void* OGLGraphicsBuffer::Map(BufferAccess ba)
{
GLenum flag = 0;
switch (ba)
{
case BA_Read_Only:
flag = GL_READ_ONLY;
break;
case BA_Write_Only:
flag = GL_WRITE_ONLY;
break;
case BA_Read_Write:
flag = GL_READ_WRITE;
break;
}
void* p;
if (glloader_GL_EXT_direct_state_access())
{
p = glMapNamedBufferEXT(vb_, flag);
}
else
{
OGLRenderEngine& re = *checked_cast<OGLRenderEngine*>(&Context::Instance().RenderFactoryInstance().RenderEngineInstance());
re.BindBuffer(target_, vb_);
p = glMapBuffer(target_, flag);
}
return p;
}
void* Buffer::map(GLenum access)
{
if (m_directStateAccess)
{
void* result = glMapNamedBufferEXT(m_id, access);
CheckGLError();
return result;
}
else
{
bind();
void* result = glMapBuffer(m_target, access);
CheckGLError();
return result;
}
}
void * BufferImplementation_DirectStateAccessEXT::map(const Buffer * buffer, GLenum access) const
{
return glMapNamedBufferEXT(buffer->id(), access);
}
