[Mesa-stable] [Mesa-dev] [PATCH] radv: don't fast clear HTILE for 16-bit depth surfaces on GFX8

[Bas Nieuwenhuizen]

Reviewed-by: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>

On Wed, Jun 13, 2018 at 8:19 PM, Samuel Pitoiset
<samuel.pitoiset at gmail.com> wrote:
> This causes rendering issues in Shadow Warrior 2 with DXVK.
>
> Cc: mesa-stable at lists.freedesktop.org
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=106912
> Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
> ---
>  src/amd/vulkan/radv_meta_clear.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
>
> diff --git a/src/amd/vulkan/radv_meta_clear.c b/src/amd/vulkan/radv_meta_clear.c
> index fae441ceb6..373072dd36 100644
> --- a/src/amd/vulkan/radv_meta_clear.c
> +++ b/src/amd/vulkan/radv_meta_clear.c
> @@ -717,6 +717,14 @@ emit_fast_htile_clear(struct radv_cmd_buffer *cmd_buffer,
>         if ((clear_value.depth != 0.0 && clear_value.depth != 1.0) || !(aspects & VK_IMAGE_ASPECT_DEPTH_BIT))
>                 goto fail;
>
> +       /* GFX8 only supports 32-bit depth surfaces but we can enable TC-compat
> +        * HTILE for 16-bit surfaces if no Z planes are compressed. Though,
> +        * fast HTILE clears don't seem to work.
> +        */
> +       if (cmd_buffer->device->physical_device->rad_info.chip_class == VI &&
> +           iview->image->vk_format == VK_FORMAT_D16_UNORM)
> +               goto fail;
> +
>         if (vk_format_aspects(iview->image->vk_format) & VK_IMAGE_ASPECT_STENCIL_BIT) {
>                 if (clear_value.stencil != 0 || !(aspects & VK_IMAGE_ASPECT_STENCIL_BIT))
>                         goto fail;
> --
> 2.17.1
>
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