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// Copyright 2018 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_VULKANBACKEND_H_
#define DAWNNATIVE_VULKANBACKEND_H_
#include <dawn/dawn_wsi.h>
#include <dawn_native/DawnNative.h>
#include <vulkan/vulkan.h>
#include <vector>
namespace dawn_native { namespace vulkan {
DAWN_NATIVE_EXPORT VkInstance GetInstance(WGPUDevice device);
DAWN_NATIVE_EXPORT PFN_vkVoidFunction GetInstanceProcAddr(WGPUDevice device, const char* pName);
DAWN_NATIVE_EXPORT DawnSwapChainImplementation
CreateNativeSwapChainImpl(WGPUDevice device, ::VkSurfaceKHR surface);
DAWN_NATIVE_EXPORT WGPUTextureFormat
GetNativeSwapChainPreferredFormat(const DawnSwapChainImplementation* swapChain);
// Can't use DAWN_PLATFORM_LINUX since header included in both dawn and chrome
#ifdef __linux__
// Common properties of external images represented by FDs
struct DAWN_NATIVE_EXPORT ExternalImageDescriptorFD : ExternalImageDescriptor {
public:
int memoryFD; // A file descriptor from an export of the memory of the image
std::vector<int> waitFDs; // File descriptors of semaphores which will be waited on
protected:
ExternalImageDescriptorFD(ExternalImageDescriptorType type);
};
// Descriptor for opaque file descriptor image import
struct DAWN_NATIVE_EXPORT ExternalImageDescriptorOpaqueFD : ExternalImageDescriptorFD {
ExternalImageDescriptorOpaqueFD();
VkDeviceSize allocationSize; // Must match VkMemoryAllocateInfo from image creation
uint32_t memoryTypeIndex; // Must match VkMemoryAllocateInfo from image creation
};
// Descriptor for dma-buf file descriptor image import
struct DAWN_NATIVE_EXPORT ExternalImageDescriptorDmaBuf : ExternalImageDescriptorFD {
ExternalImageDescriptorDmaBuf();
uint32_t stride; // Stride of the buffer in bytes
uint64_t drmModifier; // DRM modifier of the buffer
};
// Exports a signal semaphore from a wrapped texture. This must be called on wrapped
// textures before they are destroyed. On failure, returns -1
DAWN_NATIVE_EXPORT int ExportSignalSemaphoreOpaqueFD(WGPUDevice cDevice,
WGPUTexture cTexture);
// Imports external memory into a Vulkan image. Internally, this uses external memory /
// semaphore extensions to import the image and wait on the provided synchronizaton
// primitives before the texture can be used.
// On failure, returns a nullptr.
DAWN_NATIVE_EXPORT WGPUTexture WrapVulkanImage(WGPUDevice cDevice,
const ExternalImageDescriptor* descriptor);
#endif // __linux__
}} // namespace dawn_native::vulkan
#endif // DAWNNATIVE_VULKANBACKEND_H_
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