dl_atlas_geometry.h

Go to the documentation of this file.

// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#ifndef FLUTTER_IMPELLER_DISPLAY_LIST_DL_ATLAS_GEOMETRY_H_
#define FLUTTER_IMPELLER_DISPLAY_LIST_DL_ATLAS_GEOMETRY_H_
 
#include "display_list/dl_color.h"
#include "display_list/image/dl_image.h"
#include "impeller/core/sampler_descriptor.h"
#include "impeller/entity/contents/atlas_contents.h"
#include "impeller/geometry/color.h"
 
namespace impeller {
 
/// @brief A wrapper around data provided by a drawAtlas call.
class DlAtlasGeometry : public AtlasGeometry {
 public:
  DlAtlasGeometry(const std::shared_ptr<Texture>& atlas,
                  const RSTransform* xform,
                  const flutter::DlRect* tex,
                  const flutter::DlColor* colors,
                  size_t count,
                  BlendMode mode,
                  const SamplerDescriptor& sampling,
                  std::optional<Rect> cull_rect);
 
  ~DlAtlasGeometry();
 
  /// @brief Whether the blend shader should be used.
  bool ShouldUseBlend() const override;
 
  bool ShouldSkip() const override;
 
  VertexBuffer CreateSimpleVertexBuffer(HostBuffer& host_buffer) const override;
 
  VertexBuffer CreateBlendVertexBuffer(HostBuffer& host_buffer) const override;
 
  Rect ComputeBoundingBox() const override;
 
  const std::shared_ptr<Texture>& GetAtlas() const override;
 
  const SamplerDescriptor& GetSamplerDescriptor() const override;
 
  BlendMode GetBlendMode() const override;
 
 private:
  const std::shared_ptr<Texture> atlas_;
  const RSTransform* xform_;
  const flutter::DlRect* tex_;
  const flutter::DlColor* colors_;
  size_t count_;
  BlendMode mode_;
  SamplerDescriptor sampling_;
  mutable std::optional<Rect> cull_rect_;
};
 
}  // namespace impeller
 
#endif  // FLUTTER_IMPELLER_DISPLAY_LIST_DL_ATLAS_GEOMETRY_H_