blob: 0e795e8d53384a21ac2d7d60e755e70f59dc8704 [file] [log] [blame]
// Copyright 2019 The SwiftShader Authors. All Rights Reserved.
//
// 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.
#include "Driver.hpp"
#if defined(_WIN32)
# include "Windows.h"
# define OS_WINDOWS 1
#elif defined(__APPLE__)
# include "dlfcn.h"
# define OS_MAC 1
#elif defined(__ANDROID__)
# include "dlfcn.h"
# define OS_ANDROID 1
#elif defined(__linux__)
# include "dlfcn.h"
# define OS_LINUX 1
#elif defined(__Fuchsia__)
# include <zircon/dlfcn.h>
# define OS_FUCHSIA 1
#else
# error Unimplemented platform
#endif
Driver::Driver() : vk_icdGetInstanceProcAddr(nullptr), dll(nullptr)
{
#define VK_GLOBAL(N, R, ...) N = nullptr
#include "VkGlobalFuncs.hpp"
#undef VK_GLOBAL
#define VK_INSTANCE(N, R, ...) N = nullptr
#include "VkInstanceFuncs.hpp"
#undef VK_INSTANCE
}
Driver::~Driver()
{
unload();
}
bool Driver::loadSwiftShader()
{
#if OS_WINDOWS
#if !defined(STANDALONE)
// The DLL is delay loaded (see BUILD.gn), so we can load
// the correct ones from Chrome's swiftshader subdirectory.
HMODULE libvulkan = LoadLibraryA("swiftshader\\libvulkan.dll");
EXPECT_NE((HMODULE)NULL, libvulkan);
return true;
#elif defined(NDEBUG)
#if defined(_WIN64)
return load("./build/Release_x64/vk_swiftshader.dll") ||
load("./build/Release/vk_swiftshader.dll") ||
load("./vk_swiftshader.dll");
#else
return load("./build/Release_Win32/vk_swiftshader.dll") ||
load("./build/Release/vk_swiftshader.dll") ||
load("./vk_swiftshader.dll");
#endif
#else
#if defined(_WIN64)
return load("./build/Debug_x64/vk_swiftshader.dll") ||
load("./build/Debug/vk_swiftshader.dll") ||
load("./vk_swiftshader.dll");
#else
return load("./build/Debug_Win32/vk_swiftshader.dll") ||
load("./build/Debug/vk_swiftshader.dll") ||
load("./vk_swiftshader.dll");
#endif
#endif
#elif OS_MAC
return load("./build/Darwin/libvk_swiftshader.dylib") ||
load("swiftshader/libvk_swiftshader.dylib") ||
load("libvk_swiftshader.dylib");
#elif OS_LINUX
return load("./build/Linux/libvk_swiftshader.so") ||
load("swiftshader/libvk_swiftshader.so") ||
load("./libvk_swiftshader.so") ||
load("libvk_swiftshader.so");
#elif OS_ANDROID || OS_FUCHSIA
return load("libvk_swiftshader.so");
#else
#error Unimplemented platform
#endif
}
bool Driver::loadSystem()
{
#if OS_LINUX
return load("libvulkan.so.1");
#else
return false;
#endif
}
bool Driver::load(const char* path)
{
#if OS_WINDOWS
dll = LoadLibraryA(path);
#elif(OS_MAC || OS_LINUX || OS_ANDROID || OS_FUCHSIA)
dll = dlopen(path, RTLD_LAZY | RTLD_LOCAL);
#else
return false;
#endif
if(dll == nullptr)
{
return false;
}
// Is the driver an ICD?
if(!lookup(&vk_icdGetInstanceProcAddr, "vk_icdGetInstanceProcAddr"))
{
// Nope, attempt to use the loader version.
if(!lookup(&vk_icdGetInstanceProcAddr, "vkGetInstanceProcAddr"))
{
return false;
}
}
#define VK_GLOBAL(N, R, ...) \
if(auto pfn = vk_icdGetInstanceProcAddr(nullptr, #N)) \
{ \
N = reinterpret_cast<decltype(N)>(pfn); \
}
#include "VkGlobalFuncs.hpp"
#undef VK_GLOBAL
return true;
}
void Driver::unload()
{
if(!isLoaded())
{
return;
}
#if OS_WINDOWS
FreeLibrary((HMODULE)dll);
#elif (OS_LINUX || OS_FUCHSIA)
dlclose(dll);
#endif
#define VK_GLOBAL(N, R, ...) N = nullptr
#include "VkGlobalFuncs.hpp"
#undef VK_GLOBAL
#define VK_INSTANCE(N, R, ...) N = nullptr
#include "VkInstanceFuncs.hpp"
#undef VK_INSTANCE
}
bool Driver::isLoaded() const
{
return dll != nullptr;
}
bool Driver::resolve(VkInstance instance)
{
if(!isLoaded())
{
return false;
}
#define VK_INSTANCE(N, R, ...) \
if(auto pfn = vk_icdGetInstanceProcAddr(instance, #N)) \
{ \
N = reinterpret_cast<decltype(N)>(pfn); \
} \
else \
{ \
return false; \
}
#include "VkInstanceFuncs.hpp"
#undef VK_INSTANCE
return true;
}
void* Driver::lookup(const char* name)
{
#if OS_WINDOWS
return GetProcAddress((HMODULE)dll, name);
#elif(OS_MAC || OS_LINUX || OS_ANDROID || OS_FUCHSIA)
return dlsym(dll, name);
#else
return nullptr;
#endif
}