Qt: Shader editor now works

include/panda_qt/shader_editor.hpp

@@ -17,12 +17,11 @@ class ShaderEditorWindow : public QDialog {
 	Zep::IZepReplProvider replProvider;
 	static constexpr float fontSize = 14.0f;
 
-	// Whether this backend supports shader editor
-	bool shaderEditorSupported = true;
-
   public:
+	// Whether this backend supports shader editor
+	bool supported = true;
+
 	ShaderEditorWindow(QWidget* parent, const std::string& filename, const std::string& initialText);
 	void setText(const std::string& text) { zepWidget.GetEditor().GetMRUBuffer()->SetText(text); }
-
 	void setEnable(bool enable);
 };

include/renderer_gl/renderer_gl.hpp

@@ -92,6 +92,7 @@ class RendererGL final : public Renderer {
 	// Note: The caller is responsible for deleting the currently bound FBO before calling this
 	void setFBO(uint handle) { screenFramebuffer.m_handle = handle; }
 	void resetStateManager() { gl.reset(); }
+	void initUbershader(OpenGL::Program& program);
 
 #ifdef PANDA3DS_FRONTEND_QT
 	virtual void initGraphicsContext([[maybe_unused]] GL::Context* context) override { initGraphicsContextInternal(); }