2014-01-02 23:12:32 +00:00
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/* $Id$ */
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/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/** @file 32bpp_sse2.cpp Implementation of the SSE2 32 bpp blitter. */
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#ifdef WITH_SSE
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#include "../stdafx.h"
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#include "../zoom_func.h"
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#include "../settings_type.h"
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#include "32bpp_sse2.hpp"
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/** Instantiation of the SSE2 32bpp blitter factory. */
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static FBlitter_32bppSSE2 iFBlitter_32bppSSE2;
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/**
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* Draws a sprite to a (screen) buffer. It is templated to allow faster operation.
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*
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* @tparam mode blitter mode
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* @param bp further blitting parameters
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* @param zoom zoom level at which we are drawing
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*/
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2014-01-03 18:43:10 +00:00
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IGNORE_UNINITIALIZED_WARNING_START
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2014-01-02 23:12:32 +00:00
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template <BlitterMode mode, Blitter_32bppSSE2::ReadMode read_mode, Blitter_32bppSSE2::BlockType bt_last>
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inline void Blitter_32bppSSE2::Draw(const Blitter::BlitterParams *bp, ZoomLevel zoom)
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{
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Colour *dst_line = (Colour *) bp->dst + bp->top * bp->pitch + bp->left;
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int effective_width = bp->width;
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/* Find where to start reading in the source sprite */
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const SpriteData * const sd = (const SpriteData *) bp->sprite;
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const SpriteInfo * const si = &sd->infos[zoom];
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const MapValue *src_mv_line = (const MapValue *) &sd->data[si->mv_offset] + bp->skip_top * si->sprite_width;
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const Colour *src_rgba_line = (const Colour *) ((const byte *) &sd->data[si->sprite_offset] + bp->skip_top * si->sprite_line_size);
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if (read_mode != RM_WITH_MARGIN) {
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src_rgba_line += bp->skip_left;
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src_mv_line += bp->skip_left;
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}
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/* Load these variables into register before loop. */
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2014-01-03 18:03:14 +00:00
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const __m128i clear_hi = CLEAR_HIGH_BYTE_MASK;
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const __m128i tr_nom_base = TRANSPARENT_NOM_BASE;
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2014-01-02 23:12:32 +00:00
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for (int y = bp->height; y != 0; y--) {
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Colour *dst = dst_line;
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const Colour *src = src_rgba_line + META_LENGTH;
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const MapValue *src_mv = src_mv_line;
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switch (mode) {
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default: {
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switch (read_mode) {
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case RM_WITH_MARGIN: {
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src += src_rgba_line[0].data;
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dst += src_rgba_line[0].data;
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const int width_diff = si->sprite_width - bp->width;
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effective_width = bp->width - (int) src_rgba_line[0].data;
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const int delta_diff = (int) src_rgba_line[1].data - width_diff;
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const int new_width = effective_width - (delta_diff & ~1);
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effective_width = delta_diff > 0 ? new_width : effective_width;
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if (effective_width <= 0) break;
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/* FALLTHROUGH */
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}
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case RM_WITH_SKIP: {
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for (uint x = (uint) effective_width / 2; x > 0; x--) {
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__m128i srcABCD = _mm_loadu_si128((const __m128i*) src);
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__m128i dstABCD = _mm_loadu_si128((__m128i*) dst);
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ALPHA_BLEND_2();
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*(uint64*) dst = EXTR64(srcABCD, 0);
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src += 2;
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dst += 2;
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}
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if (bt_last == BT_ODD) {
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__m128i srcABCD = _mm_loadu_si128((const __m128i*) src);
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__m128i dstABCD = _mm_loadu_si128((__m128i*) dst);
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ALPHA_BLEND_2();
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(*dst).data = EXTR32(srcABCD, 0);
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}
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break;
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}
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default: NOT_REACHED();
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}
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break;
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}
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case BM_COLOUR_REMAP: {
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switch (read_mode) {
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case RM_WITH_MARGIN: {
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src += src_rgba_line[0].data;
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src_mv += src_rgba_line[0].data;
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dst += src_rgba_line[0].data;
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const int width_diff = si->sprite_width - bp->width;
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effective_width = bp->width - (int) src_rgba_line[0].data;
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const int delta_diff = (int) src_rgba_line[1].data - width_diff;
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const int nd = effective_width - delta_diff;
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effective_width = delta_diff > 0 ? nd : effective_width;
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if (effective_width <= 0) break;
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/* FALLTHROUGH */
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}
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case RM_WITH_SKIP: {
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const byte *remap = bp->remap;
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for (uint x = (uint) effective_width; x != 0; x--) {
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/* In case the m-channel is zero, do not remap this pixel in any way */
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if (src_mv->m == 0) {
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if (src->a < 255) {
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__m128i srcABCD = _mm_loadu_si128((const __m128i*) src);
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__m128i dstABCD = _mm_loadu_si128((__m128i*) dst);
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ALPHA_BLEND_2();
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(*dst).data = EXTR32(srcABCD, 0);
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} else {
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*dst = src->data;
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}
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} else {
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const uint r = remap[src_mv->m];
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if (r != 0) {
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Colour remapped_colour = AdjustBrightness(this->LookupColourInPalette(r), src_mv->v);
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if (src->a < 255) {
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__m128i srcABCD;
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__m128i dstABCD = _mm_loadu_si128((__m128i*) dst);
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remapped_colour.a = src->a;
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INSR32(remapped_colour.data, srcABCD, 0);
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ALPHA_BLEND_2();
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(*dst).data = EXTR32(srcABCD, 0);
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} else
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*dst = remapped_colour;
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}
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}
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src_mv++;
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dst++;
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src++;
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}
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break;
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}
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default: NOT_REACHED();
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}
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src_mv_line += si->sprite_width;
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break;
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}
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2014-01-03 18:03:14 +00:00
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case BM_TRANSPARENT: {
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/* Make the current colour a bit more black, so it looks like this image is transparent.
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* rgb = rgb * ((256/4) * 4 - (alpha/4)) / ((256/4) * 4)
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*/
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__m128i srcABCD = _mm_loadu_si128((const __m128i*) src);
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__m128i dstABCD = _mm_loadu_si128((__m128i*) dst);
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for (uint x = (uint) bp->width / 2; x > 0; x--) {
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__m128i srcAB = _mm_unpacklo_epi8(srcABCD, _mm_setzero_si128());
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__m128i dstAB = _mm_unpacklo_epi8(dstABCD, _mm_setzero_si128());
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__m128i dstCD = _mm_unpackhi_epi8(dstABCD, _mm_setzero_si128());
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__m128i alphaAB = _mm_shufflelo_epi16(srcAB, 0x3F);
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alphaAB = _mm_shufflehi_epi16(alphaAB, 0x3F);
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alphaAB = _mm_srli_epi16(alphaAB, 2); // Reduce to 64 levels of shades so the max value fits in 16 bits.
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__m128i nom = _mm_sub_epi16(tr_nom_base, alphaAB);
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dstAB = _mm_mullo_epi16(dstAB, nom);
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dstAB = _mm_srli_epi16(dstAB, 8);
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dstAB = _mm_packus_epi16(dstAB, dstCD);
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Colour *old_dst = dst;
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src += 2;
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dst += 2;
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dstABCD = _mm_loadu_si128((__m128i*) dst);
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_mm_storeu_si128((__m128i *) old_dst, dstAB);
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srcABCD = _mm_loadu_si128((const __m128i*) src);
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}
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if (bp->width & 1) {
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__m128i srcAB = _mm_unpacklo_epi8(srcABCD, _mm_setzero_si128());
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__m128i dstAB = _mm_unpacklo_epi8(dstABCD, _mm_setzero_si128());
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__m128i alphaAB = _mm_shufflelo_epi16(srcAB, 0x3F);
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alphaAB = _mm_shufflehi_epi16(alphaAB, 0x3F);
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alphaAB = _mm_srli_epi16(alphaAB, 2);
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__m128i nom = _mm_sub_epi16(tr_nom_base, alphaAB);
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dstAB = _mm_mullo_epi16(dstAB, nom);
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dstAB = _mm_srli_epi16(dstAB, 8);
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dstAB = _mm_packus_epi16(dstAB, dstAB);
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(*dst).data = EXTR32(dstAB, 0);
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2014-01-02 23:12:32 +00:00
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}
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break;
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2014-01-03 18:03:14 +00:00
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}
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2014-01-02 23:12:32 +00:00
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}
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src_rgba_line = (const Colour*) ((const byte*) src_rgba_line + si->sprite_line_size);
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dst_line += bp->pitch;
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}
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}
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2014-01-03 18:43:10 +00:00
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IGNORE_UNINITIALIZED_WARNING_STOP
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2014-01-02 23:12:32 +00:00
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/**
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* Draws a sprite to a (screen) buffer. Calls adequate templated function.
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*
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* @param bp further blitting parameters
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* @param mode blitter mode
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* @param zoom zoom level at which we are drawing
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*/
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void Blitter_32bppSSE2::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom)
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{
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switch (mode) {
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case BM_NORMAL: {
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const BlockType bt_last = (BlockType) (bp->width & 1);
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if (bp->skip_left != 0 || bp->width <= MARGIN_NORMAL_THRESHOLD) {
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switch (bt_last) {
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case BT_EVEN: Draw<BM_NORMAL, RM_WITH_SKIP, BT_EVEN>(bp, zoom); return;
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case BT_ODD: Draw<BM_NORMAL, RM_WITH_SKIP, BT_ODD>(bp, zoom); return;
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default: NOT_REACHED();
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}
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} else {
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switch (bt_last) {
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case BT_EVEN: Draw<BM_NORMAL, RM_WITH_MARGIN, BT_EVEN>(bp, zoom); return;
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case BT_ODD: Draw<BM_NORMAL, RM_WITH_MARGIN, BT_ODD>(bp, zoom); return;
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default: NOT_REACHED();
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}
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}
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break;
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}
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case BM_COLOUR_REMAP:
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if (bp->skip_left != 0 || bp->width <= MARGIN_REMAP_THRESHOLD) {
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Draw<BM_COLOUR_REMAP, RM_WITH_SKIP, BT_NONE>(bp, zoom); return;
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} else {
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Draw<BM_COLOUR_REMAP, RM_WITH_MARGIN, BT_NONE>(bp, zoom); return;
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}
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case BM_TRANSPARENT: Draw<BM_TRANSPARENT, RM_NONE, BT_NONE>(bp, zoom); return;
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default: NOT_REACHED();
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}
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}
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2014-01-02 23:52:13 +00:00
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Sprite *Blitter_32bppSSE_Base::Encode(const SpriteLoader::Sprite *sprite, AllocatorProc *allocator)
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2014-01-02 23:12:32 +00:00
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{
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/* First uint32 of a line = ~1 & the number of transparent pixels from the left.
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* Second uint32 of a line = the number of transparent pixels from the right.
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* Then all RGBA then all MV.
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*/
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ZoomLevel zoom_min = ZOOM_LVL_NORMAL;
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ZoomLevel zoom_max = ZOOM_LVL_NORMAL;
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if (sprite->type != ST_FONT) {
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zoom_min = _settings_client.gui.zoom_min;
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zoom_max = _settings_client.gui.zoom_max;
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if (zoom_max == zoom_min) zoom_max = ZOOM_LVL_MAX;
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}
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/* Calculate sizes and allocate. */
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SpriteData sd;
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uint all_sprites_size = 0;
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for (ZoomLevel z = zoom_min; z <= zoom_max; z++) {
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const SpriteLoader::Sprite *src_sprite = &sprite[z];
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sd.infos[z].sprite_width = src_sprite->width;
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sd.infos[z].sprite_offset = all_sprites_size;
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sd.infos[z].sprite_line_size = sizeof(Colour) * src_sprite->width + sizeof(uint32) * META_LENGTH;
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const uint rgba_size = sd.infos[z].sprite_line_size * src_sprite->height;
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sd.infos[z].mv_offset = all_sprites_size + rgba_size;
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const uint mv_size = sizeof(MapValue) * src_sprite->width * src_sprite->height;
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all_sprites_size += rgba_size + mv_size;
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}
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Sprite *dst_sprite = (Sprite *) allocator(sizeof(Sprite) + sizeof(SpriteData) + all_sprites_size);
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dst_sprite->height = sprite->height;
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dst_sprite->width = sprite->width;
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dst_sprite->x_offs = sprite->x_offs;
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dst_sprite->y_offs = sprite->y_offs;
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memcpy(dst_sprite->data, &sd, sizeof(SpriteData));
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/* Copy colours. */
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for (ZoomLevel z = zoom_min; z <= zoom_max; z++) {
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const SpriteLoader::Sprite *src_sprite = &sprite[z];
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const SpriteLoader::CommonPixel *src = (const SpriteLoader::CommonPixel *) src_sprite->data;
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Colour *dst_rgba_line = (Colour *) &dst_sprite->data[sizeof(SpriteData) + sd.infos[z].sprite_offset];
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MapValue *dst_mv = (MapValue *) &dst_sprite->data[sizeof(SpriteData) + sd.infos[z].mv_offset];
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for (uint y = src_sprite->height; y != 0; y--) {
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Colour *dst_rgba = dst_rgba_line + META_LENGTH;
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for (uint x = src_sprite->width; x != 0; x--) {
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if (src->a != 0) {
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dst_rgba->a = src->a;
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dst_mv->m = src->m;
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if (src->m != 0) {
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/* Get brightest value (or default brightness if it's a black pixel). */
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const uint8 rgb_max = max(src->r, max(src->g, src->b));
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2014-01-02 23:52:13 +00:00
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dst_mv->v = (rgb_max == 0) ? Blitter_32bppBase::DEFAULT_BRIGHTNESS : rgb_max;
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2014-01-02 23:12:32 +00:00
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/* Pre-convert the mapping channel to a RGB value. */
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2014-01-02 23:52:13 +00:00
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const Colour colour = AdjustBrightness(Blitter_32bppBase::LookupColourInPalette(src->m), dst_mv->v);
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2014-01-02 23:12:32 +00:00
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dst_rgba->r = colour.r;
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dst_rgba->g = colour.g;
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dst_rgba->b = colour.b;
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} else {
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dst_rgba->r = src->r;
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dst_rgba->g = src->g;
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dst_rgba->b = src->b;
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2014-01-02 23:52:13 +00:00
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dst_mv->v = Blitter_32bppBase::DEFAULT_BRIGHTNESS;
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2014-01-02 23:12:32 +00:00
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}
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} else {
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dst_rgba->data = 0;
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|
|
|
*(uint16*) dst_mv = 0;
|
|
|
|
}
|
|
|
|
dst_rgba++;
|
|
|
|
dst_mv++;
|
|
|
|
src++;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Count the number of transparent pixels from the left. */
|
|
|
|
dst_rgba = dst_rgba_line + META_LENGTH;
|
|
|
|
uint32 nb_pix_transp = 0;
|
|
|
|
for (uint x = src_sprite->width; x != 0; x--) {
|
|
|
|
if (dst_rgba->a == 0) nb_pix_transp++;
|
|
|
|
else break;
|
|
|
|
dst_rgba++;
|
|
|
|
}
|
|
|
|
(*dst_rgba_line).data = nb_pix_transp & ~1; // "& ~1" to preserve the last block type
|
|
|
|
|
|
|
|
Colour *nb_right = dst_rgba_line + 1;
|
|
|
|
dst_rgba_line = (Colour*) ((byte*) dst_rgba_line + sd.infos[z].sprite_line_size);
|
|
|
|
|
|
|
|
/* Count the number of transparent pixels from the right. */
|
|
|
|
dst_rgba = dst_rgba_line - 1;
|
|
|
|
nb_pix_transp = 0;
|
|
|
|
for (uint x = src_sprite->width; x != 0; x--) {
|
|
|
|
if (dst_rgba->a == 0) nb_pix_transp++;
|
|
|
|
else break;
|
|
|
|
dst_rgba--;
|
|
|
|
}
|
|
|
|
(*nb_right).data = nb_pix_transp; // no "& ~1" here, must be done when we know bp->width
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return dst_sprite;
|
|
|
|
}
|
|
|
|
|
|
|
|
/** ReallyAdjustBrightness() is not called that often.
|
|
|
|
* Inlining this function implies a far jump, which has a huge latency.
|
|
|
|
*/
|
|
|
|
inline Colour Blitter_32bppSSE2::AdjustBrightness(Colour colour, uint8 brightness)
|
|
|
|
{
|
|
|
|
/* Shortcut for normal brightness. */
|
|
|
|
if (brightness == DEFAULT_BRIGHTNESS) return colour;
|
|
|
|
|
2014-01-02 23:52:13 +00:00
|
|
|
return Blitter_32bppSSE2::ReallyAdjustBrightness(colour, brightness);
|
2014-01-02 23:12:32 +00:00
|
|
|
}
|
|
|
|
|
2014-01-03 18:43:10 +00:00
|
|
|
IGNORE_UNINITIALIZED_WARNING_START
|
2014-01-02 23:52:13 +00:00
|
|
|
/* static */ Colour Blitter_32bppSSE2::ReallyAdjustBrightness(Colour colour, uint8 brightness)
|
2014-01-02 23:12:32 +00:00
|
|
|
{
|
|
|
|
ALIGN(16) uint64 c16 = colour.b | (uint64) colour.g << 16 | (uint64) colour.r << 32;
|
|
|
|
c16 *= brightness;
|
|
|
|
uint64 c16_ob = c16; // Helps out of order execution.
|
|
|
|
c16 /= DEFAULT_BRIGHTNESS;
|
|
|
|
c16 &= 0x01FF01FF01FF;
|
|
|
|
|
|
|
|
/* Sum overbright (maximum for each rgb is 508, 9 bits, -255 is changed in -256 so we just have to take the 8 lower bits into account). */
|
|
|
|
c16_ob = (((c16_ob >> (8 + 7)) & 0x0100010001) * 0xFF) & c16;
|
|
|
|
uint64 ob = (uint16) c16_ob + (uint16) (c16_ob >> 16) + (uint16) (c16_ob >> 32);
|
|
|
|
|
|
|
|
const uint32 alpha32 = colour.data & 0xFF000000;
|
|
|
|
__m128i ret;
|
|
|
|
INSR64(c16, ret, 0);
|
|
|
|
if (ob != 0) {
|
|
|
|
/* Reduce overbright strength. */
|
|
|
|
ob /= 2;
|
|
|
|
__m128i ob128;
|
|
|
|
INSR64(ob | ob << 16 | ob << 32, ob128, 0);
|
|
|
|
__m128i white = OVERBRIGHT_VALUE_MASK;
|
|
|
|
__m128i c128 = ret;
|
|
|
|
ret = _mm_subs_epu16(white, c128); /* PSUBUSW, (255 - rgb) */
|
|
|
|
ret = _mm_mullo_epi16(ret, ob128); /* PMULLW, ob*(255 - rgb) */
|
|
|
|
ret = _mm_srli_epi16(ret, 8); /* PSRLW, ob*(255 - rgb)/256 */
|
|
|
|
ret = _mm_add_epi16(ret, c128); /* PADDW, ob*(255 - rgb)/256 + rgb */
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = _mm_packus_epi16(ret, ret); /* PACKUSWB, saturate and pack. */
|
|
|
|
return alpha32 | EXTR32(ret, 0);
|
|
|
|
}
|
2014-01-03 18:43:10 +00:00
|
|
|
IGNORE_UNINITIALIZED_WARNING_STOP
|
2014-01-02 23:12:32 +00:00
|
|
|
|
|
|
|
#endif /* WITH_SSE */
|