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astc.h: Move data to cpp implementation

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Moves leftover values that are no longer used by the gpu decoder back to the cpp implementation.
This commit is contained in:
ameerj 2021-07-04 22:07:53 -04:00
parent 7cf0958b06
commit 15c0c213b1
2 changed files with 63 additions and 64 deletions
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41
src/video_core/textures/astc.h
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@ -79,47 +79,6 @@ constexpr std::array<IntegerEncodedValue, 256> MakeEncodedValues() {
constexpr std::array<IntegerEncodedValue, 256> ASTC_ENCODINGS_VALUES = MakeEncodedValues();
// Replicates low num_bits such that [(to_bit - 1):(to_bit - 1 - from_bit)]
// is the same as [(num_bits - 1):0] and repeats all the way down.
template <typename IntType>
constexpr IntType Replicate(IntType val, u32 num_bits, u32 to_bit) {
if (num_bits == 0 || to_bit == 0) {
return 0;
}
const IntType v = val & static_cast<IntType>((1 << num_bits) - 1);
IntType res = v;
u32 reslen = num_bits;
while (reslen < to_bit) {
u32 comp = 0;
if (num_bits > to_bit - reslen) {
u32 newshift = to_bit - reslen;
comp = num_bits - newshift;
num_bits = newshift;
}
res = static_cast<IntType>(res << num_bits);
res = static_cast<IntType>(res | (v >> comp));
reslen += num_bits;
}
return res;
}
constexpr std::size_t NumReplicateEntries(u32 num_bits) {
return std::size_t(1) << num_bits;
}
template <typename IntType, u32 num_bits, u32 to_bit>
constexpr auto MakeReplicateTable() {
std::array<IntType, NumReplicateEntries(num_bits)> table{};
for (IntType value = 0; value < static_cast<IntType>(std::size(table)); ++value) {
table[value] = Replicate(value, num_bits, to_bit);
}
return table;
}
constexpr auto REPLICATE_6_BIT_TO_8_TABLE = MakeReplicateTable<u32, 6, 8>();
constexpr auto REPLICATE_7_BIT_TO_8_TABLE = MakeReplicateTable<u32, 7, 8>();
constexpr auto REPLICATE_8_BIT_TO_8_TABLE = MakeReplicateTable<u32, 8, 8>();
void Decompress(std::span<const uint8_t> data, uint32_t width, uint32_t height, uint32_t depth,
uint32_t block_width, uint32_t block_height, std::span<uint8_t> output);