[Mesa-dev] [PATCH 06/12] i965/cnl: Modify thread count shift for VS

[Jason Ekstrand]

I think this patch can be dropped with Rafiel's genxml work.

On Fri, Apr 14, 2017 at 5:35 PM, Anuj Phogat <anuj.phogat at gmail.com> wrote:

> From: Ben Widawsky <benjamin.widawsky at intel.com>
>
> Signed-off-by: Ben Widawsky <benjamin.widawsky at intel.com>
> ---
>  src/mesa/drivers/dri/i965/brw_defines.h   | 1 +
>  src/mesa/drivers/dri/i965/gen8_vs_state.c | 6 +++++-
>  2 files changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/src/mesa/drivers/dri/i965/brw_defines.h
> b/src/mesa/drivers/dri/i965/brw_defines.h
> index 08106c0..688ff61 100644
> --- a/src/mesa/drivers/dri/i965/brw_defines.h
> +++ b/src/mesa/drivers/dri/i965/brw_defines.h
> @@ -607,6 +607,7 @@ enum brw_wrap_mode {
>  /* DW5 */
>  # define GEN6_VS_MAX_THREADS_SHIFT                     25
>  # define HSW_VS_MAX_THREADS_SHIFT                      23
> +# define GEN10_VS_MAX_THREADS_SHIFT                     22
>  # define GEN6_VS_STATISTICS_ENABLE                     (1 << 10)
>  # define GEN6_VS_CACHE_DISABLE                         (1 << 1)
>  # define GEN6_VS_ENABLE                                        (1 << 0)
> diff --git a/src/mesa/drivers/dri/i965/gen8_vs_state.c
> b/src/mesa/drivers/dri/i965/gen8_vs_state.c
> index 7b66da4..c4ad9cd 100644
> --- a/src/mesa/drivers/dri/i965/gen8_vs_state.c
> +++ b/src/mesa/drivers/dri/i965/gen8_vs_state.c
> @@ -75,7 +75,11 @@ upload_vs_state(struct brw_context *brw)
>     uint32_t simd8_enable =
>        vue_prog_data->dispatch_mode == DISPATCH_MODE_SIMD8 ?
>        GEN8_VS_SIMD8_ENABLE : 0;
> -   OUT_BATCH(((devinfo->max_vs_threads - 1) << HSW_VS_MAX_THREADS_SHIFT)
> |
> +
> +   uint32_t threads = (devinfo->max_vs_threads - 1);
> +   threads <<= brw->gen >= 10 ? GEN10_VS_MAX_THREADS_SHIFT :
> +                                HSW_VS_MAX_THREADS_SHIFT;
> +   OUT_BATCH(threads |
>               GEN6_VS_STATISTICS_ENABLE |
>               simd8_enable |
>               GEN6_VS_ENABLE);
> --
> 2.9.3
>
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