126 lines
2.7 KiB
C++
126 lines
2.7 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 "renderinstance.h"
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#include <QDebug>
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#include "opengl/openglshader.h"
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RenderInstance::RenderInstance(const VideoRenderingParams& params) :
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share_ctx_(nullptr),
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params_(params)
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{
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// Create offscreen surface
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surface_.create();
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}
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RenderInstance::~RenderInstance()
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{
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// Destroy offscreen surface
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surface_.destroy();
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}
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void RenderInstance::SetShareContext(QOpenGLContext *share)
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{
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Q_ASSERT(!IsStarted());
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share_ctx_ = share;
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}
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bool RenderInstance::Start()
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{
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if (IsStarted()) {
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return true;
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}
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// Create context object
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ctx_ = new QOpenGLContext();
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// If we're sharing resources, set this up now
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if (share_ctx_ != nullptr) {
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ctx_->setShareContext(share_ctx_);
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}
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// Create OpenGL context (automatically destroys any existing if there is one)
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if (!ctx_->create()) {
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qWarning() << tr("Failed to create OpenGL context in thread %1").arg(reinterpret_cast<quintptr>(this));
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return false;
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}
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// Make context current on that surface
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if (!ctx_->makeCurrent(&surface_)) {
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qWarning() << tr("Failed to makeCurrent() on offscreen surface in thread %1").arg(reinterpret_cast<quintptr>(this));
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return false;
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}
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buffer_.Create(ctx_);
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// Set viewport to the compositing dimensions
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ctx_->functions()->glViewport(0, 0, params_.effective_width(), params_.effective_height());
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ctx_->functions()->glEnable(GL_BLEND);
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// Set up default pipeline
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default_pipeline_ = OpenGLShader::CreateDefault();
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return true;
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}
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void RenderInstance::Stop()
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{
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if (IsStarted()) {
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return;
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}
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// Destroy pipeline
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default_pipeline_ = nullptr;
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// Destroy buffer
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buffer_.Destroy();
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// Destroy context
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delete ctx_;
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}
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bool RenderInstance::IsStarted()
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{
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return buffer_.IsCreated();
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}
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OpenGLFramebuffer *RenderInstance::buffer()
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{
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return &buffer_;
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}
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QOpenGLContext *RenderInstance::context()
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{
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return ctx_;
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}
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const VideoRenderingParams &RenderInstance::params() const
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{
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return params_;
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}
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OpenGLShaderPtr RenderInstance::default_pipeline() const
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{
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return default_pipeline_;
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}
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