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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_sse4.cpp Implementation of the SSE4 32 bpp blitter. */
#ifdef WITH_SSE
#include "../stdafx.h"
#include "../zoom_func.h"
#include "../settings_type.h"
#include "32bpp_sse4.hpp"
/** Instantiation of the SSE4 32bpp blitter factory. */
static FBlitter_32bppSSE4 iFBlitter_32bppSSE4;
/**
* Draws a sprite to a (screen) buffer. It is templated to allow faster operation.
*
* @tparam mode blitter mode
* @param bp further blitting parameters
* @param zoom zoom level at which we are drawing
*/
IGNORE_UNINITIALIZED_WARNING_START
template <BlitterMode mode, Blitter_32bppSSE2::ReadMode read_mode, Blitter_32bppSSE2::BlockType bt_last>
inline void Blitter_32bppSSE4::Draw(const Blitter::BlitterParams *bp, ZoomLevel zoom)
{
const byte * const remap = bp->remap;
Colour *dst_line = (Colour *) bp->dst + bp->top * bp->pitch + bp->left;
int effective_width = bp->width;
/* Find where to start reading in the source sprite. */
const SpriteData * const sd = (const SpriteData *) bp->sprite;
const SpriteInfo * const si = &sd->infos[zoom];
const MapValue *src_mv_line = (const MapValue *) &sd->data[si->mv_offset] + bp->skip_top * si->sprite_width;
const Colour *src_rgba_line = (const Colour *) ((const byte *) &sd->data[si->sprite_offset] + bp->skip_top * si->sprite_line_size);
if (read_mode != RM_WITH_MARGIN) {
src_rgba_line += bp->skip_left;
src_mv_line += bp->skip_left;
}
const MapValue *src_mv = src_mv_line;
/* Load these variables into register before loop. */
const __m128i a_cm = ALPHA_CONTROL_MASK;
const __m128i pack_low_cm = PACK_LOW_CONTROL_MASK;
const __m128i tr_nom_base = TRANSPARENT_NOM_BASE;
for (int y = bp->height; y != 0; y--) {
Colour *dst = dst_line;
const Colour *src = src_rgba_line + META_LENGTH;
if (mode == BM_COLOUR_REMAP) src_mv = src_mv_line;
if (read_mode == RM_WITH_MARGIN) {
assert(bt_last == BT_NONE); // or you must ensure block type is preserved
src += src_rgba_line[0].data;
dst += src_rgba_line[0].data;
if (mode == BM_COLOUR_REMAP) src_mv += src_rgba_line[0].data;
const int width_diff = si->sprite_width - bp->width;
effective_width = bp->width - (int) src_rgba_line[0].data;
const int delta_diff = (int) src_rgba_line[1].data - width_diff;
const int new_width = effective_width - delta_diff;
effective_width = delta_diff > 0 ? new_width : effective_width;
if (effective_width <= 0) goto next_line;
}
switch (mode) {
default:
for (uint x = (uint) effective_width / 2; x > 0; x--) {
__m128i srcABCD = _mm_loadl_epi64((const __m128i*) src);
__m128i dstABCD = _mm_loadl_epi64((__m128i*) dst);
_mm_storel_epi64((__m128i*) dst, AlphaBlendTwoPixels(srcABCD, dstABCD, a_cm, pack_low_cm));
src += 2;
dst += 2;
}
if ((bt_last == BT_NONE && effective_width & 1) || bt_last == BT_ODD) {
__m128i srcABCD = _mm_cvtsi32_si128(src->data);
__m128i dstABCD = _mm_cvtsi32_si128(dst->data);
dst->data = _mm_cvtsi128_si32(AlphaBlendTwoPixels(srcABCD, dstABCD, a_cm, pack_low_cm));
}
break;
case BM_COLOUR_REMAP:
for (uint x = (uint) effective_width / 2; x > 0; x--) {
__m128i srcABCD = _mm_loadl_epi64((const __m128i*) src);
__m128i dstABCD = _mm_loadl_epi64((__m128i*) dst);
uint32 mvX2 = *((uint32 *) const_cast<MapValue *>(src_mv));
/* Remap colours. */
if (mvX2 & 0x00FF00FF) {
#define CMOV_REMAP(m_colour, m_src, m_m) \
/* Written so the compiler uses CMOV. */ \
Colour m_colour = 0; \
{ \
const Colour srcm = (Colour) (m_src); \
const uint m = (byte) (m_m); \
const uint r = remap[m]; \
const Colour cmap = (this->LookupColourInPalette(r).data & 0x00FFFFFF) | (srcm.data & 0xFF000000); \
m_colour = r == 0 ? m_colour : cmap; \
m_colour = m != 0 ? m_colour : srcm; \
}
#ifdef _SQ64
uint64 srcs = _mm_cvtsi128_si64(srcABCD);
uint64 remapped_src = 0;
CMOV_REMAP(c0, srcs, mvX2);
remapped_src = c0.data;
CMOV_REMAP(c1, srcs >> 32, mvX2 >> 16);
remapped_src |= (uint64) c1.data << 32;
srcABCD = _mm_cvtsi64_si128(remapped_src);
#else
Colour remapped_src[2];
CMOV_REMAP(c0, _mm_cvtsi128_si32(srcABCD), mvX2);
remapped_src[0] = c0.data;
CMOV_REMAP(c1, src[1], mvX2 >> 16);
remapped_src[1] = c1.data;
srcABCD = _mm_loadl_epi64((__m128i*) &remapped_src);
#endif
if ((mvX2 & 0xFF00FF00) != 0x80008000) srcABCD = AdjustBrightnessOfTwoPixels(srcABCD, mvX2);
}
/* Blend colours. */
_mm_storel_epi64((__m128i *) dst, AlphaBlendTwoPixels(srcABCD, dstABCD, a_cm, pack_low_cm));
dst += 2;
src += 2;
src_mv += 2;
}
if ((bt_last == BT_NONE && effective_width & 1) || bt_last == BT_ODD) {
/* In case the m-channel is zero, do not remap this pixel in any way. */
__m128i srcABCD;
if (src_mv->m) {
const uint r = remap[src_mv->m];
if (r != 0) {
Colour remapped_colour = AdjustBrightneSSE(this->LookupColourInPalette(r), src_mv->v);
if (src->a == 255) {
*dst = remapped_colour;
} else {
remapped_colour.a = src->a;
srcABCD = _mm_cvtsi32_si128(remapped_colour.data);
goto bmcr_alpha_blend_single;
}
}
} else {
srcABCD = _mm_cvtsi32_si128(src->data);
if (src->a < 255) {
bmcr_alpha_blend_single:
__m128i dstABCD = _mm_cvtsi32_si128(dst->data);
srcABCD = AlphaBlendTwoPixels(srcABCD, dstABCD, a_cm, pack_low_cm);
}
dst->data = _mm_cvtsi128_si32(srcABCD);
}
}
break;
case BM_TRANSPARENT:
/* Make the current colour a bit more black, so it looks like this image is transparent. */
for (uint x = (uint) bp->width / 2; x > 0; x--) {
__m128i srcABCD = _mm_loadl_epi64((const __m128i*) src);
__m128i dstABCD = _mm_loadl_epi64((__m128i*) dst);
_mm_storel_epi64((__m128i *) dst, DarkenTwoPixels(srcABCD, dstABCD, a_cm, tr_nom_base));
src += 2;
dst += 2;
}
if ((bt_last == BT_NONE && bp->width & 1) || bt_last == BT_ODD) {
__m128i srcABCD = _mm_cvtsi32_si128(src->data);
__m128i dstABCD = _mm_cvtsi32_si128(dst->data);
dst->data = _mm_cvtsi128_si32(DarkenTwoPixels(srcABCD, dstABCD, a_cm, tr_nom_base));
}
break;
}
next_line:
if (mode == BM_COLOUR_REMAP) src_mv_line += si->sprite_width;
src_rgba_line = (const Colour*) ((const byte*) src_rgba_line + si->sprite_line_size);
dst_line += bp->pitch;
}
}
IGNORE_UNINITIALIZED_WARNING_STOP
/**
* Draws a sprite to a (screen) buffer. Calls adequate templated function.
*
* @param bp further blitting parameters
* @param mode blitter mode
* @param zoom zoom level at which we are drawing
*/
void Blitter_32bppSSE4::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom)
{
switch (mode) {
case BM_NORMAL: {
if (bp->skip_left != 0 || bp->width <= MARGIN_NORMAL_THRESHOLD) {
const BlockType bt_last = (BlockType) (bp->width & 1);
switch (bt_last) {
case BT_EVEN: Draw<BM_NORMAL, RM_WITH_SKIP, BT_EVEN>(bp, zoom); return;
case BT_ODD: Draw<BM_NORMAL, RM_WITH_SKIP, BT_ODD>(bp, zoom); return;
default: NOT_REACHED();
}
} else {
Draw<BM_NORMAL, RM_WITH_MARGIN, BT_NONE>(bp, zoom); return;
}
break;
}
case BM_COLOUR_REMAP:
if (bp->skip_left != 0 || bp->width <= MARGIN_REMAP_THRESHOLD) {
Draw<BM_COLOUR_REMAP, RM_WITH_SKIP, BT_NONE>(bp, zoom); return;
} else {
Draw<BM_COLOUR_REMAP, RM_WITH_MARGIN, BT_NONE>(bp, zoom); return;
}
case BM_TRANSPARENT: Draw<BM_TRANSPARENT, RM_NONE, BT_NONE>(bp, zoom); return;
default: NOT_REACHED();
}
}
#endif /* WITH_SSE */
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