Upgrade Embree to the latest official release.

Since Embree v3.13.0 supports AARCH64, switch back to the
official repo instead of using Embree-aarch64.

`thirdparty/embree/patches/godot-changes.patch` should now contain
an accurate diff of the changes done to the library.

3 files changed, 11 insertions, 27 deletions

diff --git a/modules/raycast/SCsub b/modules/raycast/SCsub
index 57120bff26..6e7b3e7b8d 100644
--- a/modules/raycast/SCsub
+++ b/modules/raycast/SCsub
@@ -10,7 +10,7 @@ env_raycast = env_modules.Clone()
 thirdparty_obj = []
 
 if env["builtin_embree"]:
-    thirdparty_dir = "#thirdparty/embree-aarch64/"
+    thirdparty_dir = "#thirdparty/embree/"
 
     embree_src = [
         "common/sys/sysinfo.cpp",
@@ -28,16 +28,6 @@ if env["builtin_embree"]:
         "common/lexers/stringstream.cpp",
         "common/lexers/tokenstream.cpp",
         "common/tasking/taskschedulerinternal.cpp",
-        "common/algorithms/parallel_for.cpp",
-        "common/algorithms/parallel_reduce.cpp",
-        "common/algorithms/parallel_prefix_sum.cpp",
-        "common/algorithms/parallel_for_for.cpp",
-        "common/algorithms/parallel_for_for_prefix_sum.cpp",
-        "common/algorithms/parallel_partition.cpp",
-        "common/algorithms/parallel_sort.cpp",
-        "common/algorithms/parallel_set.cpp",
-        "common/algorithms/parallel_map.cpp",
-        "common/algorithms/parallel_filter.cpp",
         "kernels/common/device.cpp",
         "kernels/common/stat.cpp",
         "kernels/common/acceln.cpp",
@@ -82,13 +72,17 @@ if env["builtin_embree"]:
     if env["platform"] == "windows":
         if env.msvc:
             env.Append(LINKFLAGS=["psapi.lib"])
-            env_raycast.Append(CPPDEFINES=["__SSE2__", "__SSE__"])
         else:
             env.Append(LIBS=["psapi"])
 
     env_thirdparty = env_raycast.Clone()
     env_thirdparty.disable_warnings()
     env_thirdparty.add_source_files(thirdparty_obj, thirdparty_sources)
+
+    if not env["arch"] in ["x86", "x86_64"] or env.msvc:
+        # Embree needs those, it will automatically use SSE2NEON in ARM
+        env_thirdparty.Append(CPPDEFINES=["__SSE2__", "__SSE__"])
+
     env.modules_sources += thirdparty_obj
 
 
diff --git a/modules/raycast/config.py b/modules/raycast/config.py
index 3da9ace9d8..5de36c5322 100644
--- a/modules/raycast/config.py
+++ b/modules/raycast/config.py
@@ -1,6 +1,5 @@
 def can_build(env, platform):
-    # Depends on Embree library, which supports only x86_64 (originally)
-    # and aarch64 (thanks to the embree-aarch64 fork).
+    # Depends on Embree library, which only supports x86_64 and aarch64.
 
     if platform == "android":
         return env["android_arch"] in ["arm64v8", "x86_64"]
diff --git a/modules/raycast/godot_update_embree.py b/modules/raycast/godot_update_embree.py
index db4fa95c21..31a25a318f 100644
--- a/modules/raycast/godot_update_embree.py
+++ b/modules/raycast/godot_update_embree.py
@@ -11,6 +11,7 @@ include_dirs = [
     "common/algorithms",
     "common/lexers",
     "common/simd",
+    "common/simd/arm",
     "include/embree3",
     "kernels/subdiv",
     "kernels/geometry",
@@ -32,16 +33,6 @@ cpp_files = [
     "common/lexers/stringstream.cpp",
     "common/lexers/tokenstream.cpp",
     "common/tasking/taskschedulerinternal.cpp",
-    "common/algorithms/parallel_for.cpp",
-    "common/algorithms/parallel_reduce.cpp",
-    "common/algorithms/parallel_prefix_sum.cpp",
-    "common/algorithms/parallel_for_for.cpp",
-    "common/algorithms/parallel_for_for_prefix_sum.cpp",
-    "common/algorithms/parallel_partition.cpp",
-    "common/algorithms/parallel_sort.cpp",
-    "common/algorithms/parallel_set.cpp",
-    "common/algorithms/parallel_map.cpp",
-    "common/algorithms/parallel_filter.cpp",
     "kernels/common/device.cpp",
     "kernels/common/stat.cpp",
     "kernels/common/acceln.cpp",
@@ -74,11 +65,11 @@ cpp_files = [
 
 os.chdir("../../thirdparty")
 
-dir_name = "embree-aarch64"
+dir_name = "embree"
 if os.path.exists(dir_name):
     shutil.rmtree(dir_name)
 
-subprocess.run(["git", "clone", "https://github.com/lighttransport/embree-aarch64.git", "embree-tmp"])
+subprocess.run(["git", "clone", "https://github.com/embree/embree.git", "embree-tmp"])
 os.chdir("embree-tmp")
 
 commit_hash = str(subprocess.check_output(["git", "rev-parse", "HEAD"], universal_newlines=True)).strip()
@@ -197,7 +188,7 @@ with open("CMakeLists.txt", "r") as cmake_file:
 with open(os.path.join(dest_dir, "include/embree3/rtcore_config.h"), "w") as config_file:
     config_file.write(
         f"""
-// Copyright 2009-2020 Intel Corporation
+// Copyright 2009-2021 Intel Corporation
 // SPDX-License-Identifier: Apache-2.0
 
 #pragma once