qt: Initial OpenGL 3.0 renderer implementation

src/qt/qt_opengloptionsdialog.cpp

@@ -0,0 +1,114 @@
+/*
+ * 86Box A hypervisor and IBM PC system emulator that specializes in
+ *      running old operating systems and software designed for IBM
+ *      PC systems and compatibles from 1981 through fairly recent
+ *      system designs based on the PCI bus.
+ *
+ *      This file is part of the 86Box distribution.
+ *
+ *      OpenGL renderer options dialog for Qt
+ *
+ * Authors:
+ *      Teemu Korhonen
+ *
+ *      Copyright 2022 Teemu Korhonen
+ */
+
+#include <QFileDialog>
+#include <QMessageBox>
+#include <QStringBuilder>
+
+#include <stdexcept>
+
+#include "qt_opengloptionsdialog.hpp"
+#include "qt_util.hpp"
+#include "ui_qt_opengloptionsdialog.h"
+
+OpenGLOptionsDialog::OpenGLOptionsDialog(QWidget *parent, const OpenGLOptions &options)
+    : QDialog(parent)
+    , ui(new Ui::OpenGLOptionsDialog)
+{
+    ui->setupUi(this);
+
+    if (options.renderBehavior() == OpenGLOptions::SyncWithVideo)
+        ui->syncWithVideo->setChecked(true);
+    else {
+        ui->syncToFramerate->setChecked(true);
+        ui->targetFps->setValue(options.framerate());
+    }
+
+    ui->vsync->setChecked(options.vSync());
+
+    if (!options.shaders().isEmpty()) {
+        auto path = options.shaders().first().path;
+        if (!path.isEmpty())
+            ui->shader->setPlainText(path);
+    }
+}
+
+OpenGLOptionsDialog::~OpenGLOptionsDialog()
+{
+    delete ui;
+}
+
+void
+OpenGLOptionsDialog::accept()
+{
+    auto options = new OpenGLOptions();
+
+    options->setRenderBehavior(
+        ui->syncWithVideo->isChecked()
+            ? OpenGLOptions::SyncWithVideo
+            : OpenGLOptions::TargetFramerate);
+
+    options->setFrameRate(ui->targetFps->value());
+
+    options->setVSync(ui->vsync->isChecked());
+
+    auto shader = ui->shader->toPlainText();
+
+    try {
+
+        if (!shader.isEmpty())
+            options->addShader(shader);
+        else
+            options->addDefaultShader();
+
+    } catch (std::runtime_error &e) {
+        delete options;
+
+        QMessageBox msgBox(this);
+        msgBox.setWindowTitle(tr("Shader error"));
+        msgBox.setText(tr("Could not load shaders."));
+        msgBox.setInformativeText(tr("More information in details."));
+        msgBox.setDetailedText(e.what());
+        msgBox.setIcon(QMessageBox::Critical);
+        msgBox.setStandardButtons(QMessageBox::Close);
+        msgBox.setDefaultButton(QMessageBox::Close);
+        msgBox.setStyleSheet("QTextEdit { min-width: 45em; }");
+        msgBox.exec();
+
+        return;
+    }
+
+    options->save();
+
+    emit optionsChanged(options);
+
+    QDialog::accept();
+}
+
+void
+OpenGLOptionsDialog::on_addShader_clicked()
+{
+    auto shader = QFileDialog::getOpenFileName(
+        this,
+        QString(),
+        QString(),
+        tr("OpenGL Shaders") % util::DlgFilter({ "glsl" }, true));
+
+    if (shader.isNull())
+        return;
+
+    ui->shader->setPlainText(shader);
+}