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69 lines
2.5 KiB
C++
69 lines
2.5 KiB
C++
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// Copyright 2008-2010 by Benoît Jacob <jacob.benoit.1@gmail.com>
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of
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// the License or (at your option) version 3 or any later version
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// accepted by the membership of KDE e.V. (or its successor approved
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// by the membership of KDE e.V.), which shall act as a proxy
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// defined in Section 14 of version 3 of the license.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include "mandelbrot.h"
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#include "render.h"
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MandelbrotRenderThread::MandelbrotRenderThread(Mandelbrot *m) : m_mandelbrot(m)
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{
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connect(this, SIGNAL(tileDone(MandelbrotTile)), m_mandelbrot, SLOT(tileDone(MandelbrotTile)));
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}
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void MandelbrotRenderThread::run()
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{
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while(true)
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{
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MandelbrotTile tile;
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if(!m_mandelbrot->tiling().next(&tile)) return;
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QRect destination = tile.destination();
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// this is on purpose slightly larger than machine epsilon for float (gave artifacts near the transition point)
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const qreal double_precision_threshold = (qreal)4.0e-07;
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const qreal rendering_resolution = m_mandelbrot->resolution() / m_mandelbrot->supersampling();
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#ifdef HAVE_PATH_WITH_SSE2_EXPLICTLY_ENABLED
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if(m_mandelbrot->hasSSE2())
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{
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if(rendering_resolution > double_precision_threshold) {
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with_SSE2_explicitly_enabled_if_x86::mandelbrot_render_tile<float>(m_mandelbrot, tile);
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}
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else {
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with_SSE2_explicitly_enabled_if_x86::mandelbrot_render_tile<double>(m_mandelbrot, tile);
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}
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}
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else
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#endif
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{
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if(rendering_resolution > double_precision_threshold) {
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with_arch_defaults::mandelbrot_render_tile<float>(m_mandelbrot, tile);
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}
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else {
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with_arch_defaults::mandelbrot_render_tile<double>(m_mandelbrot, tile);
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}
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}
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// abort if required
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if(m_mandelbrot->abortRenderingAsSoonAsPossible()) return;
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// tell the world we've got a shiny new tile
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emit tileDone(tile);
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}
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}
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#include "renderthread.moc"
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