Added vertex buffers/data handling and shader/program handling

engine/NBCore/CMakeLists.txt

@@ -1,5 +1,5 @@
 toAbsolutePath(NB_CORE_SOURCE 
-    ./src/Errors.cpp
+    ./src/ErrorsImpl.cpp
     ./src/Logger.cpp
     ./src/Processes.cpp
     ./src/StringUtils.cpp
@@ -10,6 +10,7 @@ toAbsolutePath(NB_CORE_INCLUDE
     ./ANSITerm.hpp
     ./DataSink.hpp
     ./Errors.hpp
+    ./ErrorsImpl.hpp
     ./Logger.hpp
     ./Processes.hpp
     ./StringUtils.hpp

engine/NBCore/DataSink.hpp

@@ -72,11 +72,11 @@ template<typename DataType, typename ProcessorType>
 class MultithreadedDataProcessor 
 : public BufferedDataProcessor<DataType, ThreadsafeQueue<DataType>, ProcessorType> {
     using Base = BufferedDataProcessor<DataType, ThreadsafeQueue<DataType>, ProcessorType>;
-public:
+    public:
     ~MultithreadedDataProcessor() { type_ptr->stop(); }
 
     bool isRunning() const noexcept override {
-        return this->_running && (_runningThread!=nullptr);
+        return this->_running;
     }
     bool run() override {
         if (!type_ptr->isRunning()) {
@@ -98,7 +98,7 @@ public:
         return !type_ptr->isRunning();
     }
 
-protected:
+    protected:
     using Base::Base;
 
     unsigned int count() const {

engine/NBCore/Errors.hpp

@@ -2,281 +2,11 @@
 #ifndef _NB_ERROR
 #define _NB_ERROR
 
-#include <exception>
+#include "ErrorsImpl.hpp"
-#include <memory>
-#include <string>
-#include <type_traits>
-#include <unordered_map>
-
 #include "Logger.hpp"
-#include "StringUtils.hpp"
-#include "TypeTraits.hpp"
 
 namespace nb {
 
-typedef std::unordered_map<unsigned int, const char*> ErrorCodeMap;
-
-template<typename T>
-constexpr bool IsValidException_v = std::is_base_of_v<std::exception, T>;
-template <typename T>
-using IsValidException = std::enable_if_t<IsValidException_v<T>, bool>;
-
-template<class ErrorType=NoneType>
-class ErrorBase;
-
-template <class ErrorType=NoneType>
-class Error;
-
-template<typename T>
-constexpr bool IsValidNBError_v = std::is_base_of_v<ErrorBase<NoneType>, T>;
-template <typename T>
-using IsValidNBError = std::enable_if_t<IsValidNBError_v<T>, bool>;
-
-
-template<>
-class ErrorBase<NoneType> {
-public:
-    const unsigned int code;
-    const std::string msg;
-    const std::string type;
-    const std::shared_ptr<const void> trace;
-    const bool traceIsNBError;
-
-    virtual std::string what() const noexcept = 0;
-    virtual std::shared_ptr<ErrorBase> make_shared() const noexcept = 0;
-    
-protected:
-    template<typename T=NoneType>
-    ErrorBase(const ErrorBase<T>& err) : ErrorBase(std::move(err)) {}
-
-    template<typename T=NoneType>
-    ErrorBase(ErrorBase<T>&& err) : ErrorBase(
-        err.code,
-        err.msg,
-        err.type,
-        (err.traceIsNBError) 
-            ? static_cast<const ErrorBase*>(err.trace.get()) 
-            : static_cast<const std::exception*>(err.trace.get())
-    ) {}
-
-    ErrorBase(
-        unsigned int code_,
-        std::string msg_,
-        std::string type_,
-        const std::exception* trace_
-    ) noexcept :
-        code(code_),
-        msg(msg_),
-        type(type_),
-        trace{  trace_ ? 
-            std::static_pointer_cast<const void>(
-                std::make_shared<Error<NoneType>>(*trace_)) 
-            : nullptr,
-        },
-        traceIsNBError(false)
-    {}
-
-    template<typename T, std::enable_if_t<IsValidNBError_v<T>, bool> = true>
-    ErrorBase(
-        unsigned int code_,
-        std::string msg_,
-        std::string type_,
-        const T* trace_
-    ) noexcept :
-        code(code_),
-        msg(msg_),
-        type(type_),
-        trace{trace_ ? trace_->make_shared() : nullptr},
-        traceIsNBError(true)
-    {}
-};
-
-
-template <class ErrorType>
-class ErrorBase : public ErrorBase<NoneType> {
-private:
-    using Base = ErrorBase<NoneType>;
-    void inline check_asserts() {
-        static_assert(std::is_same<const std::unordered_map<unsigned int, const char*>, decltype(ErrorType::ErrorMessages)>::value,
-            "const std::unordered_map<unsigned int, const char*> ErrorMessages must be "
-            "a class member."
-        );
-        static_assert(std::is_enum_v<typename ErrorType::Codes>, "enum Codes must be a class member.");
-        static_assert(std::is_same<std::underlying_type_t<typename ErrorType::Codes>, unsigned int>::value,
-            "enum Codes must be of underlying type unsigned int."
-        );
-        static_assert(std::is_same<const std::string, decltype(ErrorType::type)>::value,
-            "const std::string type must be a class member."
-        );
-    }
-
-public:
-    template <typename T>
-    ErrorBase(const ErrorBase<T>& cpy) : Base(cpy) { check_asserts(); }
-
-    virtual std::shared_ptr<Base> make_shared() const noexcept override {
-        return std::static_pointer_cast<Base>(
-            std::make_shared<ErrorBase>(*this)
-        );
-    }
-
-    virtual std::string what() const noexcept override {
-        std::string ret = msg;
-        if (trace) {
-            std::string trace_msg;
-            if (traceIsNBError) { 
-                trace_msg = std::static_pointer_cast<const Base>(trace)->what();
-            } else {
-                trace_msg = std::string(std::static_pointer_cast<const Base>(trace)->what());
-            }
-            ret += nb::NEWLINE + indent_strblock(
-                trace_msg,
-                nb::TABOVER,
-                nb::TABOVER+"Trace: "
-            );
-        }
-        return ret;
-    }
-
-    static const std::string type;
-    static const ErrorCodeMap ErrorMessages; 
-
-    using Base::code;
-    using Base::msg;
-    using Base::trace;
-    using Base::traceIsNBError;
-
-    friend ErrorType;
-    friend Error<ErrorType>;
-
-protected:
-    using Base::Base;
-
-    template <typename T>
-    ErrorBase(
-        unsigned int code_,
-        std::string msg_,
-        std::string type_,
-        const T* trace_
-    ) : Base(
-        code_,
-        msg_,
-        type_,
-        trace_
-    ) { check_asserts(); }
-};
-template <typename ErrorType>
-const std::string ErrorBase<ErrorType>::type = ErrorType::type;
-template <typename ErrorType>
-const ErrorCodeMap ErrorBase<ErrorType>::ErrorMessages = ErrorType::ErrorMessages;
-
-
-template <class ErrorType>
-class Error : public ErrorBase<ErrorType> {
-    using Base = ErrorBase<ErrorType>;
-public:
-    template <typename T>
-    Error(
-        unsigned int code_,
-        const T& trace_
-    ) noexcept : Base(
-        code_, 
-        ErrorType::ErrorMessages.at(code_),
-        ErrorType::type,
-        &trace_
-    ) {}
-
-    template<typename ET>
-    Error(
-        std::string msg_,
-        const ErrorBase<ET>& trace_
-    ) noexcept : Base(
-        0, 
-        msg_,
-        ErrorType::type,
-        &trace_
-    ) {}
-
-    Error(
-        std::string msg_,
-        const std::exception& trace_
-    ) noexcept : Base(
-        0, 
-        msg_,
-        ErrorType::type,
-        &trace_
-    ) {}
-
-    Error(unsigned int code_) noexcept : Base(
-        code_, 
-        ErrorType::ErrorMessages.at(code_),
-        ErrorType::type,
-        NULLPTR<std::exception>
-    ) {}
-
-    Error(std::string msg_) noexcept : Base(
-        0, 
-        msg_,
-        ErrorType::type,
-        NULLPTR<std::exception>
-    ) {}
-
-    using Base::what;
-    using Base::code;
-    using Base::msg;
-    using Base::trace;
-    using Base::traceIsNBError;
-    using Base::type;
-    using Base::ErrorMessages;
-
-protected:
-    using Base::Base;
-
-};
-
-
-template<>
-class Error<NoneType> : public ErrorBase<Error<NoneType>> {
-    using Base = ErrorBase<Error<NoneType>>;
-public:
-    using Base::Base;
-    
-    Error(unsigned int code_=1) noexcept : Base(
-        code_, 
-        ErrorMessages.at(code_),
-        type,
-        NULLPTR<std::exception>
-    ) {}
-
-    Error(const std::exception& err) : Base(
-        Codes::STANDARD,
-        std::string(err.what()),
-        "std::exception",
-        nullptr
-    ) {}
-
-    Error(std::string msg_) noexcept : Base(
-        Codes::UNDEFINED, 
-        msg_,
-        type,
-        NULLPTR<std::exception>
-    ) {}
-
-    enum Codes : unsigned int {
-        STANDARD, UNDEFINED
-    };
-
-    using Base::what;
-
-    using Base::code;
-    using Base::msg;
-    using Base::trace;
-    using Base::traceIsNBError;
-    static const std::string type;
-    static const ErrorCodeMap ErrorMessages;
-};
-} // namespace nb
-
 #ifdef _NB_AUTOLOG
     #ifdef _NB_CODE_ERROR_LOCATIONS
         #ifndef LOG
@@ -303,10 +33,11 @@ public:
 
 #ifndef THROW
     #ifdef _NB_AUTOLOG
-        #define THROW(args...) ERROR(args); throw args
+        #define THROW(args...) ERROR(args); nb::logger.stop(); throw args
     #else
         #define THROW(args...) throw args
     #endif // _NB_CODE_ERROR_LOCATIONS
 #endif // THROW
+} // namespace nb
 
 #endif // _NB_ERROR

engine/NBCore/ErrorsImpl.hpp

@@ -0,0 +1,175 @@
+#pragma once
+#ifndef _NB_ERRORS_IMPL
+#define _NB_ERRORS_IMPL
+
+#include <exception>
+#include <memory>
+#include <string>
+#include <type_traits>
+#include <unordered_map>
+
+#include "StringUtils.hpp"
+#include "TypeTraits.hpp"
+
+namespace nb {
+
+typedef std::unordered_map<unsigned int, std::string> ErrorCodeMap;
+
+template <class ErrorType=NoneType>
+class Error;
+
+class ErrorBase {
+    protected:
+
+    public:
+    const unsigned int code;
+    const std::string msg;
+    const std::string type;
+    const std::shared_ptr<ErrorBase> trace;
+
+    ErrorBase(const ErrorBase&) = default;
+    ErrorBase(const std::exception&) noexcept;
+    virtual std::string what() const noexcept {
+        std::string ret = msg;
+        if (trace) {
+            std::string trace_msg = msg;
+            ret += nb::NEWLINE + indent_strblock(
+                trace_msg,
+                nb::TABOVER,
+                nb::TABOVER+"Trace: "
+            );
+        }
+        return ret;
+    }
+    
+    protected:
+    ErrorBase(
+    unsigned int code_,
+    std::string msg_,
+    std::string type_,
+    std::shared_ptr<ErrorBase> trace_
+) noexcept :
+    code(code_),
+    msg(msg_),
+    type(type_),
+    trace{trace_}
+{}
+};
+
+template <class ErrorType>
+class Error : public ErrorBase {
+    private:
+    void inline check_asserts() {
+        static_assert(std::is_same<const ErrorCodeMap, decltype(ErrorType::ErrorMessages)>::value,
+            "const std::unordered_map<unsigned int, const char*> ErrorMessages must be "
+            "a class member."
+        );
+        static_assert(std::is_enum_v<typename ErrorType::Codes>, "enum Codes must be a class member.");
+        static_assert(std::is_same<std::underlying_type_t<typename ErrorType::Codes>, unsigned int>::value,
+            "enum Codes must be of underlying type unsigned int."
+        );
+        static_assert(std::is_same<const std::string, decltype(ErrorType::type)>::value,
+            "const std::string type must be a class member."
+        );
+    }
+
+    protected:
+    using ErrorBase::ErrorBase;
+
+    public:
+    Error(
+        unsigned int code_,
+        const ErrorBase& trace_
+    ) noexcept : ErrorBase(
+        code_, 
+        ErrorType::ErrorMessages.at(code_),
+        ErrorType::type,
+        std::make_shared<ErrorBase>(trace_)
+    ) { check_asserts(); }
+
+    Error(
+        std::string msg_,
+        const ErrorBase& trace_
+    ) noexcept : ErrorBase(
+        0, 
+        msg_,
+        ErrorType::type,
+        std::make_shared<ErrorBase>(trace_)
+    ) { check_asserts(); }
+
+    Error(unsigned int code_) noexcept : ErrorBase(
+        code_, 
+        ErrorType::ErrorMessages.at(code_),
+        ErrorType::type,
+        nullptr
+    ) { check_asserts(); }
+
+    Error(std::string msg_) noexcept : ErrorBase(
+        0, 
+        msg_,
+        ErrorType::type,
+        nullptr
+    ) { check_asserts(); }
+
+    Error(
+        unsigned int code_,
+        const std::string& note_,
+        const ErrorBase& trace_
+    ) noexcept : ErrorBase(
+        code_,
+        ErrorType::ErrorMessages.at(code_) + " (" + note_ + ")",
+        ErrorType::type,
+        std::make_shared<ErrorBase>(trace_)
+    ) { check_asserts(); }
+
+    Error(unsigned int code_, const std::string& note_) noexcept : ErrorBase(
+        code_,
+        ErrorType::ErrorMessages.at(code_) + " (" + note_ + ")",
+        ErrorType::type,
+        nullptr
+    ) { check_asserts(); }
+
+    using ErrorBase::what;
+    using ErrorBase::code;
+    using ErrorBase::msg;
+    using ErrorBase::trace;
+    using ErrorBase::type;
+};
+
+
+template<>
+class Error<NoneType> : public Error<Error<NoneType>> {
+    using Base = Error<Error<NoneType>>;
+    
+    public:
+    using Base::Base;
+    
+    Error(unsigned int code_=1) noexcept : Base(code_) {}
+
+    Error(const std::exception& err) : Base(
+        Codes::STANDARD,
+        std::string(err.what()),
+        "std::exception",
+        nullptr
+    ) {}
+
+    // fix
+    Error(std::string msg_) noexcept : Base(
+        Codes::UNDEFINED, 
+        msg_
+    ) {}
+
+    enum Codes : unsigned int {
+        STANDARD, UNDEFINED
+    };
+
+    using Base::what;
+    using Base::code;
+    using Base::msg;
+    using Base::trace;
+    static const std::string type;
+    static const ErrorCodeMap ErrorMessages;
+};
+} // namespace nb
+
+#endif // _NB_ERRORS_IMPL

engine/NBCore/Logger.hpp

@@ -9,13 +9,13 @@
 #include <vector>
 
 #include "DataSink.hpp"
+#include "ErrorsImpl.hpp"
 #include "Processes.hpp"
 #include "ThreadSafeQueue.hpp"
 #include "TypeTraits.hpp"
 
 namespace nb {
 
-template <typename T>
 class ErrorBase;
 
 typedef std::chrono::time_point<
@@ -32,7 +32,8 @@ class LoggerBase
     using StreamType = ST;
     using LoggerType = Logger;
     using Base = MultithreadedDataProcessor<LogType, LoggerType>;
-public:
+
+    public:
     bool run() override {
         if (!static_cast<LoggerType*>(this)->isRunning()) {
             this->_running = true;
@@ -45,7 +46,9 @@ public:
         }
         return static_cast<LoggerType*>(this)->isRunning();
     }
-protected:
+    using Base::flush;
+
+    protected:
     LoggerBase() = default;
 
     StreamType _ostream;
@@ -73,7 +76,33 @@ public:
 
     ~DebugLogger() { static_cast<LoggerType*>(this)->stop(); }
 
+    template<typename U>
     void log(
+        U val,
+        std::string file="",
+        unsigned int line=0
+    ) { static_cast<LoggerType*>(this)->write_message(val, 0x00, file, line); }
+
+    template<typename U>
+    void warn(
+        U val,
+        uint8_t lvl=0x01,
+        std::string file="",
+        unsigned int line=0
+    ) { static_cast<LoggerType*>(this)->write_message(val, lvl, file, line); }
+
+    void error(
+        const ErrorBase& val,
+        std::string file="",
+        unsigned int line=0
+    ) {
+        static_cast<LoggerType*>(this)->write_message(val, 0xFF, file, line);
+        static_cast<LoggerType*>(this)->flush();
+    }
+
+    protected:
+    std::vector<std::ostream*> _ostream;
+    void write_message(
         std::string msg,
         uint8_t lvl=0x00,
         std::string file="",
@@ -91,56 +120,24 @@ public:
     }
 
     template <size_t N>
-    void log(
+    void write_message(
         char const(&msg) [N],
         uint8_t lvl=0x00,
         std::string file="",
         unsigned int line=0
     ) {
-        static_cast<LoggerType*>(this)->log(std::string(msg), lvl, file, line);
+        static_cast<LoggerType*>(this)->write_message(std::string(msg), lvl, file, line);
     }
 
-    template <typename T>
+    void write_message(
-    void log(
+        const ErrorBase& err,
-        const ErrorBase<T>& err,
+        uint8_t lvl=0x00,
-        uint8_t lvl=0xFF,
         std::string file="",
         unsigned int line=0
     ) {
-        static_cast<LoggerType*>(this)->log(err.what(), lvl, file, line);
+        static_cast<LoggerType*>(this)->write_message(err.what(), lvl, file, line);
     }
 
-    template <typename T>
-    std::enable_if_t<std::is_base_of_v<std::exception, T>, void> log(
-        const T& err,
-        uint8_t lvl=0xFF,
-        std::string file="",
-        unsigned int line=0
-    ) {
-        static_cast<LoggerType*>(this)->log(std::string(err.what()), lvl, file, line);
-    }
-
-    template<typename U>
-    void warn(
-        U val,
-        uint8_t lvl=0x01,
-        std::string file="",
-        unsigned int line=0
-    ) { static_cast<LoggerType*>(this)->log(val, lvl, file, line); }
-
-    template<typename U>
-    void error(
-        U val,
-        std::string file="",
-        unsigned int line=0
-    ) {
-        static_cast<LoggerType*>(this)->log(val, 0xFF, file, line);
-        static_cast<LoggerType*>(this)->flush();
-    }
-
-protected:
-    std::vector<std::ostream*> _ostream;
-
 };
 
 class DefaultDebugLogger : public DebugLogger<DefaultDebugLogger> {
@@ -150,7 +147,7 @@ class DefaultDebugLogger : public DebugLogger<DefaultDebugLogger> {
     template <typename... Ts>
     struct LogRow;
 
-public:
+    public:
     using Base::Base;
 
     ~DefaultDebugLogger() { stop(); }
@@ -166,6 +163,8 @@ protected:
     bool process(const LogEvent& msg);
 };  
 
+extern const bool LOGGER_RUNNING;
+
 #ifndef _NB_NO_LOGGER
 extern DefaultDebugLogger logger;
 #endif // _NB_NO_LOGGER

engine/NBCore/Utils.hpp

@@ -9,6 +9,12 @@
 
 namespace nb {
 
+template<typename T>
+using SharedVector = std::vector<std::shared_ptr<T>>;
+
+template<typename T>
+using RValueVector = std::vector<T&&>;
+
 using ByteVector = std::vector<uint8_t>;
 
 class ObjectManagerError : public Error<ObjectManagerError> {
@@ -25,6 +31,38 @@ class ObjectManagerError : public Error<ObjectManagerError> {
     static const ErrorCodeMap ErrorMessages;
 };
 
+template<typename T>
+ByteVector vectorToBytes(const std::vector<T>& vec) {
+    unsigned int num_bytes = vec.size() * sizeof(T);
+    ByteVector ret(num_bytes);
+    memcpy(ret.data(), vec.data(), num_bytes);
+    return ret;
+}
+
+template<typename T, typename S>
+ByteVector concatVectorBytes(const std::vector<T>& vec1, const std::vector<S>& vec2) {
+    ByteVector vec1_raw = vectorToBytes<T>(vec1);
+    ByteVector vec2_raw = vectorToBytes<S>(vec2);
+    unsigned int vec1_raw_size = vec1_raw.size();
+    unsigned int vec2_raw_size = vec2_raw.size();
+    ByteVector ret(vec1_raw_size + vec2_raw_size);
+    memcpy(ret.data(), vec1_raw.data(), vec1_raw_size);
+    memcpy(ret.data() + vec1_raw_size, vec2_raw.data(), vec2_raw_size);
+    return ret;
+}
+
+template<typename T>
+std::vector<T> bytesToVector(const ByteVector& vec) {
+    if (vec.size() % sizeof(T) != 0) {
+        THROW(std::runtime_error("Data size does not align to std::vector<" + std::string(typeid(T).name()) + ">."));
+    }
+    unsigned int num_elmts = vec.size() / sizeof(T);
+    std::vector<T> ret(num_elmts);
+    memcpy(ret.data(), vec.data(), vec.size());
+
+    return ret;
+}
+
 template <typename T>
 class ThreadsafeObjectLock;
 

engine/NBCore/src/Errors.cpp

@@ -1,13 +0,0 @@
-#include "Errors.hpp"
-#include "TypeTraits.hpp"
-
-namespace nb {
-
-const std::string Error<>::type =  "nb::Error";
-
-const ErrorCodeMap Error<nb::NoneType>::ErrorMessages = {
-    {Error::Codes::STANDARD, "std::exception"},
-    {Error::Codes::UNDEFINED, "Error"}
-};
-
-}

engine/NBCore/src/ErrorsImpl.cpp

@@ -0,0 +1,16 @@
+#include "ErrorsImpl.hpp"
+
+namespace nb {
+
+const std::string Error<>::type =  "nb::Error";
+const ErrorCodeMap Error<>::ErrorMessages = {
+    {Error::Codes::STANDARD, "std::exception"},
+    {Error::Codes::UNDEFINED, "Error"}
+};
+
+//ErrorBase::
+
+ErrorBase::ErrorBase(const std::exception& exception_) noexcept 
+: ErrorBase(Error<NoneType>(exception_)) {}
+
+}

engine/NBCore/src/Logger.cpp

@@ -33,6 +33,6 @@ static bool RUN_LOGGER(nb::DefaultDebugLogger& log) {
     return log.run();
 }
 
-static const bool LOGGER_RUNNING = RUN_LOGGER(logger);
+const bool LOGGER_RUNNING = RUN_LOGGER(logger);
 
 } // namespace nb

engine/NBGraphics/Buffers.hpp

@@ -4,362 +4,238 @@
 
 #include "GLLoad.hpp"
 
+#include <memory>
 #include <string>
-#include <vector>
 
 #include <NBCore/Errors.hpp>
-#include <NBCore/Types.hpp>
+#include <NBCore/Logger.hpp>
+#include <NBCore/Utils.hpp>
+
+#include "OGLObjects.hpp"
 
 namespace nb {
 
-typedef std::vector<unsigned char> RawVec;
+extern const std::unordered_map<GLenum, std::string> BufferTypes;
 
-static uint8_t GLSLTypeSize(GLenum type) {
+class BufferError : public Error<BufferError> {
-    switch(type) {
+    protected:
-    case GL_SHORT:
+    using Base = Error<BufferError>;
-    case GL_UNSIGNED_SHORT:
-    case GL_HALF_FLOAT:
-        return 2;
-        break;
-    case GL_INT:
-    case GL_UNSIGNED_INT:
-    case GL_FLOAT:
-        return 4;
-        break;
-    case GL_DOUBLE:
-        return 8;
-        break;
-    default:
-        return 1;
-        break;
-    }
-}
-
-struct VertexAttributePointer {
-    GLuint buffer = 0;
-    int32_t offset = 0;
-    GLsizei stride = -1;
-    GLuint divisor = 0;
-};
-
-struct VertexAttribute {
-    GLint GLSLSize;
-    GLenum GLSLType;
-    GLboolean GLSLNormalization;
-    VertexAttributePointer ptr;
-};
-
-static bool isIndexInVertexAttribute(int i, const VertexAttribute& va) {
-    if ((i -= va.ptr.offset) < 0) { return false; }
-    return (i%va.ptr.stride) < GLSLTypeSize(va.GLSLType) * va.GLSLSize;
-}
-
-typedef std::vector<VertexAttribute> VertexAttributeList;
-
-template<typename T>
-RawVec vectorToRaw(const std::vector<T>& vec) {
-    unsigned int num_bytes = vec.size() * sizeof(T);
-    RawVec ret(num_bytes);
-    memcpy(ret.data(), vec.data(), num_bytes);
-    return ret;
-}
-
-template<typename T, typename S>
-RawVec concatVectorsToRaw(const std::vector<T>& vec1, const std::vector<S>& vec2) {
-    RawVec vec1_raw = vectorToRaw<T>(vec1);
-    RawVec vec2_raw = vectorToRaw<S>(vec2);
-    unsigned int vec1_raw_size = vec1_raw.size();
-    unsigned int vec2_raw_size = vec2_raw.size();
-    RawVec ret(vec1_raw_size + vec2_raw_size);
-    memcpy(ret.data(), vec1_raw.data(), vec1_raw_size);
-    memcpy(ret.data() + vec1_raw_size, vec2_raw.data(), vec2_raw_size);
-    return ret;
-}
-
-template<typename T>
-std::vector<T> rawToVector(const RawVec& vec) {
-    if (vec.size() % sizeof(T) != 0) {
-        throw std::runtime_error("Data size does not align to std::vector<" + std::string(typeid(T).name()) + ">.");
-    }
-    unsigned int num_elmts = vec.size() / sizeof(T);
-    std::vector<T> ret(num_elmts);
-    memcpy(ret.data(), vec.data(), vec.size());
-
-    return ret;
-}
-
-class BufferError : public std::runtime_error {
-public:
-    const bool error;
-    BufferError(const std::string& msg, const std::string& file="", int line=-1) 
-        : std::runtime_error(NB::formatDebugString(msg, file, line)), error(true) {}
-    BufferError(bool isError=true) : std::runtime_error(""), error(isError) {}
-};
-
-
-template <typename ObjectType>
-class OpenGLObject {
-public:
-    OpenGLObject(OpenGLObject&&) = default;
-    OpenGLObject& operator=(OpenGLObject&&) = default;
-    ~OpenGLObject() { remove(); }
-    
-    virtual void bind() const = 0;
-    virtual void unbind() const = 0;
-    virtual bool isInitialized() const = 0;
-    GLuint id() const { return _id; }
-
-protected:
-    OpenGLObject() = default;
-    OpenGLObject(const OpenGLObject&) = delete;
-    OpenGLObject& operator=(const OpenGLObject&) = delete;
-
-    virtual void remove() const = 0;
-
-    GLuint _id;
-};
-
-class VAO : public virtual OpenGLObject<VAO> {
-public:
-    using Base = OpenGLObject<VAO>;
     using Base::Base;
 
-    VAO() { glGenVertexArrays(1, &_id); }
+    public:
-
+    enum Codes : unsigned int {
-    void bind() const { glBindVertexArray(_id); }
+        UNDEFINED,
-    void unbind() const { glBindVertexArray(0); }
+        DATA_OVERFLOW,
-
+        INVALID_BUFFER,
-
+        HANDLE_OVERWRITE,
-protected:
+    };
-    using Base::_id;
+    static const std::string type;
-    const 
+    static const ErrorCodeMap ErrorMessages;
-
-    void remove() { glDeleteVertexArrays(1, &_id); }
-
 };
 
 template <typename BufferType>
-class Buffer : public virtual OpenGLObject<Buffer<BufferType>> {
+class Buffer : public OpenGLObject {
-public:
+    using Codes = BufferError::Codes;
-    using Base = OpenGLObject<Buffer>;
-    using Base::Base;
     
-    Buffer(GLenum usage_ = GL_STATIC_DRAW) : usage(usage_) { glGenBuffers(1,  &_id); }
+    public:
+    using OpenGLObject::OpenGLObject;
+    Buffer() = default;
+    Buffer(Buffer&& other) {
+        *this = std::move(other);
+    }
+    Buffer& operator=(Buffer&& rhs) {
+        auto targ_name = BufferTypes.at(Target);
+        if (Target != rhs.Target) {
+            THROW(BufferError(
+                Codes::INVALID_BUFFER,
+                "w/ ("+targ_name+") := ("+BufferTypes.at(rhs.Target)+")"
+            ));
+        }
+        //nb::logger.log(std::to_string(_id) + ":=" + std::to_string(rhs._id));
+        if (_id) {
+            THROW(BufferError(
+                Codes::HANDLE_OVERWRITE,
+                "w/ BufferType = " + targ_name
+            ));
+        }
+        _id = rhs._id;
+        _usage = rhs._usage;
+        _size = rhs._size;
 
-    void bind() const { glBindBuffer(GLTarget, _id); }
+        rhs._id = 0;
-    void unbind() const { glBindBuffer(GLTarget, 0); }
+        rhs._usage = GL_STATIC_DRAW;
-    void data(void* data_, size_t size) const { glBufferData(GLTarget, size, data_, usage); }
+        rhs._size = 0;
-    void data(nb::ByteVector& data_) const { glBufferData(GLTarget, data_.size(), data_.data(), usage); }
+        return *this;
-    void invalidate() const { glInvalidateBufferData(_id); }
+    }
 
+    virtual void bind() const override {
+        if (_id) {
+            glBindBuffer(Target, _id);
+        } else {
+            THROW(BufferError(
+                Codes::INVALID_BUFFER,
+                "w/ BufferType " + BufferTypes.at(Target)
+            ));
+        }
+    }
+    virtual void unbind() const override { glBindBuffer(Target, 0); }
+    virtual GLenum usage() const { return _usage; }
+    virtual GLenum usage(GLenum usage_) {
+        _usage = usage_;
+        data(data(), _usage);
+        return _usage;
+    }
+    virtual size_t size() const { return _size; }
+    virtual ByteVector data() const {
+        bind();
+        ByteVector ret(_size);
+        glGetBufferSubData(Target, 0, _size, ret.data());
+        return ret;
+    }
+    virtual void data(
+        const void* data_,
+        GLsizei size_,
+        GLenum usage_=GL_STATIC_DRAW
+    ) {
+        declare();
+        bind();
+        glBufferData(Target, size_, data_, usage_);
+        _size = size_;
+        _usage = usage_;
+    }
+    virtual void data(const ByteVector& data_, GLenum usage_=GL_STATIC_DRAW) {
+        data(data_.data(), data_.size(), usage_);
 
-    const GLenum GLTarget = BufferType::GLTarget;
+    }
-    GLenum usage;
+    virtual void subdata(void* data_, GLsizeiptr size_, GLintptr offset_=0) {
+        bind();
+        if (offset_+size_ <= _size) {
+            THROW(BufferError(BufferError::Codes::DATA_OVERFLOW));
+        }
+        glBufferSubData(Target, offset_, size_, data_);
+    }
+    virtual void subdata(ByteVector& data_, GLintptr offset_=0) {
+        bind();
+        size_t size_ = data_.size();
+        if (offset_+size_ <= _size) {
+            THROW(BufferError(BufferError::Codes::DATA_OVERFLOW));
+        }
+        glBufferSubData(Target, offset_, data_.size(), data_.data());
+    }
+    // virtual void clear() const { glClearBufferData(Target, ) }
+    static const GLenum Target;
+
+    protected:
+    using OpenGLObject::_id;
+    GLenum _usage = GL_STATIC_DRAW;
+    size_t _size;
+    virtual GLuint declare() override {
+        if (!_id) {
+            glGenBuffers(1, &_id);
+        }
+        return _id;
+    } 
+    virtual void remove() override {
+        if (_id) {
+            glDeleteBuffers(1, &_id);
+            _id = 0;
+        }
+    }
+
+};
+
+template<typename BufferType>
+const GLenum Buffer<BufferType>::Target = BufferType::Target;
+
+template <typename BufferType>
+class ImmutableBuffer : public virtual Buffer<BufferType> {
+    public:
+    using Base = Buffer<BufferType>;
+    using Base::Target;
+    using Base::bind;
+
+    ImmutableBuffer() = default;
+    ImmutableBuffer(size_t size_, GLenum usage_ = GL_STATIC_DRAW, GLbitfield flags_=0x0) : size(size_), Base::usage(usage_) {
+        glBufferStorage(Target, size, nullptr, flags_);
+    }
+
+    std::weak_ptr<void> map(GLbitfield access_) {
+        if (_map && _mapAccess != access_) { unmap(); }
+        _mapAccess = access_;
+        if (!_map) {
+            bind();
+            glMapBuffer(Target, _mapAccess);
+        }
+        return _map;
+    }
+    void unmap() {
+        bind();
+        glUnmapBuffer(Target);
+        _map.reset();
+    }
+    
+    const size_t size;
 
 protected:
     using Base::_id;
-    void remove() { glDeleteBuffers(1, &_id); }
+    std::shared_ptr<void> _map = nullptr;
+    GLbitfield _mapAccess = 0;
 
 };
 
-class VertexBuffer : public virtual Buffer<VertexBuffer> {
+template<bool Immutable=false>
-public:
+class ArrayBuffer : public Buffer<ArrayBuffer<false>> {
+    using Base = Buffer<ArrayBuffer<false>>;
+    using BufferType = Base;
 
-    static const GLenum GLTarget = GL_ARRAY_BUFFER;
+    public:
-protected:
+    using Base::Base;
+    using Base::data;
+    ArrayBuffer(const ByteVector&, GLenum usage_=GL_STATIC_DRAW);
+
+    static const GLenum Target = GL_ARRAY_BUFFER;
+
+    protected:
+    using Base::_usage;
+};
+
+template <>
+class ArrayBuffer<true> 
+: public virtual ArrayBuffer<false>, public virtual ImmutableBuffer<ArrayBuffer<true>> {
+    using Base = ArrayBuffer<false>;
+    using BufferType = ImmutableBuffer<ArrayBuffer<true>>;
+    using BufferType::BufferType;
+
+
+    public:
+    using Base::Target;
 
 };
 
-class ElementBuffer : public virtual Buffer<ElementBuffer> {
+template<bool Immutable=false>
-public:
+class ElementBuffer : public Buffer<ElementBuffer<false>> {
+    using Base = Buffer<ElementBuffer<false>>;
+    using BufferType = Base;
     
-    static const GLenum GLTarget = GL_ELEMENT_ARRAY_BUFFER;
+    public:
+    using Base::Base;
+    static const GLenum Target = GL_ELEMENT_ARRAY_BUFFER;
 
-protected:
+    protected:
 
 };
 
-/*
+template <>
-class Buffer : public OpenGLObject {
+class ElementBuffer<true> 
-public:
+: public virtual ElementBuffer<false>, public virtual ImmutableBuffer<ElementBuffer<true>> {
-    Buffer(
+    using Base = ElementBuffer<false>;
-        GLenum buffer_type,
+    using BufferType = ImmutableBuffer<ElementBuffer<true>>;
-        GLenum usage=GL_STATIC_DRAW
-    ) : _type(buffer_type), _usage(usage) {
-            glGenBuffers(1, &_id);
-    }
-    Buffer(
-        const RawVec& init_data,
-        GLenum buffer_type,
-        GLenum usage=GL_STATIC_DRAW
-    ) : _type{buffer_type}, _usage{usage} { data(init_data); }
-    Buffer(
-        unsigned int size,
-        GLenum buffer_type,
-        GLenum usage=GL_STATIC_DRAW
-    ) : Buffer(RawVec(size), buffer_type, usage) {}
 
-    Buffer(Buffer&& rhs) { *this = std::move(rhs); }
+    public:
-    Buffer& operator=(Buffer&& rhs) {
+    using BufferType::BufferType;
-        remove();
+    using Base::Target;
-        _usage = rhs._usage;
-        _id = rhs._id;
-        rhs._id = 0;
-        return *this;
-    }
-
-    GLenum usage() const { return _usage; }
-    unsigned int id() const { return _id; }
-    GLuint size() const { return _size; }
-    bool isInitialized() const override { return _id && glIsBuffer(_id) && bool(_size); }
-    RawVec data() const {
-        RawVec ret(_size);
-        bind();
-        glGetBufferSubData(_type, 0, _size, ret.data());
-        return ret;
-    }
-    void bind() const override { glBindBuffer(_type, _id); }
-    void unbind() const override { glBindBuffer(_type, 0); }
-
-    GLenum usage(GLenum usage) {
-        _usage=usage;
-        data(data());
-        return _usage;
-    }
-    void data(const RawVec& set_data) {
-        if (!glfwGetCurrentContext()) {
-            THROW_BUFFER_ERROR("No OpenGL context.");
-        }
-        bind();
-        glBufferData(_type, set_data.size(), set_data.data(), _usage);
-        _size = set_data.size();
-    }
-    void data(const RawVec& newData, unsigned int offset) {
-        if (newData.size()+offset > _size) {
-            THROW_BUFFER_ERROR("Attempting to overflow buffer of capacity " + std::to_string(_size) + ".");
-        }
-        bind();
-        glBufferSubData(_type, offset, newData.size(), newData.data());
-    }
-    void data(void* src, unsigned int offset, unsigned int size) {
-        if (size+offset > _size) {
-            THROW_BUFFER_ERROR("Attempting to overflow buffer of capacity " + std::to_string(_size) + ".");
-        }
-        bind();
-        glBufferSubData(_type, offset, size, src);
-    }
-
-protected:
-    virtual void remove() const override {
-        unbind();
-        if (_id) { glDeleteBuffers(1, &_id); }
-    }
-
-    using OpenGLObject::_id;
-    GLenum _type;
-    GLenum _usage;
-    unsigned int _size = 0;
-};
-
-
-class Texture : public OpenGLObject {
-public:
-    Texture(GLenum tar=GL_TEXTURE_2D) : _target(tar) { glGenTextures(1, &_id); }
-
-    Texture(Texture&& rhs) { *this=std::move(rhs); }
-    Texture& operator=(Texture&& rhs) {
-        _target = rhs._target;
-        _id = rhs._id;
-        rhs._id = 0;
-        return *this;
-    }
-
-    void bind() const override { glBindTexture(_target, _id); }
-    void unbind() const override { glBindTexture(_target, 0); }
-    bool isInitialized() const override { return _id && glIsTexture(_id); }
-
-protected:
-    using OpenGLObject::_id;
-    GLenum _target;
-};
-
-class Framebuffer : public OpenGLObject {
-public:
-
-    Framebuffer(GLenum tar=GL_FRAMEBUFFER) : _target(tar) { glGenFramebuffers(1, &_id); }
-
-    Framebuffer(Framebuffer&& rhs) { *this=std::move(rhs); }
-    Framebuffer& operator=(Framebuffer&& rhs) {
-        remove();
-        _target = rhs._target;
-        _id = rhs._id;
-        rhs._id = 0;
-        return *this;
-    }
-
-    void bind() const override { glBindFramebuffer(_target, _id); }
-    void unbind() const override { glBindFramebuffer(_target, 0); }
-    bool isInitialized() const override { return _id && glIsFramebuffer(_id); }
-    GLenum status() const {
-        bind();
-        return glCheckFramebufferStatus(_target);
-    }
-
-
-protected:
-    virtual void remove() const override {
-        unbind();
-        if (_id) { glDeleteFramebuffers(1, &_id); }
-    }
-    using OpenGLObject::_id;
-    GLenum _target;
-};
-
-class Renderbuffer : public OpenGLObject {
-public:
-    Renderbuffer(unsigned int x, unsigned int y, GLenum format=GL_RGBA32F, unsigned int multi=0) : Renderbuffer() {
-        storage(x, y, format, multi);
-    }
-    Renderbuffer() { glGenRenderbuffers(1, &_id); }
-
-
-    Renderbuffer(Renderbuffer&& rhs) { *this = std::move(rhs); }
-    Renderbuffer& operator=(Renderbuffer&& rhs) {
-        _format = rhs._format;
-        _id = rhs._id;
-        rhs._id = 0;
-        return *this;
-    }
-
-    virtual void bind() const override { glBindRenderbuffer(GL_RENDERBUFFER, _id); }
-    virtual void unbind() const override { glBindRenderbuffer(GL_RENDERBUFFER, _id); }
-    virtual bool isInitialized() const override { return _id && glIsRenderbuffer(_id); }
-
-    void storage(unsigned int x, unsigned int y, GLenum format=GL_RGBA32F, unsigned int multi=0) {
-        _sizex = x;
-        _sizey = y;
-        _format = format;
-        _multisample = multi;
-        bind();
-        glRenderbufferStorageMultisample(GL_RENDERBUFFER, _multisample, _format, _sizex, _sizey);
-    }
-
-
-protected:
-    virtual void remove() const override {
-        unbind();
-        if (_id) { glDeleteRenderbuffers(1, &_id); }
-    }
-
-    using OpenGLObject::_id;
-    GLenum _format;
-    unsigned int _sizex{0};
-    unsigned int _sizey{0};
-    unsigned int _multisample{0};
 
 };
 
-*/
-
 } // namespace NB
 #endif // _NB_BUFFER

engine/NBGraphics/CMakeLists.txt

@@ -1,5 +1,3 @@
-include_directories(./.)
-
 find_package(OpenGL)
 add_subdirectory(${GLFW_PATH} ${GLFW_PATH}/build)
 
@@ -10,8 +8,12 @@ set(GLFW_BUILD_TESTS OFF CACHE BOOL "" FORCE)
 set(GLFW_BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)
 
 toAbsolutePath(NB_GRAPHICS_SOURCE
-    ./src/Window.cpp
     ./src/Buffers.cpp
+    ./src/OGLObjects.cpp
+    ./src/ProgramPipeline.cpp
+    ./src/Textures.cpp
+    ./src/VertexArray.cpp
+    ./src/Window.cpp
 )
 
 toAbsolutePath(NB_GRAPHICS_INCLUDE
@@ -19,8 +21,10 @@ toAbsolutePath(NB_GRAPHICS_INCLUDE
     ./Camera.hpp
     ./Draw.hpp
     ./GLLoad.hpp
-    ./shader.hpp
+    ./OGLObjects.hpp
-    ./VAOManager.hpp
+    ./ProgramPipeline.hpp
+    ./Textures.hpp
+    ./VertexArray.hpp
     ./Window.hpp
 )
 
@@ -31,4 +35,11 @@ add_library(NBGraphics
     ${NB_GRAPHICS_SOURCE}
     ${GLAD_PATH}/src/glad.c
 )
-target_link_libraries(NBGraphics glfw3)
+target_link_libraries(NBGraphics glfw)
+
+target_include_directories(NBGraphics PUBLIC ./.)
+
+if (NB_BUILD_TESTS)
+    add_subdirectory(./tests)
+endif()
+

engine/NBGraphics/Camera.hpp

@@ -2,13 +2,14 @@
 #ifndef _NB_CAMERA
 #define _NB_CAMERA
 
-#include <GLLoad.h>
+#include "GLLoad.hpp"
+
 #include <glm/glm.hpp>
 #include <glm/gtc/matrix_inverse.hpp>
 #include <glm/gtc/matrix_transform.hpp>
 #include <glm/gtc/type_ptr.hpp>
 
-namespace NB {
+namespace nb {
 
 class Camera {
 public:

engine/NBGraphics/GLLoad.hpp

@@ -5,31 +5,4 @@
 #include <glad/glad.h>
 #include <GLFW/glfw3.h>
 
-#include <iostream>
-#include <string>
-
-namespace NB {
-
-static unsigned int __NB_GL_DEBUG_ERROR_CODE__;
-
-static std::string formatDebugString(const std::string& msg, const std::string& file="", int line=-1) {
-    std::string ret = "";
-    if (file != "") {
-        ret += "In file " + file;
-        if (line >= 0) {
-            ret += " at line " + std::to_string(line);
-        }
-        ret += ":\n\t";
-    }
-    return ret + msg;
-}
-
-}
-
-#define NB_GL_DEBUG_THROW(cmd, when) while(NB::__NB_GL_DEBUG_ERROR_CODE__=glGetError()){\
-    std::cout << "[GL ERROR]: " << NB::__NB_GL_DEBUG_ERROR_CODE__;\
-    std::cout << " " << when << " " << cmd << "\n";\
-} 
-#define NB_GL_DEBUG(cmd) NB_GL_DEBUG_THROW(#cmd, "before"); cmd; NB_GL_DEBUG_THROW(#cmd, "after");
-
 #endif

engine/NBGraphics/OGLObjects.hpp

@@ -0,0 +1,45 @@
+#pragma once
+#ifndef _NB_OGL_OBJECTS
+#define _NB_OGL_OBJECTS
+
+#include "GLLoad.hpp"
+
+#include <NBCore/Errors.hpp>
+
+namespace nb {
+
+class OGLError : public Error<OGLError> {
+    using Base = Error<OGLError>;
+    
+    public:
+    using Base::Base;
+
+    enum Codes : unsigned int {
+        UNDEFINED, HANGING_OBJECT
+    };
+
+    static const std::string type;
+    static const ErrorCodeMap ErrorMessages;
+};
+
+class OpenGLObject {
+    public:
+    OpenGLObject(const OpenGLObject&) = delete;
+    OpenGLObject& operator=(const OpenGLObject&) = delete;
+    virtual ~OpenGLObject() {};
+    
+    virtual void bind() const = 0;
+    virtual void unbind() const = 0;
+    GLuint id() const { return _id; }
+    
+    protected:
+    OpenGLObject() = default;
+    
+    virtual GLuint declare() = 0;
+    virtual void remove() = 0;
+
+    GLuint _id = 0;
+};
+
+} // namespace nb
+#endif // _NB_OGL_OBJECTS

engine/NBGraphics/ProgramPipeline.hpp

@@ -0,0 +1,123 @@
+#pragma once
+#ifndef _NB_SHADER
+#define _NB_SHADER
+
+#include "GLLoad.hpp"
+
+#include <string>
+
+#include <NBCore/Errors.hpp>
+#include <NBCore/Utils.hpp>
+
+#include "OGLObjects.hpp"
+
+namespace nb {
+
+class ShaderError : public Error<ShaderError> {
+    using Base = Error<ShaderError>;
+
+    public:
+    using Base::Base;
+
+    enum Codes : unsigned int {
+        UNDEFINED
+    };
+
+    static const std::string type;
+    static const ErrorCodeMap ErrorMessages;
+};
+
+class ProgramError : public Error<ProgramError> {
+    using Base = Error<ProgramError>;
+
+    public:
+    using Base::Base;
+
+    enum Codes : unsigned int {
+        UNDEFINED, LINKING_ERROR
+    };
+
+    static const std::string type;
+    static const ErrorCodeMap ErrorMessages;
+};
+
+enum OpenGLProfiles {
+    Core,
+    Compatibility,
+    ES
+};
+
+class Shader : public OpenGLObject {
+    using Base = OpenGLObject;
+    
+    public:
+    using Base::Base;
+    using Base::id;
+    Shader(GLenum, const std::string&);
+    Shader(Shader&&);
+    Shader& operator=(Shader&&) = delete;
+    ~Shader() { remove(); }
+    operator bool();
+    virtual void bind() const override { /* TODO: Some warning of some kind perhaps*/ }
+    virtual void unbind() const override { /* TODO: Some warning of some kind perhaps*/ }
+    GLint status(GLenum) const;
+    std::string log() const;
+    const GLenum target;
+    friend Base;
+
+    protected:
+    using Base::_id;
+    GLint _success;
+    virtual GLuint declare() override {
+        if (!_id) {
+            _id = _id = glCreateShader(target);
+        }
+        return _id;
+    }
+
+    virtual void remove() override {
+        if (_id) {
+            glDeleteShader(_id);
+        }
+    }
+
+};
+
+class Program : public OpenGLObject {
+    using Base = OpenGLObject;
+    
+    public:
+    using Base::Base;
+    using Base::id;
+    Program(SharedVector<Shader>);
+    Program(Program&&);
+    Program& operator=(Program&&) = delete;
+    operator bool();
+    ~Program() { remove(); }
+    virtual void bind() const override {
+        glUseProgram(_id);
+    }
+    virtual void unbind() const override { /* TODO: Some warning of some kind perhaps*/ }
+    GLint status(GLenum) const;
+    std::string log() const;
+    friend Base;
+
+    protected:
+    using Base::_id;
+    GLint _success;
+    virtual GLuint declare() override {
+        if (!_id) {
+            _id = glCreateProgram();
+        }
+        return _id;
+    } 
+    virtual void remove() override {
+        if (_id) {
+            glDeleteProgram(_id);
+        }
+    }
+
+};
+
+}
+#endif

engine/NBGraphics/Textures.hpp

@@ -0,0 +1,61 @@
+#pragma once
+#ifndef _NB_TEXTURES
+#define _NB_TEXTURES
+
+#include "Buffers.hpp"
+#include "OGLObjects.hpp"
+
+namespace nb {
+
+template<bool Immutable=false>
+class TextureBuffer : public virtual Buffer<TextureBuffer<false>> {
+    using Base = Buffer<TextureBuffer<false>>;
+    using BufferType = Base;
+
+    public:
+    using Base::Base;
+    static const GLenum Target = GL_TEXTURE_BUFFER;
+
+    protected:
+
+};
+
+template <>
+class TextureBuffer<true> 
+: public virtual TextureBuffer<false>, public virtual ImmutableBuffer<TextureBuffer<true>> {
+    using Base = TextureBuffer<false>;
+    using BufferType = ImmutableBuffer<TextureBuffer<true>>;
+    
+    public:
+    using BufferType::BufferType;
+    using Base::Target;
+};
+
+class Texture : public OpenGLObject {
+    using Base = OpenGLObject;
+public:
+    using Base::Base;
+    using Base::id;
+
+    Texture(GLenum);
+
+    virtual void bind() const override { glBindTexture(target, _id); }
+    virtual void unbind() const override { glBindTexture(target, 0); }
+
+    const GLenum target;
+
+    friend Base;
+
+    protected:
+    using Base::_id;
+
+    virtual void remove() override {
+        if (_id) {
+            glDeleteTextures(0, &_id);
+        }
+    }
+
+};
+
+} // namespace nb
+#endif // _NB_TEXTURES

engine/NBGraphics/VAOManager.hpp

@@ -1,75 +0,0 @@
-#pragma once
-#ifndef _NB_VAO_MANAGER
-#define _NB_VAO_MANAGER
-
-#include <GLLoad.h>
-
-#include <exception>
-#include <memory>
-#include <vector>
-
-#include "Buffers.h"
-
-#define THROW_VAO_ERROR(msg) throw VAOError(msg, __FILE__, __LINE__);
-
-namespace NB {
-
-class VAOError : public std::runtime_error {
-public:
-    const bool error;
-    VAOError(const std::string& msg, const std::string& file="", int line=-1) 
-        : std::runtime_error(NB::formatDebugString(msg, file, line)), error(true) {}
-    VAOError(bool isError=true) : std::runtime_error(""), error(isError) {}
-};
-
-class VAOManager : public OpenGLObject {
-public:
-    typedef std::shared_ptr<Buffer> BufferManagerPointer;
-    //typedef BufferManager BufferManagerPointer;
-
-    VAOManager();
-    VAOManager(
-        std::vector<BufferManagerPointer>,
-        BufferManagerPointer elmt_buf = nullptr,
-        const VertexAttributeList& vert_attrs = {}
-    );
-    VAOManager(
-        BufferManagerPointer vert_bufs,
-        BufferManagerPointer elmt_buf = nullptr,
-        const VertexAttributeList& vert_attrs = {}
-    ) : VAOManager(std::vector<BufferManagerPointer>(1, vert_bufs), elmt_buf, vert_attrs) {}
-
-    VAOManager(VAOManager&& rhs);
-    VAOManager& operator=(VAOManager&& rhs);
-
-    VertexAttributeList getLayout() const;
-    GLuint id() const;
-    unsigned int vertSize(GLuint) const;
-    std::vector<BufferManagerPointer> getVertexBuffers() const;
-    bool isInitialized() const override;
-    RawVec attributeData(unsigned int);
-
-    RawVec attributeData(unsigned int, const RawVec&);
-    void bind() const;
-    void unbind() const;
-    void addVBO(BufferManagerPointer);
-    void changeEBO(BufferManagerPointer);
-    VertexAttributeList addVertexAttributes(const VertexAttributeList&);
-    VertexAttributeList addVertexAttributes(VertexAttribute);
-    VertexAttributeList generate();
-    VertexAttributeList generate(VertexAttributeList);
-    VertexAttributeList changeLayout(unsigned int, VertexAttributePointer);
-
-    VAOError checkValid(const VertexAttributeList&);
-
-private:
-    void remove() const override;
-
-    using OpenGLObject::_id;
-    std::map<GLuint, BufferManagerPointer> _vert_buffers;
-    BufferManagerPointer _elmt_buffer = nullptr;
-    VertexAttributeList _vert_attrs;
-};
-
-} // namespace NB
-#endif // _NB_VAO_MANAGER

engine/NBGraphics/VertexArray.hpp

@@ -0,0 +1,177 @@
+#pragma once
+#ifndef _NB_VERTEX_ARRAY
+#define _NB_VERTEX_ARRAY
+
+#include "GLLoad.hpp"
+
+#include <NBCore/Errors.hpp>
+
+#include "Buffers.hpp"
+#include "OGLObjects.hpp"
+
+
+namespace nb {
+
+static uint8_t GLSLTypeSize(GLenum type) {
+    switch(type) {
+    case GL_SHORT:
+    case GL_UNSIGNED_SHORT:
+    case GL_HALF_FLOAT:
+        return 2;
+        break;
+    case GL_INT:
+    case GL_UNSIGNED_INT:
+    case GL_FLOAT:
+        return 4;
+        break;
+    case GL_DOUBLE:
+        return 8;
+        break;
+    default:
+        return 1;
+        break;
+    }
+}
+
+struct VertexAttributeLayout {
+    int32_t offset = 0;
+    GLsizei stride = 0;
+    GLuint divisor = 0;
+};
+
+struct VertexAttribute {
+    GLint GLSLSize;
+    GLenum GLSLType;
+    GLboolean GLSLNormalization;
+    VertexAttributeLayout layout;
+};
+
+struct VertexAttributePointer {
+    VertexAttribute attribute;
+    GLuint buffer;
+    GLuint index;
+};
+
+static bool isIndexInVertexAttribute(int i, const VertexAttribute& va) {
+    if ((i -= va.layout.offset) < 0) { return false; }
+    return (i%va.layout.stride) < GLSLTypeSize(va.GLSLType) * va.GLSLSize;
+}
+
+typedef std::vector<VertexAttribute> VertexAttributeList;
+typedef std::vector<VertexAttributePointer> VertexAttributePointerList;
+
+class VAOError : public Error<VAOError> {
+    using Base = Error<VAOError>;
+    
+    public:
+    using Base::Base;
+    
+    enum Codes : unsigned int {
+        UNDEFINED, INVALID_ATTRIBUTE, INVALID_VAO
+    };
+
+    static const std::string type;
+    static const ErrorCodeMap ErrorMessages;
+};
+
+class VAO : public OpenGLObject {
+    using Base = OpenGLObject;
+    using Codes = VAOError::Codes;
+
+    public:
+    using Base::Base;
+    VAO() = default;
+    VAO(const VertexAttributePointerList&);
+    VAO(VAO&&);
+
+    VAO& operator=(VAO&&);
+
+    virtual void bind() const override {
+        if(_id) {
+            glBindVertexArray(_id);
+        } else {
+            THROW(VAOError(Codes::INVALID_VAO));
+        }
+    }
+    virtual void unbind() const override { glBindVertexArray(0); }
+
+    VertexAttributePointerList attributes() const;
+    VertexAttributePointerList attributes(const VertexAttributePointerList&);
+    VertexAttributePointer attr(GLuint) const;
+    void enable() const;
+    void enable(GLuint) const;
+    void disable() const;
+    void disable(GLuint) const;
+
+    protected:
+    using Base::_id;
+    VertexAttributePointerList _attrs;
+
+    virtual void remove() override {
+        if(_id) {
+            disable();
+            bind();
+            glDeleteVertexArrays(1, &_id);
+            _id = 0;
+        }
+    }
+    virtual GLuint declare() override {
+        if (!_id) {
+            glGenVertexArrays(1, &_id);
+        }
+        return _id;
+    }
+
+};
+
+using VBO = ArrayBuffer<false>;
+using VertBufVec = SharedVector<VBO>;
+using EBO = ElementBuffer<false>;
+
+struct VertexData {
+    std::shared_ptr<VBO> vbo;
+    VertexAttributeList attrs;
+};
+
+using VertexDataVec = std::vector<VertexData>;
+
+class VertexGroup {
+    public:
+    VertexGroup(VertexGroup&&);
+    VertexGroup& operator=(VertexGroup&&);
+    
+    VertexGroup(const VertexData&);
+    VertexGroup(const VertexDataVec&);
+    VertexGroup(const ByteVector&, const VertexAttributeList&);
+
+    void bind() const {
+        _ebo->bind();
+        _vao->bind();
+    }
+    void unbind() const {
+        _vao->unbind();
+        _ebo->unbind();
+    }
+
+    VertexDataVec getBuffers();
+    VertexData getBuffers(size_t);
+    size_t setBuffers(const VertexDataVec&);
+    size_t addBuffer(const VertexData&);
+    VertexData dropBuffer(size_t);
+
+    VertexAttributePointer attribute(size_t) const;
+    void enableAttr(GLuint);
+    void disableAttr(GLuint);
+    void enableBuffer(size_t);
+    void disableBuffer(size_t);
+    void enable();
+    void disable();
+
+    protected:
+    VertexDataVec _vertex_data;
+    std::shared_ptr<EBO> _ebo;
+    std::shared_ptr<VAO> _vao;
+};
+
+} // namespace nb
+#endif // _NB_VERTEX_ARRAY

engine/NBGraphics/Window.hpp

@@ -4,22 +4,42 @@
 
 #include "GLLoad.hpp"
 
-#include <atomic>
 #include <array>
 #include <map>
 #include <stdexcept>
 #include <string>
 
+#include <NBCore/Errors.hpp>
+#include <NBCore/Utils.hpp>
+
 namespace nb {
 
-class GLError : public std::runtime_error {
+class OpenGLError : public Error<OpenGLError> {
-public:
+    using Base = Error<OpenGLError>;
-    GLError(const std::string&);
+
+    public:
+    using Base::Base;
+
+    enum Codes : unsigned int {
+        UNDEFINED, INIT_FAILED, GLFW_INTIALIZED, GLAD_FAILED
+    };
+
+    static const std::string type;
+    static const ErrorCodeMap ErrorMessages;
 };
 
-class WindowError : public std::runtime_error {
+class WindowError : public Error<WindowError> {
-public:
+    using Base = Error<WindowError>;
-    WindowError(const std::string&);
+
+    public:
+    using Base::Base;
+
+    enum Codes : unsigned int {
+        UNDEFINED, INITIALIZED_WINDOW, NO_GLFW, INIT_FAILED
+    };
+
+    static const std::string type;
+    static const ErrorCodeMap ErrorMessages;
 };
 
 class Window {

engine/NBGraphics/shader.hpp

@@ -1,193 +0,0 @@
-#pragma once
-#ifndef _NB_SHADER
-#define _NB_SHADER
-
-#include <GLLoad.h>
-
-#include <cctype>
-#include <cstring>
-#include <exception>
-#include <fstream>
-#include <iostream>
-#include <map>
-#include <regex>
-#include <sstream>
-#include <string>
-#include <utility>
-#include <vector>
-
-#include <glm/glm.hpp>
-#include <glm/gtc/matrix_transform.hpp>
-#include <glm/gtc/type_ptr.hpp>
-
-// #define _PREPROC_FUNC_PARAMS_ (const ShaderPreprocessor&, ShaderUnit&, unsigned int, const std::string&, std::vector<uint8_t>&)
-
-namespace NB {
-
-class ShaderPreprocessorError : public std::runtime_error {
-public:
-    enum Codes : unsigned char {
-        NONE,
-        FILE_NOT_FOUND,
-        BUILTIN_NOT_FOUND,
-        CUSTOM,
-        UNDEFINED
-    };
-
-    const Codes code;
-
-    ShaderPreprocessorError(const std::string&, const std::string& file="", int line=-1);
-    ShaderPreprocessorError(Codes, const std::string& arg="", const std::string& file="", int line=-1);
-
-protected:
-    static std::string errorCodeParser(Codes, const std::string& arg="");
-};
-
-class ShaderError : public std::runtime_error {
-public:
-    ShaderError(const std::string&, const char* shad=nullptr, const std::string& file="", int line=-1);
-
-protected:
-    std::string formatString(const std::string&, const char* shad=nullptr, const std::string& file="", int line=-1);
-};
-
-struct File {
-    // typedef std::tuple<std::string, std::string, std::string> FilePath;
-    struct FilePath {
-        std::string dir;
-        std::string basename;
-        std::string ext;
-    };
-    FilePath path;
-    std::stringstream src;
-    std::map<unsigned int, std::shared_ptr<File>> include_map;
-
-    File() {}
-    File(const File& rhs) { *this = rhs; }
-
-    File& operator=(const File& rhs) {
-        path = rhs.path;
-        src.str("");
-        src << rhs.src.rdbuf();
-        include_map = rhs.include_map;
-        return *this;
-    }
-};
-
-// File::FilePath get_file_path(std::string);
-
-class ShaderPreprocessor;
-
-enum OpenGLProfiles {
-    Core,
-    Compatibility,
-    ES
-};
-
-struct ShaderUnit {
-    GLenum type = 0x0;
-    File file;
-    std::string preprocSource;
-    std::map<std::string, std::string> defines;
-    short vMajor=0, vMinor=0;
-    OpenGLProfiles profile = Core;
-};
-
-class ShaderPreprocessor;
-
-class ShaderProgram {
-    friend ShaderPreprocessor;
-public:
-    ShaderProgram() {}
-    ShaderProgram(const ShaderProgram& rhs) = delete;
-    ShaderProgram(ShaderProgram&& rhs);
-
-    ~ShaderProgram();
-
-    ShaderProgram& operator=(const ShaderProgram& rhs) = delete;
-    ShaderProgram& operator=(ShaderProgram&& rhs);
-
-    std::vector<ShaderUnit> getShaders() const;
-    ShaderUnit getShaders(unsigned int) const;
-    void use() const;
-    unsigned int id() const;
-
-    void setBool(const std::string& name, bool value) const;
-    void setInt(const std::string& name, int value) const;
-    void setUnsigned(const std::string& name, int value) const;
-    void setFloat(const std::string& name, float value) const;
-    void setMat4(const std::string& name, glm::mat4& value) const;
-
-    static ShaderProgram CreateShaderProgram(std::vector<ShaderUnit>&);
-
-private:
-    ShaderProgram(std::vector<ShaderUnit>& shaders) : _shader_units(shaders){}
-    
-    std::vector<ShaderUnit> _shader_units;
-    unsigned int _id;
-};
-
-class ShaderPreprocessor {
-public:
-    typedef ShaderPreprocessorError::Codes Codes;
-
-    enum TokenType {
-        TK,
-        DR,
-        WS,
-        NL,
-        LC,
-        BC
-    };
-    static std::string TokenName(const TokenType&);
-
-    std::map<std::string, GLenum> AcceptedExtensions = {
-        {".frag", GL_FRAGMENT_SHADER},
-        {".fs", GL_FRAGMENT_SHADER},
-        {".vert", GL_VERTEX_SHADER},
-        {".vs", GL_VERTEX_SHADER},
-        {".tess", 0x0},
-        {".geom", GL_GEOMETRY_SHADER},
-        {".comp", 0x0},
-        {".shad", 0x0},
-        {".glsl", 0x0}
-    };
-    std::map<std::string, OpenGLProfiles> AcceptedProfiles {
-        {"core", Core},
-        {"compatibility", Compatibility},
-        {"es", ES}
-    };
-    std::vector<std::string> Directories;
-    std::map<std::string, std::string> BuiltIns;
-
-    ShaderPreprocessor();
-    
-    
-    File load(const std::string, bool builtin_first=false) const;
-    ShaderUnit& preprocess(const std::string&, ShaderUnit&) const;
-    ShaderUnit preprocess(File, GLenum shader_type=0x0) const;
-    ShaderUnit preprocess(const std::string&, GLenum shader_type=0x0) const;
-    ShaderProgram ReloadFromFile(const ShaderProgram& rhs) const;
-    ShaderProgram CreateShaderProgram(std::vector<std::string>) const;
-
-private:
-    typedef std::pair<TokenType, std::string> Token;
-    typedef std::vector<std::string> StringVec; 
-
-    inline bool directive_dispatch(ShaderUnit&, const std::string&) const;
-    inline std::vector<Token> tokenize(const std::string&) const;
-
-    inline bool preprocessor_include(ShaderUnit&, const StringVec&, const std::string&) const;
-    inline bool preprocessor_version(ShaderUnit&, const StringVec&, const std::string&) const;
-    inline bool preprocessor_define(ShaderUnit&, const StringVec&, const std::string&) const;
-    // inline bool preprocessor_uniform(ShaderUnit&, const std::string&, const std::string&) const;
-
-    File loadFromBase(const std::string, const std::string base="") const;
-    File loadFromDirectories(const std::string) const;
-    File loadFromBuiltIn(const std::string) const;
-    File load_BuiltInFirst(const std::string) const;
-    File load_FilesFirst(const std::string) const;
-};
-
-}
-#endif

engine/NBGraphics/src/Buffers.cpp

@@ -2,4 +2,25 @@
 
 namespace nb {
 
+const std::unordered_map<GLenum, std::string> BufferTypes({
+    {GL_ARRAY_BUFFER, "GL_ARRAY_BUFFER"},
+    {GL_ELEMENT_ARRAY_BUFFER, "GL_ELEMENT_BUFFER"}
+});
+
+using BufferErrorCodes = BufferError::Codes;
+const std::string BufferError::type = "nb::BufferError";
+const ErrorCodeMap BufferError::ErrorMessages = {
+    { BufferErrorCodes::UNDEFINED, "Error" },
+    { BufferErrorCodes::DATA_OVERFLOW, "Attempting buffer overflow" },
+    { BufferErrorCodes::INVALID_BUFFER, "Attempting operation on invalid buffer" },
+    { BufferErrorCodes::HANDLE_OVERWRITE, "Attempting to overwrite active buffer"}
+
+};
+
+template<>
+ArrayBuffer<false>::ArrayBuffer(const ByteVector& data_, GLenum usage_) 
+: BufferType() {
+    data(data_, usage_);
+}
+
 }

engine/NBGraphics/src/Camera.cpp

@@ -1,5 +1,6 @@
-#include "Camera.h"
+#include "Camera.hpp"
-namespace NB {
+
+namespace nb {
 
 // Camera class
 Camera::Camera(const Vec3& pos, const Vec3& tar, const Vec3& up) {

engine/NBGraphics/src/OGLObjects.cpp

@@ -0,0 +1,11 @@
+#include "OGLObjects.hpp"
+
+namespace nb {
+
+const std::string OGLError::type = "nb::OGLError";
+const ErrorCodeMap OGLError::ErrorMessages = {
+    { OGLError::Codes::UNDEFINED, "Error" },
+    {OGLError::Codes::HANGING_OBJECT, "Attempting to leave a hanging OpenGL object"}
+};
+
+} // namespace nb

engine/NBGraphics/src/ProgramPipeline.cpp

@@ -0,0 +1,75 @@
+#include "ProgramPipeline.hpp"
+
+namespace nb{
+
+using ShaderErrCodes = ShaderError::Codes;
+const std::string ShaderError::type = "nb::ShaderError";
+const ErrorCodeMap ShaderError::ErrorMessages = {
+    {ShaderErrCodes::UNDEFINED, "Error"}
+};
+
+using ProgramErrCodes = ProgramError::Codes;
+const std::string ProgramError::type = "nb::ProgramError";
+const ErrorCodeMap ProgramError::ErrorMessages = {
+    {ProgramErrCodes::UNDEFINED, "Error"},
+    {ProgramErrCodes::LINKING_ERROR, "Linker error"}
+};
+
+Shader::Shader(GLenum target_, const std::string& source_) : target(target_) {
+    declare();
+    _success = status(GL_COMPILE_STATUS);
+}
+
+Shader::Shader(Shader&& cpy) : target(cpy.target) {
+    _id = cpy._id;
+}
+
+Shader::operator bool() { return _success; }
+
+GLint Shader::status(GLenum parameter) const {
+    GLint param = 0;
+    glGetShaderiv(_id, parameter, &param);
+    return param;
+}
+
+std::string Shader::log() const {
+    GLint logsize = status(GL_INFO_LOG_LENGTH);
+    char* log_ = new char[logsize];
+    glGetShaderInfoLog(_id, logsize, NULL, log_);
+    std::string ret(log_, logsize);
+    delete[] log_;
+    return ret; 
+}
+
+Program::Program(SharedVector<Shader> shaders_) {
+    declare();
+    for (auto shad_ptr : shaders_) {
+        glAttachShader(_id, shad_ptr->id());
+    }
+    glLinkProgram(_id);
+    _success = status(GL_LINK_STATUS);
+    if (!_success) {
+        WARN(log(), 0x01);
+    }
+}
+
+Program::operator bool() { return _success; }
+
+GLint Program::status(GLenum parameter) const {
+    GLint param = 0;
+    glGetProgramiv(_id, parameter, &param);
+    return param;
+}
+
+std::string Program::log() const {
+    GLint logsize = status(GL_INFO_LOG_LENGTH);
+    char* log_ = new char[logsize];
+    glGetProgramInfoLog(_id, logsize, NULL, log_);
+    std::string ret(log_, logsize);
+    delete[] log_;
+    return ret; 
+}
+
+
+
+}

engine/NBGraphics/src/Textures.cpp

@@ -0,0 +1,10 @@
+#include "Textures.hpp"
+
+namespace nb{
+
+Texture::Texture(GLenum target_) : target(target_) {
+    glGenTextures(1, &_id);
+}
+
+
+} // namespace nb

engine/NBGraphics/src/VAOManager.cpp

@@ -1,225 +0,0 @@
-#include "VAOManager.hpp"
-
-namespace NB {
-
-using BufferManagerPointer = std::shared_ptr<Buffer>;
-
-VAOManager::VAOManager() { glGenVertexArrays(1, &_id); }
-
-VAOManager::VAOManager(
-        std::vector<BufferManagerPointer> vert_bufs,
-        BufferManagerPointer elmt_buf,
-        const VertexAttributeList& vert_attrs
-) : VAOManager() {
-    _elmt_buffer = elmt_buf;
-    for (BufferManagerPointer vb : vert_bufs) {
-        _vert_buffers[vb->id()] = vb;
-    }
-    if (vert_attrs.size()!=0) {
-        generate(vert_attrs);
-    }
-}
-
-VAOManager::VAOManager(VAOManager&& rhs) { *this = std::move(rhs); }
-
-VAOManager& VAOManager::operator=(VAOManager&& rhs) {
-    remove();
-    _vert_buffers = rhs._vert_buffers;
-    _elmt_buffer = rhs._elmt_buffer;
-    _vert_attrs = rhs._vert_attrs;
-    return *this;
-}
-
-VertexAttributeList VAOManager::getLayout() const { return _vert_attrs; }
-
-GLuint VAOManager::id() const { return _id; }
-
-bool VAOManager::isInitialized() const {
-    return _id && glIsVertexArray(_id);
-}
-
-void VAOManager::remove() const {
-    bind();
-    for (int i{0}; i < _vert_attrs.size(); ++i) {
-        glDisableVertexAttribArray(i);
-    }
-    unbind();
-    glDisableVertexAttribArray(_id);
-}
-
-unsigned int VAOManager::vertSize(GLuint id) const {
-    unsigned int size = 0; 
-    for (const VertexAttribute& va : _vert_attrs) {
-        if (va.ptr.buffer == id) {
-            size += va.GLSLSize * GLSLTypeSize(va.GLSLType);
-        }
-    }
-    return size;
-}
-
-std::vector<BufferManagerPointer> VAOManager::getVertexBuffers() const {
-    std::vector<BufferManagerPointer> ret;
-    for (const auto& i : _vert_buffers) {
-        ret.emplace_back(i.second);
-    }
-    return ret;
-}
-
-RawVec VAOManager::attributeData(unsigned int i) {
-    if (i <= _vert_attrs.size()) {
-        throw std::out_of_range("No vertex attribute exists for specified index");
-    }
-    VertexAttribute attr = _vert_attrs[i];
-    BufferManagerPointer buffer = _vert_buffers[attr.ptr.buffer]; 
-    RawVec data = buffer->data();
-    unsigned int attr_size = attr.GLSLSize*GLSLTypeSize(attr.GLSLType);
-    RawVec ret((buffer->size()-attr.ptr.offset-attr_size)*attr_size/attr.ptr.stride);
-    int data_size = data.size();
-    for (int i{0}; i < data_size; ++i) {
-        if (isIndexInVertexAttribute(i, attr)) {
-            ret[i] = data[i];
-        }
-    }
-    return ret;
-}
-
-RawVec VAOManager::attributeData(unsigned int i, const RawVec& new_data) {
-    if (i >= _vert_attrs.size()) {
-        throw std::out_of_range("No vertex attribute exists for specified index.");
-    }
-    VertexAttribute attr = _vert_attrs[i];
-    BufferManagerPointer buffer = _vert_buffers[attr.ptr.buffer]; 
-    unsigned int attr_size = attr.GLSLSize*GLSLTypeSize(attr.GLSLType);
-    unsigned int offset = attr.ptr.offset;
-    unsigned int num_verts = buffer->size() / vertSize(buffer->id());
-    if (num_verts*attr_size != new_data.size()) {
-        // WHY HERE????
-        THROW_VAO_ERROR(
-            "Input data size of " + std::to_string(new_data.size()) 
-            + " does not match data size for requested vertex attribute of total size " + std::to_string(num_verts*attr_size)
-            + "."
-        );
-    }
-    uint64_t pos = uint64_t(new_data.data());
-    for (int i{0}; i<num_verts; i++) {
-        buffer->data((void*)(pos+i*attr_size), offset+i*attr.ptr.stride, attr_size);
-    }
-    return RawVec(new_data);
-}
-
-void VAOManager::bind() const {
-    glBindVertexArray(_id); 
-    if (_elmt_buffer) { _elmt_buffer->bind(); }
-}
-
-void VAOManager::unbind() const {
-    glBindVertexArray(0);
-    if (_elmt_buffer) { _elmt_buffer->unbind(); }
-}
-
-void VAOManager::addVBO(BufferManagerPointer vert_buf) {
-    GLuint vert_id = vert_buf->id();
-    if (_vert_buffers.find(vert_id) == _vert_buffers.end()) {
-        _vert_buffers[vert_buf->id()] = vert_buf;
-    } else {
-        THROW_VAO_ERROR("Attempting to add identical VBO id of " + std::to_string(vert_id) + ".");
-    }
-}
-
-void VAOManager::changeEBO(BufferManagerPointer ebo) {
-    _elmt_buffer = ebo;
-}
-
-VertexAttributeList VAOManager::addVertexAttributes(const VertexAttributeList& vert_attrs) { 
-    VertexAttributeList curr_vas = _vert_attrs;
-    curr_vas.insert(curr_vas.end(), vert_attrs.begin(), vert_attrs.end());
-    try {
-        throw checkValid(curr_vas);
-    } catch (VAOError vaoe) {
-        if (vaoe.error) {
-            THROW_VAO_ERROR(vaoe.what());
-        }
-    }
-    _vert_attrs = curr_vas;
-    generate();
-    return _vert_attrs;
-}
-
-VertexAttributeList VAOManager::addVertexAttributes(VertexAttribute vert_attr) {
-    return addVertexAttributes({vert_attr});
-}
-
-VertexAttributeList VAOManager::generate() {
-    bind();
-    unsigned int num_attrs = _vert_attrs.size();
-    VertexAttribute* va;
-    for (int i = 0; i < num_attrs; ++i) {
-        va = &(_vert_attrs[i]);
-        _vert_buffers[va->ptr.buffer]->bind();
-        glVertexAttribPointer(
-            i,
-            va->GLSLSize,
-            va->GLSLType,
-            va->GLSLNormalization,
-            va->ptr.stride,
-            (void*)va->ptr.offset
-        );
-        glVertexAttribDivisor(i, va->ptr.divisor);
-        glEnableVertexAttribArray(i);
-    }
-    if (_elmt_buffer != nullptr) {
-        _elmt_buffer->bind();
-    }
-    unbind();
-    return _vert_attrs;
-}
-
-VertexAttributeList VAOManager::generate(VertexAttributeList vert_attrs) {
-    try {
-        throw checkValid(vert_attrs);
-    } catch (VAOError vaoe) {
-        if (vaoe.error) {
-            THROW_VAO_ERROR(vaoe.what());
-        }
-    }
-    _vert_attrs.swap(vert_attrs);
-    return generate();
-}
-
-VertexAttributeList VAOManager::changeLayout(unsigned int i, VertexAttributePointer vap) {
-    _vert_attrs[i].ptr = vap;
-    bind();
-    const VertexAttribute* va = &(_vert_attrs[i]);
-    glDisableVertexAttribArray(i);
-    _vert_buffers[va->ptr.buffer]->bind();
-    glVertexAttribPointer(
-        _id,
-        va->GLSLSize,
-        va->GLSLType,
-        va->GLSLNormalization,
-        va->ptr.stride,
-        (void*)va->ptr.offset
-    );
-    glVertexAttribDivisor(i, va->ptr.divisor);
-    glEnableVertexAttribArray(i);
-    unbind();
-    return _vert_attrs;
-}
-
-VAOError VAOManager::checkValid(const VertexAttributeList& vert_attrs) {
-    GLuint va_id;
-    unsigned int num_attrs = vert_attrs.size();
-    for (int i = 0; i < num_attrs; ++i) {
-        va_id = vert_attrs[i].ptr.buffer;
-        if (_vert_buffers.find(va_id) == _vert_buffers.cend()) {
-            return VAOError("Attempting to point to unknown VBO of id " + std::to_string(va_id) + 
-            " at Vertex Attribute " + std::to_string(i) + ".");
-        }
-        if (vert_attrs[i].ptr.stride<0) {
-            return VAOError("Invalid stride value at Vertex Attribute " + std::to_string(i) + ".");
-        }
-    }
-    return VAOError(false);
-}
-
-} // namespace NB

engine/NBGraphics/src/VertexArray.cpp

@@ -0,0 +1,231 @@
+#include "VertexArray.hpp"
+
+namespace nb {
+
+using VAOErrorCodes = VAOError::Codes;
+const std::string VAOError::type = "nb::VAOError";
+const ErrorCodeMap VAOError::ErrorMessages = {
+    { VAOErrorCodes::UNDEFINED, "Error" },
+    { VAOErrorCodes::INVALID_ATTRIBUTE, "Targeting invalid attribute"},
+    { VAOErrorCodes::INVALID_VAO, "Targeting invalid VAO" }
+};
+
+VAO::VAO(const VertexAttributePointerList& attr_ptrs) {
+    attributes(attr_ptrs);
+}
+
+VAO::VAO(VAO&& other) {
+    *this = std::move(other);
+}
+
+VAO& VAO::operator=(VAO&& rhs) {
+    _id = rhs._id;
+    _attrs = rhs._attrs;
+
+    rhs._id = 0;
+    rhs._attrs = {};
+
+    return *this;
+}
+
+VertexAttributePointerList VAO::attributes() const {
+    return _attrs;
+}
+
+VertexAttributePointerList VAO::attributes(const VertexAttributePointerList& attrs_) {
+    declare();
+    disable();
+    _attrs = attrs_;
+    bind();
+    for (auto attr_ptr : attrs_) {
+        glBindBuffer(GL_ARRAY_BUFFER, attr_ptr.buffer);
+        GLuint idx = attr_ptr.index; 
+        glVertexAttribPointer(
+            idx,
+            attr_ptr.attribute.GLSLSize,
+            attr_ptr.attribute.GLSLType,
+            attr_ptr.attribute.GLSLNormalization,
+            attr_ptr.attribute.layout.stride,
+            (void*)attr_ptr.attribute.layout.offset
+        );
+        glEnableVertexAttribArray(idx);
+    }
+    unbind();
+    return _attrs;
+}
+
+VertexAttributePointer VAO::attr(GLuint idx) const {
+    for (auto attr_ptr : _attrs) {
+        if (idx == attr_ptr.index) {
+            return attr_ptr;
+        }
+    }
+    THROW(VAOError(Codes::INVALID_ATTRIBUTE));
+}
+
+void VAO::enable() const {
+    if (_id) {
+        bind();
+        for(auto attr_ptr : _attrs) {
+            glEnableVertexAttribArray(attr_ptr.index);
+        }
+        unbind();
+    }
+}
+
+void VAO::enable(GLuint idx) const {
+    if(_id) {
+        bind();
+        glEnableVertexAttribArray(attr(idx).index); 
+        unbind();
+    }
+}
+
+void VAO::disable() const {
+    if(_id) {
+        bind();
+        for(auto attr_ptr : _attrs) {
+            glDisableVertexAttribArray(attr_ptr.index); 
+        }
+        unbind();
+    }
+}
+
+void VAO::disable(GLuint idx) const {
+    if(_id) {
+        bind();
+        glDisableVertexAttribArray(attr(idx).index); 
+        unbind();
+    }
+}
+
+VertexGroup::VertexGroup(VertexGroup&& other) {
+    *this = std::move(other);
+}
+
+VertexGroup& VertexGroup::operator=(VertexGroup&& rhs) {
+    _vertex_data = rhs._vertex_data;
+    _ebo = rhs._ebo;
+    _vao = rhs._vao;
+
+    rhs._vertex_data = {};
+    rhs._ebo = nullptr;
+    rhs._vao = nullptr;
+
+    return *this;
+}
+
+VertexGroup::VertexGroup(const VertexDataVec& vertex_data_) 
+: _vao(std::make_shared<VAO>()), _ebo(std::make_shared<EBO>()) {
+    setBuffers(vertex_data_);
+}
+
+VertexGroup::VertexGroup(const VertexData& vertex_data_) 
+: VertexGroup(VertexDataVec({vertex_data_})) {}
+
+VertexGroup::VertexGroup(
+    const ByteVector& data_,
+    const VertexAttributeList& attrs_
+) : VertexGroup({std::make_shared<VBO>(data_), attrs_}) {}
+
+size_t VertexGroup::addBuffer(const VertexData& vertex_data_) {
+    VertexData data = vertex_data_;
+    _vertex_data.emplace_back(data);
+    VertexAttributePointerList attrs = _vao->attributes();
+    GLuint idx = attrs.size();
+    for (auto attr : data.attrs) {
+        attrs.emplace_back(
+            VertexAttributePointer{attr, data.vbo->id(),idx}
+        );
+        idx++;
+    }
+    _vao->attributes(attrs);
+    return _vertex_data.size();
+}
+
+VertexData VertexGroup::getBuffers(size_t idx) {
+    return _vertex_data[idx];
+}
+
+ VertexDataVec VertexGroup::getBuffers() {
+    return _vertex_data;
+}
+
+size_t VertexGroup::setBuffers(const VertexDataVec& vertex_data_) {
+    _vertex_data = vertex_data_;
+    VertexAttributePointerList attr_ptrs;
+    GLuint idx = 0;
+    for (auto data : _vertex_data) {
+        for (auto attr : data.attrs) {
+            attr_ptrs.emplace_back(
+                VertexAttributePointer{attr, data.vbo->id(), idx}
+            );
+            idx++;
+        }
+    }
+    _vao->attributes(attr_ptrs);
+    return _vertex_data.size();
+}
+
+VertexData VertexGroup::dropBuffer(size_t idx) {
+    if (idx >= _vertex_data.size()) {
+        THROW(BufferError(BufferError::Codes::INVALID_BUFFER));
+    }
+    VertexDataVec tmp;
+    VertexData ret;
+    size_t i = 0;
+    for (auto buf : _vertex_data) {
+        if (i == idx) {
+            ret = tmp[idx];
+        } else {
+            tmp.emplace_back(buf);
+        }
+        i++;
+    }
+    setBuffers(tmp);
+    return ret;
+}
+
+VertexAttributePointer VertexGroup::attribute(size_t idx_) const {
+    return _vao->attr(idx_);
+}
+
+void VertexGroup::enableAttr(GLuint idx) {
+    bind();
+    _vao->enable(idx);
+    unbind();
+}
+
+void VertexGroup::disableAttr(GLuint idx) {
+    bind();
+    _vao->disable(idx);
+    unbind();
+}
+
+void VertexGroup::disableBuffer(size_t idx) {
+    auto buf_idx = _vertex_data[idx].vbo->id();
+    bind();
+    for (auto attr : _vao->attributes()) {
+        if (attr.buffer == buf_idx) {
+            _vao->disable(attr.index);
+        }
+    }
+    unbind();
+}
+
+void VertexGroup::enableBuffer(size_t idx) {
+    auto buf_idx = _vertex_data[idx].vbo->id();
+    bind();
+    for (auto attr : _vao->attributes()) {
+        if (attr.buffer == buf_idx) {
+            _vao->enable(attr.index);
+        }
+    }
+    unbind();
+}
+
+void VertexGroup::enable() { _vao->enable(); }
+
+void VertexGroup::disable() { _vao->disable(); }
+
+} // namespace nb

engine/NBGraphics/src/Window.cpp

@@ -16,9 +16,23 @@ static std::map<int, int> defailt_window_hints = {
 #endif
 };
 
-GLError::GLError(const std::string& msg) : std::runtime_error(msg) {}
+using OpenGLErrorCodes = OpenGLError::Codes;
+const std::string OpenGLError::type = "nb::OpenGLError";
+const ErrorCodeMap OpenGLError::ErrorMessages = {
+    {OpenGLErrorCodes::UNDEFINED, "Error"},
+    {OpenGLErrorCodes::INIT_FAILED, "GLFW initialization failed"},
+    {OpenGLErrorCodes::GLFW_INTIALIZED, "GLFW has already been initialized"},
+    {OpenGLErrorCodes::GLAD_FAILED, "GLAD initialization failed"}
+};
 
-WindowError::WindowError(const std::string &msg) : std::runtime_error(msg) {}
+using WindowErrorCodes = WindowError::Codes;
+const std::string WindowError::type = "nb::WindowError";
+const ErrorCodeMap WindowError::ErrorMessages = {
+    {WindowErrorCodes::UNDEFINED, "Error"},
+    {WindowErrorCodes::INITIALIZED_WINDOW, "Window already initialized"},
+    {WindowErrorCodes::NO_GLFW, "GLFW has not been initialized"},
+    {WindowErrorCodes::INIT_FAILED, "Could not intialized window"}
+};
 
 int Window::getGLFWHint(int hint_key) {
     if (GLFWHints.find(hint_key) == GLFWHints.end()) {
@@ -30,7 +44,7 @@ int Window::getGLFWHint(int hint_key) {
 
 int Window::setGLFWHint(int hint_key, int hint_val) {
     if (Window::_glfw_init) {
-        throw GLError("Cannot set GLFW hint after window is initialized.");
+        THROW(OpenGLError(OpenGLErrorCodes::GLFW_INTIALIZED));
     } else {
         GLFWHints[hint_key] = hint_val;
     }
@@ -60,7 +74,7 @@ Window::Window(const uint16_t x, const uint16_t y, const char* initName, GLFWmon
             Window::_glfw_init = true;
         } else {            
             if (Window::StrictInitialization) {
-                throw GLError("Failed to load GLFW with glfwInit()="+std::to_string(glfwResponse)+".");
+                THROW(OpenGLError(OpenGLErrorCodes::INIT_FAILED));
             }
         }
     }
@@ -103,7 +117,7 @@ int Window::getWindowHint(int hint_key) const {
 
 int Window::setWindowHint(int hint_key, int hint_val) {
     if (_init) {
-        throw WindowError("Cannot set window hint after window is initialized.");
+        THROW(WindowError(WindowErrorCodes::INITIALIZED_WINDOW));
     } else {
         windowHints[hint_key] = hint_val;
     }
@@ -112,7 +126,7 @@ int Window::setWindowHint(int hint_key, int hint_val) {
 
 int Window::init() {
     if (!_glfw_init) {
-        throw GLError("GLFW has not been initialized.");
+        THROW(WindowError(WindowErrorCodes::NO_GLFW));
     }
     for (const auto& hint : windowHints) {
         glfwWindowHint(hint.first, hint.second);
@@ -123,7 +137,7 @@ int Window::init() {
         Window::WindowContexts.erase(window);
         if (Window::WindowContexts.size()==0 && Window::_glfw_init) { glfwTerminate(); }
         if (Window::StrictInitialization) {
-            throw WindowError("Could not create window in glfwCreateWindow().");
+            THROW(WindowError(WindowErrorCodes::INIT_FAILED));
         }
     }
     glfwMakeContextCurrent(window);
@@ -133,10 +147,7 @@ int Window::init() {
     if (!gladResponse) {
         Window::checkKillGLFW();
         if (Window::StrictInitialization) {
-            throw GLError("Failed to load GLAD with \
+            THROW(OpenGLError(OpenGLErrorCodes::GLAD_FAILED));
-                gladLoadGLLoader((GLADloadproc)glfwGetProcAddress)="+\
-                std::to_string(gladResponse)+"."
-            );
         }
     }
 

engine/NBGraphics/src/shader.cpp

@@ -1,742 +0,0 @@
-#include "Shader.h"
-
-// #define _PREPROC_FUNC_PARAM_NAMES_ (const ShaderPreprocessor& proc, ShaderUnit& shad, unsigned int linenum, const std::string& line, std::vector<uint8_t>& params)
-
-namespace NB{
-
-File::FilePath get_file_path(std::string name) {
-    const std::vector<char> allowed_special_chars = {
-        '.', '!', '#', '$', '%', '&', '\'', '(', ')', '+', ',', '-', ';', '=', '@', '[', ']', '^', '_', '`', '~' 
-    };
-    std::vector<std::string> path = {""};
-    for (const char c : name) {
-        if (c == '/' || c == '\\') {
-            path.push_back("");
-        } else if (std::isalnum(c)) {
-            path.back() += c;
-        } else {
-            bool spec_char_found = false;
-            for (const char sc : allowed_special_chars) {
-                if (c == sc) {
-                    path.back() += c;
-                    spec_char_found = true;
-                    break;
-                }
-            }
-            if (!spec_char_found) {
-                throw std::runtime_error("'" + name + "' is not valid filepath.");
-            }
-        }
-    }
-    File::FilePath ret;
-    for (const auto& tk : path) {
-        if (tk == path.back()) {
-            size_t period = tk.find(".");
-            if (period == std::string::npos) {
-                ret.basename = tk;
-                ret.ext = "";
-            } else {
-                ret.basename = tk.substr(0, period);
-                ret.ext = tk.substr(period);
-            }
-        } else {
-            ret.dir += tk + "/";
-        }
-    }
-    return ret;
-}
-
-// ShaderPreprocessorError class
-ShaderPreprocessorError::ShaderPreprocessorError(
-    const std::string& msg,
-    const std::string& file,
-    int line
-) : code(Codes::UNDEFINED), std::runtime_error(formatDebugString(msg, file, line)) {}
-
-ShaderPreprocessorError::ShaderPreprocessorError(
-    Codes err_code,
-    const std::string& arg,
-    const std::string& file,
-    int line
-) : code(err_code), std::runtime_error(formatDebugString(errorCodeParser(err_code, arg), file, line)) {}
-
-std::string ShaderPreprocessorError::errorCodeParser(Codes err_code, const std::string& arg) {
-    switch(err_code) {
-        case Codes::FILE_NOT_FOUND:
-            return "File '" + arg + "' not found.";
-        case Codes::BUILTIN_NOT_FOUND:
-            return "Built-in '" + arg + "' not found.";
-        case Codes::CUSTOM:
-        case Codes::UNDEFINED:
-            return arg;
-        case Codes::NONE:
-        default:
-            return "";
-    }
-}
-
-// ShaderError class
-ShaderError::ShaderError(
-    const std::string& msg,
-    const char* shad,
-    const std::string& file,
-    int line
-) : std::runtime_error(formatString(msg, shad, file, line)) {}
-
-std::string ShaderError::formatString(
-    const std::string& msg,
-    const char* shad,
-    const std::string& file,
-    int line
-) {
-    std::stringstream ret;
-    if (file != "") {
-        ret << "In file " << file;
-        if (line >= 0) {
-            ret << " at line " << line;
-        }
-        ret << ":\n\t";
-    }
-    ret << msg;
-    if (shad != nullptr) {
-        ret << " with shader error: " << shad;
-    }
-    return ret.str();
-}
-
-// ShaderPreprocessor class
-std::string ShaderPreprocessor::TokenName(const ShaderPreprocessor::TokenType& x) {
-    switch(x) {
-        case TK:
-            return "Token";
-            break;
-        case DR:
-            return "Directive";
-            break;
-        case WS:
-            return "Whitespace";
-            break;
-        case NL:
-            return "NewLine";
-            break;
-        case LC:
-            return "LineComment";
-            break;
-        case BC:
-            return "BlockComment";
-            break;
-        default:
-            return "Unrecognized";
-            break;
-    }
-}
-
-ShaderPreprocessor::ShaderPreprocessor() {}
-
-File ShaderPreprocessor::loadFromBase(const std::string path, const std::string base) const {
-    File ret;
-    std::ifstream filestream;
-    filestream.open(base + path);
-    if (filestream.is_open()) {
-        ret.path = get_file_path(base + path);
-        ret.src << filestream.rdbuf();
-        return ret;
-    }
-    filestream.close();
-    std::string ext;
-    for (const auto& kv : AcceptedExtensions) {
-        ext = kv.first;
-        filestream.open(base + path + ext);
-        if (filestream.is_open()) {
-            ret.path = get_file_path(base + path + ext);
-            ret.src << filestream.rdbuf();
-            return ret;
-        }
-        filestream.close();
-    }
-    throw ShaderPreprocessorError(Codes::FILE_NOT_FOUND, base + path);
-}
-
-File ShaderPreprocessor::loadFromDirectories(const std::string name) const {
-    File ret;
-    std::ifstream fstream;
-    for (const std::string& path : Directories) {
-        fstream.open(path + name);
-        if (fstream.is_open()) {
-            ret.path = get_file_path(path + name);
-            ret.src << fstream.rdbuf();
-            return ret;
-        }
-        fstream.close();
-    }
-    throw ShaderPreprocessorError(Codes::FILE_NOT_FOUND, name);
-}
-
-File ShaderPreprocessor::load(const std::string path, bool builtin_first) const {
-    if(builtin_first) {
-        return load_BuiltInFirst(path);
-    }
-    return load_FilesFirst(path);
-}
-
-File ShaderPreprocessor::loadFromBuiltIn(const std::string name) const {
-    File ret;
-    //std::stringstream ret;
-    decltype(BuiltIns)::const_iterator builtin_it = BuiltIns.find(name);
-    if (builtin_it != BuiltIns.end()) {
-        ret.path = File::FilePath{"builtin:", name, ""};
-        ret.src << builtin_it->second;
-        return ret;
-    }
-    throw ShaderPreprocessorError(Codes::BUILTIN_NOT_FOUND, name);
-}
-
-File ShaderPreprocessor::load_FilesFirst(const std::string path) const {
-    try {
-        return loadFromBase(path);
-    } catch (ShaderPreprocessorError e) {
-        if (e.code == Codes::FILE_NOT_FOUND) {
-            try {
-                return loadFromDirectories(path);
-            } catch (ShaderPreprocessorError f) {
-                if (f.code == Codes::FILE_NOT_FOUND) {
-                    try {
-                        return loadFromBuiltIn(path);
-                    } catch(ShaderPreprocessorError g) {
-                        if (g.code == Codes::BUILTIN_NOT_FOUND) {
-                            throw ShaderPreprocessorError(Codes::FILE_NOT_FOUND, path);
-                        } else { throw g; }
-                    }
-                } else { throw f; }
-            }
-        } else { throw e; }
-    }
-}
-
-File ShaderPreprocessor::load_BuiltInFirst(const std::string path) const {
-    try {
-        return loadFromBuiltIn(path);
-    } catch (ShaderPreprocessorError f) {
-        if (f.code == Codes::BUILTIN_NOT_FOUND) {
-            try {
-                return loadFromDirectories(path);
-            } catch (ShaderPreprocessorError e) {
-                if (e.code == Codes::FILE_NOT_FOUND) {
-                    return loadFromBase(path);
-                } else {
-                    throw e;
-                }
-            }
-        } else {
-            throw f;
-        }
-    }
-    
-}
-
-std::vector<ShaderPreprocessor::Token> ShaderPreprocessor::tokenize(const std::string& code) const {
-    enum State {
-        FSlash,
-        WhiteSpace,
-        LineComment,
-        BlockComment,
-        BlockCommentEndStar,
-        Directive,
-        Token
-    };
-    
-    std::vector<ShaderPreprocessor::Token> tks;
-    
-    std::string token = "";
-    State state = WhiteSpace;
-    for(char c : code) {
-        if (c==13) {
-            continue;
-        }
-        switch(state) {
-            case WhiteSpace:
-                if (c=='/') {
-                    if (token != "") { tks.push_back({WS, token}); }
-                    token = c;
-                    state = FSlash;
-                } else if (c=='#') {
-                    if (token != "") { tks.push_back({WS, token}); }
-                    token = c;
-                    state = Directive;
-                } else if (c=='\n') {
-                    if (token != "") { tks.push_back({WS, token}); }
-                    tks.push_back({NL, "\n"});
-                    token = "";
-                    state = WhiteSpace;
-                } else if (std::isblank(c)) {
-                    token += c;
-                } else {
-                    if (token != "") { tks.push_back({WS, token}); }
-                    token = c;
-                    state = Token;
-                }
-                break;
-            case FSlash:
-                if (c=='/') {
-                    token += c;
-                    state = LineComment;
-                } else if (c=='*') {
-                    token += c;
-                    state = BlockComment;
-                } else if (c=='\n') {
-                    tks.push_back({TK, token});
-                    tks.push_back({NL, "\n"});
-                    token = "";
-                    state = WhiteSpace;
-                } else if (std::isblank(c)) {
-                    tks.push_back({TK, token});
-                    token = c;
-                }else {
-                    token += c;
-                    state = Token;
-                }
-                break;
-            case LineComment:
-                if (c=='\n') {
-                    tks.push_back({LC, token});
-                    tks.push_back({NL, "\n"});
-                    token = "";
-                    state = WhiteSpace;
-                } else {
-                    token += c;
-                }
-                break;
-            case BlockComment:
-                token += c;
-                if (c=='*') {
-                    state = BlockCommentEndStar;
-                }
-                break;
-            case BlockCommentEndStar:
-                token += c;
-                if (c=='/') {
-                    tks.push_back({BC, token});
-                    token = "";
-                    state = WhiteSpace;
-                } else {
-                    state = BlockComment;
-                }
-                break;
-            case Directive:
-                if (c=='\n') {
-                    tks.push_back({DR, token});
-                    tks.push_back({NL, "\n"});
-                    token = "";
-                    state = WhiteSpace;
-                } else if (c=='/') {
-                    tks.push_back({DR, token});
-                    token = c;
-                    state = FSlash;
-                } else {
-                    token += c;
-                }
-                break;
-            case Token:
-                if (c=='\n') {
-                    tks.push_back({TK, token});
-                    tks.push_back({NL, "\n"});
-                    token = "";
-                    state = WhiteSpace;
-                } else if (std::isblank(c)) {
-                    tks.push_back({TK, token});
-                    token = c;
-                    state = WhiteSpace;
-                } else if (c=='/') {
-                    tks.push_back({TK, token});
-                    token = c;
-                    state = FSlash;
-                }else {
-                    token += c;
-                }
-                break;
-            default:
-                break;
-        }
-        
-    }
-
-    switch(state) {
-        case WhiteSpace:
-            if (token != "") { tks.push_back({WS, token}); }
-        case FSlash:
-            tks.push_back({TK, token});
-            break;
-        case LineComment:
-            tks.push_back({LC, token});
-            break;
-        case BlockComment:
-        case BlockCommentEndStar:
-            tks.push_back({BC, token});
-            break;
-        case Directive:
-            tks.push_back({DR, token});
-            break;
-        case Token:
-            tks.push_back({TK, token});
-            break;
-        default:
-            break;
-    }
-
-    return tks;
-}
-
-ShaderUnit& ShaderPreprocessor::preprocess(const std::string& code, ShaderUnit& shad) const {
-    typedef ShaderPreprocessor::Token Token;
-    std::vector<Token> tks = tokenize(code);
-    
-    for (int i{0}; i < tks.size(); ++i) {
-        switch(tks[i].first) {
-            case DR:
-                directive_dispatch(shad, tks[i].second);
-                break;
-            case TK:
-            case NL:
-            case LC:
-            case BC:
-            case WS:
-            default:
-                shad.preprocSource += tks[i].second;
-                break;
-        }
-    }
-    
-    if (shad.vMajor == 0 && shad.vMinor == 0) {
-        shad.vMajor = 1;
-        shad.vMinor = 10;
-    }
-    return shad;
-}
-
-ShaderUnit ShaderPreprocessor::preprocess(File file, GLenum shader_type) const {
-    ShaderUnit ret;
-    ret.file = file;
-    if (shader_type) {
-        ret.type = shader_type;
-    } else {
-        decltype(AcceptedExtensions.begin()) find_type = AcceptedExtensions.find(file.path.ext);
-        if (find_type != AcceptedExtensions.end()) {
-            ret.type = find_type->second;
-        }
-    }
-    preprocess(file.src.str(), ret);
-    return ret;
-}
-
-ShaderUnit ShaderPreprocessor::preprocess(const std::string& code, GLenum shader_type) const {
-    File local;
-    local.path = File::FilePath{"live:", "live", ".shad"};
-    return preprocess(local, shader_type);
-}
-
-ShaderProgram ShaderPreprocessor::CreateShaderProgram(std::vector<std::string> shads) const {
-    std::vector<ShaderUnit> _shader_units;
-    for (const auto& name : shads) {
-        _shader_units.push_back(preprocess(load(name)));
-    }
-    return ShaderProgram::CreateShaderProgram(_shader_units);
-}
-
-ShaderProgram ShaderPreprocessor::ReloadFromFile(const ShaderProgram& rhs) const {
-    std::vector<std::string> shader_names;
-    shader_names.reserve(rhs._shader_units.size());
-    std::string filename;
-    for (const ShaderUnit& shad : rhs._shader_units) {
-        filename = shad.file.path.dir + shad.file.path.basename + shad.file.path.ext;
-        shader_names.emplace_back(filename);
-    }
-    return CreateShaderProgram(shader_names);
-}
-
-bool ShaderPreprocessor::directive_dispatch(ShaderUnit& shad, const std::string& line) const {
-    StringVec dir_tks = {""};
-    for (char c : line) {
-        if (std::isblank(c)) {
-            if (dir_tks.back() != "") {
-                dir_tks.push_back("");
-            }
-        } else {
-            dir_tks.back() += c;
-        }
-    }
-    if (!dir_tks.size()) { return false; }
-
-    if (dir_tks[0][0] != '#') { return false; }
-
-    if (dir_tks[0] == "#define") {
-        return preprocessor_define(shad, dir_tks, line);
-    } else if (dir_tks[0] == "#version") {
-        return preprocessor_version(shad, dir_tks, line);
-    } else if (dir_tks[0] == "#include") {
-        return preprocessor_include(shad, dir_tks, line);
-    }
-    return false;
-}
-
-typedef std::vector<std::string> StringVec;
-
-bool ShaderPreprocessor::preprocessor_include(
-    ShaderUnit& shad,
-    const StringVec& tokens,
-    const std::string& line
-) const
-{
-    try {
-        if (tokens[0] != "#include") { return false; }
-    } catch (std::out_of_range e) {
-        return false;
-    }
-    std::string path = "";
-    for (const auto& tk : tokens) {
-        if (tk != tokens.front()) {
-            path += tk;
-        }
-    }
-    // Add file-inclusion base + 
-    // Do path cleanup + 
-    // Restructure preprocessing data flow
-    std::string filename = path.substr(1, path.size()-2);
-    try {
-        if (path[0] == '"' && path.back() == '"') {
-            preprocess(load(filename).src.str(), shad);
-            return true;
-        } else if (path[0] == '<' && path.back() == '>') {
-            preprocess(load(filename, true).src.str(), shad);
-            return true;
-        }
-    } catch (ShaderPreprocessorError e) {
-        if (e.code == Codes::FILE_NOT_FOUND) {
-            std::cout << "COULD NOT FIND " << filename << ".\n";
-        } else {
-            throw e;
-        }
-    }
-    return false;
-}
-
-bool ShaderPreprocessor::preprocessor_define(ShaderUnit& shad, const StringVec& tokens, const std::string& line) const {
-    shad.preprocSource += line;
-    try {
-        if (tokens[0] != "#define") { return false; }
-        try {
-            shad.defines[tokens[1]] = tokens[2];
-        } catch (std::length_error& f) {
-            shad.defines[tokens[1]] = "";
-        }
-        return true;
-    } catch (std::out_of_range& e) {
-        return false;
-    }
-}
-
-bool ShaderPreprocessor::preprocessor_version(ShaderUnit& shad, const StringVec& tokens, const std::string& line) const {
-    shad.preprocSource += line;
-    std::cout << "Shader version: ";
-    try {
-        if (tokens[0] != "#version") { return false; }
-        if (tokens[1].size() == 3) {
-            short vMajor = tokens[1][0]-'0';
-            short vMinorA = tokens[1][1]-'0';
-            short vMinorB = tokens[1][2]-'0';
-            if (vMajor > 10 || vMinorA > 10 || vMinorB > 10) {
-                return false;
-            }
-            shad.vMajor = vMajor;
-            shad.vMinor = vMinorA*10 + vMinorB;
-            shad.profile = AcceptedProfiles.at(tokens[2]);
-            std::cout << shad.vMajor << "." << shad.vMinor << "\n";
-            return true;
-        } else {
-            return false;
-        }
-    } catch (std::out_of_range& e) {
-        return false;
-    }
-}
-
-
-/* bool ShaderPreprocessor::preprocessor_uniform(
-    ShaderUnit& shad,
-    const std::string& type,
-    const std::string& name
-) const {
-    std::string type_str = "";
-    unsigned int type_str_len = 0;
-    for (const char& c : type) {
-        if (type_str_len) {
-            if (std::isdigit(c)) {
-                type_str += c;
-                continue;
-            } else if (c=='[') {
-                type_str += '_';
-            }else if (c == ']' || std::isblank(c)){
-                continue;
-            } else {
-                return false;
-            }
-        } else {
-            if (std::isalnum(c)) {
-                type_str += c;
-                continue;
-            } else if (c == '[') {
-                type_str_len = type_str.length();
-                type_str += '_';
-                continue;
-            } else {
-                return false;
-            }
-        }
-    }
-    std::string name_str = "";
-    unsigned int name_str_len = 0;
-    for (const char& c : name) {
-        if (c == ';') {
-            break;
-        }
-        if (name_str_len) {
-            if (std::isdigit(c)) {
-                type_str.insert(type_str_len, 1, c);
-                type_str_len++;
-                continue;
-            } else if (c=='[') {
-                type_str.insert(type_str_len, "_");
-                type_str_len++;
-                continue;
-            }else if (c == ']' || std::isblank(c)){
-                continue;
-            } else {
-                return false;
-            }
-        } else {
-            if (std::isalnum(c)) {
-                name_str += c;
-                continue;
-            } else if ( c == '[') {
-                name_str_len = name_str.length();
-                type_str.insert(type_str_len, "_");
-                type_str_len++;
-                continue;
-            } else {
-                return false;
-            }
-        }
-    }
-    shad.uniforms.push_back(UniformHandle{
-        name_str,
-        type_str,
-        0x0,
-        0x0
-    });
-    return true;
-} */
-
-
-// ShaderProgram
-
-ShaderProgram::ShaderProgram(ShaderProgram&& rhs) {
-    _shader_units = rhs._shader_units;
-    _id = rhs._id;
-    rhs._id = 0;
-}
-
-ShaderProgram::~ShaderProgram() {
-    glDeleteProgram(_id);
-}
-
-ShaderProgram& ShaderProgram::operator=(ShaderProgram&& rhs) {
-    _shader_units = rhs._shader_units;
-    _id = rhs._id;
-    rhs._id = 0;
-    return *this;
-}
-
-
-ShaderProgram ShaderProgram::CreateShaderProgram(std::vector<ShaderUnit>& shaders) {
-    int success;
-    ShaderProgram ret(shaders);
-    char infoLog[512];
-    unsigned int shad_id;
-    std::vector<unsigned int> shad_ids;
-    shad_ids.reserve(shaders.size());
-    for (auto& shad : ret._shader_units) {
-        const char* source = shad.preprocSource.data();
-        shad_id = glCreateShader(shad.type);
-        shad_ids.emplace_back(shad_id);
-        glShaderSource(shad_id, 1, &source, NULL);
-        glCompileShader(shad_id);
-        glGetShaderiv(shad_id, GL_COMPILE_STATUS, &success);
-        if (!success) {
-            glGetShaderInfoLog(shad_id, 512, NULL, infoLog);
-            File::FilePath& fp = shad.file.path;
-            std::string filename = fp.dir + fp.basename + fp.ext;
-            // std::cout << "Could not compile '" + filename + "': " << infoLog << "\n";
-            // return *ret;
-            throw ShaderError("Could not compile '" + filename + "'.", infoLog);
-        }
-    }
-    
-    ret._id = glCreateProgram();
-    for(auto& id : shad_ids) {
-        glAttachShader(ret._id, id);
-    }
-    glLinkProgram(ret._id);
-    glGetProgramiv(ret._id, GL_LINK_STATUS, &success);
-    if (!success) {
-        glGetProgramInfoLog(ret._id, 512, NULL, infoLog);
-        throw ShaderError("Could not link shader program.", infoLog);
-    }
-    for (auto& id : shad_ids) {
-        glDeleteShader(id);
-    }
-    return ret;
-}
-
-unsigned int ShaderProgram::id() const { return _id; }
-
-void ShaderProgram::use() const {
-    glUseProgram(_id);
-}
-
-std::vector<ShaderUnit> ShaderProgram::getShaders() const {
-    return _shader_units;
-}
-
-ShaderUnit ShaderProgram::getShaders(unsigned int idx) const {
-    return _shader_units[idx];
-}
-
-void ShaderProgram::setBool(const std::string& name, bool value) const {
-    glUniform1i(glGetUniformLocation(_id, name.c_str()), (int)value);
-}
-
-void ShaderProgram::setInt(const std::string& name, int value) const {
-    glUniform1i(glGetUniformLocation(_id, name.c_str()), (int)value);
-}
-
-void ShaderProgram::setFloat(const std::string& name, float value) const {
-    glUniform1f(glGetUniformLocation(_id, name.c_str()), (int)value);
-}
-
-void ShaderProgram::setMat4(const std::string& name, glm::mat4& value) const {
-    glUniformMatrix4fv(glGetUniformLocation(_id, name.c_str()), 1, GL_FALSE, glm::value_ptr(value));
-} 
-
-/* // Shader class
-Shader::Shader() { _id = 0x0; }
-
-Shader::Shader(const Shader& cpy_shader) { _id = cpy_shader._id; }
-
-Shader& Shader::operator=(const Shader& cpy_shader) { _id = cpy_shader._id; return *this; }
-
-void Shader::use() const{
-    glUseProgram(_id);
-}
-
-*/
-
-}

engine/NBGraphics/tests/CMakeLists.txt

@@ -0,0 +1,14 @@
+cmake_minimum_required(VERSION 3.26.0)
+
+if (NB_BUILD_TESTS)
+    enable_testing()
+    include(GoogleTest)
+    add_executable(TestWindow
+        ./TestWindow.cpp
+    )
+    target_link_libraries(TestWindow
+        NBCore
+        NBGraphics
+    )
+
+endif()

engine/NBGraphics/tests/TestWindow.cpp

@@ -0,0 +1,62 @@
+#include "GLLoad.hpp"
+#include "ProgramPipeline.hpp"
+#include "VertexArray.hpp"
+#include "Window.hpp"
+
+int main() {
+    nb::logger.log("Howdy!");
+    nb::Window window(200, 200, "Hello!");
+    window.setWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+    window.setWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
+    window.init();
+
+    nb::logger.log("Goob");
+
+    auto vert = std::make_shared<nb::Shader>(
+        GL_VERTEX_SHADER,
+        "#version 330 core\n"
+        "layout (location = 0) in vec2 aPos;\n"
+        "void main()\n"
+        "{\n"
+        "   gl_Position = vec4(aPos.x, aPos.y, 0.0, 1.0);\n"
+        "}\0"
+    );
+
+    LOG("Vertex Shader: " + vert->log());
+
+    auto frag = std::make_shared<nb::Shader>(
+        GL_FRAGMENT_SHADER,
+        "#version 330 core\n"
+        "out vec4 FragColor;\n"
+        "void main()\n"
+        "{\n"
+        "   FragColor = vec4(1.0f, 0.5f, 0.2f, 1.0f);\n"
+        "}\n\0"
+    );
+
+    LOG("Fragment shader: " + frag->log());
+
+    nb::ByteVector data = nb::vectorToBytes<float>({
+       -0.5, -0.5, 0.5, -0.5, 0.0, 0.5 
+    });
+
+    nb::Program prog({vert, frag});
+    prog.bind();
+
+    nb::VertexGroup tri(data, {
+        nb::VertexAttribute{
+            2,
+            GL_FLOAT,
+            false,
+            {0, 8}
+        }
+    });
+    tri.bind();
+
+    GLFWwindow* window_ptr = window.getWindow();
+    while(!glfwWindowShouldClose(window_ptr)) {
+        glDrawArrays(GL_TRIANGLES, 0, 3);
+    }    
+
+    return 0;
+}