1 files changed, 137 insertions, 0 deletions
diff --git a/gfx/angle/src/libANGLE/Image_unittest.cpp b/gfx/angle/src/libANGLE/Image_unittest.cpp
new file mode 100755
index 000000000..0978ac678
--- /dev/null
+++ b/gfx/angle/src/libANGLE/Image_unittest.cpp
@@ -0,0 +1,137 @@
+//
+// Copyright (c) 2015 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// Image_unittest.cpp : Unittets of the Image and ImageSibling classes.
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+#include "libANGLE/Image.h"
+#include "libANGLE/Texture.h"
+#include "libANGLE/Renderbuffer.h"
+#include "libANGLE/renderer/ImageImpl_mock.h"
+#include "libANGLE/renderer/TextureImpl_mock.h"
+#include "libANGLE/renderer/RenderbufferImpl_mock.h"
+#include "tests/angle_unittests_utils.h"
+
+using ::testing::_;
+using ::testing::NiceMock;
+using ::testing::Return;
+
+namespace angle
+{
+// Verify ref counts are maintained between images and their siblings when objects are deleted
+TEST(ImageTest, RefCounting)
+{
+    NiceMock<rx::MockGLFactory> mockFactory;
+    // Create a texture and an EGL image that uses the texture as its source
+    rx::MockTextureImpl *textureImpl = new rx::MockTextureImpl();
+    EXPECT_CALL(mockFactory, createTexture(_)).WillOnce(Return(textureImpl));
+    gl::Texture *texture = new gl::Texture(&mockFactory, 1, GL_TEXTURE_2D);
+    texture->addRef();
+
+    rx::MockImageImpl *imageImpl = new rx::MockImageImpl();
+    egl::Image *image = new egl::Image(imageImpl, EGL_GL_TEXTURE_2D, texture, egl::AttributeMap());
+    image->addRef();
+
+    // Verify that the image added a ref to the texture and the texture has not added a ref to the
+    // image
+    EXPECT_EQ(texture->getRefCount(), 2u);
+    EXPECT_EQ(image->getRefCount(), 1u);
+
+    // Create a renderbuffer and set it as a target of the EGL image
+    rx::MockRenderbufferImpl *renderbufferImpl = new rx::MockRenderbufferImpl();
+    gl::Renderbuffer *renderbuffer = new gl::Renderbuffer(renderbufferImpl, 1);
+    renderbuffer->addRef();
+
+    EXPECT_CALL(*renderbufferImpl, setStorageEGLImageTarget(_))
+        .WillOnce(Return(gl::Error(GL_NO_ERROR)))
+        .RetiresOnSaturation();
+    renderbuffer->setStorageEGLImageTarget(image);
+
+    // Verify that the renderbuffer added a ref to the image and the image did not add a ref to
+    // the renderbuffer
+    EXPECT_EQ(texture->getRefCount(), 2u);
+    EXPECT_EQ(image->getRefCount(), 2u);
+    EXPECT_EQ(renderbuffer->getRefCount(), 1u);
+
+    // Simulate deletion of the texture and verify that it still exists because the image holds a
+    // ref
+    texture->release();
+    EXPECT_EQ(texture->getRefCount(), 1u);
+    EXPECT_EQ(image->getRefCount(), 2u);
+    EXPECT_EQ(renderbuffer->getRefCount(), 1u);
+
+    // Simulate deletion of the image and verify that it still exists because the renderbuffer holds
+    // a ref
+    image->release();
+    EXPECT_EQ(texture->getRefCount(), 1u);
+    EXPECT_EQ(image->getRefCount(), 1u);
+    EXPECT_EQ(renderbuffer->getRefCount(), 1u);
+
+    // Simulate deletion of the renderbuffer and verify that the deletion cascades to all objects
+    EXPECT_CALL(*imageImpl, destructor()).Times(1).RetiresOnSaturation();
+    EXPECT_CALL(*imageImpl, orphan(_))
+        .WillOnce(Return(gl::Error(GL_NO_ERROR)))
+        .RetiresOnSaturation();
+
+    EXPECT_CALL(*textureImpl, destructor()).Times(1).RetiresOnSaturation();
+    EXPECT_CALL(*renderbufferImpl, destructor()).Times(1).RetiresOnSaturation();
+
+    renderbuffer->release();
+}
+
+// Verify that respecifiying textures releases references to the Image.
+TEST(ImageTest, RespecificationReleasesReferences)
+{
+    NiceMock<rx::MockGLFactory> mockFactory;
+    // Create a texture and an EGL image that uses the texture as its source
+    rx::MockTextureImpl *textureImpl = new rx::MockTextureImpl();
+    EXPECT_CALL(mockFactory, createTexture(_)).WillOnce(Return(textureImpl));
+    gl::Texture *texture = new gl::Texture(&mockFactory, 1, GL_TEXTURE_2D);
+    texture->addRef();
+
+    gl::PixelUnpackState defaultUnpackState;
+
+    EXPECT_CALL(*textureImpl, setImage(_, _, _, _, _, _, _, _))
+        .WillOnce(Return(gl::Error(GL_NO_ERROR)))
+        .RetiresOnSaturation();
+    texture->setImage(defaultUnpackState, GL_TEXTURE_2D, 0, GL_RGBA8, gl::Extents(1, 1, 1), GL_RGBA,
+                      GL_UNSIGNED_BYTE, nullptr);
+
+    rx::MockImageImpl *imageImpl = new rx::MockImageImpl();
+    egl::Image *image = new egl::Image(imageImpl, EGL_GL_TEXTURE_2D, texture, egl::AttributeMap());
+    image->addRef();
+
+    // Verify that the image added a ref to the texture and the texture has not added a ref to the
+    // image
+    EXPECT_EQ(texture->getRefCount(), 2u);
+    EXPECT_EQ(image->getRefCount(), 1u);
+
+    // Respecify the texture and verify that the image releases its reference
+    EXPECT_CALL(*imageImpl, orphan(_))
+        .WillOnce(Return(gl::Error(GL_NO_ERROR)))
+        .RetiresOnSaturation();
+    EXPECT_CALL(*textureImpl, setImage(_, _, _, _, _, _, _, _))
+        .WillOnce(Return(gl::Error(GL_NO_ERROR)))
+        .RetiresOnSaturation();
+
+    texture->setImage(defaultUnpackState, GL_TEXTURE_2D, 0, GL_RGBA8, gl::Extents(1, 1, 1), GL_RGBA,
+                      GL_UNSIGNED_BYTE, nullptr);
+
+    EXPECT_EQ(texture->getRefCount(), 1u);
+    EXPECT_EQ(image->getRefCount(), 1u);
+
+    // Delete the texture and verify that the image still exists
+    EXPECT_CALL(*textureImpl, destructor()).Times(1).RetiresOnSaturation();
+    texture->release();
+
+    EXPECT_EQ(image->getRefCount(), 1u);
+
+    // Delete the image
+    EXPECT_CALL(*imageImpl, destructor()).Times(1).RetiresOnSaturation();
+    image->release();
+}
+}