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/* $Id$ */
/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file 32bpp_ssse3.hpp SSSE3 32 bpp blitter. */
#ifndef BLITTER_32BPP_SSSE3_HPP
#define BLITTER_32BPP_SSSE3_HPP
#ifdef WITH_SSE
#include "32bpp_sse2.hpp"
#include "tmmintrin.h"
/* Alpha blend 2 pixels. */
#undef ALPHA_BLEND_2
#define ALPHA_BLEND_2(m_pack_mask) { \
__m128i srcAB = _mm_unpacklo_epi8(srcABCD, _mm_setzero_si128()); /* PUNPCKLBW, expand each uint8 into uint16 */ \
__m128i dstAB = _mm_unpacklo_epi8(dstABCD, _mm_setzero_si128()); \
\
__m128i alphaAB = _mm_cmpgt_epi16(srcAB, _mm_setzero_si128()); /* PCMPGTW, if (alpha > 0) a++; */ \
alphaAB = _mm_srli_epi16(alphaAB, 15); \
alphaAB = _mm_add_epi16(alphaAB, srcAB); \
alphaAB = _mm_shuffle_epi8(alphaAB, a_cm); /* PSHUFB, put alpha in front of each rgb */ \
\
srcAB = _mm_sub_epi16(srcAB, dstAB); /* PSUBW, (r - Cr) */ \
srcAB = _mm_mullo_epi16(srcAB, alphaAB); /* PMULLW, a*(r - Cr) */ \
srcAB = _mm_srli_epi16(srcAB, 8); /* PSRLW, a*(r - Cr)/256 */ \
srcAB = _mm_add_epi16(srcAB, dstAB); /* PADDW, a*(r - Cr)/256 + Cr */ \
srcABCD = _mm_shuffle_epi8(srcAB, m_pack_mask); /* PSHUFB, pack 2 Colour (without saturation) */ \
}
/* Adjust brightness of 2 pixels. */
#define ADJUST_BRIGHTNESS_2(colourX2, brightnessX2) \
/* The following dataflow differs from the one of AdjustBrightness() only for alpha.
* In order to keep alpha in colAB, insert a 1 in a unused brightness byte (a*1->a).
* OK, not a 1 but DEFAULT_BRIGHTNESS to compensate the div.
*/ \
brightnessX2 &= 0xFF00FF00; \
brightnessX2 += DEFAULT_BRIGHTNESS; \
\
__m128i zero = _mm_setzero_si128(); \
__m128i colAB = _mm_unpacklo_epi8(colourX2, zero); \
\
__m128i briAB; \
INSR64(brightnessX2, briAB, 0); \
briAB = _mm_shuffle_epi8(briAB, briAB_cm); /* DEFAULT_BRIGHTNESS in 0, 0x00 in 2. */ \
colAB = _mm_mullo_epi16(colAB, briAB); \
__m128i colAB_ob = _mm_srli_epi16(colAB, 8+7); \
colAB = _mm_srli_epi16(colAB, 7); \
\
/* Sum overbright.
* Maximum for each rgb is 508 => 9 bits. The highest bit tells if there is overbright.
* -255 is changed in -256 so we just have to take the 8 lower bits into account.
*/ \
colAB = _mm_and_si128(colAB, div_cleaner); \
colAB_ob = _mm_and_si128(colAB_ob, ob_check); \
colAB_ob = _mm_mullo_epi16(colAB_ob, ob_mask); \
colAB_ob = _mm_and_si128(colAB_ob, colAB); \
__m128i obAB = _mm_hadd_epi16(_mm_hadd_epi16(colAB_ob, zero), zero); \
\
obAB = _mm_srli_epi16(obAB, 1); /* Reduce overbright strength. */ \
obAB = _mm_shuffle_epi8(obAB, ob_cm); \
__m128i retAB = ob_mask; /* ob_mask is equal to white. */ \
retAB = _mm_subs_epu16(retAB, colAB); /* (255 - rgb) */ \
retAB = _mm_mullo_epi16(retAB, obAB); /* ob*(255 - rgb) */ \
retAB = _mm_srli_epi16(retAB, 8); /* ob*(255 - rgb)/256 */ \
retAB = _mm_add_epi16(retAB, colAB); /* ob*(255 - rgb)/256 + rgb */ \
\
colourX2 = _mm_packus_epi16(retAB, retAB);
/** The SSSE3 32 bpp blitter (without palette animation). */
class Blitter_32bppSSSE3 : public Blitter_32bppSSE2 {
public:
/* virtual */ void Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom);
template <BlitterMode mode, ReadMode read_mode, BlockType bt_last>
void Draw(const Blitter::BlitterParams *bp, ZoomLevel zoom);
/* virtual */ const char *GetName() { return "32bpp-ssse3"; }
};
/** Factory for the SSSE3 32 bpp blitter (without palette animation). */
class FBlitter_32bppSSSE3: public BlitterFactory {
public:
FBlitter_32bppSSSE3() : BlitterFactory("32bpp-ssse3", "32bpp SSSE3 Blitter (no palette animation)", HasCPUIDFlag(1, 2, 9)) {}
/* virtual */ Blitter *CreateInstance() { return new Blitter_32bppSSSE3(); }
};
#endif /* WITH_SSE */
#endif /* BLITTER_32BPP_SSSE3_HPP */
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