162 lines
4.2 KiB
C++
162 lines
4.2 KiB
C++
/***
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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 "viewerglwidget.h"
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#include <QMenu>
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#include <QOpenGLContext>
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#include <QOpenGLFunctions>
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#include <QOpenGLTexture>
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#include "render/backend/opengl/functions.h"
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#include "render/backend/opengl/openglshader.h"
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ViewerGLWidget::ViewerGLWidget(QWidget *parent) :
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QOpenGLWidget(parent),
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texture_(0),
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ocio_lut_(0)
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{
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connect(ColorManager::instance(), SIGNAL(ConfigChanged()), this, SLOT(ColorConfigChangedSlot()));
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RefreshColorSettings();
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setContextMenuPolicy(Qt::CustomContextMenu);
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connect(this, SIGNAL(customContextMenuRequested(const QPoint&)), this, SLOT(ShowContextMenu(const QPoint&)));
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}
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ViewerGLWidget::~ViewerGLWidget()
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{
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ContextCleanup();
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}
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void ViewerGLWidget::SetTexture(GLuint tex)
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{
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// Update the texture
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texture_ = tex;
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// Paint the texture
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update();
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}
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void ViewerGLWidget::initializeGL()
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{
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SetupPipeline();
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connect(context(), SIGNAL(aboutToBeDestroyed()), this, SLOT(ContextCleanup()), Qt::DirectConnection);
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}
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void ViewerGLWidget::paintGL()
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{
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// Get functions attached to this context (they will already be initialized)
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QOpenGLFunctions* f = context()->functions();
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// Clear background to empty
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f->glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
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f->glClear(GL_COLOR_BUFFER_BIT);
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// Check if we have a texture to draw
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if (texture_ > 0) {
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// Bind retrieved texture
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f->glBindTexture(GL_TEXTURE_2D, texture_);
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// Blit using the pipeline retrieved in initializeGL()
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olive::gl::OCIOBlit(pipeline_, ocio_lut_, true);
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// Release retrieved texture
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f->glBindTexture(GL_TEXTURE_2D, 0);
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}
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}
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void ViewerGLWidget::SetupPipeline()
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{
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// Re-retrieve pipeline pertaining to this context
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pipeline_ = OpenGLShader::CreateOCIO(context(),
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ocio_lut_,
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color_service_->GetProcessor(),
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true);
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}
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void ViewerGLWidget::RefreshColorSettings()
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{
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// FIXME: Should probably check first whether the new config has the existing settings
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ocio_display_ = ColorManager::GetDefaultDisplay();
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ocio_view_ = ColorManager::GetDefaultView(ocio_display_);
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ocio_look_.clear();
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SetupColorProcessor();
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}
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void ViewerGLWidget::SetupColorProcessor()
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{
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color_service_ = ColorProcessor::Create(OCIO::ROLE_SCENE_LINEAR, ocio_display_, ocio_view_, ocio_look_);
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}
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void ViewerGLWidget::ContextCleanup()
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{
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makeCurrent();
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if (ocio_lut_ != 0) {
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context()->functions()->glDeleteTextures(1, &ocio_lut_);
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ocio_lut_ = 0;
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}
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pipeline_ = nullptr;
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doneCurrent();
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}
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void ViewerGLWidget::ShowContextMenu(const QPoint &pos)
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{
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QMenu menu;
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QStringList displays = ColorManager::ListAvailableDisplays();
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QMenu* ocio_display_menu = menu.addMenu(tr("OCIO Display"));
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foreach (QString d, displays) {
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QAction* action = ocio_display_menu->addAction(d);
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action->setChecked(ocio_display_ == d);
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}
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QStringList views = ColorManager::ListAvailableViews(ocio_display_);
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QMenu* ocio_view_menu = menu.addMenu(tr("OCIO View"));
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foreach (QString v, views) {
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QAction* action = ocio_view_menu->addAction(v);
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action->setChecked(ocio_view_ == v);
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}
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QStringList looks = ColorManager::ListAvailableLooks();
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QMenu* ocio_look_menu = menu.addMenu(tr("OCIO Look"));
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foreach (QString l, looks) {
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QAction* action = ocio_look_menu->addAction(l);
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action->setChecked(ocio_look_ == l);
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}
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menu.exec(mapToGlobal(pos));
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}
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void ViewerGLWidget::ColorConfigChangedSlot()
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{
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RefreshColorSettings();
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if (pipeline_ != nullptr) {
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SetupPipeline();
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}
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}
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