a bunch of junk, merging 'shitty' branch

MG/MG_RHI/GLES/RHI.h

@@ -0,0 +1,50 @@
+//
+// Created by Swung 0x48 on 2025/5/6.
+//
+
+#ifndef MOBILEGL_RHI_H
+#define MOBILEGL_RHI_H
+
+#include "../../Includes.h"
+
+namespace MG_RHI::GLES {
+    enum class State {
+        None,
+        DrawArrays,
+        DrawElements
+    };
+
+    class RHI {
+    public:
+        void TransitionTo(State toState);
+
+        static inline RHI& GetInstance() {
+            static RHI s_rhi;
+            return s_rhi;
+        }
+
+        static void CheckError();
+
+        void SyncAllTexturesToGLES(TextureState* textureState);
+        void SyncAllBuffersToGLES(BufferState* bufferState);
+    private:
+
+        State currentState_ = State::None;
+        std::unordered_map<GLuint, GLuint> textureMap_;
+        std::unordered_map<GLuint, std::unordered_map<GLint, bool>> textureLevelUploaded_;
+        std::unordered_map<GLuint, GLuint> bufferMap_;
+        std::array<GLuint, 32> lastBoundTextures { 0 };
+        std::unordered_map<GLuint, GLuint> vaoMap_;
+
+        std::unordered_map<GLuint, GLuint> programMap_;
+        std::unordered_map<GLuint, GLuint> framebufferMap_;
+
+        GLuint lastBoundVAO = 0;
+        GLuint lastBoundProgram = 0;
+        GLuint lastBoundFBO = 0;
+    };
+}
+
+#define MGL_TRY(operation) MG_Util::Debug::LogD("GLES call: %s", #operation); operation MG_RHI::GLES::RHI::CheckError();
+
+#endif //MOBILEGL_RHI_H