void operator()(const Particles& particles)
{
gl.Enable(Capability::Blend);
gl.Bind(vao);
gl.Use(prog);
gl.DrawElements(PrimitiveType::Points, particles.Count(), (GLuint*)0);
gl.Disable(Capability::Blend);
}
void operator()(const Particles& particles)
{
gl.Bind(vao);
gl.Use(prog);
xfb.BeginPoints();
gl.DrawArrays(PrimitiveType::Points, 0, particles.Count());
xfb.End();
}
void operator()(const Particles& particles)
{
gl.Bind(vao);
gl.Use(prog);
for(GLuint p=0; p!=particles.sort_nw.PassCount(); ++p)
{
Buffer::CopySubData(
BufferTarget::CopyRead,
BufferTarget::CopyWrite,
0, 0, particles.Count()*sizeof(GLuint)
);
prog.pass.Set(p);
xfb.BeginPoints();
gl.DrawArrays(PrimitiveType::Points, 0, particles.Count());
xfb.End();
}
Buffer::CopySubData(
BufferTarget::CopyRead,
BufferTarget::CopyWrite,
0, 0, particles.Count()*sizeof(GLint)
);
}