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// Copyright 2014 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 <list>
#include <vector>
#include "base/callback.h"
#include "base/memory/linked_ptr.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/synchronization/lock.h"
#include "gpu/command_buffer/service/gl_utils.h"
#include "ui/gl/gl_fence.h"
namespace gfx {
class GLFence;
class GLImage;
}
namespace gpu {
namespace gles2 {
class Texture;
class NativeImageBuffer : public base::RefCountedThreadSafe<NativeImageBuffer> {
public:
static scoped_refptr<NativeImageBuffer> Create(GLuint texture_id);
virtual void BindToTexture(GLenum target) = 0;
void AddClient(gfx::GLImage* client);
void RemoveClient(gfx::GLImage* client);
bool IsClient(gfx::GLImage* client);
void WillRead(gfx::GLImage* client);
void WillWrite(gfx::GLImage* client);
void DidRead(gfx::GLImage* client);
void DidWrite(gfx::GLImage* client);
protected:
friend class base::RefCountedThreadSafe<NativeImageBuffer>;
explicit NativeImageBuffer(scoped_ptr<gfx::GLFence> write_fence);
virtual ~NativeImageBuffer();
base::Lock lock_;
struct ClientInfo {
ClientInfo(gfx::GLImage* client);
~ClientInfo();
gfx::GLImage* client;
bool needs_wait_before_read;
linked_ptr<gfx::GLFence> read_fence;
};
std::list<ClientInfo> client_infos_;
scoped_ptr<gfx::GLFence> write_fence_;
gfx::GLImage* write_client_;
DISALLOW_COPY_AND_ASSIGN(NativeImageBuffer);
};
// An immutable description that can be used to create a texture that shares
// the underlying image buffer(s).
class TextureDefinition {
public:
TextureDefinition(GLenum target,
Texture* texture,
unsigned int version,
const scoped_refptr<NativeImageBuffer>& image);
virtual ~TextureDefinition();
Texture* CreateTexture() const;
void UpdateTexture(Texture* texture) const;
unsigned int version() const { return version_; }
bool IsOlderThan(unsigned int version) const {
return (version - version_) < 0x80000000;
}
bool Matches(const Texture* texture) const;
scoped_refptr<NativeImageBuffer> image() { return image_buffer_; }
private:
struct 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;
unsigned int version_;
GLenum target_;
scoped_refptr<NativeImageBuffer> image_buffer_;
GLenum min_filter_;
GLenum mag_filter_;
GLenum wrap_s_;
GLenum wrap_t_;
GLenum usage_;
bool immutable_;
LevelInfos level_infos_;
};
} // namespage gles2
} // namespace gpu
#endif // GPU_COMMAND_BUFFER_SERVICE_TEXTURE_DEFINITION_H_
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