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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_sse2.hpp SSE2 32 bpp blitter. */
#ifndef BLITTER_32BPP_SSE2_HPP
#define BLITTER_32BPP_SSE2_HPP
#ifdef WITH_SSE
#include "32bpp_simple.hpp"
#include "emmintrin.h"
#define META_LENGTH 2 ///< Number of uint32 inserted before each line of pixels in a sprite.
#define MARGIN_NORMAL_THRESHOLD (zoom == ZOOM_LVL_OUT_32X ? 8 : 4) ///< Minimum width to use margins with BM_NORMAL.
#define MARGIN_REMAP_THRESHOLD 4 ///< Minimum width to use margins with BM_COLOUR_REMAP.
#ifdef _MSC_VER
#define ALIGN(n) __declspec(align(n))
#else
#define ALIGN(n) __attribute__ ((aligned (n)))
#endif
typedef union ALIGN(16) um128i {
__m128i m128i;
uint8 m128i_u8[16];
uint16 m128i_u16[8];
uint32 m128i_u32[4];
uint64 m128i_u64[2];
} um128i;
#define CLEAR_HIGH_BYTE_MASK _mm_setr_epi8(-1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0)
#define ALPHA_CONTROL_MASK _mm_setr_epi8( 6, 7, 6, 7, 6, 7, -1, -1, 14, 15, 14, 15, 14, 15, -1, -1)
#define PACK_LOW_CONTROL_MASK _mm_setr_epi8( 0, 2, 4, -1, 8, 10, 12, -1, -1, -1, -1, -1, -1, -1, -1, -1)
#define PACK_HIGH_CONTROL_MASK _mm_setr_epi8(-1, -1, -1, -1, -1, -1, -1, -1, 0, 2, 4, -1, 8, 10, 12, -1)
#define BRIGHTNESS_LOW_CONTROL_MASK _mm_setr_epi8( 1, 2, 1, 2, 1, 2, 0, 2, 3, 2, 3, 2, 3, 2, 0, 2)
#define BRIGHTNESS_DIV_CLEANER _mm_setr_epi8(-1, 1, -1, 1, -1, 1, -1, 0, -1, 1, -1, 1, -1, 1, -1, 0)
#define OVERBRIGHT_PRESENCE_MASK _mm_setr_epi8( 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0)
#define OVERBRIGHT_VALUE_MASK _mm_setr_epi8(-1, 0, -1, 0, -1, 0, 0, 0, -1, 0, -1, 0, -1, 0, 0, 0)
#define OVERBRIGHT_CONTROL_MASK _mm_setr_epi8( 0, 1, 0, 1, 0, 1, 7, 7, 2, 3, 2, 3, 2, 3, 7, 7)
#define TRANSPARENT_NOM_BASE _mm_setr_epi16(256, 256, 256, 256, 256, 256, 256, 256)
#define EXTR32(from, rank) (*(um128i*) &from).m128i_u32[rank]
#define EXTR64(from, rank) (*(um128i*) &from).m128i_u64[rank]
#define INSR32(val, into, rank) { \
(*(um128i*) &into).m128i = _mm_insert_epi16((*(um128i*) &into).m128i, val, (rank)*2); \
(*(um128i*) &into).m128i = _mm_insert_epi16((*(um128i*) &into).m128i, (val) >> 16, (rank)*2 + 1); \
}
#define INSR64(val, into, rank) (*(um128i*) &into).m128i_u64[rank] = (val)
/* Alpha blend 2 pixels. */
#define ALPHA_BLEND_2() { \
__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_shufflelo_epi16(alphaAB, 0x3F); /* PSHUFLW, put alpha1 in front of each rgb1 */ \
alphaAB = _mm_shufflehi_epi16(alphaAB, 0x3F); /* PSHUFHW, put alpha2 in front of each rgb2 */ \
\
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 */ \
srcAB = _mm_and_si128(srcAB, clear_hi); /* PAND, wipe high bytes to keep low bytes when packing */ \
srcABCD = _mm_packus_epi16(srcAB, srcAB); /* PACKUSWB, pack 2 colours (with saturation) */ \
}
/** Base methods for 32bpp SSE blitters. */
class Blitter_32bppSSE_Base {
public:
virtual ~Blitter_32bppSSE_Base() {}
struct MapValue {
uint8 m;
uint8 v;
};
assert_compile(sizeof(MapValue) == 2);
/** Helper for creating specialised functions for specific optimisations. */
enum ReadMode {
RM_WITH_SKIP, ///< Use normal code for skipping empty pixels.
RM_WITH_MARGIN, ///< Use cached number of empty pixels at begin and end of line to reduce work.
RM_NONE, ///< No specialisation.
};
/** Helper for creating specialised functions for the case where the sprite width is odd or even. */
enum BlockType {
BT_EVEN, ///< An even number of pixels in the width; no need for a special case for the last pixel.
BT_ODD, ///< An odd number of pixels in the width; special case for the last pixel.
BT_NONE, ///< No specialisation for either case.
};
/** Data stored about a (single) sprite. */
struct SpriteInfo {
uint32 sprite_offset; ///< The offset to the sprite data.
uint32 mv_offset; ///< The offset to the map value data.
uint16 sprite_line_size; ///< The size of a single line (pitch).
uint16 sprite_width; ///< The width of the sprite.
};
struct SpriteData {
SpriteInfo infos[ZOOM_LVL_COUNT];
byte data[]; ///< Data, all zoomlevels.
};
Sprite *Encode(const SpriteLoader::Sprite *sprite, AllocatorProc *allocator);
virtual Colour AdjustBrightness(Colour colour, uint8 brightness) = 0;
};
/** The SSE2 32 bpp blitter (without palette animation). */
class Blitter_32bppSSE2 : public Blitter_32bppSimple, public Blitter_32bppSSE_Base {
public:
virtual Colour AdjustBrightness(Colour colour, uint8 brightness);
static Colour ReallyAdjustBrightness(Colour colour, uint8 brightness);
/* virtual */ void Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom);
template <BlitterMode mode, Blitter_32bppSSE_Base::ReadMode read_mode, Blitter_32bppSSE_Base::BlockType bt_last>
void Draw(const Blitter::BlitterParams *bp, ZoomLevel zoom);
/* virtual */ Sprite *Encode(const SpriteLoader::Sprite *sprite, AllocatorProc *allocator) {
return Blitter_32bppSSE_Base::Encode(sprite, allocator);
}
/* virtual */ const char *GetName() { return "32bpp-sse2"; }
};
/** Factory for the SSE2 32 bpp blitter (without palette animation). */
class FBlitter_32bppSSE2 : public BlitterFactory {
public:
FBlitter_32bppSSE2() : BlitterFactory("32bpp-sse2", "32bpp SSE2 Blitter (no palette animation)", HasCPUIDFlag(1, 3, 26)) {}
/* virtual */ Blitter *CreateInstance() { return new Blitter_32bppSSE2(); }
};
#endif /* WITH_SSE */
#endif /* BLITTER_32BPP_SSE2_HPP */
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