allocator_gles.cc

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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.
 
#include "impeller/renderer/backend/gles/allocator_gles.h"
 
#include <memory>
 
#include "impeller/base/allocation.h"
#include "impeller/base/config.h"
#include "impeller/renderer/backend/gles/device_buffer_gles.h"
#include "impeller/renderer/backend/gles/texture_gles.h"
 
namespace impeller {
 
AllocatorGLES::AllocatorGLES(std::shared_ptr<ReactorGLES> reactor)
    : reactor_(std::move(reactor)), is_valid_(true) {}
 
// |Allocator|
AllocatorGLES::~AllocatorGLES() = default;
 
// |Allocator|
bool AllocatorGLES::IsValid() const {
  return is_valid_;
}
 
// |Allocator|
std::shared_ptr<DeviceBuffer> AllocatorGLES::OnCreateBuffer(
    const DeviceBufferDescriptor& desc) {
  auto backing_store = std::make_shared<Allocation>();
  if (!backing_store->Truncate(Bytes{desc.size})) {
    return nullptr;
  }
  return std::make_shared<DeviceBufferGLES>(desc,                     //
                                            reactor_,                 //
                                            std::move(backing_store)  //
  );
}
 
// |Allocator|
std::shared_ptr<Texture> AllocatorGLES::OnCreateTexture(
    const TextureDescriptor& desc) {
  return std::make_shared<TextureGLES>(reactor_, desc);
}
 
// |Allocator|
ISize AllocatorGLES::GetMaxTextureSizeSupported() const {
  return reactor_->GetProcTable().GetCapabilities()->max_texture_size;
}
 
}  // namespace impeller