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Update astcenc to the upstream 5.3.0 release

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This is mostly a maintenance update that brings the compressor inline
with the recently published Khronos Data Format Specification 1.4
release which clarified some ambiguity in the specification. This update
also gives minor codec optimizations, bug fixes, and image quality
improvements.

The biggest improvement for Godot is that builds using MSVC cl.exe will
now correctly default to the SSE2-optimized backend rather than the
reference C backend. This makes compression more than 3 times faster.
Builds using other compilers (GCC, LLVM/Clang) were not impacted by the
underlying issue, and see no performance uplift.
This commit is contained in:
Peter Harris
2025-03-21 16:02:50 -07:00
parent 2303ce843a
commit 75ce42d463
24 changed files with 2068 additions and 813 deletions
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31
thirdparty/astcenc/astcenc_decompress_symbolic.cpp vendored
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@ -98,19 +98,14 @@ void unpack_weights(
if (!is_dual_plane)
{
// Build full 64-entry weight lookup table
vint4 tab0 = vint4::load(scb.weights + 0);
vint4 tab1 = vint4::load(scb.weights + 16);
vint4 tab2 = vint4::load(scb.weights + 32);
vint4 tab3 = vint4::load(scb.weights + 48);
vint tab0p, tab1p, tab2p, tab3p;
vtable_prepare(tab0, tab1, tab2, tab3, tab0p, tab1p, tab2p, tab3p);
vtable_64x8 table;
vtable_prepare(table, scb.weights);
for (unsigned int i = 0; i < bsd.texel_count; i += ASTCENC_SIMD_WIDTH)
{
vint summed_value(8);
vint weight_count(di.texel_weight_count + i);
int max_weight_count = hmax(weight_count).lane<0>();
int max_weight_count = hmax_s(weight_count);
promise(max_weight_count > 0);
for (int j = 0; j < max_weight_count; j++)
@ -118,7 +113,7 @@ void unpack_weights(
vint texel_weights(di.texel_weights_tr[j] + i);
vint texel_weights_int(di.texel_weight_contribs_int_tr[j] + i);
summed_value += vtable_8bt_32bi(tab0p, tab1p, tab2p, tab3p, texel_weights) * texel_weights_int;
summed_value += vtable_lookup_32bit(table, texel_weights) * texel_weights_int;
}
store(lsr<4>(summed_value), weights_plane1 + i);
@ -128,16 +123,12 @@ void unpack_weights(
{
// Build a 32-entry weight lookup table per plane
// Plane 1
vint4 tab0_plane1 = vint4::load(scb.weights + 0);
vint4 tab1_plane1 = vint4::load(scb.weights + 16);
vint tab0_plane1p, tab1_plane1p;
vtable_prepare(tab0_plane1, tab1_plane1, tab0_plane1p, tab1_plane1p);
vtable_32x8 tab_plane1;
vtable_prepare(tab_plane1, scb.weights);
// Plane 2
vint4 tab0_plane2 = vint4::load(scb.weights + 32);
vint4 tab1_plane2 = vint4::load(scb.weights + 48);
vint tab0_plane2p, tab1_plane2p;
vtable_prepare(tab0_plane2, tab1_plane2, tab0_plane2p, tab1_plane2p);
vtable_32x8 tab_plane2;
vtable_prepare(tab_plane2, scb.weights + 32);
for (unsigned int i = 0; i < bsd.texel_count; i += ASTCENC_SIMD_WIDTH)
{
@ -145,7 +136,7 @@ void unpack_weights(
vint sum_plane2(8);
vint weight_count(di.texel_weight_count + i);
int max_weight_count = hmax(weight_count).lane<0>();
int max_weight_count = hmax_s(weight_count);
promise(max_weight_count > 0);
for (int j = 0; j < max_weight_count; j++)
@ -153,8 +144,8 @@ void unpack_weights(
vint texel_weights(di.texel_weights_tr[j] + i);
vint texel_weights_int(di.texel_weight_contribs_int_tr[j] + i);
sum_plane1 += vtable_8bt_32bi(tab0_plane1p, tab1_plane1p, texel_weights) * texel_weights_int;
sum_plane2 += vtable_8bt_32bi(tab0_plane2p, tab1_plane2p, texel_weights) * texel_weights_int;
sum_plane1 += vtable_lookup_32bit(tab_plane1, texel_weights) * texel_weights_int;
sum_plane2 += vtable_lookup_32bit(tab_plane2, texel_weights) * texel_weights_int;
}
store(lsr<4>(sum_plane1), weights_plane1 + i);