94 lines
2.5 KiB
C++
94 lines
2.5 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 <QOpenGLContext>
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#include <QOpenGLFunctions>
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#include <QOpenGLTexture>
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#include "render/gl/functions.h"
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#include "render/gl/shadergenerators.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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// FIXME: Hardcoded values for testing
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color_service_ = ColorService::Create(OCIO::ROLE_SCENE_LINEAR, "srgb");
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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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// Re-retrieve pipeline pertaining to this context
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pipeline_ = olive::ShaderGenerator::OCIOPipeline(context(),
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ocio_lut_,
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color_service_->GetProcessor(),
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true);
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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::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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