// Copyright 2019 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "components/metal_util/test_shader.h" #include #import #include "base/bind.h" #include "base/feature_list.h" #include "base/mac/scoped_dispatch_object.h" #include "base/mac/scoped_nsobject.h" #include "base/memory/ref_counted.h" #include "base/rand_util.h" #include "base/strings/stringprintf.h" #include "base/strings/sys_string_conversions.h" #include "base/synchronization/lock.h" #include "base/task/thread_pool.h" #include "components/crash/core/common/crash_key.h" #include "components/metal_util/device.h" namespace metal { namespace { base::Feature kMetalTestShaders{"MetalTestShaders", base::FEATURE_DISABLED_BY_DEFAULT}; const char* kTestShaderSource = "" "#include \n" "#include \n" "typedef struct {\n" " float4 clipSpacePosition [[position]];\n" " float4 color;\n" "} RasterizerData;\n" "\n" "vertex RasterizerData vertexShader(\n" " uint vertexID [[vertex_id]],\n" " constant vector_float2 *positions[[buffer(0)]],\n" " constant vector_float4 *colors[[buffer(1)]]) {\n" " RasterizerData out;\n" " out.clipSpacePosition = vector_float4(0.0, 0.0, 0.0, 1.0);\n" " out.clipSpacePosition.xy = positions[vertexID].xy;\n" " out.color = colors[vertexID];\n" " return out;\n" "}\n" "\n" "fragment float4 fragmentShader(RasterizerData in [[stage_in]]) {\n" " return %f * in.color;\n" "}\n" ""; } // namesspace const size_t kTestLibSize = 0x1766; namespace { uint8_t kTestLibData[] = { 0x4d, 0x54, 0x4c, 0x42, 0x01, 0x80, 0x02, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x66, 0x17, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x58, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x66, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x76, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x86, 0x01, 0x00, 0x00, 0x00, 0x00, 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0xb5, 0x27, 0x5d, 0xca, 0xb5, 0x3b, 0xbe, 0xea, 0xb5, 0x6e, 0x1f, 0x8b, 0xb6, 0xa2, 0x88, 0xab, 0xb6, 0xb5, 0xe9, 0xcb, 0xb6, 0xe8, 0x4a, 0xee, 0xb6, 0xfc, 0xab, 0x8e, 0xb7, 0x2f, 0x0d, 0xaf, 0xb7, 0x63, 0x6e, 0xcf, 0xb7, 0x76, 0xcf, 0xef, 0xb7, 0x65, 0x1c, 0x8a, 0xb8, 0xef, 0x4c, 0x9a, 0xb8, 0x78, 0x7d, 0xaa, 0xb8, 0x22, 0xae, 0xba, 0xb8, 0xac, 0xde, 0xca, 0xb8, 0x36, 0x0f, 0xdb, 0xb8, 0xbf, 0x3f, 0xeb, 0xb8, 0x69, 0x78, 0xfb, 0xb8, 0xf3, 0xa8, 0x8b, 0xb9, 0x7c, 0xd9, 0x9b, 0xb9, 0x26, 0x0a, 0xae, 0xb9, 0xb0, 0x3a, 0xbe, 0xb9, 0x3a, 0x6b, 0xce, 0xb9, 0xe3, 0x9b, 0xde, 0xb9, 0x6d, 0xcc, 0xee, 0xb9, 0xf7, 0xfc, 0xfe, 0xb9, 0xa1, 0x2d, 0x8f, 0xba, 0x2a, 0x5e, 0x9f, 0xba, 0xb4, 0x8e, 0xaf, 0xba, 0x3e, 0xbf, 0xbf, 0xba, 0xe7, 0xef, 0xcf, 0xba, 0x71, 0x28, 0xe2, 0xba, 0xfb, 0x58, 0xf2, 0xba, 0x2e, 0xba, 0x92, 0xbb, 0xb8, 0xea, 0xa2, 0xbb, 0x62, 0x1b, 0xb3, 0xbb, 0xec, 0x4b, 0xc3, 0xbb, 0x75, 0x7c, 0xd3, 0xbb, 0xff, 0xac, 0xe3, 0xbb, 0xa9, 0xdd, 0xf3, 0xbb, 0x32, 0x0e, 0x86, 0xbc, 0xbc, 0x3e, 0x96, 0xbc, 0x66, 0x6f, 0xa6, 0xbc, 0xf0, 0x9f, 0xb6, 0xbc, 0x79, 0xd8, 0xc6, 0xbc, 0x23, 0x09, 0xd7, 0xbc, 0xad, 0x39, 0xe7, 0xbc, 0x37, 0x6a, 0xf7, 0xbc, 0xe0, 0x9a, 0x87, 0xbd, 0x6a, 0xcb, 0x97, 0xbd, 0xf4, 0xfb, 0xa7, 0xbd, 0x7d, 0x2c, 0xba, 0xbd, 0x27, 0x5d, 0xca, 0xbd, 0xb1, 0x8d, 0xda, 0xbd, 0x3b, 0xbe, 0xea, 0xbd, 0xe4, 0xee, 0xfa, 0xbd, 0x6e, 0x1f, 0x8b, 0xbe, 0xf8, 0x4f, 0x9b, 0xbe, 0xa2, 0x88, 0xab, 0xbe, 0x2b, 0xb9, 0xbb, 0xbe, 0xb5, 0xe9, 0xcb, 0xbe, 0x3f, 0x1a, 0xde, 0xbe, 0xe8, 0x4a, 0xee, 0xbe, 0x72, 0x7b, 0xfe, 0xbe, 0xfc, 0xab, 0x8e, 0xbf, 0xa6, 0xdc, 0x9e, 0xbf, 0x2f, 0x0d, 0xaf, 0xbf, 0xb9, 0x3d, 0xbf, 0xbf, 0x63, 0x6e, 0xcf, 0xbf, 0xed, 0x9e, 0xdf, 0xbf, 0x76, 0xcf, 0xef, 0xbf, 0x65, 0x1c, 0x8a, 0xe0, 0xaa, 0x38, 0x92, 0xe0, 0xef, 0x4c, 0x9a, 0xe0, 0x33, 0x69, 0xa2, 0xe0, 0x78, 0x7d, 0xaa, 0xe0, 0xbd, 0x99, 0xb2, 0xe0, 0x22, 0xae, 0xba, 0xe0, 0x67, 0xca, 0xc2, 0xe0, 0xac, 0xde, 0xca, 0xe0, 0xf1, 0xfa, 0xd2, 0xe0, 0x36, 0x0f, 0xdb, 0xe0, 0x7a, 0x2b, 0xe3, 0xe0, 0xbf, 0x3f, 0xeb, 0xe0, 0x24, 0x5c, 0xf3, 0xe0, 0x69, 0x78, 0xfb, 0xe0, 0xae, 0x8c, 0x83, 0xe1, 0xf3, 0xa8, 0x8b, 0xe1, 0x38, 0xbd, 0x93, 0xe1, 0x7c, 0xd9, 0x9b, 0xe1, 0xe1, 0xed, 0xa3, 0xe1, 0x26, 0x0a, 0xae, 0xe1, 0x6b, 0x1e, 0xb6, 0xe1, 0xb0, 0x3a, 0xbe, 0xe1, 0xf5, 0x4e, 0xc6, 0xe1, 0x3a, 0x6b, 0xce, 0xe1, 0x7e, 0x7f, 0xd6, 0xe1, 0xe3, 0x9b, 0xde, 0xe1, 0x28, 0xb8, 0xe6, 0xe1, 0x6d, 0xcc, 0xee, 0xe1, 0xb2, 0xe8, 0xf6, 0xe1, 0xf7, 0xfc, 0xfe, 0xe1, 0x3c, 0x19, 0x87, 0xe2, 0xa1, 0x2d, 0x8f, 0xe2, 0xe5, 0x49, 0x97, 0xe2, 0x2a, 0x5e, 0x9f, 0xe2, 0x6f, 0x7a, 0xa7, 0xe2, 0xb4, 0x8e, 0xaf, 0xe2, 0xf9, 0xaa, 0xb7, 0xe2, 0x3e, 0xbf, 0xbf, 0xe2, 0xa3, 0xdb, 0xc7, 0xe2, 0xe7, 0xef, 0xcf, 0xe2, 0x2c, 0x0c, 0xda, 0xe2, 0x71, 0x28, 0xe2, 0xe2, 0xb6, 0x3c, 0xea, 0xe2, 0xfb, 0x58, 0xf2, 0xe2, 0x60, 0x6d, 0xfa, 0xe2, 0xe9, 0x9d, 0x8a, 0xe3, 0x2e, 0xba, 0x92, 0xe3, 0x73, 0xce, 0x9a, 0xe3, 0xb8, 0xea, 0xa2, 0xe3, 0xfd, 0xfe, 0xaa, 0xe3, 0x62, 0x1b, 0xb3, 0xe3, 0xa7, 0x2f, 0xbb, 0xe3, 0xec, 0x4b, 0xc3, 0xe3, 0x30, 0x68, 0xcb, 0xe3, 0x75, 0x7c, 0xd3, 0xe3, 0xba, 0x98, 0xdb, 0xe3, 0xff, 0xac, 0xe3, 0xe3, 0x64, 0xc9, 0xeb, 0xe3, 0xa9, 0xdd, 0xf3, 0xe3, 0xee, 0xf9, 0xfb, 0xe3, 0x32, 0x0e, 0x86, 0xe4, 0x77, 0x2a, 0x8e, 0xe4, 0xbc, 0x3e, 0x96, 0xe4, 0x21, 0x5b, 0x9e, 0xe4, 0x66, 0x6f, 0xa6, 0xe4, 0xab, 0x8b, 0xae, 0xe4, 0xf0, 0x9f, 0xb6, 0xe4, 0x34, 0xbc, 0xbe, 0xe4, 0x79, 0xd8, 0xc6, 0xe4, 0xbe, 0xec, 0xce, 0xe4, 0x23, 0x09, 0xd7, 0xe4, 0x68, 0x1d, 0xdf, 0xe4, 0xad, 0x39, 0xe7, 0xe4, 0xf2, 0x4d, 0xef, 0xe4, 0x37, 0x6a, 0xf7, 0xe4, 0x7b, 0x7e, 0xff, 0xe4, 0xe0, 0x9a, 0x87, 0xe5, 0x25, 0xaf, 0x8f, 0xe5, 0x6a, 0xcb, 0x97, 0xe5, 0xaf, 0xdf, 0x9f, 0xe5, 0xf4, 0xfb, 0xa7, 0xe5, 0x39, 0x18, 0xb2, 0xe5, 0x7d, 0x2c, 0xba, 0xe5, 0xe2, 0x48, 0xc2, 0xe5, 0x27, 0x5d, 0xca, 0xe5, 0x6c, 0x79, 0xd2, 0xe5, 0xb1, 0x8d, 0xda, 0xe5, 0xf6, 0xa9, 0xe2, 0xe5, 0x3b, 0xbe, 0xea, 0xe5, 0x7f, 0xda, 0xf2, 0xe5, 0xe4, 0xee, 0xfa, 0xe5, 0x29, 0x0b, 0x83, 0xe6, 0x6e, 0x1f, 0x8b, 0xe6, 0xb3, 0x3b, 0x93, 0xe6, 0xf8, 0x4f, 0x9b, 0xe6, 0x3d, 0x6c, 0xa3, 0xe6, 0xa2, 0x88, 0xab, 0xe6, 0xe6, 0x9c, 0xb3, 0xe6, 0x2b, 0xb9, 0xbb, 0xe6, 0x70, 0xcd, 0xc3, 0xe6, 0xb5, 0xe9, 0xcb, 0xe6, 0xfa, 0xfd, 0xd3, 0xe6, 0x3f, 0x1a, 0xde, 0xe6, 0xa4, 0x2e, 0xe6, 0xe6, 0xe8, 0x4a, 0xee, 0xe6, 0x2d, 0x5f, 0xf6, 0xe6, 0x72, 0x7b, 0xfe, 0xe6, 0xb7, 0x8f, 0x86, 0xe7, 0xfc, 0xab, 0x8e, 0xe7, 0x61, 0xc8, 0x96, 0xe7, 0xa6, 0xdc, 0x9e, 0xe7, 0xea, 0xf8, 0xa6, 0xe7, 0x2f, 0x0d, 0xaf, 0xe7, 0x74, 0x29, 0xb7, 0xe7, 0xb9, 0x3d, 0xbf, 0xe7, 0xfe, 0x59, 0xc7, 0xe7, 0x63, 0x6e, 0xcf, 0xe7, 0xa8, 0x8a, 0xd7, 0xe7, 0xed, 0x9e, 0xdf, 0xe7, 0x31, 0xbb, 0xe7, 0xe7, 0x76, 0xcf, 0xef, 0xe7, 0xbb, 0xeb, 0xf7, 0xe7, 0x32, 0x0e, 0x86, 0xe8, 0x65, 0x1c, 0x8a, 0xe8, 0x77, 0x2a, 0x8e, 0xe8, 0xaa, 0x38, 0x92, 0xe8, 0xbc, 0x3e, 0x96, 0xe8, 0xef, 0x4c, 0x9a, 0xe8, 0x21, 0x5b, 0x9e, 0xe8, 0x33, 0x69, 0xa2, 0xe8, 0x66, 0x6f, 0xa6, 0xe8, 0x78, 0x7d, 0xaa, 0xe8, 0xab, 0x8b, 0xae, 0xe8, 0xbd, 0x99, 0xb2, 0xe8, 0xf0, 0x9f, 0xb6, 0xe8, 0x22, 0xae, 0xba, 0xe8, }; // The sha256 hash of the bitcode is stored at this offset in the shader. const size_t kTestLibHashOffset = 0x104; // The bitcode that is hashed is stored at this offset and with this size. const size_t kTestLibBitcodeOffset = 0xd16; const size_t kTestLibBitcodeSize = 0xa50; crash_reporter::CrashKeyString<32>& GetLinkIndexCrashKey() { static crash_reporter::CrashKeyString<32> crash_key("metal-link-index"); return crash_key; } } // namespace std::vector GetAlteredLibraryData() { // Make a copy of the shader's data. std::vector data(kTestLibData, kTestLibData + kTestLibSize); // Alter the data at kLiteralOffset to defeat caching. uint64_t index = base::RandInt(0, sizeof(kValidLiteralValues) / kLiteralSize - 1); for (size_t i = 0; i < kLiteralSize; ++i) data[kLiteralOffset + i] = kValidLiteralValues[kLiteralSize * index + i]; // Compute the hash of the altered bitcode and and place it in the data. CC_SHA256(&data[kTestLibBitcodeOffset], kTestLibBitcodeSize, &data[kTestLibHashOffset]); // Shader link crashes have been observed on bots. Record what index caused // them if they appear in the wild. GetLinkIndexCrashKey().Set(base::StringPrintf("%llu", index)); return data; } namespace { base::ScopedDispatchObject GetLibraryData() { auto vector_data = GetAlteredLibraryData(); base::ScopedDispatchObject dispatch_data( dispatch_data_create(vector_data.data(), vector_data.size(), nullptr, DISPATCH_DATA_DESTRUCTOR_DEFAULT)); return dispatch_data; } // State shared between the compiler callback and the caller. class TestShaderState : public base::RefCountedThreadSafe { public: TestShaderState(TestShaderCallback callback, TestShaderComponent component, const base::TimeDelta& timeout) : callback_(std::move(callback)), component_(component), timeout_(timeout), start_time_(base::TimeTicks::Now()) {} // Called when the completion callback happens. void OnCompletionHandlerCalled(TestShaderResult result) { { base::AutoLock lock(lock_); result_ = result; completion_handler_called_time_ = base::TimeTicks::Now(); } RunCallbackIfReady(); } // Called when the call to newLibraryWithSource or // newRenderStateWithDescriptor completes. Note that this may happen before or // after OnCompletionHandlerCalled is called. void OnMethodCompleted() { { base::AutoLock lock(lock_); method_completed_time_ = base::TimeTicks::Now(); } RunCallbackIfReady(); } // Called on timeout. This is always called eventually. void OnTimeout() { { base::AutoLock lock(lock_); timed_out_ = true; } RunCallbackIfReady(); } protected: virtual ~TestShaderState() = default; void RunCallbackIfReady() { base::OnceClosure closure; { base::AutoLock lock(lock_); // Early-out if we have already run the callback. if (!callback_) return; // We're ready to run the callback if we have timed out, or if both times // have been set. if (!timed_out_ && (method_completed_time_.is_null() || completion_handler_called_time_.is_null())) return; // It would be truly bizarre to have newLibraryWithSource hang, but yet // have the completion handler have been called. Crash if we see this, // rather than trying to reason about it. if (method_completed_time_.is_null()) CHECK(completion_handler_called_time_.is_null()); // We will use a single histogram for both "how long did compile take" and // "did compile complete in 1 minute" by pushing timeouts into the maximum // bucket of UMA_HISTOGRAM_MEDIUM_TIMES. base::TimeDelta method_time = kTestShaderTimeForever; if (!method_completed_time_.is_null()) method_time = std::min(timeout_, method_completed_time_ - start_time_); base::TimeDelta compile_time = kTestShaderTimeForever; if (!completion_handler_called_time_.is_null()) compile_time = std::min(timeout_, completion_handler_called_time_ - start_time_); // Set up the callback to execute once we release the lock. closure = base::BindOnce(std::move(callback_), component_, result_, compile_time); } if (closure) { // If this is a link that has completed, then we set the crash key when // constructing the shader binary. Clear it now, because Metal didn't // crash while linking the shader. if (component_ == TestShaderComponent::kLink) GetLinkIndexCrashKey().Clear(); std::move(closure).Run(); } } base::Lock lock_; TestShaderCallback callback_; TestShaderResult result_ = TestShaderResult::kTimedOut; const TestShaderComponent component_; const base::TimeDelta timeout_; const base::TimeTicks start_time_; base::TimeTicks method_completed_time_; base::TimeTicks completion_handler_called_time_; bool timed_out_ = false; friend class base::RefCountedThreadSafe; }; void TestRenderPipelineStateNow(base::scoped_nsprotocol> device, const base::TimeDelta& timeout, TestShaderCallback callback) API_AVAILABLE(macos(10.14)) { // Load the library binary. This should not fail. base::ScopedDispatchObject library_data = GetLibraryData(); NSError* error = nil; base::scoped_nsprotocol> library( [device newLibraryWithData:library_data error:&error]); base::scoped_nsprotocol> vertex_fn( [library newFunctionWithName:@"vertexShader"]); base::scoped_nsprotocol> fragment_fn( [library newFunctionWithName:@"fragmentShader"]); if (error || !library || !vertex_fn || !fragment_fn) return; // Initialize the TestShaderState and post the timeout callback, before // calling into the Metal API. auto state = base::MakeRefCounted( std::move(callback), TestShaderComponent::kLink, timeout); base::ThreadPool::PostDelayedTask( FROM_HERE, {}, base::BindOnce(&TestShaderState::OnTimeout, state), timeout); // Request asynchronous compile of the RenderPipelineState. base::scoped_nsobject descriptor( [[MTLRenderPipelineDescriptor alloc] init]); [descriptor setLabel:@"Test Pipeline"]; [descriptor setVertexFunction:vertex_fn]; [descriptor setFragmentFunction:fragment_fn]; [descriptor colorAttachments][0].pixelFormat = MTLPixelFormatBGRA8Unorm; MTLNewRenderPipelineStateCompletionHandler completion_handler = ^(id render_pipeline_state, NSError* ns_error) { state->OnCompletionHandlerCalled(render_pipeline_state ? TestShaderResult::kSucceeded : TestShaderResult::kFailed); }; [device newRenderPipelineStateWithDescriptor:descriptor completionHandler:completion_handler]; state->OnMethodCompleted(); } void TestShaderNow(base::scoped_nsprotocol> device, const base::TimeDelta& timeout, TestShaderCallback callback) API_AVAILABLE(macos(10.14)) { // Initialize the TestShaderState and post the timeout callback, before // calling into the Metal API. auto state = base::MakeRefCounted( std::move(callback), TestShaderComponent::kCompile, timeout); base::ThreadPool::PostDelayedTask( FROM_HERE, {}, base::BindOnce(&TestShaderState::OnTimeout, state), timeout); const std::string shader_source = base::StringPrintf(kTestShaderSource, base::RandDouble()); base::scoped_nsobject source([[NSString alloc] initWithCString:shader_source.c_str() encoding:NSASCIIStringEncoding]); base::scoped_nsobject options( [[MTLCompileOptions alloc] init]); MTLNewLibraryCompletionHandler completion_handler = ^(id library, NSError* error) { state->OnCompletionHandlerCalled(library ? TestShaderResult::kSucceeded : TestShaderResult::kFailed); }; [device newLibraryWithSource:source options:options completionHandler:completion_handler]; state->OnMethodCompleted(); } } // namespace void TestShader(TestShaderCallback callback, const base::TimeDelta& delay, const base::TimeDelta& timeout) { if (!base::FeatureList::IsEnabled(kMetalTestShaders)) return; // Select a component to test at random. TestShaderComponent component = base::RandInt(0, 1) ? TestShaderComponent::kLink : TestShaderComponent::kCompile; // The metallib listed above is in MTLLanguageVersion2_1, which is available // only on 10.14 and above. if (@available(macOS 10.14, *)) { base::scoped_nsprotocol> device(CreateDefaultDevice()); if (device) { // Select the callback depending on if we're testing online or offline // compile. base::OnceClosure closure; switch (component) { case TestShaderComponent::kCompile: closure = base::BindOnce(&TestShaderNow, device, timeout, std::move(callback)); break; case TestShaderComponent::kLink: closure = base::BindOnce(&TestRenderPipelineStateNow, device, timeout, std::move(callback)); break; } if (closure) { base::ThreadPool::PostDelayedTask(FROM_HERE, {base::TaskPriority::HIGHEST}, std::move(closure), delay); return; } } } std::move(callback).Run(component, TestShaderResult::kNotAttempted, base::TimeDelta()); } } // namespace metal