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/*
Minetest
Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
Copyright (C) 2017 numzero, Lobachevskiy Vitaliy <numzer0@yandex.ru>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "sidebyside.h"
#include "client/hud.h"
#include "client/camera.h"
DrawImageStep::DrawImageStep(u8 texture_index, v2f _offset) :
texture_index(texture_index), offset(_offset)
{}
void DrawImageStep::setRenderSource(RenderSource *_source)
{
source = _source;
}
void DrawImageStep::setRenderTarget(RenderTarget *_target)
{
target = _target;
}
void DrawImageStep::run(PipelineContext &context)
{
if (target)
target->activate(context);
auto texture = source->getTexture(texture_index);
core::dimension2du output_size = context.device->getVideoDriver()->getScreenSize();
v2s32 pos(offset.X * output_size.Width, offset.Y * output_size.Height);
context.device->getVideoDriver()->draw2DImage(texture, pos);
}
void populateSideBySidePipeline(RenderPipeline *pipeline, Client *client, bool horizontal, bool flipped, v2f &virtual_size_scale)
{
static const u8 TEXTURE_LEFT = 0;
static const u8 TEXTURE_RIGHT = 1;
v2f offset;
if (horizontal) {
virtual_size_scale = v2f(1.0f, 0.5f);
offset = v2f(0.0f, 0.5f);
}
else {
virtual_size_scale = v2f(0.5f, 1.0f);
offset = v2f(0.5f, 0.0f);
}
TextureBuffer *buffer = pipeline->createOwned<TextureBuffer>();
buffer->setTexture(TEXTURE_LEFT, virtual_size_scale, "3d_render_left", video::ECF_A8R8G8B8);
buffer->setTexture(TEXTURE_RIGHT, virtual_size_scale, "3d_render_right", video::ECF_A8R8G8B8);
auto step3D = pipeline->own(create3DStage(client, virtual_size_scale));
// eyes
for (bool right : { false, true }) {
pipeline->addStep<OffsetCameraStep>(flipped ? !right : right);
auto output = pipeline->createOwned<TextureBufferOutput>(buffer, right ? TEXTURE_RIGHT : TEXTURE_LEFT);
pipeline->addStep<SetRenderTargetStep>(step3D, output);
pipeline->addStep(step3D);
pipeline->addStep<MapPostFxStep>();
pipeline->addStep<DrawHUD>();
}
pipeline->addStep<OffsetCameraStep>(0.0f);
auto screen = pipeline->createOwned<ScreenTarget>();
for (bool right : { false, true }) {
auto step = pipeline->addStep<DrawImageStep>(
right ? TEXTURE_RIGHT : TEXTURE_LEFT,
right ? offset : v2f());
step->setRenderSource(buffer);
step->setRenderTarget(screen);
}
}
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