void DoCleanup()
{
if (_context != null)
{
using (_context.MakeCurrent())
{
var gl = _context.GlInterface;
gl.BindTexture(GL_TEXTURE_2D, 0);
gl.BindFramebuffer(GL_FRAMEBUFFER, 0);
gl.DeleteFramebuffers(1, new[] { _fb });
_fb = 0;
gl.DeleteRenderbuffers(1, new[] { _depthBuffer });
_depthBuffer = 0;
_attachment?.Dispose();
_attachment = null;
_bitmap?.Dispose();
_bitmap = null;
try
{
if (_initialized)
{
_initialized = false;
OnOpenGlDeinit(_context.GlInterface, _fb);
}
}
finally
{
_context.Dispose();
_context = null;
}
}
}
}
void EnsureTextureAttachment()
{
_context.GlInterface.BindFramebuffer(GL_FRAMEBUFFER, _fb);
if (_bitmap == null || _attachment == null || _bitmap.PixelSize != GetPixelSize())
{
_attachment?.Dispose();
_attachment = null;
_bitmap?.Dispose();
_bitmap = null;
_bitmap = new OpenGlBitmap(GetPixelSize(), new Vector(96, 96));
_attachment = _bitmap.CreateFramebufferAttachment(_context);
}
}
