[Mesa-dev] [PATCH] radeonsi: fix broken tessellation on Carrizo and Stoney

[Alex Deucher]

On Thu, Feb 23, 2017 at 1:48 PM, Marek Olšák <maraeo at gmail.com> wrote:
> From: Marek Olšák <marek.olsak at amd.com>
>
> Cc: 13.0 17.0 <mesa-stable at lists.freedesktop.org>

Reviewed-by: Alex Deucher <alexander.deucher at amd.com>

> ---
>  src/gallium/drivers/radeonsi/si_state_shaders.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/src/gallium/drivers/radeonsi/si_state_shaders.c b/src/gallium/drivers/radeonsi/si_state_shaders.c
> index f615aa8..750cdd6 100644
> --- a/src/gallium/drivers/radeonsi/si_state_shaders.c
> +++ b/src/gallium/drivers/radeonsi/si_state_shaders.c
> @@ -2305,21 +2305,23 @@ static bool si_update_spi_tmpring_size(struct si_context *sctx)
>                            S_0286E8_WAVESIZE(scratch_bytes_per_wave >> 10);
>         if (spi_tmpring_size != sctx->spi_tmpring_size) {
>                 sctx->spi_tmpring_size = spi_tmpring_size;
>                 si_mark_atom_dirty(sctx, &sctx->scratch_state);
>         }
>         return true;
>  }
>
>  static void si_init_tess_factor_ring(struct si_context *sctx)
>  {
> -       bool double_offchip_buffers = sctx->b.chip_class >= CIK;
> +       bool double_offchip_buffers = sctx->b.chip_class >= CIK &&
> +                                     sctx->b.family != CHIP_CARRIZO &&
> +                                     sctx->b.family != CHIP_STONEY;
>         unsigned max_offchip_buffers_per_se = double_offchip_buffers ? 128 : 64;
>         unsigned max_offchip_buffers = max_offchip_buffers_per_se *
>                                        sctx->screen->b.info.max_se;
>         unsigned offchip_granularity;
>
>         switch (sctx->screen->tess_offchip_block_dw_size) {
>         default:
>                 assert(0);
>                 /* fall through */
>         case 8192:
> --
> 2.7.4
>
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