blob: 77e5b79d4ea1b89ddc5175e6148502111e9afd5b [file] [log] [blame]
* Copyright 2017 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef GrSemaphore_DEFINED
#define GrSemaphore_DEFINED
#include "include/gpu/GrBackendSemaphore.h"
#include "include/gpu/GrGpuResource.h"
* Represents a semaphore-like GPU synchronization object. This is a slightly odd fit for
* GrGpuResource because we don't care about budgeting, recycling, or read/write references for
* these. However, making it a GrGpuResource makes it simpler to handle releasing/abandoning these
* along with other resources. If more cases like this arise we could consider moving some of the
* unused functionality off of GrGpuResource.
class GrSemaphore {
virtual ~GrSemaphore() {}
// The derived class can return its GrBackendSemaphore. This is used when flushing with signal
// semaphores so we can set the client's GrBackendSemaphore object after we've created the
// internal semaphore.
virtual GrBackendSemaphore backendSemaphore() const = 0;
friend class GrGpu; // for setIsOwned
// This is only used in GrGpu to handle the case where we created a semaphore that was meant to
// be borrowed, but we failed to submit it. So we must go back and switch the semaphore to owned
// so that it gets deleted.
virtual void setIsOwned() = 0;