1 files changed, 443 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/libANGLE/Image.cpp b/gfx/angle/checkout/src/libANGLE/Image.cpp
new file mode 100644
index 0000000000..0a78adea1b
--- /dev/null
+++ b/gfx/angle/checkout/src/libANGLE/Image.cpp
@@ -0,0 +1,443 @@
+//
+// 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.cpp: Implements the egl::Image class representing the EGLimage object.
+
+#include "libANGLE/Image.h"
+
+#include "common/debug.h"
+#include "common/utilities.h"
+#include "libANGLE/Context.h"
+#include "libANGLE/Renderbuffer.h"
+#include "libANGLE/Texture.h"
+#include "libANGLE/angletypes.h"
+#include "libANGLE/formatutils.h"
+#include "libANGLE/renderer/EGLImplFactory.h"
+#include "libANGLE/renderer/ImageImpl.h"
+
+namespace egl
+{
+
+namespace
+{
+gl::ImageIndex GetImageIndex(EGLenum eglTarget, const egl::AttributeMap &attribs)
+{
+    if (!IsTextureTarget(eglTarget))
+    {
+        return gl::ImageIndex();
+    }
+
+    gl::TextureTarget target = egl_gl::EGLImageTargetToTextureTarget(eglTarget);
+    GLint mip                = static_cast<GLint>(attribs.get(EGL_GL_TEXTURE_LEVEL_KHR, 0));
+    GLint layer              = static_cast<GLint>(attribs.get(EGL_GL_TEXTURE_ZOFFSET_KHR, 0));
+
+    if (target == gl::TextureTarget::_3D)
+    {
+        return gl::ImageIndex::Make3D(mip, layer);
+    }
+    else
+    {
+        ASSERT(layer == 0);
+        return gl::ImageIndex::MakeFromTarget(target, mip, 1);
+    }
+}
+
+const Display *DisplayFromContext(const gl::Context *context)
+{
+    return (context ? context->getDisplay() : nullptr);
+}
+}  // anonymous namespace
+
+ImageSibling::ImageSibling() : FramebufferAttachmentObject(), mSourcesOf(), mTargetOf() {}
+
+ImageSibling::~ImageSibling()
+{
+    // EGL images should hold a ref to their targets and siblings, a Texture should not be deletable
+    // while it is attached to an EGL image.
+    // Child class should orphan images before destruction.
+    ASSERT(mSourcesOf.empty());
+    ASSERT(mTargetOf.get() == nullptr);
+}
+
+void ImageSibling::setTargetImage(const gl::Context *context, egl::Image *imageTarget)
+{
+    ASSERT(imageTarget != nullptr);
+    mTargetOf.set(DisplayFromContext(context), imageTarget);
+    imageTarget->addTargetSibling(this);
+}
+
+angle::Result ImageSibling::orphanImages(const gl::Context *context)
+{
+    if (mTargetOf.get() != nullptr)
+    {
+        // Can't be a target and have sources.
+        ASSERT(mSourcesOf.empty());
+
+        ANGLE_TRY(mTargetOf->orphanSibling(context, this));
+        mTargetOf.set(DisplayFromContext(context), nullptr);
+    }
+    else
+    {
+        for (Image *sourceImage : mSourcesOf)
+        {
+            ANGLE_TRY(sourceImage->orphanSibling(context, this));
+        }
+        mSourcesOf.clear();
+    }
+
+    return angle::Result::Continue;
+}
+
+void ImageSibling::addImageSource(egl::Image *imageSource)
+{
+    ASSERT(imageSource != nullptr);
+    mSourcesOf.insert(imageSource);
+}
+
+void ImageSibling::removeImageSource(egl::Image *imageSource)
+{
+    ASSERT(mSourcesOf.find(imageSource) != mSourcesOf.end());
+    mSourcesOf.erase(imageSource);
+}
+
+bool ImageSibling::isEGLImageTarget() const
+{
+    return (mTargetOf.get() != nullptr);
+}
+
+gl::InitState ImageSibling::sourceEGLImageInitState() const
+{
+    ASSERT(isEGLImageTarget());
+    return mTargetOf->sourceInitState();
+}
+
+void ImageSibling::setSourceEGLImageInitState(gl::InitState initState) const
+{
+    ASSERT(isEGLImageTarget());
+    mTargetOf->setInitState(initState);
+}
+
+bool ImageSibling::isRenderable(const gl::Context *context,
+                                GLenum binding,
+                                const gl::ImageIndex &imageIndex) const
+{
+    ASSERT(isEGLImageTarget());
+    return mTargetOf->isRenderable(context);
+}
+
+void ImageSibling::notifySiblings(angle::SubjectMessage message)
+{
+    if (mTargetOf.get())
+    {
+        mTargetOf->notifySiblings(this, message);
+    }
+    for (Image *source : mSourcesOf)
+    {
+        source->notifySiblings(this, message);
+    }
+}
+
+ExternalImageSibling::ExternalImageSibling(rx::EGLImplFactory *factory,
+                                           const gl::Context *context,
+                                           EGLenum target,
+                                           EGLClientBuffer buffer,
+                                           const AttributeMap &attribs)
+    : mImplementation(factory->createExternalImageSibling(context, target, buffer, attribs))
+{}
+
+ExternalImageSibling::~ExternalImageSibling() = default;
+
+void ExternalImageSibling::onDestroy(const egl::Display *display)
+{
+    mImplementation->onDestroy(display);
+}
+
+Error ExternalImageSibling::initialize(const egl::Display *display)
+{
+    return mImplementation->initialize(display);
+}
+
+gl::Extents ExternalImageSibling::getAttachmentSize(const gl::ImageIndex &imageIndex) const
+{
+    return mImplementation->getSize();
+}
+
+gl::Format ExternalImageSibling::getAttachmentFormat(GLenum binding,
+                                                     const gl::ImageIndex &imageIndex) const
+{
+    return mImplementation->getFormat();
+}
+
+GLsizei ExternalImageSibling::getAttachmentSamples(const gl::ImageIndex &imageIndex) const
+{
+    return mImplementation->getSamples();
+}
+
+bool ExternalImageSibling::isRenderable(const gl::Context *context,
+                                        GLenum binding,
+                                        const gl::ImageIndex &imageIndex) const
+{
+    return mImplementation->isRenderable(context);
+}
+
+bool ExternalImageSibling::isTextureable(const gl::Context *context) const
+{
+    return mImplementation->isTexturable(context);
+}
+
+void ExternalImageSibling::onAttach(const gl::Context *context) {}
+
+void ExternalImageSibling::onDetach(const gl::Context *context) {}
+
+GLuint ExternalImageSibling::getId() const
+{
+    UNREACHABLE();
+    return 0;
+}
+
+gl::InitState ExternalImageSibling::initState(const gl::ImageIndex &imageIndex) const
+{
+    return gl::InitState::Initialized;
+}
+
+void ExternalImageSibling::setInitState(const gl::ImageIndex &imageIndex, gl::InitState initState)
+{}
+
+rx::ExternalImageSiblingImpl *ExternalImageSibling::getImplementation() const
+{
+    return mImplementation.get();
+}
+
+rx::FramebufferAttachmentObjectImpl *ExternalImageSibling::getAttachmentImpl() const
+{
+    return mImplementation.get();
+}
+
+ImageState::ImageState(EGLenum target, ImageSibling *buffer, const AttributeMap &attribs)
+    : label(nullptr),
+      target(target),
+      imageIndex(GetImageIndex(target, attribs)),
+      source(buffer),
+      targets(),
+      format(GL_NONE),
+      size(),
+      samples(),
+      sourceType(target)
+{}
+
+ImageState::~ImageState() {}
+
+Image::Image(rx::EGLImplFactory *factory,
+             const gl::Context *context,
+             EGLenum target,
+             ImageSibling *buffer,
+             const AttributeMap &attribs)
+    : mState(target, buffer, attribs),
+      mImplementation(factory->createImage(mState, context, target, attribs)),
+      mOrphanedAndNeedsInit(false)
+{
+    ASSERT(mImplementation != nullptr);
+    ASSERT(buffer != nullptr);
+
+    mState.source->addImageSource(this);
+}
+
+void Image::onDestroy(const Display *display)
+{
+    // All targets should hold a ref to the egl image and it should not be deleted until there are
+    // no siblings left.
+    ASSERT(mState.targets.empty());
+
+    // Make sure the implementation gets a chance to clean up before we delete the source.
+    mImplementation->onDestroy(display);
+
+    // Tell the source that it is no longer used by this image
+    if (mState.source != nullptr)
+    {
+        mState.source->removeImageSource(this);
+
+        // If the source is an external object, delete it
+        if (IsExternalImageTarget(mState.sourceType))
+        {
+            ExternalImageSibling *externalSibling = rx::GetAs<ExternalImageSibling>(mState.source);
+            externalSibling->onDestroy(display);
+            delete externalSibling;
+        }
+
+        mState.source = nullptr;
+    }
+}
+
+Image::~Image()
+{
+    SafeDelete(mImplementation);
+}
+
+void Image::setLabel(EGLLabelKHR label)
+{
+    mState.label = label;
+}
+
+EGLLabelKHR Image::getLabel() const
+{
+    return mState.label;
+}
+
+void Image::addTargetSibling(ImageSibling *sibling)
+{
+    mState.targets.insert(sibling);
+}
+
+angle::Result Image::orphanSibling(const gl::Context *context, ImageSibling *sibling)
+{
+    ASSERT(sibling != nullptr);
+
+    // notify impl
+    ANGLE_TRY(mImplementation->orphan(context, sibling));
+
+    if (mState.source == sibling)
+    {
+        // The external source of an image cannot be redefined so it cannot be orpahend.
+        ASSERT(!IsExternalImageTarget(mState.sourceType));
+
+        // If the sibling is the source, it cannot be a target.
+        ASSERT(mState.targets.find(sibling) == mState.targets.end());
+        mState.source = nullptr;
+        mOrphanedAndNeedsInit =
+            (sibling->initState(mState.imageIndex) == gl::InitState::MayNeedInit);
+    }
+    else
+    {
+        mState.targets.erase(sibling);
+    }
+
+    return angle::Result::Continue;
+}
+
+const gl::Format &Image::getFormat() const
+{
+    return mState.format;
+}
+
+bool Image::isRenderable(const gl::Context *context) const
+{
+    if (IsTextureTarget(mState.sourceType))
+    {
+        return mState.format.info->textureAttachmentSupport(context->getClientVersion(),
+                                                            context->getExtensions());
+    }
+    else if (IsRenderbufferTarget(mState.sourceType))
+    {
+        return mState.format.info->renderbufferSupport(context->getClientVersion(),
+                                                       context->getExtensions());
+    }
+    else if (IsExternalImageTarget(mState.sourceType))
+    {
+        ASSERT(mState.source != nullptr);
+        return mState.source->isRenderable(context, GL_NONE, gl::ImageIndex());
+    }
+
+    UNREACHABLE();
+    return false;
+}
+
+bool Image::isTexturable(const gl::Context *context) const
+{
+    if (IsTextureTarget(mState.sourceType))
+    {
+        return mState.format.info->textureSupport(context->getClientVersion(),
+                                                  context->getExtensions());
+    }
+    else if (IsRenderbufferTarget(mState.sourceType))
+    {
+        return true;
+    }
+    else if (IsExternalImageTarget(mState.sourceType))
+    {
+        ASSERT(mState.source != nullptr);
+        return rx::GetAs<ExternalImageSibling>(mState.source)->isTextureable(context);
+    }
+
+    UNREACHABLE();
+    return false;
+}
+
+size_t Image::getWidth() const
+{
+    return mState.size.width;
+}
+
+size_t Image::getHeight() const
+{
+    return mState.size.height;
+}
+
+size_t Image::getSamples() const
+{
+    return mState.samples;
+}
+
+rx::ImageImpl *Image::getImplementation() const
+{
+    return mImplementation;
+}
+
+Error Image::initialize(const Display *display)
+{
+    if (IsExternalImageTarget(mState.sourceType))
+    {
+        ANGLE_TRY(rx::GetAs<ExternalImageSibling>(mState.source)->initialize(display));
+    }
+
+    mState.format  = mState.source->getAttachmentFormat(GL_NONE, mState.imageIndex);
+    mState.size    = mState.source->getAttachmentSize(mState.imageIndex);
+    mState.samples = mState.source->getAttachmentSamples(mState.imageIndex);
+
+    return mImplementation->initialize(display);
+}
+
+bool Image::orphaned() const
+{
+    return (mState.source == nullptr);
+}
+
+gl::InitState Image::sourceInitState() const
+{
+    if (orphaned())
+    {
+        return mOrphanedAndNeedsInit ? gl::InitState::MayNeedInit : gl::InitState::Initialized;
+    }
+
+    return mState.source->initState(mState.imageIndex);
+}
+
+void Image::setInitState(gl::InitState initState)
+{
+    if (orphaned())
+    {
+        mOrphanedAndNeedsInit = false;
+    }
+
+    return mState.source->setInitState(mState.imageIndex, initState);
+}
+
+void Image::notifySiblings(const ImageSibling *notifier, angle::SubjectMessage message)
+{
+    if (mState.source && mState.source != notifier)
+    {
+        mState.source->onSubjectStateChange(rx::kTextureImageSiblingMessageIndex, message);
+    }
+
+    for (ImageSibling *target : mState.targets)
+    {
+        if (target != notifier)
+        {
+            target->onSubjectStateChange(rx::kTextureImageSiblingMessageIndex, message);
+        }
+    }
+}
+
+}  // namespace egl