86 lines
2.1 KiB
C++
86 lines
2.1 KiB
C++
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/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2019 Olive Team
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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 General Public License as published by
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the Free Software Foundation, either version 3 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 General Public License for more details.
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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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***/
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#include "waveform.h"
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#include "node/node.h"
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#include "render/backend/opengl/openglrenderfunctions.h"
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OLIVE_NAMESPACE_ENTER
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WaveformScope::WaveformScope(QWidget* parent) :
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ManagedDisplayWidget(parent),
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texture_(nullptr)
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{
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EnableDefaultContextMenu();
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}
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void WaveformScope::SetTexture(OpenGLTexture *texture)
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{
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texture_ = texture;
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update();
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}
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void WaveformScope::initializeGL()
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{
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ManagedDisplayWidget::initializeGL();
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pipeline_ = OpenGLShader::Create();
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pipeline_->create();
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pipeline_->addShaderFromSourceCode(QOpenGLShader::Vertex, OpenGLShader::CodeDefaultVertex());
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pipeline_->addShaderFromSourceCode(QOpenGLShader::Fragment, Node::ReadFileAsString(":/shaders/rgbwaveform.frag"));
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pipeline_->link();
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}
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void WaveformScope::paintGL()
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{
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context()->functions()->glClearColor(0, 0, 0, 0);
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context()->functions()->glClear(GL_COLOR_BUFFER_BIT);
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if (!pipeline_ || !texture_) {
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return;
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}
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pipeline_->bind();
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pipeline_->setUniformValue("ove_resolution", texture_->width(), texture_->height());
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pipeline_->setUniformValue("ove_viewport", width(), height());
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// The general size of a pixel
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pipeline_->setUniformValue("threshold", 2.0f / static_cast<float>(height()));
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pipeline_->release();
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texture_->Bind();
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OpenGLRenderFunctions::Blit(pipeline_);
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texture_->Release();
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}
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void WaveformScope::CleanUp()
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{
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pipeline_ = nullptr;
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texture_ = nullptr;
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}
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OLIVE_NAMESPACE_EXIT
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