Isolate commit_id.h from other code.

Instead of recompiling multiple source files, we can seal off the
files that include commit_id to prevent recompilations when the
commit changes and source files don't change.

Bug: angleproject:2551
Change-Id: I98800c5a8e04ec7d4c3e57ea0eb3b636d3b224bb
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3212895
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>

BUILD.gn

@@ -376,7 +376,6 @@ angle_static_library("angle_common") {
 
   public_deps = [
     ":angle_abseil",
-    ":angle_version",
     ":includes",
   ]
   public_configs += [ ":angle_common_config" ]
@@ -663,10 +662,12 @@ config("angle_commit_id_config") {
   visibility = [ ":angle_commit_id" ]
 }
 
-_commit_id_output_file = "$root_gen_dir/angle/angle_commit.h"
 action("angle_commit_id") {
+  _commit_id_header = "$root_gen_dir/angle/angle_commit.h"
   script = "src/commit_id.py"
-  outputs = [ _commit_id_output_file ]
+  outputs = [ _commit_id_header ]
+
+  visibility = [ ":angle_version" ]
 
   # Add git as a dependency if it is available.
   if (angle_enable_commit_id &&
@@ -692,7 +693,7 @@ action("angle_commit_id") {
 
   args = [
     "gen",
-    rebase_path(_commit_id_output_file, root_build_dir),
+    rebase_path(_commit_id_header, root_build_dir),
   ]
 
   public_configs = [ ":angle_commit_id_config" ]
@@ -701,6 +702,30 @@ action("angle_commit_id") {
 angle_source_set("angle_version") {
   sources = [ "src/common/angle_version.h" ]
   public_deps = [ ":angle_commit_id" ]
+  visibility = [
+    ":angle_version_info",
+    ":libEGL",
+    ":libGL",
+    ":libGLESv1_CM",
+    ":libGLESv2",
+    ":libGLESv2_capture_complement",
+  ]
+
+  # TODO(jmadill): Remove once headers isolated. http://anglebug.com/2551
+  if (build_with_chromium) {
+    visibility += [
+      "//content/browser:browser",
+      "//gpu/command_buffer/service:gles2_sources",
+    ]
+  }
+}
+
+angle_source_set("angle_version_info") {
+  sources = [
+    "src/common/angle_version_info.cpp",
+    "src/common/angle_version_info.h",
+  ]
+  deps = [ ":angle_version" ]
 }
 
 config("angle_backend_config") {
@@ -854,7 +879,7 @@ angle_source_set("libANGLE_base") {
   public_deps = [
     ":angle_common",
     ":angle_gpu_info_util",
-    ":angle_version",
+    ":angle_version_info",
     ":libANGLE_headers",
     ":translator",
   ]
@@ -1117,9 +1142,11 @@ template("angle_libGLESv2") {
     if (angle_enable_cl) {
       sources += libglesv2_cl_sources
     }
-
     if (is_win) {
-      sources += [ "src/libGLESv2/${invoker.output_name}_autogen.def" ]
+      sources += [
+        "src/libGLESv2/${invoker.output_name}_autogen.def",
+        "src/libGLESv2/libGLESv2.rc",
+      ]
     }
 
     output_name = "${invoker.output_name}${angle_libs_suffix}"
@@ -1132,9 +1159,10 @@ template("angle_libGLESv2") {
 
     defines = [ "LIBGLESV2_IMPLEMENTATION" ]
 
-    deps = invoker.deps + [ ":includes" ]
-
-    public_deps = [ ":angle_version" ]
+    deps = invoker.deps + [
+             ":angle_version",
+             ":includes",
+           ]
   }
 }
 
@@ -1178,11 +1206,10 @@ if (is_win && !angle_is_winuwp) {
     ]
 
     deps = [
+      ":angle_version",
       ":includes",
       ":libANGLE",
     ]
-
-    public_deps = [ ":angle_version" ]
   }
 }
 
@@ -1211,6 +1238,7 @@ angle_shared_library("libGLESv1_CM") {
   defines = []
 
   deps = [
+    ":angle_version",
     ":includes",
     ":libGLESv2",
   ]
@@ -1240,6 +1268,10 @@ angle_source_set("libEGL_egl_loader") {
 
 angle_shared_library("libEGL") {
   sources = libegl_sources
+  if (is_win) {
+    sources += [ "src/libEGL/libEGL.rc" ]
+  }
+
   output_name = "libEGL${angle_libs_suffix}"
 
   configs += [

src/common/angle_version_info.cpp

@@ -0,0 +1,31 @@
+//
+// Copyright 2021 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// angle_version_info.cpp: ANGLE version queries.
+
+#include "common/angle_version.h"
+
+namespace angle
+{
+int GetANGLERevision()
+{
+    return ANGLE_REVISION;
+}
+
+const char *GetANGLEVersionString()
+{
+    return ANGLE_VERSION_STRING;
+}
+
+const char *GetANGLECommitHash()
+{
+    return ANGLE_COMMIT_HASH;
+}
+
+int GetANGLECommitHashSize()
+{
+    return ANGLE_COMMIT_HASH_SIZE;
+}
+}  // namespace angle

src/common/angle_version_info.h

@@ -0,0 +1,19 @@
+//
+// Copyright 2021 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// angle_version_info.h: ANGLE version queries.
+
+#ifndef COMMON_VERSION_H_
+#define COMMON_VERSION_H_
+
+namespace angle
+{
+int GetANGLERevision();
+const char *GetANGLEVersionString();
+const char *GetANGLECommitHash();
+int GetANGLECommitHashSize();
+}  // namespace angle
+
+#endif  // COMMON_VERSION_H_

src/libANGLE/Context.cpp

@@ -15,7 +15,7 @@
 #include <vector>
 
 #include "common/PackedEnums.h"
-#include "common/angle_version.h"
+#include "common/angle_version_info.h"
 #include "common/matrix_utils.h"
 #include "common/platform.h"
 #include "common/system_utils.h"
@@ -3210,7 +3210,7 @@ void Context::initVersionStrings()
         versionString << "OpenGL ES ";
     }
     versionString << clientVersion.major << "." << clientVersion.minor << ".0 (ANGLE "
-                  << ANGLE_VERSION_STRING << ")";
+                  << angle::GetANGLEVersionString() << ")";
     mVersionString = MakeStaticString(versionString.str());
 
     std::ostringstream shadingLanguageVersionString;
@@ -3224,8 +3224,8 @@ void Context::initVersionStrings()
         shadingLanguageVersionString << "OpenGL GLSL ";
     }
     shadingLanguageVersionString << (clientVersion.major == 2 ? 1 : clientVersion.major) << "."
-                                 << clientVersion.minor << "0 (ANGLE " << ANGLE_VERSION_STRING
-                                 << ")";
+                                 << clientVersion.minor << "0 (ANGLE "
+                                 << angle::GetANGLEVersionString() << ")";
     mShadingLanguageString = MakeStaticString(shadingLanguageVersionString.str());
 }
 

src/libANGLE/MemoryProgramCache.cpp

@@ -16,7 +16,7 @@
 #include <GLSLANG/ShaderVars.h>
 #include <anglebase/sha1.h>
 
-#include "common/angle_version.h"
+#include "common/angle_version_info.h"
 #include "common/utilities.h"
 #include "libANGLE/BinaryStream.h"
 #include "libANGLE/Context.h"
@@ -116,7 +116,7 @@ void MemoryProgramCache::ComputeHash(const Context *context,
     }
 
     // Add some ANGLE metadata and Context properties, such as version and back-end.
-    hashStream << ANGLE_COMMIT_HASH << context->getClientMajorVersion()
+    hashStream << angle::GetANGLECommitHash() << context->getClientMajorVersion()
                << context->getClientMinorVersion() << context->getString(GL_RENDERER);
 
     // Hash pre-link program properties.

src/libANGLE/Program.cpp

@@ -12,7 +12,7 @@
 #include <algorithm>
 #include <utility>
 
-#include "common/angle_version.h"
+#include "common/angle_version_info.h"
 #include "common/bitset_utils.h"
 #include "common/debug.h"
 #include "common/platform.h"
@@ -4635,8 +4635,8 @@ angle::Result Program::serialize(const Context *context, angle::MemoryBuffer *bi
 {
     BinaryOutputStream stream;
 
-    stream.writeBytes(reinterpret_cast<const unsigned char *>(ANGLE_COMMIT_HASH),
-                      ANGLE_COMMIT_HASH_SIZE);
+    stream.writeBytes(reinterpret_cast<const unsigned char *>(angle::GetANGLECommitHash()),
+                      angle::GetANGLECommitHashSize());
 
     // nullptr context is supported when computing binary length.
     if (context)
@@ -4716,7 +4716,7 @@ angle::Result Program::serialize(const Context *context, angle::MemoryBuffer *bi
             }
             else
             {
-                // If we dont have an attached shader, which would occur if this program was
+                // If we don't have an attached shader, which would occur if this program was
                 // created via glProgramBinary, pull from our cached copy
                 const angle::ProgramSources &cachedLinkedSources =
                     context->getShareGroup()->getFrameCaptureShared()->getProgramSources(id());
@@ -4744,10 +4744,9 @@ angle::Result Program::deserialize(const Context *context,
                                    BinaryInputStream &stream,
                                    InfoLog &infoLog)
 {
-    unsigned char commitString[ANGLE_COMMIT_HASH_SIZE];
-    stream.readBytes(commitString, ANGLE_COMMIT_HASH_SIZE);
-    if (memcmp(commitString, ANGLE_COMMIT_HASH, sizeof(unsigned char) * ANGLE_COMMIT_HASH_SIZE) !=
-        0)
+    std::vector<uint8_t> commitString(angle::GetANGLECommitHashSize(), 0);
+    stream.readBytes(commitString.data(), commitString.size());
+    if (memcmp(commitString.data(), angle::GetANGLECommitHash(), commitString.size()) != 0)
     {
         infoLog << "Invalid program binary version.";
         return angle::Result::Stop;

src/libANGLE/capture/FrameCapture.cpp

@@ -16,7 +16,7 @@
 
 #include "sys/stat.h"
 
-#include "common/angle_version.h"
+#include "common/angle_version_info.h"
 #include "common/mathutil.h"
 #include "common/serializer/JsonSerializer.h"
 #include "common/string_utils.h"
@@ -6034,7 +6034,7 @@ void FrameCaptureShared::writeCppReplayIndexFiles(const gl::Context *context,
 
     JsonSerializer json;
     json.startGroup("TraceMetadata");
-    json.addScalar("CaptureRevision", ANGLE_REVISION);
+    json.addScalar("CaptureRevision", GetANGLERevision());
     json.addScalar("ContextClientMajorVersion", context->getClientMajorVersion());
     json.addScalar("ContextClientMinorVersion", context->getClientMinorVersion());
     json.addHexValue("DisplayPlatformType", displayAttribs.getAsInt(EGL_PLATFORM_ANGLE_TYPE_ANGLE));

src/libANGLE/renderer/cl/BUILD.gn

@@ -40,6 +40,7 @@ angle_source_set("angle_cl_backend") {
   sources = _cl_backend_sources
 
   public_deps = [
+    "$angle_root:angle_version_info",
     "$angle_root:libANGLE_headers",
     "$angle_root/third_party/OpenCL-ICD-Loader:opencl_icd_loader",
   ]

src/libANGLE/renderer/cl/CLPlatformCL.cpp

@@ -7,15 +7,13 @@
 
 #include "libANGLE/renderer/cl/CLPlatformCL.h"
 
-#include "libANGLE/renderer/cl/CLContextCL.h"
-#include "libANGLE/renderer/cl/CLDeviceCL.h"
-#include "libANGLE/renderer/cl/cl_util.h"
-
+#include "common/angle_version_info.h"
 #include "libANGLE/CLContext.h"
 #include "libANGLE/CLDevice.h"
 #include "libANGLE/CLPlatform.h"
-
-#include "common/angle_version.h"
+#include "libANGLE/renderer/cl/CLContextCL.h"
+#include "libANGLE/renderer/cl/CLDeviceCL.h"
+#include "libANGLE/renderer/cl/cl_util.h"
 
 extern "C" {
 #include "icd.h"
@@ -173,7 +171,7 @@ CLPlatformImpl::Info CLPlatformCL::createInfo() const
     }
 
     // Customize version string and name
-    info.versionStr += " (ANGLE " ANGLE_VERSION_STRING ")";
+    info.versionStr += std::string(" (ANGLE ") + angle::GetANGLEVersionString() + ")";
     info.name.insert(0u, "ANGLE pass-through -> ");
 
     if (version >= CL_MAKE_VERSION(2, 1, 0) &&

src/libANGLE/renderer/vulkan/BUILD.gn

@@ -264,6 +264,10 @@ angle_source_set("angle_vulkan_backend") {
     "$angle_spirv_headers_dir:spv_headers",
   ]
 
+  if (angle_enable_cl || is_android) {
+    deps += [ "$angle_root:angle_version_info" ]
+  }
+
   public_deps = [
     "$angle_root:angle_glslang_wrapper",
     "$angle_root:libANGLE_headers",

src/libANGLE/renderer/vulkan/CLPlatformVk.cpp

@@ -12,7 +12,7 @@
 #include "libANGLE/CLPlatform.h"
 
 #include "anglebase/no_destructor.h"
-#include "common/angle_version.h"
+#include "common/angle_version_info.h"
 
 namespace rx
 {
@@ -98,7 +98,8 @@ const std::string &CLPlatformVk::GetVersionString()
 {
     static const angle::base::NoDestructor<const std::string> sVersion(
         "OpenCL " + std::to_string(CL_VERSION_MAJOR(GetVersion())) + "." +
-        std::to_string(CL_VERSION_MINOR(GetVersion())) + " ANGLE " ANGLE_VERSION_STRING);
+        std::to_string(CL_VERSION_MINOR(GetVersion())) + " ANGLE " +
+        angle::GetANGLEVersionString());
     return *sVersion;
 }
 

src/libANGLE/renderer/vulkan/android/DisplayVkAndroid.cpp

@@ -13,7 +13,7 @@
 #include <android/native_window.h>
 #include <vulkan/vulkan.h>
 
-#include "common/angle_version.h"
+#include "common/angle_version_info.h"
 #include "libANGLE/renderer/driver_utils.h"
 #include "libANGLE/renderer/vulkan/RendererVk.h"
 #include "libANGLE/renderer/vulkan/android/HardwareBufferImageSiblingVkAndroid.h"
@@ -30,7 +30,7 @@ egl::Error DisplayVkAndroid::initialize(egl::Display *display)
     ANGLE_TRY(DisplayVk::initialize(display));
 
     std::stringstream strstr;
-    strstr << "Version (" << ANGLE_VERSION_STRING << "), ";
+    strstr << "Version (" << angle::GetANGLEVersionString() << "), ";
     strstr << "Renderer (" << mRenderer->getRendererDescription() << ")";
     __android_log_print(ANDROID_LOG_INFO, "ANGLE", "%s", strstr.str().c_str());
 

src/libGL/entry_points_wgl.cpp

@@ -7,7 +7,6 @@
 
 #include "entry_points_wgl.h"
 
-#include "common/angle_version.h"
 #include "common/debug.h"
 #include "common/event_tracer.h"
 #include "common/utilities.h"

src/libGLESv2.gni

@@ -626,10 +626,6 @@ libglesv2_cl_sources = [
   "src/libGLESv2/proc_table_cl_autogen.cpp",
 ]
 
-if (is_win) {
-  libglesv2_sources += [ "src/libGLESv2/libGLESv2.rc" ]
-}
-
 libglesv1_cm_sources = [
   "src/libGLESv1_CM/libGLESv1_CM.cpp",
   "src/libGLESv1_CM/resource.h",
@@ -646,7 +642,3 @@ libegl_sources = [
   "src/libGLESv2/entry_points_egl_autogen.h",
   "src/libGLESv2/entry_points_egl_ext_autogen.h",
 ]
-
-if (is_win) {
-  libegl_sources += [ "src/libEGL/libEGL.rc" ]
-}

src/libGLESv2/egl_stubs.cpp

@@ -8,7 +8,7 @@
 
 #include "libGLESv2/egl_stubs_autogen.h"
 
-#include "common/angle_version.h"
+#include "common/angle_version_info.h"
 #include "libANGLE/Context.h"
 #include "libANGLE/Display.h"
 #include "libANGLE/EGLSync.h"
@@ -534,8 +534,12 @@ const char *QueryString(Thread *thread, Display *display, EGLint name)
             result = display->getVendorString().c_str();
             break;
         case EGL_VERSION:
-            result = "1.5 (ANGLE " ANGLE_VERSION_STRING ")";
+        {
+            static const char *sVersionString =
+                MakeStaticString(std::string("1.5 (ANGLE ") + angle::GetANGLEVersionString() + ")");
+            result = sVersionString;
             break;
+        }
         default:
             UNREACHABLE();
             break;