Added vertex buffers/data handling and shader/program handling

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