From 888e3d86a9954b7e42640029ada36f51827a8675 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Du=C5=A1an=20Poizl?= <nou.spiro@gmail.com>
Date: Thu, 7 Apr 2022 09:58:52 +0200
Subject: [PATCH] Use OpenGL 3.2 Core

---
 imagescrollareagl.cpp | 5 +++--
 imagescrollareagl.h   | 4 ++--
 main.cpp              | 3 ++-
 3 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/imagescrollareagl.cpp b/imagescrollareagl.cpp
index 489aa82..b2bba84 100644
--- a/imagescrollareagl.cpp
+++ b/imagescrollareagl.cpp
@@ -173,8 +173,9 @@ void ImageWidget::resizeGL(int w, int h)
 
 void ImageWidget::initializeGL()
 {
-    f = context()->versionFunctions<QOpenGLFunctions_3_0>();
+    f = context()->functions();
     f->glClearColor(0.5f, 0.5f, 0.5f, 1.0f);
+    QOpenGLFunctions_3_2_Core *f3 = context()->versionFunctions<QOpenGLFunctions_3_2_Core>();
 
     m_vao = std::unique_ptr<QOpenGLVertexArrayObject>(new QOpenGLVertexArrayObject);
     m_vao->create();
@@ -209,7 +210,7 @@ void ImageWidget::initializeGL()
     m_program = std::unique_ptr<QOpenGLShaderProgram>(new QOpenGLShaderProgram);
     m_program->addShaderFromSourceFile(QOpenGLShader::Vertex, ":/shaders/image.vert");
     m_program->addShaderFromSourceFile(QOpenGLShader::Fragment, ":/shaders/image.frag");
-    f->glBindFragDataLocation(m_program->programId(), 0, "color");
+    if(f3)f3->glBindFragDataLocation(m_program->programId(), 0, "color");
     if(!m_program->link())
     {
         qDebug() << "Link failed" << m_program->log();
diff --git a/imagescrollareagl.h b/imagescrollareagl.h
index 47b42bc..942585b 100644
--- a/imagescrollareagl.h
+++ b/imagescrollareagl.h
@@ -4,7 +4,7 @@
 #include <memory>
 #include <QObject>
 #include <QOpenGLWidget>
-#include <QOpenGLFunctions_3_0>
+#include <QOpenGLFunctions_3_2_Core>
 #include <QOpenGLShaderProgram>
 #include <QOpenGLBuffer>
 #include <QOpenGLTexture>
@@ -24,7 +24,7 @@ typedef enum
 class ImageWidget : public QOpenGLWidget
 {
     Q_OBJECT
-    QOpenGLFunctions_3_0 *f;
+    QOpenGLFunctions *f;
     std::unique_ptr<QOpenGLShaderProgram> m_program;
     std::unique_ptr<QOpenGLBuffer> m_buffer;
     std::unique_ptr<QOpenGLTexture> m_image;
diff --git a/main.cpp b/main.cpp
index 123e8da..332c42d 100644
--- a/main.cpp
+++ b/main.cpp
@@ -6,8 +6,9 @@ int main(int argc, char *argv[])
 {
     QSurfaceFormat format;
     format.setMajorVersion(3);
-    format.setMinorVersion(0);
+    format.setMinorVersion(2);
     format.setOption(QSurfaceFormat::DebugContext);
+    format.setProfile(QSurfaceFormat::OpenGLContextProfile::CoreProfile);
     QSurfaceFormat::setDefaultFormat(format);
 
     QApplication a(argc, argv);