VertexArray.cpp

#include "VertexArray.h"

VertexArray::VertexArray()
{
    glGenVertexArrays(1, &vao_);
    glBindVertexArray(vao_);
    unbind();
}

VertexArray::~VertexArray()
{
    unbind();
    glDeleteVertexArrays(1, &vao_);
}

void VertexArray::bind() const
{
    glBindVertexArray(vao_);
}

void VertexArray::unbind() const
{
    glBindVertexArray(0);
}
                           //layout location, whether the vert attr is a vec3(so 3 values) etc.., then type of data(GL_FLOAT), dont normalize values, then stride, then offset
void VertexArray::addVertexBufferData(int location, int sizeOfVertexAttr, int dataType, int stride, int offset)
{
    glEnableVertexAttribArray(location); //vertex attrib loc to enable in the vertex shader
    glVertexAttribPointer(location, sizeOfVertexAttr, dataType, GL_FALSE, stride, (void*)offset);
}