From 30376341d154cff167d5fa290c2e728cf7bf0d05 Mon Sep 17 00:00:00 2001
From: Cacodemon345 <wahil1976@outlook.com>
Date: Fri, 17 Dec 2021 12:17:54 +0600
Subject: [PATCH] Start of windowed OpenGL rendering

---
 src/qt/qt_hardwarerenderer.cpp | 10 +++++++---
 src/qt/qt_hardwarerenderer.hpp | 11 +++++++----
 src/qt/qt_rendererstack.cpp    | 10 ++++++----
 3 files changed, 20 insertions(+), 11 deletions(-)

diff --git a/src/qt/qt_hardwarerenderer.cpp b/src/qt/qt_hardwarerenderer.cpp
index d1bd781ae..856577d50 100644
--- a/src/qt/qt_hardwarerenderer.cpp
+++ b/src/qt/qt_hardwarerenderer.cpp
@@ -17,6 +17,12 @@ void HardwareRenderer::initializeGL()
 }
 
 void HardwareRenderer::paintGL() {
+    //onPaint(this);
+}
+
+void HardwareRenderer::paintUnderGL() {
+    glClearColor(0.f, 0.f, 0.f, 1.f);
+    glClear(GL_COLOR_BUFFER_BIT);
     onPaint(this);
 }
 
@@ -24,11 +30,9 @@ void HardwareRenderer::setRenderType(RenderType type) {
     QSurfaceFormat format;
     switch (type) {
     case RenderType::OpenGL:
-        setTextureFormat(GL_RGB);
         format.setRenderableType(QSurfaceFormat::OpenGL);
         break;
     case RenderType::OpenGLES:
-        setTextureFormat((QApplication::platformName().contains("wayland") || QApplication::platformName() == "cocoa") ? GL_RGB : GL_RGBA);
         format.setRenderableType(QSurfaceFormat::OpenGLES);
         break;
     }
@@ -45,5 +49,5 @@ void HardwareRenderer::onBlit(const QImage& img, int x, int y, int w, int h, std
 
 void HardwareRenderer::resizeEvent(QResizeEvent *event) {
     onResize(width(), height());
-    QOpenGLWidget::resizeEvent(event);
+    QOpenGLWindow::resizeEvent(event);
 }
diff --git a/src/qt/qt_hardwarerenderer.hpp b/src/qt/qt_hardwarerenderer.hpp
index fa9e7ec31..a1bd4ff86 100644
--- a/src/qt/qt_hardwarerenderer.hpp
+++ b/src/qt/qt_hardwarerenderer.hpp
@@ -2,6 +2,7 @@
 
 #include <QOpenGLFunctions>
 #include <QOpenGLWidget>
+#include <QOpenGLWindow>
 #include <QPainter>
 #include <QEvent>
 #include <QKeyEvent>
@@ -16,7 +17,7 @@
 #include "wl_mouse.hpp"
 #endif
 
-class HardwareRenderer : public QOpenGLWidget, protected QOpenGLFunctions, public RendererCommon
+class HardwareRenderer : public QOpenGLWindow, protected QOpenGLFunctions, public RendererCommon
 {
 	Q_OBJECT
 
@@ -26,10 +27,12 @@ public:
     void resizeGL(int w, int h) override;
     void initializeGL() override;
     void paintGL() override;
-    HardwareRenderer(QWidget* parent = nullptr)
-    : QOpenGLWidget(parent), QOpenGLFunctions()
+    void paintUnderGL() override;
+    HardwareRenderer(QWindow* parent = nullptr)
+    : QOpenGLWindow(QOpenGLWindow::PartialUpdateBlend, parent), QOpenGLFunctions()
     {
-        setMinimumSize(16, 16);
+        setMinimumSize(QSize(16, 16));
+        setFlags(Qt::FramelessWindowHint);
     }
     ~HardwareRenderer()
     {
diff --git a/src/qt/qt_rendererstack.cpp b/src/qt/qt_rendererstack.cpp
index 23f61f186..0b89f258d 100644
--- a/src/qt/qt_rendererstack.cpp
+++ b/src/qt/qt_rendererstack.cpp
@@ -183,18 +183,20 @@ void RendererStack::switchRenderer(Renderer renderer) {
         break;
     case Renderer::OpenGL:
     {
-        auto hw = new HardwareRenderer(this);
+        this->createWinId();
+        auto hw = new HardwareRenderer(this->windowHandle());
         connect(this, &RendererStack::blitToRenderer, hw, &HardwareRenderer::onBlit, Qt::QueuedConnection);
         hw->setRenderType(HardwareRenderer::RenderType::OpenGL);
-        current.reset(hw);
+        current.reset(this->createWindowContainer(hw, this));
         break;
     }
     case Renderer::OpenGLES:
     {
-        auto hw = new HardwareRenderer(this);
+        this->createWinId();
+        auto hw = new HardwareRenderer(this->windowHandle());
         connect(this, &RendererStack::blitToRenderer, hw, &HardwareRenderer::onBlit, Qt::QueuedConnection);
         hw->setRenderType(HardwareRenderer::RenderType::OpenGLES);
-        current.reset(hw);
+        current.reset(this->createWindowContainer(hw, this));
         break;
     }
     }