ShaderStorageBuffer.cpp

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#include "ShaderStorageBuffer.hpp"
 
namespace galaxy
{
    namespace graphics
    {
        ShaderStorageBuffer::ShaderStorageBuffer(const int index)
            : m_id {0}
            , m_index {index}
        {
            glCreateBuffers(1, &m_id);
        }
 
        ShaderStorageBuffer::ShaderStorageBuffer(ShaderStorageBuffer&& s)
        {
            if (this->m_id != 0)
            {
                glDeleteBuffers(1, &this->m_id);
            }
 
            this->m_index = s.m_index;
            this->m_id    = s.m_id;
            s.m_id        = 0;
        }
 
        ShaderStorageBuffer& ShaderStorageBuffer::operator=(ShaderStorageBuffer&& s)
        {
            if (this != &s)
            {
                if (this->m_id != 0)
                {
                    glDeleteBuffers(1, &this->m_id);
                }
 
                this->m_index = s.m_index;
                this->m_id    = s.m_id;
                s.m_id        = 0;
            }
 
            return *this;
        }
 
        ShaderStorageBuffer::~ShaderStorageBuffer()
        {
            if (m_id != 0)
            {
                glDeleteBuffers(1, &m_id);
            }
        }
 
        void ShaderStorageBuffer::bind() const
        {
            glBindBufferBase(GL_SHADER_STORAGE_BUFFER, m_index, m_id);
        }
 
        void ShaderStorageBuffer::clear()
        {
            auto size = 0;
 
            glGetNamedBufferParameteriv(m_id, GL_BUFFER_SIZE, &size);
            glNamedBufferData(m_id, size, nullptr, GL_DYNAMIC_DRAW);
        }
 
        unsigned int ShaderStorageBuffer::id() const
        {
            return m_id;
        }
    } // namespace graphics
} // namespace galaxy