[Mesa-dev] [PATCH 5/6] i965: Enable the GL_ARB_texture_compression_bptc extension

[Ilia Mirkin]

On Tue, Jul 22, 2014 at 3:10 PM, Neil Roberts <neil at linux.intel.com> wrote:
> Enables the BPTC extension on Gen>=7 and adds the necessary format mappings to
> get the right surface type value.
> ---
>  src/mesa/drivers/dri/i965/brw_surface_formats.c | 5 +++++
>  src/mesa/drivers/dri/i965/intel_extensions.c    | 2 ++
>  2 files changed, 7 insertions(+)
>
> diff --git a/src/mesa/drivers/dri/i965/brw_surface_formats.c b/src/mesa/drivers/dri/i965/brw_surface_formats.c
> index 41f4221..974f2df 100644
> --- a/src/mesa/drivers/dri/i965/brw_surface_formats.c
> +++ b/src/mesa/drivers/dri/i965/brw_surface_formats.c
> @@ -487,6 +487,11 @@ brw_format_for_mesa_format(mesa_format mesa_format)
>        [MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1] = BRW_SURFACEFORMAT_ETC2_RGB8_PTA,
>        [MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1] = BRW_SURFACEFORMAT_ETC2_SRGB8_PTA,
>
> +      [MESA_FORMAT_BPTC_RGBA_UNORM] = BRW_SURFACEFORMAT_BC7_UNORM,
> +      [MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM] = BRW_SURFACEFORMAT_BC7_UNORM_SRGB,
> +      [MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT] = BRW_SURFACEFORMAT_BC6H_SF16,
> +      [MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT] = BRW_SURFACEFORMAT_BC6H_UF16,
> +
>        [MESA_FORMAT_A_SNORM8] = 0,
>        [MESA_FORMAT_L_SNORM8] = 0,
>        [MESA_FORMAT_L8A8_SNORM] = 0,
> diff --git a/src/mesa/drivers/dri/i965/intel_extensions.c b/src/mesa/drivers/dri/i965/intel_extensions.c
> index fe40068..13f2205 100644
> --- a/src/mesa/drivers/dri/i965/intel_extensions.c
> +++ b/src/mesa/drivers/dri/i965/intel_extensions.c
> @@ -301,6 +301,8 @@ intelInitExtensions(struct gl_context *ctx)
>           ctx->Extensions.ARB_viewport_array = true;
>           ctx->Extensions.AMD_vertex_shader_viewport_index = true;
>        }
> +
> +      ctx->Extensions.ARB_texture_compression_bptc = true;

Might want to make a mention in docs/GL3.txt and
docs/relnotes/10.3.html (opinions differ on whether that should go
into the same commit or a separate commit, do whatever you prefer).

>     }
>
>     if (brw->gen >= 8) {
> --
> 1.9.3
>
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