77 lines
2.0 KiB
C++
77 lines
2.0 KiB
C++
/*
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Minetest
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Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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Copyright (C) 2017 numzero, Lobachevskiy Vitaliy <numzer0@yandex.ru>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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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 Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "plain.h"
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#include "settings.h"
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inline u32 scaledown(u32 coef, u32 size)
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{
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return (size + coef - 1) / coef;
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}
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RenderingCorePlain::RenderingCorePlain(
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IrrlichtDevice *_device, Client *_client, Hud *_hud)
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: RenderingCore(_device, _client, _hud)
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{
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scale = g_settings->getU16("undersampling");
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}
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void RenderingCorePlain::initTextures()
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{
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if (scale <= 1)
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return;
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v2u32 size{scaledown(scale, screensize.X), scaledown(scale, screensize.Y)};
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lowres = driver->addRenderTargetTexture(
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size, "render_lowres", video::ECF_A8R8G8B8);
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}
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void RenderingCorePlain::clearTextures()
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{
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if (scale <= 1)
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return;
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driver->removeTexture(lowres);
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}
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void RenderingCorePlain::beforeDraw()
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{
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if (scale <= 1)
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return;
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driver->setRenderTarget(lowres, true, true, skycolor);
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}
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void RenderingCorePlain::upscale()
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{
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if (scale <= 1)
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return;
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driver->setRenderTarget(0, true, true);
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v2u32 size{scaledown(scale, screensize.X), scaledown(scale, screensize.Y)};
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v2u32 dest_size{scale * size.X, scale * size.Y};
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driver->draw2DImage(lowres, core::rect<s32>(0, 0, dest_size.X, dest_size.Y),
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core::rect<s32>(0, 0, size.X, size.Y));
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}
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void RenderingCorePlain::drawAll()
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{
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draw3D();
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drawPostFx();
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upscale();
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drawHUD();
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}
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