OpenGL: Rework contexts

include/Nazara/OpenGLRenderer/Wrapper/Context.hpp

@@ -4,28 +4,65 @@
 
 #pragma once
 
-#ifndef NAZARA_OPENGLRENDERER_CONTEXT_HPP
-#define NAZARA_OPENGLRENDERER_CONTEXT_HPP
+#ifndef NAZARA_OPENGLRENDERER_CONTEXTIMPL_HPP
+#define NAZARA_OPENGLRENDERER_CONTEXTIMPL_HPP
 
 #include <Nazara/Prerequisites.hpp>
-#include <Nazara/OpenGLRenderer/Wrapper/GLContext.hpp>
-#include <memory>
+#include <Nazara/OpenGLRenderer/Wrapper/CoreFunctions.hpp>
+#include <string>
+#include <unordered_set>
 
 namespace Nz::GL
 {
+	enum class ContextType
+	{
+		OpenGL,
+		OpenGL_ES
+	};
+
+	struct ContextParams
+	{
+		ContextType type = ContextType::OpenGL_ES;
+		bool doubleBuffering = true;
+		unsigned int bitsPerPixel = 32;
+		unsigned int depthBits = 24;
+		unsigned int glMajorVersion = 0;
+		unsigned int glMinorVersion = 0;
+		unsigned int sampleCount = 1;
+		unsigned int stencilBits = 8;
+	};
+
+	class Loader;
+
 	class Context
 	{
 		public:
 			Context() = default;
-			Context(const Context&) = delete;
-			Context(Context&& object) noexcept = default;
-			~Context() = default;
+			virtual ~Context();
 
-			Context& operator=(const Context&) = delete;
-			Context& operator=(Context&& object) noexcept = default;
+			virtual bool Activate() = 0;
 
-		private:
-			std::unique_ptr<GLContext> m_impl;
+			virtual void EnableVerticalSync(bool enabled) = 0;
+
+			inline const ContextParams& GetParams() const;
+
+			inline bool IsExtensionSupported(const std::string& extension) const;
+
+			bool Initialize(const ContextParams& params);
+
+			virtual void SwapBuffers() = 0;
+
+#define NAZARA_OPENGLRENDERER_FUNC(name, sig) sig name = nullptr;
+			NAZARA_OPENGLRENDERER_FOREACH_GLES_FUNC(NAZARA_OPENGLRENDERER_FUNC)
+#undef NAZARA_OPENGLRENDERER_FUNC
+
+		protected:
+			virtual const Loader& GetLoader() = 0;
+
+			virtual bool ImplementFallback(const std::string_view& function) = 0;
+
+			std::unordered_set<std::string> m_supportedExtensions;
+			ContextParams m_params;
 	};
 }