render_pass_mtl.h

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// 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_RENDERER_BACKEND_METAL_RENDER_PASS_MTL_H_
#define FLUTTER_IMPELLER_RENDERER_BACKEND_METAL_RENDER_PASS_MTL_H_
 
#include <Metal/Metal.h>
 
#include "flutter/fml/macros.h"
#include "impeller/renderer/render_pass.h"
#include "impeller/renderer/render_target.h"
 
namespace impeller {
 
class RenderPassMTL final : public RenderPass {
 public:
  // |RenderPass|
  ~RenderPassMTL() override;
 
 private:
  friend class CommandBufferMTL;
 
  id<MTLCommandBuffer> buffer_ = nil;
  MTLRenderPassDescriptor* desc_ = nil;
  std::string label_;
  bool is_valid_ = false;
 
  RenderPassMTL(std::weak_ptr<const Context> context,
                const RenderTarget& target,
                id<MTLCommandBuffer> buffer);
 
  // |RenderPass|
  bool IsValid() const override;
 
  // |RenderPass|
  void OnSetLabel(std::string label) override;
 
  // |RenderPass|
  bool OnEncodeCommands(const Context& context) const override;
 
  bool EncodeCommands(const std::shared_ptr<Allocator>& transients_allocator,
                      id<MTLRenderCommandEncoder> pass) const;
 
  RenderPassMTL(const RenderPassMTL&) = delete;
 
  RenderPassMTL& operator=(const RenderPassMTL&) = delete;
};
 
}  // namespace impeller
 
#endif  // FLUTTER_IMPELLER_RENDERER_BACKEND_METAL_RENDER_PASS_MTL_H_