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// Copyright 2019 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef DAWNNATIVE_VULKAN_EXTERNALMEMORY_SERVICE_H_
#define DAWNNATIVE_VULKAN_EXTERNALMEMORY_SERVICE_H_
#include "common/vulkan_platform.h"
#include "dawn_native/Error.h"
#include "dawn_native/VulkanBackend.h"
#include "dawn_native/vulkan/ExternalHandle.h"
namespace dawn::native::vulkan {
class Device;
struct VulkanDeviceInfo;
} // namespace dawn::native::vulkan
namespace dawn::native { namespace vulkan::external_memory {
struct MemoryImportParams {
VkDeviceSize allocationSize;
uint32_t memoryTypeIndex;
};
class Service {
public:
explicit Service(Device* device);
~Service();
static bool CheckSupport(const VulkanDeviceInfo& deviceInfo);
// True if the device reports it supports importing external memory.
bool SupportsImportMemory(VkFormat format,
VkImageType type,
VkImageTiling tiling,
VkImageUsageFlags usage,
VkImageCreateFlags flags);
// True if the device reports it supports creating VkImages from external memory.
bool SupportsCreateImage(const ExternalImageDescriptor* descriptor,
VkFormat format,
VkImageUsageFlags usage,
bool* supportsDisjoint);
// Returns the parameters required for importing memory
ResultOrError<MemoryImportParams> GetMemoryImportParams(
const ExternalImageDescriptor* descriptor,
VkImage image);
// Given an external handle pointing to memory, import it into a VkDeviceMemory
ResultOrError<VkDeviceMemory> ImportMemory(ExternalMemoryHandle handle,
const MemoryImportParams& importParams,
VkImage image);
// Create a VkImage for the given handle type
ResultOrError<VkImage> CreateImage(const ExternalImageDescriptor* descriptor,
const VkImageCreateInfo& baseCreateInfo);
private:
Device* mDevice = nullptr;
// True if early checks pass that determine if the service is supported
bool mSupported = false;
};
}} // namespace dawn::native::vulkan::external_memory
#endif // DAWNNATIVE_VULKAN_EXTERNALMEMORY_SERVICE_H_