clip_contents_unittests.cc

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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 <memory>
#include <optional>
 
#include "gtest/gtest.h"
 
#include "impeller/entity/contents/clip_contents.h"
#include "impeller/entity/contents/content_context.h"
#include "impeller/entity/contents/contents.h"
#include "impeller/entity/contents/test/recording_render_pass.h"
#include "impeller/entity/entity.h"
#include "impeller/entity/entity_playground.h"
#include "impeller/renderer/render_target.h"
 
namespace impeller {
namespace testing {
 
using EntityTest = EntityPlayground;
 
TEST_P(EntityTest, ClipContentsOptimizesFullScreenIntersectClips) {
  // Set up mock environment.
 
  auto content_context = GetContentContext();
  auto buffer = content_context->GetContext()->CreateCommandBuffer();
  auto render_target =
      GetContentContext()->GetRenderTargetCache()->CreateOffscreenMSAA(
          *content_context->GetContext(), {100, 100},
          /*mip_count=*/1);
  auto render_pass = buffer->CreateRenderPass(render_target);
  auto recording_pass = std::make_shared<RecordingRenderPass>(
      render_pass, GetContext(), render_target);
 
  // Set up clip contents.
 
  auto contents = std::make_shared<ClipContents>();
  contents->SetClipOperation(Entity::ClipOperation::kIntersect);
  auto geom = Geometry::MakeCover();
  contents->SetGeometry(geom.get());
 
  Entity entity;
  entity.SetContents(std::move(contents));
 
  // Render the clip contents.
 
  ASSERT_TRUE(recording_pass->GetCommands().empty());
  ASSERT_TRUE(entity.Render(*content_context, *recording_pass));
  ASSERT_FALSE(recording_pass->GetCommands().empty());
}
 
}  // namespace testing
}  // namespace impeller