qt: More error handling and tweaking to opengl 3 renderer

src/qt/qt_openglrenderer.hpp

@@ -32,6 +32,7 @@
 #endif
 
 #include <atomic>
+#include <stdexcept>
 #include <tuple>
 #include <vector>
 
@@ -90,8 +91,8 @@ private:
     void *unpackBuffer = nullptr;
 
     void initialize();
-    void setupExtensions();
-    void setupBuffers();
+    void initializeExtensions();
+    void initializeBuffers();
     void applyOptions();
     void applyShader(const OpenGLShaderPass &shader);
     bool notReady() const { return !isInitialized || isFinalized; }
@@ -107,4 +108,12 @@ private slots:
     void updateOptions(OpenGLOptions *newOptions);
 };
 
+class opengl_init_error : public std::runtime_error {
+public:
+    opengl_init_error(const QString &what)
+        : std::runtime_error(what.toStdString())
+    {
+    }
+};
+
 #endif