Common/Hash: use zlib-ng for adler32. small cleanups.
This commit is contained in:
Shawn Hoffman
parent
fb45ed3981
commit
17c554c165
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@ -22,94 +22,28 @@
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namespace Common
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{
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static u64 (*ptrHashFunction)(const u8* src, u32 len, u32 samples) = nullptr;
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// uint32_t
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// WARNING - may read one more byte!
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// Implementation from Wikipedia.
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u32 HashFletcher(const u8* data_u8, size_t length)
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{
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const u16* data = (const u16*)data_u8; /* Pointer to the data to be summed */
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size_t len = (length + 1) / 2; /* Length in 16-bit words */
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u32 sum1 = 0xffff, sum2 = 0xffff;
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while (len)
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{
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size_t tlen = len > 360 ? 360 : len;
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len -= tlen;
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do
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{
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sum1 += *data++;
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sum2 += sum1;
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} while (--tlen);
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sum1 = (sum1 & 0xffff) + (sum1 >> 16);
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sum2 = (sum2 & 0xffff) + (sum2 >> 16);
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}
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// Second reduction step to reduce sums to 16 bits
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sum1 = (sum1 & 0xffff) + (sum1 >> 16);
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sum2 = (sum2 & 0xffff) + (sum2 >> 16);
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return (sum2 << 16 | sum1);
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}
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// Implementation from Wikipedia
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// Slightly slower than Fletcher above, but slightly more reliable.
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// data: Pointer to the data to be summed; len is in bytes
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u32 HashAdler32(const u8* data, size_t len)
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{
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static const u32 MOD_ADLER = 65521;
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u32 a = 1, b = 0;
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while (len)
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{
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size_t tlen = len > 5550 ? 5550 : len;
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len -= tlen;
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do
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{
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a += *data++;
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b += a;
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} while (--tlen);
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a = (a & 0xffff) + (a >> 16) * (65536 - MOD_ADLER);
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b = (b & 0xffff) + (b >> 16) * (65536 - MOD_ADLER);
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}
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// It can be shown that a <= 0x1013a here, so a single subtract will do.
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if (a >= MOD_ADLER)
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{
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a -= MOD_ADLER;
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}
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// It can be shown that b can reach 0xfff87 here.
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b = (b & 0xffff) + (b >> 16) * (65536 - MOD_ADLER);
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if (b >= MOD_ADLER)
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{
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b -= MOD_ADLER;
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}
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return ((b << 16) | a);
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// Use fast implementation from zlib-ng
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return adler32_z(1, data, len);
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}
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// Stupid hash - but can't go back now :)
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// Don't use for new things. At least it's reasonably fast.
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u32 HashEctor(const u8* ptr, size_t length)
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u32 HashEctor(const u8* data, size_t len)
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{
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u32 crc = 0;
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for (size_t i = 0; i < length; i++)
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for (size_t i = 0; i < len; i++)
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{
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crc ^= ptr[i];
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crc ^= data[i];
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crc = (crc << 3) | (crc >> 29);
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}
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return (crc);
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return crc;
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}
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#if _ARCH_64
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#ifdef _ARCH_64
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//-----------------------------------------------------------------------------
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// Block read - if your platform needs to do endian-swapping or can only
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@ -250,133 +184,8 @@ static u64 GetMurmurHash3(const u8* src, u32 len, u32 samples)
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return h1;
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}
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// CRC32 hash using the SSE4.2 instruction
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#if defined(_M_X86_64)
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FUNCTION_TARGET_SSE42
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static u64 GetCRC32(const u8* src, u32 len, u32 samples)
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{
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u64 h[4] = {len, 0, 0, 0};
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u32 Step = (len / 8);
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const u64* data = (const u64*)src;
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const u64* end = data + Step;
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if (samples == 0)
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samples = std::max(Step, 1u);
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Step = Step / samples;
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if (Step < 1)
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Step = 1;
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while (data < end - Step * 3)
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{
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h[0] = _mm_crc32_u64(h[0], data[Step * 0]);
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h[1] = _mm_crc32_u64(h[1], data[Step * 1]);
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h[2] = _mm_crc32_u64(h[2], data[Step * 2]);
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h[3] = _mm_crc32_u64(h[3], data[Step * 3]);
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data += Step * 4;
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}
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if (data < end - Step * 0)
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h[0] = _mm_crc32_u64(h[0], data[Step * 0]);
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if (data < end - Step * 1)
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h[1] = _mm_crc32_u64(h[1], data[Step * 1]);
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if (data < end - Step * 2)
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h[2] = _mm_crc32_u64(h[2], data[Step * 2]);
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if (len & 7)
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{
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u64 temp = 0;
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memcpy(&temp, end, len & 7);
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h[0] = _mm_crc32_u64(h[0], temp);
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}
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// FIXME: is there a better way to combine these partial hashes?
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return h[0] + (h[1] << 10) + (h[2] << 21) + (h[3] << 32);
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}
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#elif defined(_M_ARM_64)
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static u64 GetCRC32(const u8* src, u32 len, u32 samples)
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{
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u64 h[4] = {len, 0, 0, 0};
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u32 Step = (len / 8);
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const u64* data = (const u64*)src;
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const u64* end = data + Step;
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if (samples == 0)
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samples = std::max(Step, 1u);
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Step = Step / samples;
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if (Step < 1)
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Step = 1;
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while (data < end - Step * 3)
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{
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h[0] = __crc32d(h[0], data[Step * 0]);
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h[1] = __crc32d(h[1], data[Step * 1]);
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h[2] = __crc32d(h[2], data[Step * 2]);
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h[3] = __crc32d(h[3], data[Step * 3]);
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data += Step * 4;
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}
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if (data < end - Step * 0)
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h[0] = __crc32d(h[0], data[Step * 0]);
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if (data < end - Step * 1)
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h[1] = __crc32d(h[1], data[Step * 1]);
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if (data < end - Step * 2)
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h[2] = __crc32d(h[2], data[Step * 2]);
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if (len & 7)
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{
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u64 temp = 0;
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memcpy(&temp, end, len & 7);
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h[0] = __crc32d(h[0], temp);
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}
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// FIXME: is there a better way to combine these partial hashes?
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return h[0] + (h[1] << 10) + (h[2] << 21) + (h[3] << 32);
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}
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#else
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static u64 GetCRC32(const u8* src, u32 len, u32 samples)
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{
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return 0;
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}
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#endif
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#else
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// CRC32 hash using the SSE4.2 instruction
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#if defined(_M_X86)
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FUNCTION_TARGET_SSE42
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static u64 GetCRC32(const u8* src, u32 len, u32 samples)
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{
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u32 h = len;
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u32 Step = (len / 4);
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const u32* data = (const u32*)src;
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const u32* end = data + Step;
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if (samples == 0)
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samples = std::max(Step, 1u);
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Step = Step / samples;
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if (Step < 1)
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Step = 1;
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while (data < end)
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{
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h = _mm_crc32_u32(h, data[0]);
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data += Step;
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}
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const u8* data2 = (const u8*)end;
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return (u64)_mm_crc32_u32(h, u32(data2[0]));
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}
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#else
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static u64 GetCRC32(const u8* src, u32 len, u32 samples)
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{
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return 0;
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}
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#endif
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//-----------------------------------------------------------------------------
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// Block read - if your platform needs to do endian-swapping or can only
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// handle aligned reads, do the conversion here
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@ -504,55 +313,159 @@ static u64 GetMurmurHash3(const u8* src, u32 len, u32 samples)
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return *((u64*)&out);
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}
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#endif
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#if defined(_M_X86_64)
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FUNCTION_TARGET_SSE42
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static u64 GetHash64_SSE42_CRC32(const u8* src, u32 len, u32 samples)
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{
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u64 h[4] = {len, 0, 0, 0};
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u32 Step = (len / 8);
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const u64* data = (const u64*)src;
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const u64* end = data + Step;
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if (samples == 0)
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samples = std::max(Step, 1u);
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Step = Step / samples;
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if (Step < 1)
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Step = 1;
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while (data < end - Step * 3)
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{
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h[0] = _mm_crc32_u64(h[0], data[Step * 0]);
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h[1] = _mm_crc32_u64(h[1], data[Step * 1]);
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h[2] = _mm_crc32_u64(h[2], data[Step * 2]);
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h[3] = _mm_crc32_u64(h[3], data[Step * 3]);
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data += Step * 4;
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}
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if (data < end - Step * 0)
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h[0] = _mm_crc32_u64(h[0], data[Step * 0]);
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if (data < end - Step * 1)
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h[1] = _mm_crc32_u64(h[1], data[Step * 1]);
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if (data < end - Step * 2)
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h[2] = _mm_crc32_u64(h[2], data[Step * 2]);
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if (len & 7)
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{
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u64 temp = 0;
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memcpy(&temp, end, len & 7);
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h[0] = _mm_crc32_u64(h[0], temp);
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}
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// FIXME: is there a better way to combine these partial hashes?
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return h[0] + (h[1] << 10) + (h[2] << 21) + (h[3] << 32);
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}
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#elif defined(_M_X86)
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FUNCTION_TARGET_SSE42
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static u64 GetHash64_SSE42_CRC32(const u8* src, u32 len, u32 samples)
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{
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u32 h = len;
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u32 Step = (len / 4);
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const u32* data = (const u32*)src;
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const u32* end = data + Step;
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if (samples == 0)
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samples = std::max(Step, 1u);
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Step = Step / samples;
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if (Step < 1)
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Step = 1;
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while (data < end)
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{
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h = _mm_crc32_u32(h, data[0]);
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data += Step;
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}
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const u8* data2 = (const u8*)end;
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return (u64)_mm_crc32_u32(h, u32(data2[0]));
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}
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#elif defined(_M_ARM_64)
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static u64 GetHash64_ARMv8_CRC32(const u8* src, u32 len, u32 samples)
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{
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u64 h[4] = {len, 0, 0, 0};
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u32 Step = (len / 8);
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const u64* data = (const u64*)src;
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const u64* end = data + Step;
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if (samples == 0)
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samples = std::max(Step, 1u);
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Step = Step / samples;
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if (Step < 1)
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Step = 1;
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while (data < end - Step * 3)
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{
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h[0] = __crc32d(h[0], data[Step * 0]);
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h[1] = __crc32d(h[1], data[Step * 1]);
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h[2] = __crc32d(h[2], data[Step * 2]);
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h[3] = __crc32d(h[3], data[Step * 3]);
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data += Step * 4;
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}
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if (data < end - Step * 0)
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h[0] = __crc32d(h[0], data[Step * 0]);
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if (data < end - Step * 1)
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h[1] = __crc32d(h[1], data[Step * 1]);
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if (data < end - Step * 2)
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h[2] = __crc32d(h[2], data[Step * 2]);
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if (len & 7)
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{
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u64 temp = 0;
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memcpy(&temp, end, len & 7);
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h[0] = __crc32d(h[0], temp);
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}
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// FIXME: is there a better way to combine these partial hashes?
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return h[0] + (h[1] << 10) + (h[2] << 21) + (h[3] << 32);
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}
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#endif
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using TextureHashFunction = u64 (*)(const u8* src, u32 len, u32 samples);
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static u64 SetHash64Function(const u8* src, u32 len, u32 samples);
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static TextureHashFunction s_texture_hash_func = SetHash64Function;
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static u64 SetHash64Function(const u8* src, u32 len, u32 samples)
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{
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if (cpu_info.bCRC32)
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{
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#if defined(_M_X86_64) || defined(_M_X86)
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s_texture_hash_func = &GetHash64_SSE42_CRC32;
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#elif defined(_M_ARM_64)
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s_texture_hash_func = &GetHash64_ARMv8_CRC32;
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#endif
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}
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else
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{
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s_texture_hash_func = &GetMurmurHash3;
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}
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return s_texture_hash_func(src, len, samples);
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}
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u64 GetHash64(const u8* src, u32 len, u32 samples)
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{
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return ptrHashFunction(src, len, samples);
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}
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// sets the hash function used for the texture cache
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void SetHash64Function()
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{
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#if defined(_M_X86_64) || defined(_M_X86)
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if (cpu_info.bSSE4_2) // sse crc32 version
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{
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ptrHashFunction = &GetCRC32;
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}
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else
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#elif defined(_M_ARM_64)
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if (cpu_info.bCRC32)
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{
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ptrHashFunction = &GetCRC32;
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}
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else
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#endif
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{
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ptrHashFunction = &GetMurmurHash3;
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}
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}
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u32 ComputeCRC32(std::string_view data)
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{
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return ComputeCRC32(reinterpret_cast<const u8*>(data.data()), static_cast<u32>(data.size()));
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}
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u32 ComputeCRC32(const u8* ptr, u32 length)
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{
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return UpdateCRC32(StartCRC32(), ptr, length);
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return s_texture_hash_func(src, len, samples);
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}
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u32 StartCRC32()
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{
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return crc32(0L, Z_NULL, 0);
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return crc32_z(0L, Z_NULL, 0);
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}
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u32 UpdateCRC32(u32 crc, const u8* ptr, u32 length)
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u32 UpdateCRC32(u32 crc, const u8* data, size_t len)
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{
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static_assert(std::is_same_v<const u8*, const Bytef*>);
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static_assert(std::is_same_v<u32, uInt>);
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// Use zlib's crc32 implementation to compute the hash
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// crc32_z (which takes a size_t) would be better, but it isn't available on Android
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return crc32(crc, ptr, length);
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return crc32_z(crc, data, len);
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}
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u32 ComputeCRC32(const u8* data, size_t len)
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{
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return UpdateCRC32(StartCRC32(), data, len);
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}
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u32 ComputeCRC32(std::string_view data)
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{
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return ComputeCRC32(reinterpret_cast<const u8*>(data.data()), data.size());
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}
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} // namespace Common
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@ -10,14 +10,15 @@
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namespace Common
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{
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u32 HashFletcher(const u8* data_u8, size_t length); // FAST. Length & 1 == 0.
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u32 HashAdler32(const u8* data, size_t len); // Fairly accurate, slightly slower
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u32 HashEctor(const u8* ptr, size_t length); // JUNK. DO NOT USE FOR NEW THINGS
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u64 GetHash64(const u8* src, u32 len, u32 samples);
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void SetHash64Function();
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u32 HashAdler32(const u8* data, size_t len);
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// JUNK. DO NOT USE FOR NEW THINGS
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u32 HashEctor(const u8* data, size_t len);
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// Specialized hash function used for the texture cache
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u64 GetHash64(const u8* src, u32 len, u32 samples);
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u32 ComputeCRC32(std::string_view data);
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u32 ComputeCRC32(const u8* ptr, u32 length);
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u32 StartCRC32();
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u32 UpdateCRC32(u32 crc, const u8* ptr, u32 length);
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u32 UpdateCRC32(u32 crc, const u8* data, size_t len);
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u32 ComputeCRC32(const u8* data, size_t len);
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u32 ComputeCRC32(std::string_view data);
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} // namespace Common
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@ -1175,8 +1175,8 @@ void VolumeVerifier::Process()
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if (m_hashes_to_calculate.crc32)
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{
|
||||
m_crc32_future = std::async(std::launch::async, [this, byte_increment] {
|
||||
m_crc32_context =
|
||||
Common::UpdateCRC32(m_crc32_context, m_data.data(), static_cast<u32>(byte_increment));
|
||||
m_crc32_context = Common::UpdateCRC32(m_crc32_context, m_data.data(),
|
||||
static_cast<size_t>(byte_increment));
|
||||
});
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -7,7 +7,6 @@
|
|||
#include <functional> // for hash
|
||||
|
||||
#include "Common/CommonTypes.h"
|
||||
#include "Common/Hash.h"
|
||||
#include "VideoCommon/CPMemory.h"
|
||||
|
||||
// m_components
|
||||
|
|
@ -79,10 +78,37 @@ namespace std
|
|||
template <>
|
||||
struct hash<PortableVertexDeclaration>
|
||||
{
|
||||
size_t operator()(const PortableVertexDeclaration& decl) const
|
||||
// Implementation from Wikipedia.
|
||||
template <typename T>
|
||||
u32 Fletcher32(const T& data) const
|
||||
{
|
||||
return Common::HashFletcher(reinterpret_cast<const u8*>(&decl), sizeof(decl));
|
||||
static_assert(sizeof(T) % sizeof(u16) == 0);
|
||||
|
||||
auto buf = reinterpret_cast<const u16*>(&data);
|
||||
size_t len = sizeof(T) / sizeof(u16);
|
||||
u32 sum1 = 0xffff, sum2 = 0xffff;
|
||||
|
||||
while (len)
|
||||
{
|
||||
size_t tlen = len > 360 ? 360 : len;
|
||||
len -= tlen;
|
||||
|
||||
do
|
||||
{
|
||||
sum1 += *buf++;
|
||||
sum2 += sum1;
|
||||
} while (--tlen);
|
||||
|
||||
sum1 = (sum1 & 0xffff) + (sum1 >> 16);
|
||||
sum2 = (sum2 & 0xffff) + (sum2 >> 16);
|
||||
}
|
||||
|
||||
// Second reduction step to reduce sums to 16 bits
|
||||
sum1 = (sum1 & 0xffff) + (sum1 >> 16);
|
||||
sum2 = (sum2 & 0xffff) + (sum2 >> 16);
|
||||
return (sum2 << 16 | sum1);
|
||||
}
|
||||
size_t operator()(const PortableVertexDeclaration& decl) const { return Fletcher32(decl); }
|
||||
};
|
||||
} // namespace std
|
||||
|
||||
|
|
|
|||
|
|
@ -94,8 +94,6 @@ TextureCacheBase::TextureCacheBase()
|
|||
|
||||
HiresTexture::Init();
|
||||
|
||||
Common::SetHash64Function();
|
||||
|
||||
TMEM::InvalidateAll();
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue