Addded missing files

src/opengl/IndexBuffer.cpp

@@ -0,0 +1,26 @@
+#include "IndexBuffer.h"
+#include "Renderer.h"
+
+IndexBuffer::IndexBuffer(const unsigned int *data, unsigned int count) : m_Count(count)
+{
+  //Validate the fact that GLuint opengl datatype is defined as unsigned int for the current platform architecture
+  ASSERT(sizeof(unsigned int) == sizeof(GLuint));
+
+  GLCall(glGenBuffers(1, &m_RendererID));
+  GLCall(glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_RendererID));
+  GLCall(glBufferData(GL_ELEMENT_ARRAY_BUFFER, count * sizeof(unsigned int), data, GL_STATIC_DRAW));
+}
+
+IndexBuffer::~IndexBuffer()
+{
+  GLCall(glDeleteBuffers(1, &m_RendererID));
+}
+
+void IndexBuffer::Bind() const
+{
+  GLCall(glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_RendererID));
+}
+void IndexBuffer::Unbind() const
+{
+  GLCall(glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0));
+}

src/opengl/IndexBuffer.h

@@ -0,0 +1,16 @@
+#pragma once
+
+class IndexBuffer
+{
+private:
+  unsigned int m_RendererID;
+  unsigned int m_Count;
+
+public:
+  IndexBuffer(const unsigned int *data, unsigned int count);
+  ~IndexBuffer();
+
+  void Bind() const;
+  void Unbind() const;
+  inline unsigned int GetCount() const { return m_Count; }
+};

src/opengl/Renderer.cpp

@@ -0,0 +1,26 @@
+#include "Renderer.h"
+#include <iostream>
+
+//Discard error flags from openGL state machine
+void GLClearError()
+{
+  while (glGetError() != GL_NO_ERROR)
+    ;
+}
+
+bool GLLogCall(const char *function, const char *file, int line)
+{
+  while (GLenum error = glGetError())
+  {
+    std::cout << "[OpenGL error] ("
+              << error << "): " << function << " "
+              << file << ":" << line << std::endl;
+    return true;
+  }
+  return false;
+} 
+
+void ErrorGLCallback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, const void *userParam)
+{
+  std::cout << "Source: " << source << "Type: " << type << "Id: " << id << "Severity: " << severity << "Length: " << length << message << std::endl;
+}

src/opengl/Renderer.h

@@ -0,0 +1,25 @@
+#pragma once
+
+//Force the compilation process to statically link glew
+#define GLEW_STATIC
+
+#include "glew.h"
+#include <GLFW/glfw3.h>
+#include <csignal>
+
+
+//This should be review to integrate with debugger
+#define ASSERT(x) \
+  if (!(x))       \
+  std::raise(SIGTRAP)
+
+#define GLCall(x) \
+  GLClearError(); \
+  x;              \
+  ASSERT(GLLogCall(#x, __FILE__, __LINE__))
+
+//Discard error flags from openGL state machine
+void GLClearError();
+bool GLLogCall(const char *function, const char *file, int line);
+//This is just for OpenGL4.3 onwards
+void ErrorGLCallback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, const void *userParam);

src/opengl/VertexBuffer.cpp

@@ -0,0 +1,23 @@
+#include "VertexBuffer.h"
+#include "Renderer.h"
+
+VertexBuffer::VertexBuffer(const void *data, unsigned int size)
+{
+    GLCall(glGenBuffers(1, &m_RendererID));
+    GLCall(glBindBuffer(GL_ARRAY_BUFFER, m_RendererID));
+    GLCall(glBufferData(GL_ARRAY_BUFFER, size, data, GL_STATIC_DRAW));
+} 
+
+VertexBuffer::~VertexBuffer()
+{
+   GLCall(glDeleteBuffers(1,&m_RendererID));
+}
+
+void VertexBuffer::Bind() const
+{
+  GLCall(glBindBuffer(GL_ARRAY_BUFFER,m_RendererID));
+}
+void VertexBuffer::Unbind() const
+{
+  GLCall(glBindBuffer(GL_ARRAY_BUFFER,0));
+}

src/opengl/VertexBuffer.h

@@ -0,0 +1,15 @@
+#pragma once
+
+class VertexBuffer
+{
+private:
+  unsigned int m_RendererID;
+
+public:
+  VertexBuffer(const void* data, unsigned int size);
+  ~VertexBuffer();
+
+  void Bind() const;
+  void Unbind() const;
+};
+