[Mesa-dev] [PATCH] radv: add an option for disabling NGG on GFX10

[Bas Nieuwenhuizen]

Please add the option to get_hash_flags in radv_pipeline.c too, so it
does not poison the cache.

On Sun, Jul 7, 2019 at 7:35 PM Samuel Pitoiset
<samuel.pitoiset at gmail.com> wrote:
>
> Will be useful for testing the legacy path.
>
> Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
> ---
>  src/amd/vulkan/radv_debug.h    | 1 +
>  src/amd/vulkan/radv_device.c   | 1 +
>  src/amd/vulkan/radv_pipeline.c | 3 ++-
>  3 files changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/src/amd/vulkan/radv_debug.h b/src/amd/vulkan/radv_debug.h
> index 75e28000e14..723fabda57f 100644
> --- a/src/amd/vulkan/radv_debug.h
> +++ b/src/amd/vulkan/radv_debug.h
> @@ -52,6 +52,7 @@ enum {
>         RADV_DEBUG_NOTHREADLLVM      = 0x400000,
>         RADV_DEBUG_NOBINNING         = 0x800000,
>         RADV_DEBUG_NO_LOAD_STORE_OPT = 0x1000000,
> +       RADV_DEBUG_NO_NGG            = 0x2000000,
>  };
>
>  enum {
> diff --git a/src/amd/vulkan/radv_device.c b/src/amd/vulkan/radv_device.c
> index 4a1078a1b52..5a92e5276d9 100644
> --- a/src/amd/vulkan/radv_device.c
> +++ b/src/amd/vulkan/radv_device.c
> @@ -474,6 +474,7 @@ static const struct debug_control radv_debug_options[] = {
>         {"nothreadllvm", RADV_DEBUG_NOTHREADLLVM},
>         {"nobinning", RADV_DEBUG_NOBINNING},
>         {"noloadstoreopt", RADV_DEBUG_NO_LOAD_STORE_OPT},
> +       {"nongg", RADV_DEBUG_NO_NGG},
>         {NULL, 0}
>  };
>
> diff --git a/src/amd/vulkan/radv_pipeline.c b/src/amd/vulkan/radv_pipeline.c
> index 69acfdaec7d..db0fb50bbe7 100644
> --- a/src/amd/vulkan/radv_pipeline.c
> +++ b/src/amd/vulkan/radv_pipeline.c
> @@ -2253,7 +2253,8 @@ radv_fill_shader_keys(struct radv_device *device,
>                         keys[MESA_SHADER_VERTEX].vs.out.as_es = true;
>         }
>
> -       if (device->physical_device->rad_info.chip_class >= GFX10) {
> +       if (!(device->instance->debug_flags & RADV_DEBUG_NO_NGG) &&
> +           device->physical_device->rad_info.chip_class >= GFX10) {
>                 keys[MESA_SHADER_VERTEX].vs.out.as_ngg = true;
>         }
>
> --
> 2.22.0
>
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