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// Copyright 2018 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_CLIENT_IMPLEMENTATION_BASE_H_
#define GPU_COMMAND_BUFFER_CLIENT_IMPLEMENTATION_BASE_H_
#include <stddef.h>
#include <stdint.h>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "base/callback_forward.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/trace_event/memory_dump_provider.h"
#include "gpu/command_buffer/client/client_transfer_cache.h"
#include "gpu/command_buffer/client/context_support.h"
#include "gpu/command_buffer/client/gles2_impl_export.h"
#include "gpu/command_buffer/client/gpu_control_client.h"
#include "gpu/command_buffer/client/query_tracker.h"
#include "gpu/command_buffer/client/transfer_buffer.h"
#include "gpu/command_buffer/common/capabilities.h"
#include "gpu/command_buffer/common/context_result.h"
class GrDirectContext;
namespace gpu {
namespace gles2 {
class QueryTracker;
}
class CommandBufferHelper;
class GpuControl;
class MappedMemoryManager;
struct SharedMemoryLimits;
// Base class with functionality shared between GLES2Implementation and
// RasterImplementation.
class GLES2_IMPL_EXPORT ImplementationBase
: public base::trace_event::MemoryDumpProvider,
public ContextSupport,
public GpuControlClient {
public:
// The maximum result size from simple GL get commands.
static const uint32_t kMaxSizeOfSimpleResult =
16 * sizeof(uint32_t); // NOLINT.
// used for testing only. If more things are reseved add them here.
static const uint32_t kStartingOffset = kMaxSizeOfSimpleResult;
// Alignment of allocations.
static const unsigned int kAlignment = 16;
// The bucket used for results. Public for testing only.
static const uint32_t kResultBucketId = 1;
ImplementationBase(CommandBufferHelper* helper,
TransferBufferInterface* transfer_buffer,
GpuControl* gpu_control);
ImplementationBase(const ImplementationBase&) = delete;
ImplementationBase& operator=(const ImplementationBase&) = delete;
~ImplementationBase() override;
void FreeUnusedSharedMemory();
void FreeEverything();
// TODO(danakj): Move to ContextSupport once ContextProvider doesn't need to
// intercept it.
void SetLostContextCallback(base::OnceClosure callback);
const Capabilities& capabilities() const { return capabilities_; }
// ContextSupport implementation.
void FlushPendingWork() override;
void SignalSyncToken(const gpu::SyncToken& sync_token,
base::OnceClosure callback) override;
bool IsSyncTokenSignaled(const gpu::SyncToken& sync_token) override;
void SignalQuery(uint32_t query, base::OnceClosure callback) override;
void GetGpuFence(uint32_t gpu_fence_id,
base::OnceCallback<void(std::unique_ptr<gfx::GpuFence>)>
callback) override;
void SetGrContext(GrDirectContext* gr) override;
bool HasGrContextSupport() const override;
void WillCallGLFromSkia() override;
void DidCallGLFromSkia() override;
void SetDisplayTransform(gfx::OverlayTransform transform) override;
void SetFrameRate(float frame_rate) override;
// base::trace_event::MemoryDumpProvider implementation.
bool OnMemoryDump(const base::trace_event::MemoryDumpArgs& args,
base::trace_event::ProcessMemoryDump* pmd) override;
// Used by child classes to implement gpu::InterfaceBase
void GenSyncToken(GLbyte* sync_token);
void GenUnverifiedSyncToken(GLbyte* sync_token);
void VerifySyncTokens(GLbyte** sync_tokens, GLsizei count);
void WaitSyncToken(const GLbyte* sync_token);
protected:
gpu::ContextResult Initialize(const SharedMemoryLimits& limits);
// Waits for all commands to execute.
void WaitForCmd();
// Gets the value of the result.
template <typename T>
ScopedResultPtr<T> GetResultAs() {
return ScopedResultPtr<T>(transfer_buffer_);
}
int32_t GetResultShmId();
// TODO(gman): These bucket functions really seem like they belong in
// CommandBufferHelper (or maybe BucketHelper?). Unfortunately they need
// a transfer buffer to function which is currently managed by this class.
// Gets the contents of a bucket.
bool GetBucketContents(uint32_t bucket_id, std::vector<int8_t>* data);
// Sets the contents of a bucket.
void SetBucketContents(uint32_t bucket_id, const void* data, uint32_t size);
// Sets the contents of a bucket as a string.
void SetBucketAsCString(uint32_t bucket_id, const char* str);
// Gets the contents of a bucket as a string. Returns false if there is no
// string available which is a separate case from the empty string.
bool GetBucketAsString(uint32_t bucket_id, std::string* str);
// Sets the contents of a bucket as a string.
void SetBucketAsString(uint32_t bucket_id, const std::string& str);
bool GetVerifiedSyncTokenForIPC(const SyncToken& sync_token,
SyncToken* verified_sync_token);
void RunIfContextNotLost(base::OnceClosure callback);
raw_ptr<TransferBufferInterface> transfer_buffer_;
std::unique_ptr<MappedMemoryManager> mapped_memory_;
std::unique_ptr<gles2::QueryTracker> query_tracker_;
base::OnceClosure lost_context_callback_;
bool lost_context_callback_run_ = false;
const raw_ptr<GpuControl> gpu_control_;
Capabilities capabilities_;
private:
virtual void IssueShallowFlush() = 0;
virtual void SetGLError(GLenum error,
const char* function_name,
const char* msg) = 0;
raw_ptr<CommandBufferHelper> helper_;
base::WeakPtrFactory<ImplementationBase> weak_ptr_factory_{this};
};
} // namespace gpu
#endif // GPU_COMMAND_BUFFER_CLIENT_IMPLEMENTATION_BASE_H_
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