context_mtl_unittests.mm

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// Copyright 2013 The Flutter 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 "flutter/testing/testing.h"
#include "impeller/core/device_buffer_descriptor.h"
#include "impeller/core/formats.h"
#include "impeller/core/texture_descriptor.h"
#include "impeller/playground/playground_test.h"
#include "impeller/renderer/backend/metal/allocator_mtl.h"
#include "impeller/renderer/backend/metal/context_mtl.h"
#include "impeller/renderer/backend/metal/formats_mtl.h"
#include "impeller/renderer/backend/metal/texture_mtl.h"
#include "impeller/renderer/capabilities.h"
 
#include <QuartzCore/CAMetalLayer.h>
#include <memory>
#include <thread>
 
#include "gtest/gtest.h"
 
namespace impeller {
namespace testing {
 
using ContextMTLTest = PlaygroundTest;
INSTANTIATE_METAL_PLAYGROUND_SUITE(ContextMTLTest);
 
TEST_P(ContextMTLTest, FlushTask) {
  auto& context_mtl = ContextMTL::Cast(*GetContext());
 
  int executed = 0;
  int failed = 0;
  context_mtl.StoreTaskForGPU([&]() { executed++; }, [&]() { failed++; });
 
  context_mtl.FlushTasksAwaitingGPU();
 
  EXPECT_EQ(executed, 1);
  EXPECT_EQ(failed, 0);
}
 
TEST_P(ContextMTLTest, FlushTaskWithGPULoss) {
  auto& context_mtl = ContextMTL::Cast(*GetContext());
 
  int executed = 0;
  int failed = 0;
  context_mtl.StoreTaskForGPU([&]() { executed++; }, [&]() { failed++; });
 
  // If tasks are flushed while the GPU is disabled, then
  // they should not be executed.
  SetGPUDisabled(/*disabled=*/true);
  context_mtl.FlushTasksAwaitingGPU();
 
  EXPECT_EQ(executed, 0);
  EXPECT_EQ(failed, 0);
 
  // Toggling availibility should flush tasks.
  SetGPUDisabled(/*disabled=*/false);
 
  EXPECT_EQ(executed, 1);
  EXPECT_EQ(failed, 0);
}
 
}  // namespace testing
}  // namespace impeller