mirror of https://github.com/OpenTTD/OpenTTD.git
100 lines
3.6 KiB
C++
100 lines
3.6 KiB
C++
/*
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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_anim.cpp Implementation of a partially SSSE2 32bpp blitter with animation support. */
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#ifdef WITH_SSE
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#include "../stdafx.h"
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#include "../video/video_driver.hpp"
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#include "32bpp_anim_sse2.hpp"
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#include "32bpp_sse_func.hpp"
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#include "../safeguards.h"
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/** Instantiation of the partially SSSE2 32bpp with animation blitter factory. */
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static FBlitter_32bppSSE2_Anim iFBlitter_32bppSSE2_Anim;
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GNU_TARGET("sse2")
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void Blitter_32bppSSE2_Anim::PaletteAnimate(const Palette &palette)
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{
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assert(!_screen_disable_anim);
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this->palette = palette;
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/* If first_dirty is 0, it is for 8bpp indication to send the new
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* palette. However, only the animation colours might possibly change.
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* Especially when going between toyland and non-toyland. */
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assert(this->palette.first_dirty == PALETTE_ANIM_START || this->palette.first_dirty == 0);
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const uint16_t *anim = this->anim_buf;
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Colour *dst = (Colour *)_screen.dst_ptr;
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bool screen_dirty = false;
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/* Let's walk the anim buffer and try to find the pixels */
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const int width = this->anim_buf_width;
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const int screen_pitch = _screen.pitch;
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const int anim_pitch = this->anim_buf_pitch;
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__m128i anim_cmp = _mm_set1_epi16(PALETTE_ANIM_START - 1);
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__m128i brightness_cmp = _mm_set1_epi16(Blitter_32bppBase::DEFAULT_BRIGHTNESS);
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__m128i colour_mask = _mm_set1_epi16(0xFF);
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for (int y = this->anim_buf_height; y != 0 ; y--) {
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Colour *next_dst_ln = dst + screen_pitch;
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const uint16_t *next_anim_ln = anim + anim_pitch;
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int x = width;
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while (x > 0) {
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__m128i data = _mm_load_si128((const __m128i *) anim);
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/* low bytes only, shifted into high positions */
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__m128i colour_data = _mm_and_si128(data, colour_mask);
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/* test if any colour >= PALETTE_ANIM_START */
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int colour_cmp_result = _mm_movemask_epi8(_mm_cmpgt_epi16(colour_data, anim_cmp));
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if (colour_cmp_result) {
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/* test if any brightness is unexpected */
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if (x < 8 || colour_cmp_result != 0xFFFF ||
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_mm_movemask_epi8(_mm_cmpeq_epi16(_mm_srli_epi16(data, 8), brightness_cmp)) != 0xFFFF) {
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/* slow path: < 8 pixels left or unexpected brightnesses */
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for (int z = std::min<int>(x, 8); z != 0 ; z--) {
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int value = _mm_extract_epi16(data, 0);
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uint8_t colour = GB(value, 0, 8);
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if (colour >= PALETTE_ANIM_START) {
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/* Update this pixel */
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*dst = AdjustBrightneSSE(LookupColourInPalette(colour), GB(value, 8, 8));
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screen_dirty = true;
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}
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data = _mm_srli_si128(data, 2);
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dst++;
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}
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} else {
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/* medium path: 8 pixels to animate all of expected brightnesses */
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for (int z = 0; z < 8; z++) {
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*dst = LookupColourInPalette(_mm_extract_epi16(colour_data, 0));
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colour_data = _mm_srli_si128(colour_data, 2);
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dst++;
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}
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screen_dirty = true;
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}
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} else {
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/* fast path, no animation */
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dst += 8;
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}
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anim += 8;
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x -= 8;
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}
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dst = next_dst_ln;
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anim = next_anim_ln;
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}
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if (screen_dirty) {
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/* Make sure the backend redraws the whole screen */
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VideoDriver::GetInstance()->MakeDirty(0, 0, _screen.width, _screen.height);
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}
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}
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#endif /* WITH_SSE */
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