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panfrost: Un/pack pure 16-bit 

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 2020-05-13 13:35:20 -04:00 committed by Marge Bot
parent c31bcca48e
commit 9a6483bb47
1 changed files with 44 additions and 1 deletions
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45
src/panfrost/util/pan_lower_framebuffer.c
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@ -146,11 +146,54 @@ pan_pack_pure_32(nir_builder *b, nir_ssa_def *v)
}
static nir_ssa_def *
pan_unpack_pure_f32(nir_builder *b, nir_ssa_def *pack, unsigned num_components)
pan_unpack_pure_32(nir_builder *b, nir_ssa_def *pack, unsigned num_components)
{
return nir_channels(b, pack, (1 << num_components) - 1);
}
/* Pure x16 formats are x16 unpacked, so it's similar, but we need to pack
* upper/lower halves of course */
static nir_ssa_def *
pan_pack_pure_16(nir_builder *b, nir_ssa_def *v)
{
nir_ssa_def *replicated[4];
for (unsigned i = 0; i < 4; ++i) {
unsigned c = 2 * i;
nir_ssa_def *parts[2] = {
nir_channel(b, v, (c + 0) % v->num_components),
nir_channel(b, v, (c + 1) % v->num_components)
};
replicated[i] = nir_pack_32_2x16(b, nir_vec(b, parts, 2));
}
return nir_vec(b, replicated, 4);
}
static nir_ssa_def *
pan_unpack_pure_16(nir_builder *b, nir_ssa_def *pack, unsigned num_components)
{
nir_ssa_def *unpacked[4];
assert(num_components <= 4);
for (unsigned i = 0; i < num_components; i += 2) {
nir_ssa_def *halves =
nir_unpack_32_2x16(b, nir_channel(b, pack, i >> 1));
unpacked[i + 0] = nir_channel(b, halves, 0);
unpacked[i + 1] = nir_channel(b, halves, 1);
}
for (unsigned i = num_components; i < 4; ++i)
unpacked[i] = nir_imm_intN_t(b, 0, 16);
return nir_vec(b, unpacked, 4);
}
/* Generic dispatches for un/pack regardless of format */
static nir_ssa_def *