Merge remote-tracking branch 'tint/main' into HEAD

Integrates Tint repo into Dawn

KIs:
- Building docs for Tint is turned off, because it fails due to lack
  of annotations in Dawn source files.
- Dawn CQ needs to be updated to run Tint specific tests
- Significant post-merge cleanup needed

R=bclayton,cwallez
BUG=dawn:1339

Change-Id: I6c9714a0030934edd6c51f3cac4684dcd59d1ea3

third_party/CMakeLists.txt

@@ -1,4 +1,4 @@
-# Copyright 2020 The Dawn Authors
+# Copyright 2022 The Dawn & Tint Authors
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -23,16 +23,36 @@ if (NOT TARGET SPIRV-Headers)
     add_subdirectory(${DAWN_SPIRV_HEADERS_DIR} "${CMAKE_CURRENT_BINARY_DIR}/spirv-headers")
 endif()
 
+if(${TINT_BUILD_GLSL_WRITER})
+  if(${TINT_BUILD_SAMPLES})
+    add_subdirectory("${DAWN_THIRD_PARTY_DIR}/vulkan-deps/glslang/src" "${CMAKE_CURRENT_BINARY_DIR}/glslang" EXCLUDE_FROM_ALL)
+  endif()
+endif()
+
+if(${TINT_BUILD_SPV_READER} OR ${TINT_BUILD_SPV_WRITER})
+  if (NOT IS_DIRECTORY "${SPIRV-Headers_SOURCE_DIR}")
+    set(SPIRV-Headers_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/spirv-headers CACHE STRING "Source directory for SPIR-V headers")
+  endif()
+endif()
+
 if (NOT TARGET SPIRV-Tools)
     set(SPIRV_SKIP_TESTS ON CACHE BOOL "" FORCE)
     set(SPIRV_SKIP_EXECUTABLES ON CACHE BOOL "" FORCE)
     set(SKIP_SPIRV_TOOLS_INSTALL ON CACHE BOOL "" FORCE)
 
+    if(${TINT_BUILD_SPV_READER} OR ${TINT_BUILD_SPV_WRITER})
+      set(SPIRV_SKIP_TESTS ON CACHE BOOL "Controls whether SPIR-V tests are run" FORCE)
+      set(SPIRV_WERROR OFF CACHE BOOL OFF FORCE)
+      if (${TINT_BUILD_SPIRV_TOOLS_FUZZER})
+        set(SPIRV_BUILD_FUZZER ON CACHE BOOL "Controls whether spirv-fuzz is built" FORCE)
+      endif()
+    endif()
+
     message(STATUS "Dawn: using SPIRV-Tools at ${DAWN_SPIRV_TOOLS_DIR}")
-    add_subdirectory(${DAWN_SPIRV_TOOLS_DIR} "${CMAKE_CURRENT_BINARY_DIR}/spirv-tools")
+    add_subdirectory(${DAWN_SPIRV_TOOLS_DIR} "${CMAKE_CURRENT_BINARY_DIR}/spirv-tools" EXCLUDE_FROM_ALL)
 endif()
 
-if (NOT TARGET glfw AND DAWN_SUPPORTS_GLFW_FOR_WINDOWING)
+if (NOT TARGET glfw)
     set(GLFW_BUILD_DOCS OFF CACHE BOOL "" FORCE)
     set(GLFW_BUILD_TESTS OFF CACHE BOOL "" FORCE)
     set(GLFW_BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)
@@ -41,20 +61,6 @@ if (NOT TARGET glfw AND DAWN_SUPPORTS_GLFW_FOR_WINDOWING)
     add_subdirectory(${DAWN_GLFW_DIR} "${CMAKE_CURRENT_BINARY_DIR}/glfw")
 endif()
 
-if (NOT TARGET libtint)
-    message(STATUS "Dawn: using Tint at ${DAWN_TINT_DIR}")
-    set(TINT_BUILD_GLSL_WRITER ON)
-    # Don't build the samples because they require glslang and Dawn does not
-    # provide this third_party dependency.
-    set(TINT_BUILD_SAMPLES OFF)
-    # TODO(crbug.com/tint/455): Tint does not currently build with CMake when
-    # BUILD_SHARED_LIBS=1, so always build it as static for now.
-    set(BUILD_SHARED_LIBS_SAVED ${BUILD_SHARED_LIBS})
-    set(BUILD_SHARED_LIBS 0)
-    add_subdirectory(${DAWN_TINT_DIR} "${CMAKE_CURRENT_BINARY_DIR}/tint")
-    set(BUILD_SHARED_LIBS ${BUILD_SHARED_LIBS_SAVED})
-endif()
-
 if (NOT TARGET libabsl)
     message(STATUS "Dawn: using Abseil at ${DAWN_ABSEIL_DIR}")
     add_subdirectory(${DAWN_ABSEIL_DIR} "${CMAKE_CURRENT_BINARY_DIR}/abseil")
@@ -69,3 +75,32 @@ endif()
 add_library(dawn_khronos_platform INTERFACE)
 target_sources(dawn_khronos_platform INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}/khronos/KHR/khrplatform.h")
 target_include_directories(dawn_khronos_platform INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}/khronos")
+
+# Header-only library for Vulkan headers
+add_library(dawn_vulkan_headers INTERFACE)
+target_sources(dawn_vulkan_headers INTERFACE
+    "${CMAKE_CURRENT_SOURCE_DIR}/khronos/vulkan/vk_icd.h"
+    "${CMAKE_CURRENT_SOURCE_DIR}/khronos/vulkan/vk_layer.h"
+    "${CMAKE_CURRENT_SOURCE_DIR}/khronos/vulkan/vk_platform.h"
+    "${CMAKE_CURRENT_SOURCE_DIR}/khronos/vulkan/vk_sdk_platform.h"
+    "${CMAKE_CURRENT_SOURCE_DIR}/khronos/vulkan/vulkan.h"
+    "${CMAKE_CURRENT_SOURCE_DIR}/khronos/vulkan/vulkan_core.h"
+)
+target_include_directories(dawn_vulkan_headers INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}/khronos")
+
+if (${TINT_BUILD_BENCHMARKS})
+  set(BENCHMARK_ENABLE_TESTING FALSE CACHE BOOL FALSE FORCE)
+  add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/benchmark EXCLUDE_FROM_ALL)
+endif()
+
+if (${TINT_BUILD_TESTS} AND NOT TARGET gmock)
+  set(gtest_force_shared_crt ON CACHE BOOL "Controls whether a shared run-time library should be used even when Google Test is built as static library" FORCE)
+  add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/googletest EXCLUDE_FROM_ALL)
+endif()
+
+if ((${TINT_BUILD_SPIRV_TOOLS_FUZZER} OR ${TINT_BUILD_AST_FUZZER}) AND
+    (NOT TARGET protobuf::libprotobuf OR NOT TARGET protobuf::protoc))
+  set(protobuf_BUILD_TESTS OFF CACHE BOOL "Controls whether protobuf tests are built" FORCE)
+  set(protobuf_MSVC_STATIC_RUNTIME OFF CACHE BOOL "Controls whether a protobuf static runtime is built" FORCE)
+  add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/protobuf/cmake)
+endif()