#include "OpenGLUniformBuffer.h"

namespace Donut
{
    OpenGLUniformBuffer::OpenGLUniformBuffer(uint32_t size, uint32_t binding)
        : m_Size(size), m_Binding(binding)
    {
        glGenBuffers(1, &m_RendererID);
        glBindBuffer(GL_UNIFORM_BUFFER, m_RendererID);
        glBufferData(GL_UNIFORM_BUFFER, size, nullptr, GL_DYNAMIC_DRAW);
        glBindBufferBase(GL_UNIFORM_BUFFER, binding, m_RendererID);
    }

    OpenGLUniformBuffer::~OpenGLUniformBuffer()
    {
        glDeleteBuffers(1, &m_RendererID);
    }

    void OpenGLUniformBuffer::SetData(const void* data, uint32_t size, uint32_t offset)
    {
        glBindBuffer(GL_UNIFORM_BUFFER, m_RendererID);
        glBufferSubData(GL_UNIFORM_BUFFER, offset, size, data);
    }

    void OpenGLUniformBuffer::Bind(uint32_t binding)
    {
        glBindBufferBase(GL_UNIFORM_BUFFER, binding, m_RendererID);
    }
};