57 lines
No EOL
1.9 KiB
C++
57 lines
No EOL
1.9 KiB
C++
// Copyright (c) 2012- PPSSPP Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#include <arm_neon.h>
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#include "GPU/Common/TextureDecoder.h"
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#ifndef ARM
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#error Should not be compiled on non-ARM.
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#endif
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static const u16 MEMORY_ALIGNED16(QuickTexHashInitial[8]) = {0x0001U, 0x0083U, 0x4309U, 0x4d9bU, 0xb651U, 0x4b73U, 0x9bd9U, 0xc00bU};
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u32 QuickTexHashNEON(const void *checkp, u32 size) {
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u32 check = 0;
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if (((intptr_t)checkp & 0xf) == 0 && (size & 0x3f) == 0) {
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uint32x4_t cursor = vdupq_n_u32(0);
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uint32x4_t cursor2 = vld1q_u32((const u32 *)QuickTexHashInitial);
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uint32x4_t update = vdupq_n_u32(0x24552455U);
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const u32 *p = (const u32 *)checkp;
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for (u32 i = 0; i < size / 16; i += 4) {
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cursor = vmlaq_u32(cursor, vld1q_u32(&p[4 * 0]), cursor2);
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cursor = veorq_u32(cursor, vld1q_u32(&p[4 * 1]));
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cursor = vaddq_u32(cursor, vld1q_u32(&p[4 * 2]));
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cursor = veorq_u32(cursor, vmulq_u32(vld1q_u32(&p[4 * 3]), cursor2));
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cursor2 = vaddq_u32(cursor2, update);
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p += 4 * 4;
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}
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cursor = vaddq_u32(cursor, cursor2);
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check = vgetq_lane_u32(cursor, 0) + vgetq_lane_u32(cursor, 1) + vgetq_lane_u32(cursor, 2) + vgetq_lane_u32(cursor, 3);
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} else {
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const u32 *p = (const u32 *)checkp;
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for (u32 i = 0; i < size / 8; ++i) {
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check += *p++;
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check ^= *p++;
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}
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}
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return check;
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} |