panfrost: Un/pack RGB10_A2_UINT
It's different. Because forget me. Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5265>
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@ -387,6 +387,35 @@ pan_unpack_unorm_1010102(nir_builder *b, nir_ssa_def *packed)
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return nir_f2f16(b, nir_fmul(b, nir_u2f32(b, nir_vec(b, chans, 4)), scale));
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}
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/* On the other hand, the pure int RGB10_A2 is identical to the spec */
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static nir_ssa_def *
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pan_pack_uint_1010102(nir_builder *b, nir_ssa_def *v)
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{
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nir_ssa_def *shift = nir_ishl(b, nir_u2u32(b, v),
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nir_imm_ivec4(b, 0, 10, 20, 30));
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nir_ssa_def *p = nir_ior(b,
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nir_ior(b, nir_channel(b, shift, 0), nir_channel(b, shift, 1)),
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nir_ior(b, nir_channel(b, shift, 2), nir_channel(b, shift, 3)));
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return pan_replicate_4(b, p);
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}
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static nir_ssa_def *
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pan_unpack_uint_1010102(nir_builder *b, nir_ssa_def *packed)
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{
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nir_ssa_def *chan = nir_channel(b, packed, 0);
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nir_ssa_def *shift = nir_ushr(b, pan_replicate_4(b, chan),
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nir_imm_ivec4(b, 0, 10, 20, 30));
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nir_ssa_def *mask = nir_iand(b, shift,
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nir_imm_ivec4(b, 0x3ff, 0x3ff, 0x3ff, 0x3));
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return nir_u2u16(b, mask);
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}
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/* Generic dispatches for un/pack regardless of format */
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static bool
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@ -442,6 +471,8 @@ pan_unpack(nir_builder *b,
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return pan_unpack_unorm_565(b, packed);
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case PIPE_FORMAT_R10G10B10A2_UNORM:
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return pan_unpack_unorm_1010102(b, packed);
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case PIPE_FORMAT_R10G10B10A2_UINT:
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return pan_unpack_uint_1010102(b, packed);
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default:
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break;
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}
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@ -487,6 +518,8 @@ pan_pack(nir_builder *b,
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return pan_pack_unorm_565(b, unpacked);
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case PIPE_FORMAT_R10G10B10A2_UNORM:
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return pan_pack_unorm_1010102(b, unpacked);
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case PIPE_FORMAT_R10G10B10A2_UINT:
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return pan_pack_uint_1010102(b, unpacked);
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default:
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break;
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}
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