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Updated cmake sources to TDesktop version 2.9.3

This commit is contained in:
Eric Kotato 2021-09-16 09:53:16 +03:00
commit f1ce909de8
16 changed files with 353 additions and 85 deletions

View file

@ -21,4 +21,8 @@ if (WIN32)
INTERFACE INTERFACE
desktop-app::win_directx_helper desktop-app::win_directx_helper
) )
target_compile_definitions(external_angle
INTERFACE
KHRONOS_STATIC
)
endif() endif()

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@ -18,28 +18,26 @@ endif()
if (NOT JEMALLOC_FOUND) if (NOT JEMALLOC_FOUND)
add_library(external_jemalloc_bundled STATIC IMPORTED GLOBAL) add_library(external_jemalloc_bundled STATIC IMPORTED GLOBAL)
set(jemalloc_loc ${third_party_loc}/jemalloc)
include(ExternalProject) include(ExternalProject)
ExternalProject_Add(jemalloc ExternalProject_Add(jemalloc
URL https://github.com/jemalloc/jemalloc/releases/download/5.2.1/jemalloc-5.2.1.tar.bz2 SOURCE_DIR ${jemalloc_loc}
CONFIGURE_COMMAND cd "${CMAKE_CURRENT_BINARY_DIR}/jemalloc-prefix/src/jemalloc" && ./configure CONFIGURE_COMMAND cd "${jemalloc_loc}" && ./autogen.sh
INSTALL_COMMAND : INSTALL_COMMAND :
BUILD_IN_SOURCE 1 BUILD_IN_SOURCE 1
BUILD_BYPRODUCTS ${CMAKE_CURRENT_BINARY_DIR}/jemalloc-prefix/src/jemalloc/lib/libjemalloc.a BUILD_BYPRODUCTS ${jemalloc_loc}/lib/libjemalloc.a
) )
ExternalProject_Get_property(jemalloc SOURCE_DIR) file(MAKE_DIRECTORY "${jemalloc_loc}/include")
ExternalProject_Get_property(jemalloc BINARY_DIR)
file(MAKE_DIRECTORY "${SOURCE_DIR}/include")
set_target_properties(external_jemalloc_bundled PROPERTIES set_target_properties(external_jemalloc_bundled PROPERTIES
IMPORTED_LOCATION "${BINARY_DIR}/lib/libjemalloc.a" IMPORTED_LOCATION "${jemalloc_loc}/lib/libjemalloc.a"
) )
target_include_directories(external_jemalloc_bundled SYSTEM target_include_directories(external_jemalloc_bundled SYSTEM
INTERFACE INTERFACE
${SOURCE_DIR}/include ${jemalloc_loc}/include
) )
target_link_libraries(external_jemalloc_bundled target_link_libraries(external_jemalloc_bundled

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@ -276,29 +276,6 @@ else()
INTERFACE INTERFACE
${qt_loc}/mkspecs/linux-g++ ${qt_loc}/mkspecs/linux-g++
) )
target_link_options(external_qt
INTERFACE
-static-libstdc++
-pthread
-rdynamic
)
if (DESKTOP_APP_USE_ALLOCATION_TRACER)
target_link_options(external_qt
INTERFACE
# -Wl,-wrap,__malloc
-Wl,-wrap,__libc_malloc
-Wl,-wrap,malloc
-Wl,-wrap,valloc
-Wl,-wrap,pvalloc
-Wl,-wrap,calloc
-Wl,-wrap,realloc
-Wl,-wrap,memalign
-Wl,-wrap,aligned_alloc
-Wl,-wrap,posix_memalign
-Wl,-wrap,free
-Wl,--no-as-needed,-lrt
)
endif()
target_link_static_libraries(external_qt target_link_static_libraries(external_qt
INTERFACE INTERFACE
proxy proxy
@ -320,13 +297,6 @@ else()
xcb-render-util xcb-render-util
xcb-keysyms xcb-keysyms
) )
if (DESKTOP_APP_USE_ALLOCATION_TRACER)
target_link_libraries(external_qt
INTERFACE
desktop-app::linux_allocation_tracer
$<TARGET_FILE:desktop-app::linux_allocation_tracer>
)
endif()
if (Qt5WaylandClient_FOUND) if (Qt5WaylandClient_FOUND)
target_link_libraries(external_qt target_link_libraries(external_qt
INTERFACE INTERFACE

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@ -18,19 +18,19 @@ endfunction()
function(init_target target_name) # init_target(my_target folder_name) function(init_target target_name) # init_target(my_target folder_name)
if (ARGC GREATER 1) if (ARGC GREATER 1)
if (${ARGV1} STREQUAL cxx_std_14 OR ${ARGV1} STREQUAL cxx_std_11 OR ${ARGV1} STREQUAL cxx_std_17) if (${ARGV1} STREQUAL cxx_std_14 OR ${ARGV1} STREQUAL cxx_std_11 OR ${ARGV1} STREQUAL cxx_std_17)
target_compile_features(${target_name} PUBLIC ${ARGV1}) target_compile_features(${target_name} PRIVATE ${ARGV1})
else() else()
target_compile_features(${target_name} PUBLIC ${MAXIMUM_CXX_STANDARD}) target_compile_features(${target_name} PRIVATE ${MAXIMUM_CXX_STANDARD})
init_target_folder(${target_name} ${ARGV1}) init_target_folder(${target_name} ${ARGV1})
endif() endif()
else() else()
target_compile_features(${target_name} PUBLIC ${MAXIMUM_CXX_STANDARD}) target_compile_features(${target_name} PRIVATE ${MAXIMUM_CXX_STANDARD})
endif() endif()
if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC") if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
set_target_properties(${target_name} PROPERTIES set_target_properties(${target_name} PROPERTIES
MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>") MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
endif() endif()
target_link_libraries(${target_name} PUBLIC desktop-app::common_options) target_link_libraries(${target_name} PRIVATE desktop-app::common_options)
if (NOT DESKTOP_APP_USE_PACKAGED) if (NOT DESKTOP_APP_USE_PACKAGED)
set_target_properties(${target_name} PROPERTIES LINK_SEARCH_START_STATIC 1) set_target_properties(${target_name} PROPERTIES LINK_SEARCH_START_STATIC 1)
endif() endif()

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@ -21,6 +21,4 @@ PRIVATE
linux_allocation_trace_reader.cpp linux_allocation_trace_reader.cpp
) )
target_link_options(allocation_trace_reader PRIVATE -static-libstdc++)
set_target_properties(allocation_trace_reader PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}) set_target_properties(allocation_trace_reader PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})

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@ -1,10 +1,9 @@
/* // This file is part of Desktop App Toolkit,
This file is part of Telegram Desktop, // a set of libraries for developing nice desktop applications.
the official desktop application for the Telegram messaging service. //
// For license and copyright information please follow this link:
For license and copyright information please follow this link: // https://github.com/desktop-app/legal/blob/master/LEGAL
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL //
*/
#include <iostream> #include <iostream>
#include <iomanip> #include <iomanip>
#include <locale> #include <locale>

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@ -1,10 +1,9 @@
/* // This file is part of Desktop App Toolkit,
This file is part of Telegram Desktop, // a set of libraries for developing nice desktop applications.
the official desktop application for the Telegram messaging service. //
// For license and copyright information please follow this link:
For license and copyright information please follow this link: // https://github.com/desktop-app/legal/blob/master/LEGAL
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL //
*/
#include "linux_allocation_tracer.h" #include "linux_allocation_tracer.h"
#include <atomic> #include <atomic>

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@ -1,10 +1,9 @@
/* // This file is part of Desktop App Toolkit,
This file is part of Telegram Desktop, // a set of libraries for developing nice desktop applications.
the official desktop application for the Telegram messaging service. //
// For license and copyright information please follow this link:
For license and copyright information please follow this link: // https://github.com/desktop-app/legal/blob/master/LEGAL
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL //
*/
#pragma once #pragma once
#include <cstdlib> #include <cstdlib>

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@ -69,7 +69,6 @@ function(nuget_add_webview target_name)
PRIVATE PRIVATE
${webview2_loc_native}/${webview2_lib_folder}/WebView2LoaderStatic.lib ${webview2_loc_native}/${webview2_lib_folder}/WebView2LoaderStatic.lib
) )
endfunction() endfunction()
function(nuget_add_winrt target_name) function(nuget_add_winrt target_name)

View file

@ -40,12 +40,8 @@ if (DESKTOP_APP_SPECIAL_TARGET)
target_compile_options(common_options INTERFACE -g0) target_compile_options(common_options INTERFACE -g0)
target_link_options(common_options INTERFACE -g0) target_link_options(common_options INTERFACE -g0)
else() else()
target_compile_options(common_options INTERFACE $<IF:$<CONFIG:Debug>,,-g>) target_compile_options(common_options INTERFACE $<IF:$<CONFIG:Debug>,,-g -flto>)
target_link_options(common_options INTERFACE $<IF:$<CONFIG:Debug>,,-g>) target_link_options(common_options INTERFACE $<IF:$<CONFIG:Debug>,,-g -flto -fuse-linker-plugin>)
if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
target_compile_options(common_options INTERFACE $<IF:$<CONFIG:Debug>,,-flto>)
target_link_options(common_options INTERFACE $<IF:$<CONFIG:Debug>,,-flto -fuse-linker-plugin>)
endif()
endif() endif()
endif() endif()
@ -54,6 +50,53 @@ INTERFACE
desktop-app::external_jemalloc desktop-app::external_jemalloc
) )
if (DESKTOP_APP_USE_ALLOCATION_TRACER)
target_link_options(common_options
INTERFACE
# -Wl,-wrap,__malloc
-Wl,-wrap,__libc_malloc
-Wl,-wrap,malloc
-Wl,-wrap,valloc
-Wl,-wrap,pvalloc
-Wl,-wrap,calloc
-Wl,-wrap,realloc
-Wl,-wrap,memalign
-Wl,-wrap,aligned_alloc
-Wl,-wrap,posix_memalign
-Wl,-wrap,free
-Wl,--no-as-needed,-lrt
)
target_link_libraries(common_options
INTERFACE
desktop-app::linux_allocation_tracer
$<TARGET_FILE:desktop-app::linux_allocation_tracer>
)
endif()
if (NOT DESKTOP_APP_USE_PACKAGED)
if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
target_link_options(common_options
INTERFACE
-static-libstdc++
)
elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
target_link_static_libraries(common_options
INTERFACE
c++
c++abi
)
target_link_options(common_options
INTERFACE
-nostdlib++
)
endif()
target_link_options(common_options
INTERFACE
-pthread
-rdynamic
)
endif()
if (DESKTOP_APP_USE_PACKAGED) if (DESKTOP_APP_USE_PACKAGED)
find_library(ATOMIC_LIBRARY atomic) find_library(ATOMIC_LIBRARY atomic)
else() else()

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@ -1,10 +1,9 @@
''' # This file is part of Desktop App Toolkit,
This file is part of Telegram Desktop, # a set of libraries for developing nice desktop applications.
the official desktop application for the Telegram messaging service. #
# For license and copyright information please follow this link:
# https://github.com/desktop-app/legal/blob/master/LEGAL
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
'''
import sys, os, shutil, subprocess import sys, os, shutil, subprocess
def run(project, arguments, buildType=''): def run(project, arguments, buildType=''):

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@ -0,0 +1,82 @@
# This file is part of Desktop App Toolkit,
# a set of libraries for developing nice desktop applications.
#
# For license and copyright information please follow this link:
# https://github.com/desktop-app/legal/blob/master/LEGAL
function(validate_d3d_error text)
if (NOT DESKTOP_APP_SPECIAL_TARGET STREQUAL "")
message(FATAL_ERROR ${text})
else()
message(WARNING ${text})
endif()
endfunction()
function(validate_d3d_compiler target_name)
if (build_win64)
set(modules_subdir x64)
else()
set(modules_subdir x86)
endif()
set(modules_hash_loc ${CMAKE_BINARY_DIR}/modules/${modules_subdir})
set(modules_debug_loc ${CMAKE_BINARY_DIR}/Debug/modules/${modules_subdir})
set(modules_release_loc ${CMAKE_BINARY_DIR}/Release/modules/${modules_subdir})
set(key_path ${modules_hash_loc}/d3d/d3dcompiler_47)
set(module_debug_path ${modules_debug_loc}/d3d)
set(module_release_path ${modules_release_loc}/d3d)
set(key "")
if (EXISTS ${key_path})
file(READ ${key_path} key)
endif()
if (NOT "$ENV{WindowsSdkDir}" STREQUAL "")
set(windows_sdk_loc $ENV{WindowsSdkDir} CACHE INTERNAL "Windows SDK Path" FORCE)
endif()
string(LENGTH "${key}" key_length)
if (NOT "${key_length}" STREQUAL "32"
OR NOT EXISTS ${module_debug_path}/d3dcompiler_47.dll
OR NOT EXISTS ${module_release_path}/d3dcompiler_47.dll)
if ("${windows_sdk_loc}" STREQUAL "")
validate_d3d_error("Could not find Windows SDK.")
return()
endif()
set(sdk_compiler ${windows_sdk_loc}/Redist/D3D/${modules_subdir}/d3dcompiler_47.dll)
find_package(Python REQUIRED)
execute_process(
COMMAND
${Python_EXECUTABLE}
${cmake_helpers_loc}/validate_d3d_compiler.py
${sdk_compiler}
OUTPUT_VARIABLE key
ERROR_VARIABLE error
)
if (NOT "${error}" STREQUAL "")
validate_d3d_error(${error})
return()
endif()
file(MAKE_DIRECTORY ${modules_debug_loc}/d3d)
file(COPY ${sdk_compiler} DESTINATION ${module_debug_path})
file(MAKE_DIRECTORY ${modules_release_loc}/d3d)
file(COPY ${sdk_compiler} DESTINATION ${module_release_path})
file(MAKE_DIRECTORY ${modules_hash_loc}/d3d)
file(WRITE ${key_path} ${key})
endif()
target_compile_definitions(${target_name}
PRIVATE
DESKTOP_APP_D3DCOMPILER_HASH=${key}
)
target_link_libraries(${target_name}
PRIVATE
desktop-app::external_openssl
)
endfunction()

35
validate_d3d_compiler.py Normal file
View file

@ -0,0 +1,35 @@
# This file is part of Desktop App Toolkit,
# a set of libraries for developing nice desktop applications.
#
# For license and copyright information please follow this link:
# https://github.com/desktop-app/legal/blob/master/LEGAL
from __future__ import print_function
import sys, os, re, hashlib
def error(*args, **kwargs):
print(*args, file=sys.stderr, **kwargs)
sys.exit(1)
try:
from win32api import GetFileVersionInfo
except ImportError:
error('Python module "pywin32" is not installed.\n\nTry "' + sys.executable + ' -m pip install pywin32".')
if len(sys.argv) < 2:
error('Expected input path to "d3dcompiler_47.dll".')
inputPath = sys.argv[1]
if not os.path.exists(inputPath):
error('File "' + inputPath + '" doesn\'t exist.')
info = GetFileVersionInfo(inputPath, '\\')
version = [ info['FileVersionMS'] // 65536, info['FileVersionMS'] % 65536, info['FileVersionLS'] // 65536, info['FileVersionLS'] % 65536 ]
if (version != [10, 0, 20348, 1 ]):
error('Bad "d3dcompiler_47.dll" version: ' + '.'.join(str(x) for x in version))
bufferSize = 1024 * 1024
sha256 = hashlib.sha256()
with open(inputPath, 'rb') as f:
print(hashlib.sha256(f.read()).hexdigest())

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@ -96,10 +96,16 @@ else()
report_bad_special_target() report_bad_special_target()
endif() endif()
endif() endif()
if (DESKTOP_APP_SPECIAL_TARGET AND CMAKE_CXX_COMPILER_ID STREQUAL "GNU") if (DESKTOP_APP_SPECIAL_TARGET)
set(CMAKE_AR "gcc-ar") if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
set(CMAKE_RANLIB "gcc-ranlib") set(CMAKE_AR "gcc-ar")
set(CMAKE_NM "gcc-nm") set(CMAKE_RANLIB "gcc-ranlib")
set(CMAKE_NM "gcc-nm")
elseif (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
set(CMAKE_AR "llvm-ar")
set(CMAKE_RANLIB "llvm-ranlib")
set(CMAKE_NM "llvm-nm")
endif()
endif() endif()
endif() endif()

View file

@ -12,3 +12,10 @@ nice_target_sources(win_directx_helper ${CMAKE_CURRENT_SOURCE_DIR}
PRIVATE PRIVATE
win_directx_helper.cpp win_directx_helper.cpp
) )
validate_d3d_compiler(win_directx_helper)
target_link_libraries(win_directx_helper
PUBLIC
desktop-app::external_openssl
)

View file

@ -7,15 +7,45 @@
#include <d3d9.h> #include <d3d9.h>
#include <d3d11.h> #include <d3d11.h>
#include <d3dcompiler.h>
extern "C" {
#include <openssl/sha.h>
} // extern "C"
#include <string> #include <string>
#include <vector>
#include <array>
#define LOAD_SYMBOL(handle, func) LoadSymbol(handle, #func, func) #define LOAD_SYMBOL(handle, func) LoadSymbol(handle, #func, func)
namespace DirectX { namespace DirectX {
namespace { namespace {
constexpr auto kMaxPathLong = 32767;
using Handle = HINSTANCE; using Handle = HINSTANCE;
// d3dcompiler_47.dll
HRESULT (__stdcall *D3DCompile)(
LPCVOID pSrcData,
SIZE_T SrcDataSize,
LPCSTR pFileName,
CONST D3D_SHADER_MACRO* pDefines,
ID3DInclude* pInclude,
LPCSTR pEntrypoint,
LPCSTR pTarget,
UINT Flags1,
UINT Flags2,
ID3DBlob** ppCode,
ID3DBlob** ppErrorMsgs);
HRESULT (__stdcall *D3DDisassemble)(
_In_reads_bytes_(SrcDataSize) LPCVOID pSrcData,
_In_ SIZE_T SrcDataSize,
_In_ UINT Flags,
_In_opt_ LPCSTR szComments,
_Out_ ID3DBlob** ppDisassembly);
// d3d9.dll // d3d9.dll
IDirect3D9 * (__stdcall *Direct3DCreate9)(UINT SDKVersion); IDirect3D9 * (__stdcall *Direct3DCreate9)(UINT SDKVersion);
@ -56,6 +86,102 @@ inline bool LoadSymbol(Handle handle, const char *name, Function &func) {
return (func != nullptr); return (func != nullptr);
} }
// For win_directx_helper.
std::string FileSha256(const wchar_t *path) {
using uchar = unsigned char;
constexpr auto kLimit = 10 * 1024 * 1024;
auto buffer = std::vector<uchar>(kLimit);
auto size = DWORD();
const auto file = CreateFile(
path,
GENERIC_READ,
FILE_SHARE_READ,
nullptr,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
nullptr);
if (file == INVALID_HANDLE_VALUE) {
return {};
}
const auto read = ReadFile(file, buffer.data(), kLimit, &size, nullptr);
CloseHandle(file);
if (!read || !size || size >= kLimit) {
return {};
}
auto binary = std::array<uchar, SHA256_DIGEST_LENGTH>{};
SHA256(buffer.data(), size, binary.data());
const auto hex = [](uchar value) {
return (value >= 10) ? ('a' + (value - 10)) : ('0' + value);
};
auto result = std::string();
result.reserve(binary.size() * 2);
auto index = 0;
for (const auto byte : binary) {
result.push_back(hex(byte / 16));
result.push_back(hex(byte % 16));
}
return result;
}
bool ResolveD3DCompiler(const wchar_t *path) {
const auto d3dcompiler = LoadLibrary(path);
return true
&& LOAD_SYMBOL(d3dcompiler, D3DCompile)
&& LOAD_SYMBOL(d3dcompiler, D3DDisassemble);
}
bool ResolveD3DCompiler() {
static const auto loaded = [] {
#ifdef DESKTOP_APP_D3DCOMPILER_HASH
auto exePath = std::array<WCHAR, kMaxPathLong + 1>{ 0 };
const auto exeLength = GetModuleFileName(
nullptr,
exePath.data(),
kMaxPathLong + 1);
if (!exeLength || exeLength >= kMaxPathLong + 1) {
return false;
}
const auto exe = std::wstring(exePath.data());
const auto last1 = exe.find_last_of('\\');
const auto last2 = exe.find_last_of('/');
const auto last = std::max(
(last1 == std::wstring::npos) ? -1 : int(last1),
(last2 == std::wstring::npos) ? -1 : int(last2));
if (last < 0) {
return false;
}
#if defined _WIN64
const auto arch = L"x64";
#elif defined _WIN32 // _WIN64
const auto arch = L"x86";
#else // _WIN64 || _WIN32
#error "Invalid configuration."
#endif // _WIN64 || _WIN32
#define DESKTOP_APP_STRINGIFY2(x) #x
#define DESKTOP_APP_STRINGIFY(x) DESKTOP_APP_STRINGIFY2(x)
const auto hash = DESKTOP_APP_STRINGIFY(DESKTOP_APP_D3DCOMPILER_HASH);
#undef DESKTOP_APP_STRINGIFY
#undef DESKTOP_APP_STRINGIFY2
const auto compiler = exe.substr(0, last + 1)
+ L"modules\\" + arch + L"\\d3d\\d3dcompiler_47.dll";
const auto path = compiler.c_str();
if (FileSha256(path) == hash && ResolveD3DCompiler(path)) {
return true;
}
#elif defined DESKTOP_APP_SPECIAL_TARGET // DESKTOP_APP_D3DCOMPILER_HASH
#error "Special target build should have d3dcompiler hash."
#endif // !DESKTOP_APP_D3DCOMPILER_HASH && DESKTOP_APP_SPECIAL_TARGET
return ResolveD3DCompiler(L"d3dcompiler_47.dll");
}();
return loaded;
}
bool ResolveD3D9() { bool ResolveD3D9() {
static const auto loaded = [] { static const auto loaded = [] {
const auto d3d9 = LoadLibrary(L"d3d9.dll"); const auto d3d9 = LoadLibrary(L"d3d9.dll");
@ -63,7 +189,7 @@ bool ResolveD3D9() {
LOAD_SYMBOL(d3d9, D3DPERF_EndEvent); LOAD_SYMBOL(d3d9, D3DPERF_EndEvent);
LOAD_SYMBOL(d3d9, D3DPERF_SetMarker); LOAD_SYMBOL(d3d9, D3DPERF_SetMarker);
LOAD_SYMBOL(d3d9, D3DPERF_GetStatus); LOAD_SYMBOL(d3d9, D3DPERF_GetStatus);
return true return ResolveD3DCompiler()
&& LOAD_SYMBOL(d3d9, Direct3DCreate9); && LOAD_SYMBOL(d3d9, Direct3DCreate9);
}(); }();
return loaded; return loaded;
@ -72,7 +198,7 @@ bool ResolveD3D9() {
bool ResolveD3D11() { bool ResolveD3D11() {
static const auto loaded = [] { static const auto loaded = [] {
const auto d3d11 = LoadLibrary(L"d3d11.dll"); const auto d3d11 = LoadLibrary(L"d3d11.dll");
return true return ResolveD3DCompiler()
&& LOAD_SYMBOL(d3d11, D3D11CreateDevice); && LOAD_SYMBOL(d3d11, D3D11CreateDevice);
}(); }();
return loaded; return loaded;
@ -91,6 +217,10 @@ bool ResolveDXGI() {
} // namespace } // namespace
} // namespace DirectX } // namespace DirectX
bool DirectXResolveCompiler() {
return DirectX::ResolveD3DCompiler();
}
namespace D = DirectX; namespace D = DirectX;
extern "C" { extern "C" {