[Mesa-dev] [PATCH v3 13/14] nvc0: expose ARB_compute_variable_group_size

[Ilia Mirkin]

FWIW this limits it to 32 regs on Fermi. IMO that's pretty limiting,
esp given how shitty our RA is. I think we should do 512 for Fermi and
1024 for Kepler+. [A matching adjustment will be needed in codegen.]

On Mon, Sep 26, 2016 at 1:23 PM, Samuel Pitoiset
<samuel.pitoiset at gmail.com> wrote:
> Let's return the same number of threads per block for both fixed and
> variable sizes.
>
> Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
> ---
>  src/gallium/drivers/nouveau/nvc0/nvc0_screen.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
> index df6c6af..6540c31 100644
> --- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
> +++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
> @@ -446,6 +446,7 @@ nvc0_screen_get_compute_param(struct pipe_screen *pscreen,
>        }
>     case PIPE_COMPUTE_CAP_MAX_BLOCK_SIZE:
>        RET(((uint64_t []) { 1024, 1024, 64 }));
> +   case PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK:
>     case PIPE_COMPUTE_CAP_MAX_THREADS_PER_BLOCK:
>        RET((uint64_t []) { 1024 });
>     case PIPE_COMPUTE_CAP_MAX_GLOBAL_SIZE: /* g[] */
> @@ -478,8 +479,6 @@ nvc0_screen_get_compute_param(struct pipe_screen *pscreen,
>        RET((uint32_t []) { 512 }); /* FIXME: arbitrary limit */
>     case PIPE_COMPUTE_CAP_ADDRESS_BITS:
>        RET((uint32_t []) { 64 });
> -   case PIPE_COMPUTE_CAP_MAX_VARIABLE_THREADS_PER_BLOCK:
> -      RET((uint64_t []) { 0 });
>     default:
>        return 0;
>     }
> --
> 2.10.0
>
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