1 files changed, 125 insertions, 0 deletions
diff --git a/gfx/tests/gtest/TestTextureCompatibility.cpp b/gfx/tests/gtest/TestTextureCompatibility.cpp
new file mode 100644
index 0000000000..2e5236614d
--- /dev/null
+++ b/gfx/tests/gtest/TestTextureCompatibility.cpp
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "gfxConfig.h"
+#include "gfxPlatform.h"
+#include "gtest/gtest.h"
+#include "MockWidget.h"
+#include "mozilla/layers/BasicCompositor.h"
+#include "mozilla/layers/Compositor.h"
+#include "mozilla/layers/LayersTypes.h"
+#include "mozilla/layers/TextureClient.h"
+#include "mozilla/layers/TextureHost.h"
+#include "mozilla/RefPtr.h"
+#include "TestLayers.h"
+#include "TextureHelper.h"
+
+using mozilla::gfx::Feature;
+using mozilla::gfx::gfxConfig;
+using mozilla::layers::BasicCompositor;
+using mozilla::layers::Compositor;
+using mozilla::layers::CompositorOptions;
+using mozilla::layers::ISurfaceAllocator;
+using mozilla::layers::LayersBackend;
+using mozilla::layers::TestSurfaceAllocator;
+using mozilla::layers::TextureClient;
+using mozilla::layers::TextureHost;
+using mozilla::widget::CompositorWidget;
+using mozilla::widget::InProcessCompositorWidget;
+
+/**
+ * This function will create the possible TextureClient and TextureHost pairs
+ * according to the given backend.
+ */
+static void CreateTextureWithBackend(
+    LayersBackend& aLayersBackend, ISurfaceAllocator* aDeallocator,
+    nsTArray<RefPtr<TextureClient>>& aTextureClients,
+    nsTArray<RefPtr<TextureHost>>& aTextureHosts) {
+  aTextureClients.AppendElement(CreateTextureClientWithBackend(aLayersBackend));
+
+  aTextureClients.AppendElement(
+      CreateYCbCrTextureClientWithBackend(aLayersBackend));
+
+  for (uint32_t i = 0; i < aTextureClients.Length(); i++) {
+    aTextureHosts.AppendElement(CreateTextureHostWithBackend(
+        aTextureClients[i], aDeallocator, aLayersBackend));
+  }
+}
+
+/**
+ * This will return the default list of backends that units test should run
+ * against.
+ */
+static void GetPlatformBackends(nsTArray<LayersBackend>& aBackends) {
+  gfxPlatform* platform = gfxPlatform::GetPlatform();
+  MOZ_ASSERT(platform);
+
+  platform->GetCompositorBackends(gfxConfig::IsEnabled(Feature::HW_COMPOSITING),
+                                  aBackends);
+
+  if (aBackends.IsEmpty()) {
+    aBackends.AppendElement(LayersBackend::LAYERS_BASIC);
+  }
+}
+
+/**
+ * This function will return a BasicCompositor to caller.
+ */
+static already_AddRefed<Compositor> CreateBasicCompositor() {
+  RefPtr<Compositor> compositor;
+  // Init the platform.
+  if (gfxPlatform::GetPlatform()) {
+    RefPtr<MockWidget> widget = new MockWidget(256, 256);
+    CompositorOptions options;
+    RefPtr<CompositorWidget> proxy =
+        new InProcessCompositorWidget(options, widget);
+    compositor = new BasicCompositor(nullptr, proxy);
+  }
+  return compositor.forget();
+}
+
+/**
+ * This function checks if the textures react correctly when setting them to
+ * BasicCompositor.
+ */
+static void CheckCompatibilityWithBasicCompositor(
+    LayersBackend aBackends, nsTArray<RefPtr<TextureHost>>& aTextures) {
+  RefPtr<Compositor> compositor = CreateBasicCompositor();
+  for (uint32_t i = 0; i < aTextures.Length(); i++) {
+    if (!aTextures[i]) {
+      continue;
+    }
+    aTextures[i]->SetTextureSourceProvider(compositor);
+
+    // The lock function will fail if the texture is not compatible with
+    // BasicCompositor.
+    bool lockResult = aTextures[i]->Lock();
+    if (aBackends != LayersBackend::LAYERS_BASIC) {
+      EXPECT_FALSE(lockResult);
+    } else {
+      EXPECT_TRUE(lockResult);
+    }
+    if (lockResult) {
+      aTextures[i]->Unlock();
+    }
+  }
+}
+
+TEST(Gfx, TestTextureCompatibility)
+{
+  nsTArray<LayersBackend> backendHints;
+  RefPtr<TestSurfaceAllocator> deallocator = new TestSurfaceAllocator();
+
+  GetPlatformBackends(backendHints);
+  for (uint32_t i = 0; i < backendHints.Length(); i++) {
+    nsTArray<RefPtr<TextureClient>> textureClients;
+    nsTArray<RefPtr<TextureHost>> textureHosts;
+
+    CreateTextureWithBackend(backendHints[i], deallocator, textureClients,
+                             textureHosts);
+    CheckCompatibilityWithBasicCompositor(backendHints[i], textureHosts);
+  }
+}