gpu: Change Produce/ConsumeTexture to allow texture sharing

gpu/command_buffer/service/texture_definition.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef GPU_COMMAND_BUFFER_SERVICE_TEXTURE_DEFINITION_H_
-#define GPU_COMMAND_BUFFER_SERVICE_TEXTURE_DEFINITION_H_
-
-#include <vector>
-
-#include "base/callback.h"
-#include "gpu/command_buffer/service/gl_utils.h"
-#include "gpu/gpu_export.h"
-
-namespace gpu {
-namespace gles2 {
-
-// A saved definition of a texture that still exists in the underlying
-// GLShareGroup and can be used to redefine a client visible texture in any
-// context using the same GLShareGroup with the corresponding service ID.
-class GPU_EXPORT TextureDefinition {
- public:
-  struct GPU_EXPORT LevelInfo {
-    LevelInfo(GLenum target,
-              GLenum internal_format,
-              GLsizei width,
-              GLsizei height,
-              GLsizei depth,
-              GLint border,
-              GLenum format,
-              GLenum type,
-              bool cleared);
-    LevelInfo();
-
-    GLenum target;
-    GLenum internal_format;
-    GLsizei width;
-    GLsizei height;
-    GLsizei depth;
-    GLint border;
-    GLenum format;
-    GLenum type;
-    bool cleared;
-  };
-
-  typedef std::vector<std::vector<LevelInfo> > LevelInfos;
-
-  typedef base::Callback<void(TextureDefinition*)> DestroyCallback;
-
-  TextureDefinition(GLenum target,
-                    GLuint service_id,
-                    GLenum min_filter,
-                    GLenum mag_filter,
-                    GLenum wrap_s,
-                    GLenum wrap_t,
-                    GLenum usage,
-                    bool immutable,
-                    bool stream_texture,
-                    const LevelInfos& level_infos);
-  ~TextureDefinition();
-
-  GLenum target() const {
-    return target_;
-  }
-
-  GLuint ReleaseServiceId();
-  GLuint service_id() const { return service_id_; }
-  GLenum min_filter() const { return min_filter_; }
-  GLenum mag_filter() const { return mag_filter_; }
-  GLenum wrap_s() const { return wrap_s_; }
-  GLenum wrap_t() const { return wrap_t_; }
-  GLenum usage() const { return usage_; }
-
-  bool immutable() const { return immutable_; }
-  bool stream_texture() const { return stream_texture_; }
-
-  const LevelInfos& level_infos() const {
-    return level_infos_;
-  }
-
- private:
-  GLenum target_;
-  GLuint service_id_;
-  GLenum min_filter_;
-  GLenum mag_filter_;
-  GLenum wrap_s_;
-  GLenum wrap_t_;
-  GLenum usage_;
-  bool immutable_;
-  bool stream_texture_;
-  std::vector<std::vector<LevelInfo> > level_infos_;
-
-  DISALLOW_COPY_AND_ASSIGN(TextureDefinition);
-};
-
-}  // namespage gles2
-}  // namespace gpu
-
-#endif  // GPU_COMMAND_BUFFER_SERVICE_TEXTURE_DEFINITION_H_