun 19, 2015 at 1:18 PM, Jason Ekstrand <jason at jlekstrand.net> wrote:
> Previously, fs_inst::regs_read() fell back to depending on the register
> width for the second source.  This isn't really correct since it isn't a
> SIMD8 value at all, but a SIMD4x2 value.  This commit changes it to
> explicitly be always one register.
>
> Reviewed-by: Iago Toral Quiroga <itoral at igalia.com>
>
> v2: Use mlen for determining the number of registers written
> ---
>  src/mesa/drivers/dri/i965/brw_fs.cpp | 6 ++++++
>  1 file changed, 6 insertions(+)
>
> diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
> index 17a940b..6d25ba4 100644
> --- a/src/mesa/drivers/dri/i965/brw_fs.cpp
> +++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
> @@ -758,6 +758,12 @@ fs_inst::regs_read(int arg) const
>           return mlen;
>        break;
>
> +   case FS_OPCODE_UNIFORM_PULL_CONSTANT_LOAD_GEN7:
> +      /* The payload is actually storred in src1 */

stored just has one r