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// 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.
#include <stddef.h>
#include <stdint.h>
#include <memory>
#include <string>
#include "base/containers/flat_set.h"
#include "base/containers/hash_tables.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "gpu/command_buffer/service/gl_utils.h"
#include "gpu/command_buffer/service/memory_tracking.h"
#include "gpu/gpu_gles2_export.h"
namespace gpu {
class GpuDriverBugWorkarounds;
namespace gles2 {
class FeatureInfo;
class Framebuffer;
class RenderbufferManager;
// Info about a Renderbuffer.
class GPU_GLES2_EXPORT Renderbuffer : public base::RefCounted<Renderbuffer> {
Renderbuffer(RenderbufferManager* manager,
GLuint client_id,
GLuint service_id);
GLuint service_id() const {
return service_id_;
GLuint client_id() const {
return client_id_;
bool cleared() const {
return cleared_;
GLenum internal_format() const {
return internal_format_;
GLsizei samples() const {
return samples_;
GLsizei width() const {
return width_;
GLsizei height() const {
return height_;
bool IsDeleted() const {
return client_id_ == 0;
void MarkAsValid() {
has_been_bound_ = true;
bool IsValid() const {
return has_been_bound_ && !IsDeleted();
// Regenerates the object backing this client_id, creating a new service_id.
// Also reattaches any framebuffers using this renderbuffer.
bool RegenerateAndBindBackingObjectIfNeeded(
const GpuDriverBugWorkarounds& workarounds);
void AddFramebufferAttachmentPoint(Framebuffer* framebuffer,
GLenum attachment);
void RemoveFramebufferAttachmentPoint(Framebuffer* framebuffer,
GLenum attachment);
size_t EstimatedSize();
size_t GetSignatureSize() const;
void AddToSignature(std::string* signature) const;
friend class RenderbufferManager;
friend class base::RefCounted<Renderbuffer>;
void set_cleared(bool cleared) {
cleared_ = cleared;
void SetInfoAndInvalidate(GLsizei samples,
GLenum internalformat,
GLsizei width,
GLsizei height);
void MarkAsDeleted() {
client_id_ = 0;
// RenderbufferManager that owns this Renderbuffer.
RenderbufferManager* manager_;
// Client side renderbuffer id.
GLuint client_id_;
// Service side renderbuffer id.
GLuint service_id_;
// Whether this renderbuffer has been cleared
bool cleared_;
// Whether this renderbuffer has been allocated.
bool allocated_;
// Whether this renderbuffer has ever been bound.
bool has_been_bound_;
// Number of samples (for multi-sampled renderbuffers)
GLsizei samples_;
// Renderbuffer internalformat set through RenderbufferStorage().
GLenum internal_format_;
// Dimensions of renderbuffer.
GLsizei width_;
GLsizei height_;
// Framebuffer objects that this renderbuffer is attached to
// (client ID, attachment).
base::flat_set<std::pair<Framebuffer*, GLenum>>
// This class keeps track of the renderbuffers and whether or not they have
// been cleared.
class GPU_GLES2_EXPORT RenderbufferManager
: public base::trace_event::MemoryDumpProvider {
RenderbufferManager(MemoryTracker* memory_tracker,
GLint max_renderbuffer_size,
GLint max_samples,
FeatureInfo* feature_info);
~RenderbufferManager() override;
GLint max_renderbuffer_size() const {
return max_renderbuffer_size_;
GLint max_samples() const {
return max_samples_;
bool HaveUnclearedRenderbuffers() const {
return num_uncleared_renderbuffers_ != 0;
void SetInfoAndInvalidate(Renderbuffer* renderbuffer,
GLsizei samples,
GLenum internalformat,
GLsizei width,
GLsizei height);
void SetCleared(Renderbuffer* renderbuffer, bool cleared);
// Must call before destruction.
void Destroy(bool have_context);
// Creates a Renderbuffer for the given renderbuffer ids.
void CreateRenderbuffer(GLuint client_id, GLuint service_id);
// Gets the renderbuffer for the given renderbuffer id.
Renderbuffer* GetRenderbuffer(GLuint client_id);
// Removes a renderbuffer for the given renderbuffer id.
void RemoveRenderbuffer(GLuint client_id);
size_t mem_represented() const {
return memory_type_tracker_->GetMemRepresented();
bool ComputeEstimatedRenderbufferSize(int width,
int height,
int samples,
int internal_format,
uint32_t* size) const;
GLenum InternalRenderbufferFormatToImplFormat(GLenum impl_format) const;
// base::trace_event::MemoryDumpProvider implementation.
bool OnMemoryDump(const base::trace_event::MemoryDumpArgs& args,
base::trace_event::ProcessMemoryDump* pmd) override;
friend class Renderbuffer;
void StartTracking(Renderbuffer* renderbuffer);
void StopTracking(Renderbuffer* renderbuffer);
std::unique_ptr<MemoryTypeTracker> memory_type_tracker_;
MemoryTracker* memory_tracker_;
GLint max_renderbuffer_size_;
GLint max_samples_;
scoped_refptr<FeatureInfo> feature_info_;
int num_uncleared_renderbuffers_;
// Counts the number of Renderbuffer allocated with 'this' as its manager.
// Allows to check no Renderbuffer will outlive this.
unsigned renderbuffer_count_;
bool have_context_;
// Info for each renderbuffer in the system.
typedef base::hash_map<GLuint, scoped_refptr<Renderbuffer> > RenderbufferMap;
RenderbufferMap renderbuffers_;
} // namespace gles2
} // namespace gpu