[Mesa-dev] [PATCH] anv: Advertise support for VK_FORMAT_R8_SRGB

[Lionel Landwerlin]

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin at intel.com>

On 30/06/17 02:53, Jason Ekstrand wrote:
> Unreal Engine 4 seems to really like this format for some reason.  We
> don't technically have the hardware format but we do have L8_SRGB.  It's
> easy enough to fake with that and a swizzle.
> ---
>   src/intel/vulkan/anv_formats.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/src/intel/vulkan/anv_formats.c b/src/intel/vulkan/anv_formats.c
> index 0bc81d1..3535c09 100644
> --- a/src/intel/vulkan/anv_formats.c
> +++ b/src/intel/vulkan/anv_formats.c
> @@ -74,7 +74,8 @@ static const struct anv_format anv_formats[] = {
>      fmt(VK_FORMAT_R8_SSCALED,              ISL_FORMAT_R8_SSCALED),
>      fmt(VK_FORMAT_R8_UINT,                 ISL_FORMAT_R8_UINT),
>      fmt(VK_FORMAT_R8_SINT,                 ISL_FORMAT_R8_SINT),
> -   fmt(VK_FORMAT_R8_SRGB,                 ISL_FORMAT_UNSUPPORTED),
> +   swiz_fmt(VK_FORMAT_R8_SRGB,            ISL_FORMAT_L8_UNORM_SRGB,
> +                                          _ISL_SWIZZLE(RED, ZERO, ZERO, ONE)),
>      fmt(VK_FORMAT_R8G8_UNORM,              ISL_FORMAT_R8G8_UNORM),
>      fmt(VK_FORMAT_R8G8_SNORM,              ISL_FORMAT_R8G8_SNORM),
>      fmt(VK_FORMAT_R8G8_USCALED,            ISL_FORMAT_R8G8_USCALED),