overte-HifiExperiments/libraries/render-utils/src/OffscreenGlCanvas.cpp

77 lines
2.3 KiB
C++

//
// OffscreenGlCanvas.cpp
// interface/src/renderer
//
// Created by Bradley Austin Davis on 2014/04/09.
// Copyright 2015 High Fidelity, Inc.
//
// Distributed under the Apache License, Version 2.0.
// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//
#include "OffscreenGlCanvas.h"
#include <GLHelpers.h>
#include <QOpenGLDebugLogger>
#include <QOpenGLContext>
#include <QOffscreenSurface>
OffscreenGlCanvas::OffscreenGlCanvas() : _context(new QOpenGLContext), _offscreenSurface(new QOffscreenSurface){
}
OffscreenGlCanvas::~OffscreenGlCanvas() {
#ifdef DEBUG
if (_logger) {
makeCurrent();
delete _logger;
_logger = nullptr;
}
#endif
_context->doneCurrent();
}
void OffscreenGlCanvas::create(QOpenGLContext* sharedContext) {
if (nullptr != sharedContext) {
sharedContext->doneCurrent();
_context->setShareContext(sharedContext);
}
_context->setFormat(getDefaultOpenGlSurfaceFormat());
_context->create();
_offscreenSurface->setFormat(_context->format());
_offscreenSurface->create();
}
bool OffscreenGlCanvas::makeCurrent() {
bool result = _context->makeCurrent(_offscreenSurface);
Q_ASSERT(result);
std::call_once(_reportOnce, []{
qDebug() << "GL Version: " << QString((const char*) glGetString(GL_VERSION));
qDebug() << "GL Shader Language Version: " << QString((const char*) glGetString(GL_SHADING_LANGUAGE_VERSION));
qDebug() << "GL Vendor: " << QString((const char*) glGetString(GL_VENDOR));
qDebug() << "GL Renderer: " << QString((const char*) glGetString(GL_RENDERER));
});
#ifdef DEBUG
if (result && !_logger) {
_logger = new QOpenGLDebugLogger(this);
if (_logger->initialize()) {
connect(_logger, &QOpenGLDebugLogger::messageLogged, [](const QOpenGLDebugMessage& message) {
qDebug() << message;
});
_logger->disableMessages(QOpenGLDebugMessage::AnySource, QOpenGLDebugMessage::AnyType, QOpenGLDebugMessage::NotificationSeverity);
_logger->startLogging(QOpenGLDebugLogger::LoggingMode::SynchronousLogging);
}
}
#endif
return result;
}
void OffscreenGlCanvas::doneCurrent() {
_context->doneCurrent();
}