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/*
* Copyright 2015 The Android Open Source Project
*
* 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 ANDROID_HWVULKAN_H
#define ANDROID_HWVULKAN_H
#include <hardware/hardware.h>
#include <vulkan/vulkan.h>
__BEGIN_DECLS
#define HWVULKAN_HARDWARE_MODULE_ID "vulkan"
#define HWVULKAN_MODULE_API_VERSION_0_1 HARDWARE_MODULE_API_VERSION(0, 1)
#define HWVULKAN_DEVICE_API_VERSION_0_1 HARDWARE_DEVICE_API_VERSION_2(0, 1, 0)
#define HWVULKAN_DEVICE_0 "vk0"
typedef struct hwvulkan_module_t {
struct hw_module_t common;
} hwvulkan_module_t;
/* Dispatchable Vulkan object handles must be pointers, which must point to
* instances of hwvulkan_dispatch_t (potentially followed by additional
* implementation-defined data). On return from the creation function, the
* 'magic' field must contain HWVULKAN_DISPATCH_MAGIC; the loader will overwrite
* the 'vtbl' field.
*
* NOTE: The magic value and the layout of hwvulkan_dispatch_t match the LunarG
* loader used on platforms, to avoid pointless annoying differences for
* multi-platform drivers. Don't change them without a good reason. If there is
* an opportunity to change it, using a magic value that doesn't leave the
* upper 32-bits zero on 64-bit platforms would be nice.
*/
#define HWVULKAN_DISPATCH_MAGIC 0x01CDC0DE
typedef union {
uintptr_t magic;
const void* vtbl;
} hwvulkan_dispatch_t;
/* A hwvulkan_device_t corresponds to an ICD on other systems. Currently there
* can only be one on a system (HWVULKAN_DEVICE_0). It is opened once per
* process when the Vulkan API is first used; the hw_device_t::close() function
* is never called. Any non-trivial resource allocation should be done when
* the VkInstance is created rather than when the hwvulkan_device_t is opened.
*/
typedef struct hwvulkan_device_t {
struct hw_device_t common;
PFN_vkEnumerateInstanceExtensionProperties
EnumerateInstanceExtensionProperties;
PFN_vkCreateInstance CreateInstance;
PFN_vkGetInstanceProcAddr GetInstanceProcAddr;
} hwvulkan_device_t;
__END_DECLS
#endif // ANDROID_HWVULKAN_H
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