overlay_antialiasing.hh

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/* SPDX-FileCopyrightText: 2019 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */

 
#pragma once
 
#include "overlay_base.hh"
 
#include "DNA_userdef_types.h"
 
namespace blender::draw::overlay {
 
class AntiAliasing : Overlay {
 private:
  PassSimple anti_aliasing_ps_ = {"AntiAliasing"};
 
  GPUFrameBuffer *framebuffer_ref_ = nullptr;
 
 public:
  void begin_sync(Resources &res, const State & /*state*/) final
  {
    if (res.is_selection()) {
      anti_aliasing_ps_.init();
      return;
    }
 
    const bool do_smooth_lines = (U.gpu_flag & USER_GPU_FLAG_OVERLAY_SMOOTH_WIRE) != 0;
 
    {
      PassSimple &pass = anti_aliasing_ps_;
      pass.init();
      pass.framebuffer_set(&framebuffer_ref_);
      pass.state_set(DRW_STATE_WRITE_COLOR | DRW_STATE_BLEND_ALPHA_PREMUL);
      pass.shader_set(res.shaders->anti_aliasing.get());
      pass.bind_ubo(OVERLAY_GLOBALS_SLOT, &res.globals_buf);
      pass.bind_ubo(DRW_CLIPPING_UBO_SLOT, &res.clip_planes_buf);
      pass.bind_texture("depth_tx", &res.depth_tx);
      pass.bind_texture("color_tx", &res.overlay_tx);
      pass.bind_texture("line_tx", &res.line_tx);
      pass.push_constant("do_smooth_lines", do_smooth_lines);
      pass.draw_procedural(GPU_PRIM_TRIS, 1, 3);
    }
  }
 
  void draw_output(Framebuffer &framebuffer, Manager &manager, View & /*view*/) final
  {
    framebuffer_ref_ = framebuffer;
    manager.submit(anti_aliasing_ps_);
  }
};
 
}  // namespace blender::draw::overlay