chore: cherry-pick e8cb0e7aa32 from angle (#31235)

patches/angle/.patches

@@ -0,0 +1 @@
+fix_integer_overflow_in_blocklayoutencoder.patch

patches/angle/fix_integer_overflow_in_blocklayoutencoder.patch

@@ -0,0 +1,125 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Alexis Hetu <sugoi@google.com>
+Date: Wed, 15 Sep 2021 13:40:28 -0400
+Subject: Fix integer overflow in BlockLayoutEncoder
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+BlockLayoutEncoder::mCurrentOffset's computation had the
+possibility of causing integer overflows in multiple places,
+so this CL adds CheckedNumeric variables in a number of
+these occurrences in order to prevent integer overflows and
+causing issues.
+
+The issue in this case was an integer overflow causing the
+code in ValidateTypeSizeLimitations.cpp to use an invalid
+result from "layoutEncoder.getCurrentOffset()", which ended
+up compiling a shader which would later cause an OOM error.
+
+Bug: chromium:1248665
+Change-Id: I688d669f21c6dc2957e43bdf91f8f8f08180a6f7
+Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3163356
+Reviewed-by: Jamie Madill <jmadill@chromium.org>
+Reviewed-by: Kenneth Russell <kbr@chromium.org>
+Reviewed-by: Geoff Lang <geofflang@chromium.org>
+Commit-Queue: Alexis Hétu <sugoi@chromium.org>
+(cherry picked from commit 158ef351fc8b827c201e056a8ddba50fd4235671)
+Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3194392
+
+diff --git a/src/compiler/translator/blocklayout.cpp b/src/compiler/translator/blocklayout.cpp
+index 0539923bc75f5b88228dcb387c8aba4c701edc1b..1e6b143a1e1ee9a127b71685febd36416a8840f6 100644
+--- a/src/compiler/translator/blocklayout.cpp
++++ b/src/compiler/translator/blocklayout.cpp
+@@ -199,6 +199,13 @@ BlockMemberInfo BlockLayoutEncoder::encodeType(GLenum type,
+     return memberInfo;
+ }
+ 
++size_t BlockLayoutEncoder::getCurrentOffset() const
++{
++    angle::base::CheckedNumeric<size_t> checkedOffset(mCurrentOffset);
++    checkedOffset *= kBytesPerComponent;
++    return checkedOffset.ValueOrDefault(std::numeric_limits<size_t>::max());
++}
++
+ size_t BlockLayoutEncoder::getShaderVariableSize(const ShaderVariable &structVar, bool isRowMajor)
+ {
+     size_t currentOffset = mCurrentOffset;
+@@ -226,7 +233,13 @@ size_t BlockLayoutEncoder::GetBlockRegisterElement(const BlockMemberInfo &info)
+ 
+ void BlockLayoutEncoder::align(size_t baseAlignment)
+ {
+-    mCurrentOffset = rx::roundUp<size_t>(mCurrentOffset, baseAlignment);
++    angle::base::CheckedNumeric<size_t> checkedOffset(mCurrentOffset);
++    checkedOffset += baseAlignment;
++    checkedOffset -= 1;
++    angle::base::CheckedNumeric<size_t> checkedAlignmentOffset = checkedOffset;
++    checkedAlignmentOffset %= baseAlignment;
++    checkedOffset -= checkedAlignmentOffset.ValueOrDefault(std::numeric_limits<size_t>::max());
++    mCurrentOffset = checkedOffset.ValueOrDefault(std::numeric_limits<size_t>::max());
+ }
+ 
+ // StubBlockEncoder implementation.
+@@ -289,7 +302,7 @@ void Std140BlockEncoder::getBlockLayoutInfo(GLenum type,
+         baseAlignment              = ComponentAlignment(numComponents);
+     }
+ 
+-    mCurrentOffset = rx::roundUp(mCurrentOffset, baseAlignment);
++    align(baseAlignment);
+ 
+     *matrixStrideOut = matrixStride;
+     *arrayStrideOut  = arrayStride;
+@@ -303,16 +316,23 @@ void Std140BlockEncoder::advanceOffset(GLenum type,
+ {
+     if (!arraySizes.empty())
+     {
+-        mCurrentOffset += arrayStride * gl::ArraySizeProduct(arraySizes);
++        angle::base::CheckedNumeric<size_t> checkedOffset(arrayStride);
++        checkedOffset *= gl::ArraySizeProduct(arraySizes);
++        checkedOffset += mCurrentOffset;
++        mCurrentOffset = checkedOffset.ValueOrDefault(std::numeric_limits<size_t>::max());
+     }
+     else if (gl::IsMatrixType(type))
+     {
+-        const int numRegisters = gl::MatrixRegisterCount(type, isRowMajorMatrix);
+-        mCurrentOffset += matrixStride * numRegisters;
++        angle::base::CheckedNumeric<size_t> checkedOffset(matrixStride);
++        checkedOffset *= gl::MatrixRegisterCount(type, isRowMajorMatrix);
++        checkedOffset += mCurrentOffset;
++        mCurrentOffset = checkedOffset.ValueOrDefault(std::numeric_limits<size_t>::max());
+     }
+     else
+     {
+-        mCurrentOffset += gl::VariableComponentCount(type);
++        angle::base::CheckedNumeric<size_t> checkedOffset(mCurrentOffset);
++        checkedOffset += gl::VariableComponentCount(type);
++        mCurrentOffset = checkedOffset.ValueOrDefault(std::numeric_limits<size_t>::max());
+     }
+ }
+ 
+diff --git a/src/compiler/translator/blocklayout.h b/src/compiler/translator/blocklayout.h
+index 726d76fa178f77a978ff2c82ec20fb8f1ad03f0b..ff90a2487830b365697ce41d660a689857b75319 100644
+--- a/src/compiler/translator/blocklayout.h
++++ b/src/compiler/translator/blocklayout.h
+@@ -80,7 +80,7 @@ class BlockLayoutEncoder
+                                const std::vector<unsigned int> &arraySizes,
+                                bool isRowMajorMatrix);
+ 
+-    size_t getCurrentOffset() const { return mCurrentOffset * kBytesPerComponent; }
++    size_t getCurrentOffset() const;
+     size_t getShaderVariableSize(const ShaderVariable &structVar, bool isRowMajor);
+ 
+     // Called when entering/exiting a structure variable.
+diff --git a/src/tests/gl_tests/WebGLCompatibilityTest.cpp b/src/tests/gl_tests/WebGLCompatibilityTest.cpp
+index f57e3c6e012788666186b532fad6fc2d07d9d4b7..35cadfd7312ab1cd77c7d153c6a25b5cd47d9fe8 100644
+--- a/src/tests/gl_tests/WebGLCompatibilityTest.cpp
++++ b/src/tests/gl_tests/WebGLCompatibilityTest.cpp
+@@ -5047,7 +5047,7 @@ void main()
+ 
+     constexpr char kVSArrayMuchTooLarge[] =
+         R"(varying vec4 color;
+-const int array_size = 795418649;
++const int array_size = 556007917;
+ void main()
+ {
+     mat2 array[array_size];

patches/config.json

@@ -13,5 +13,7 @@
 
   "src/electron/patches/Mantle": "src/third_party/squirrel.mac/vendor/Mantle",
 
-  "src/electron/patches/ReactiveObjC": "src/third_party/squirrel.mac/vendor/ReactiveObjC"
+  "src/electron/patches/ReactiveObjC": "src/third_party/squirrel.mac/vendor/ReactiveObjC",
+
+  "src/electron/patches/angle": "src/third_party/angle"
 }