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// Copyright (c) 2018 The Chromium 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 GPU_VULKAN_VULKAN_INSTANCE_H_
#define GPU_VULKAN_VULKAN_INSTANCE_H_
#include <vulkan/vulkan_core.h>
#include <memory>
#include "base/check_op.h"
#include "base/component_export.h"
#include "base/files/file_path.h"
#include "base/native_library.h"
#include "gpu/config/vulkan_info.h"
#include "ui/gfx/extension_set.h"
namespace gpu {
class COMPONENT_EXPORT(VULKAN) VulkanInstance {
public:
VulkanInstance();
VulkanInstance(const VulkanInstance&) = delete;
VulkanInstance& operator=(const VulkanInstance&) = delete;
~VulkanInstance();
// Creates the vulkan instance.
//
// The extensions in |required_extensions| and the layers in |required_layers|
// will be enabled in the created instance. See the "Extended Functionality"
// section of vulkan specification for more information.
bool Initialize(const base::FilePath& vulkan_loader_library_path,
const std::vector<const char*>& required_extensions,
const std::vector<const char*>& required_layers);
// These are the steps of `Initialize`. Most caller can use Initialize
// directly. These are useful if unassigned functions are needed to compute
// `required_extensions` or `required_layers`.
bool BindUnassignedFunctionPointers(
const base::FilePath& vulkan_loader_library_path);
bool InitializeInstace(const std::vector<const char*>& required_extensions,
const std::vector<const char*>& required_layers);
const VulkanInfo& vulkan_info() const { return vulkan_info_; }
VkInstance vk_instance() { return vk_instance_; }
bool is_from_angle() const { return is_from_angle_; }
private:
bool CreateInstance(const std::vector<const char*>& required_extensions,
const std::vector<const char*>& required_layers);
bool InitializeFromANGLE(const std::vector<const char*>& required_extensions,
const std::vector<const char*>& required_layers);
bool CollectBasicInfo(const std::vector<const char*>& required_layers);
bool CollectDeviceInfo(VkPhysicalDevice physical_device = VK_NULL_HANDLE);
void Destroy();
const bool is_from_angle_;
VulkanInfo vulkan_info_;
base::NativeLibrary loader_library_ = nullptr;
VkInstance owned_vk_instance_ = VK_NULL_HANDLE;
VkInstance vk_instance_ = VK_NULL_HANDLE;
bool debug_report_enabled_ = false;
#if DCHECK_IS_ON()
VkDebugReportCallbackEXT error_callback_ = VK_NULL_HANDLE;
VkDebugReportCallbackEXT warning_callback_ = VK_NULL_HANDLE;
#endif
};
} // namespace gpu
#endif // GPU_VULKAN_VULKAN_INSTANCE_H_
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