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// Copyright 2013 The Chromium Authors
// 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_CONTEXT_SUPPORT_H_
#define GPU_COMMAND_BUFFER_CLIENT_CONTEXT_SUPPORT_H_
#include <stdint.h>
#include <vector>
#include "base/containers/span.h"
#include "base/functional/callback.h"
#include "ui/gfx/gpu_fence_handle.h"
#include "ui/gfx/overlay_transform.h"
namespace gfx {
class GpuFence;
}
namespace gpu {
struct SyncToken;
class ContextSupport {
public:
// Flush any outstanding ordering barriers for all contexts.
virtual void FlushPendingWork() = 0;
// Runs |callback| when the given sync token is signalled. The sync token may
// belong to any context.
virtual void SignalSyncToken(const SyncToken& sync_token,
base::OnceClosure callback) = 0;
// Returns true if the given sync token has been signaled. The sync token must
// belong to this context. This may be called from any thread.
virtual bool IsSyncTokenSignaled(const SyncToken& sync_token) = 0;
// Runs |callback| when a query created via glCreateQueryEXT() has cleared
// passed the glEndQueryEXT() point.
virtual void SignalQuery(uint32_t query, base::OnceClosure callback) = 0;
// Fetches a GpuFenceHandle for a GpuFence that was previously created by
// glInsertGpuFenceCHROMIUM on this context.
virtual void GetGpuFence(
uint32_t gpu_fence_id,
base::OnceCallback<void(std::unique_ptr<gfx::GpuFence>)> callback) = 0;
// Indicates whether the context should aggressively free allocated resources.
// If set to true, the context will purge all temporary resources when
// flushed.
virtual void SetAggressivelyFreeResources(
bool aggressively_free_resources) = 0;
// Sets a callback to be run when an error occurs.
virtual void SetErrorMessageCallback(
base::RepeatingCallback<void(const char*, int32_t)> callback) = 0;
// Access to transfer cache functionality for OOP raster. Only
// ThreadsafeLockTransferCacheEntry can be accessed without holding the
// context lock.
// Maps a buffer that will receive serialized data for an entry to be created.
// Returns an empty span on failure. If success, must be paired with a call to
// UnmapAndCreateTransferCacheEntry.
virtual base::span<uint8_t> MapTransferCacheEntry(
uint32_t serialized_size) = 0;
// Unmaps the buffer and creates a transfer cache entry with the serialized
// data.
virtual void UnmapAndCreateTransferCacheEntry(uint32_t type, uint32_t id) = 0;
// Locks a transfer cache entry. May be called on any thread.
virtual bool ThreadsafeLockTransferCacheEntry(uint32_t type, uint32_t id) = 0;
// Unlocks transfer cache entries.
virtual void UnlockTransferCacheEntries(
const std::vector<std::pair<uint32_t, uint32_t>>& entries) = 0;
// Delete a transfer cache entry.
virtual void DeleteTransferCacheEntry(uint32_t type, uint32_t id) = 0;
virtual unsigned int GetTransferBufferFreeSize() const = 0;
protected:
ContextSupport() = default;
virtual ~ContextSupport() = default;
};
}
#endif // GPU_COMMAND_BUFFER_CLIENT_CONTEXT_SUPPORT_H_
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