TextureStorage.h - mozsearch

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//

// 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_