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panfrost: Un/pack RGB565 and RGB5A1 

Basically the same as RGBA4

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5265>
This commit is contained in:
Alyssa Rosenzweig 2020-05-14 14:49:08 -04:00 committed by Marge Bot
parent ff590702da
commit 7de0e5500b
1 changed files with 52 additions and 0 deletions
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52
src/panfrost/util/pan_lower_framebuffer.c
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@ -299,6 +299,40 @@ pan_unpack_unorm_4(nir_builder *b, nir_ssa_def *v)
nir_imm_ivec4(b, 4, 4, 4, 4));
}
/* UNORM RGB5_A1 and RGB565 are similar */
static nir_ssa_def *
pan_pack_unorm_5551(nir_builder *b, nir_ssa_def *v)
{
return pan_pack_unorm_small(b, v,
nir_imm_vec4_16(b, 31.0, 31.0, 31.0, 1.0),
nir_imm_ivec4(b, 3, 3, 3, 7));
}
static nir_ssa_def *
pan_unpack_unorm_5551(nir_builder *b, nir_ssa_def *v)
{
return pan_unpack_unorm_small(b, v,
nir_imm_vec4_16(b, 1.0 / 31.0, 1.0 / 31.0, 1.0 / 31.0, 1.0),
nir_imm_ivec4(b, 3, 3, 3, 7));
}
static nir_ssa_def *
pan_pack_unorm_565(nir_builder *b, nir_ssa_def *v)
{
return pan_pack_unorm_small(b, v,
nir_imm_vec4_16(b, 31.0, 63.0, 31.0, 0.0),
nir_imm_ivec4(b, 3, 2, 3, 0));
}
static nir_ssa_def *
pan_unpack_unorm_565(nir_builder *b, nir_ssa_def *v)
{
return pan_unpack_unorm_small(b, v,
nir_imm_vec4_16(b, 1.0 / 31.0, 1.0 / 63.0, 1.0 / 31.0, 0.0),
nir_imm_ivec4(b, 3, 2, 3, 0));
}
/* Generic dispatches for un/pack regardless of format */
static bool
@ -347,6 +381,15 @@ pan_unpack(nir_builder *b,
}
}
switch (desc->format) {
case PIPE_FORMAT_B5G5R5A1_UNORM:
return pan_unpack_unorm_5551(b, packed);
case PIPE_FORMAT_B5G6R5_UNORM:
return pan_unpack_unorm_565(b, packed);
default:
break;
}
fprintf(stderr, "%s\n", desc->name);
unreachable("Unknown format");
}
@ -381,6 +424,15 @@ pan_pack(nir_builder *b,
}
}
switch (desc->format) {
case PIPE_FORMAT_B5G5R5A1_UNORM:
return pan_pack_unorm_5551(b, unpacked);
case PIPE_FORMAT_B5G6R5_UNORM:
return pan_pack_unorm_565(b, unpacked);
default:
break;
}
fprintf(stderr, "%s\n", desc->name);
unreachable("Unknown format");
}