1 files changed, 135 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/libANGLE/renderer/d3d/TextureStorage.h b/gfx/angle/checkout/src/libANGLE/renderer/d3d/TextureStorage.h
new file mode 100644
index 0000000000..fc073f8b5a
--- /dev/null
+++ b/gfx/angle/checkout/src/libANGLE/renderer/d3d/TextureStorage.h
@@ -0,0 +1,135 @@
+//
+// Copyright 2002 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.
+//
+
+// TextureStorage.h: Defines the abstract rx::TextureStorage class.
+
+#ifndef LIBANGLE_RENDERER_D3D_TEXTURESTORAGE_H_
+#define LIBANGLE_RENDERER_D3D_TEXTURESTORAGE_H_
+
+#include "common/debug.h"
+#include "libANGLE/angletypes.h"
+
+#include <GLES2/gl2.h>
+#include <stdint.h>
+
+namespace gl
+{
+class Context;
+class ImageIndex;
+struct Box;
+struct PixelUnpackState;
+}  // namespace gl
+
+namespace angle
+{
+class Subject;
+}  // namespace angle
+
+namespace rx
+{
+class SwapChainD3D;
+class RenderTargetD3D;
+class ImageD3D;
+
+// Dirty bit messages from TextureStorage
+constexpr size_t kTextureStorageObserverMessageIndex = 0;
+
+class TextureStorage : public angle::Subject
+{
+  public:
+    TextureStorage(const std::string &label) : mKHRDebugLabel(label) {}
+    ~TextureStorage() override {}
+
+    virtual angle::Result onDestroy(const gl::Context *context);
+
+    virtual int getTopLevel() const                   = 0;
+    virtual bool isRenderTarget() const               = 0;
+    virtual bool isUnorderedAccess() const            = 0;
+    virtual bool isManaged() const                    = 0;
+    virtual bool supportsNativeMipmapFunction() const = 0;
+    virtual int getLevelCount() const                 = 0;
+
+    virtual angle::Result findRenderTarget(const gl::Context *context,
+                                           const gl::ImageIndex &index,
+                                           GLsizei samples,
+                                           RenderTargetD3D **outRT) const = 0;
+    virtual angle::Result getRenderTarget(const gl::Context *context,
+                                          const gl::ImageIndex &index,
+                                          GLsizei samples,
+                                          RenderTargetD3D **outRT)        = 0;
+    virtual angle::Result generateMipmap(const gl::Context *context,
+                                         const gl::ImageIndex &sourceIndex,
+                                         const gl::ImageIndex &destIndex) = 0;
+
+    virtual angle::Result copyToStorage(const gl::Context *context,
+                                        TextureStorage *destStorage) = 0;
+    virtual angle::Result setData(const gl::Context *context,
+                                  const gl::ImageIndex &index,
+                                  ImageD3D *image,
+                                  const gl::Box *destBox,
+                                  GLenum type,
+                                  const gl::PixelUnpackState &unpack,
+                                  const uint8_t *pixelData)          = 0;
+
+    // This is a no-op for most implementations of TextureStorage. Some (e.g. TextureStorage11_2D)
+    // might override it.
+    virtual angle::Result useLevelZeroWorkaroundTexture(const gl::Context *context,
+                                                        bool useLevelZeroTexture);
+
+    virtual void invalidateTextures() {}
+
+    // RenderToTexture methods
+    virtual angle::Result releaseMultisampledTexStorageForLevel(size_t level);
+    virtual angle::Result resolveTexture(const gl::Context *context);
+    virtual GLsizei getRenderToTextureSamples() const;
+
+    // Called by outer object when label has changed via KHR_debug extension
+    void setLabel(const std::string &newLabel);
+
+  protected:
+    virtual void onLabelUpdate() {}
+
+    const angle::Subject *mSubject;
+    std::string mKHRDebugLabel;
+};
+
+inline angle::Result TextureStorage::onDestroy(const gl::Context *context)
+{
+    return angle::Result::Continue;
+}
+
+inline angle::Result TextureStorage::useLevelZeroWorkaroundTexture(const gl::Context *context,
+                                                                   bool useLevelZeroTexture)
+{
+    return angle::Result::Continue;
+}
+
+inline angle::Result TextureStorage::releaseMultisampledTexStorageForLevel(size_t level)
+{
+    return angle::Result::Continue;
+}
+
+inline angle::Result TextureStorage::resolveTexture(const gl::Context *context)
+{
+    return angle::Result::Continue;
+}
+
+inline GLsizei TextureStorage::getRenderToTextureSamples() const
+{
+    return 0;
+}
+
+inline void TextureStorage::setLabel(const std::string &newLabel)
+{
+    mKHRDebugLabel = newLabel;
+    onLabelUpdate();
+}
+
+using TexStoragePointer = angle::UniqueObjectPointer<TextureStorage, gl::Context>;
+
+}  // namespace rx
+
+#endif  // LIBANGLE_RENDERER_D3D_TEXTURESTORAGE_H_