skia2/tools/gpu/mtl/MtlTestContext.mm
Jim Van Verth 81b7e3df38 Create FenceSync implementation that works for all Metal configs
Bug: skia:8243
Change-Id: I609db0bf4183b3508c002f9f2d0a8a70a276edca
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/217942
Commit-Queue: Jim Van Verth <jvanverth@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
2019-06-04 14:30:32 +00:00

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/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "tools/gpu/mtl/MtlTestContext.h"
#include "include/gpu/GrContext.h"
#include "include/gpu/GrContextOptions.h"
#include "src/gpu/mtl/GrMtlUtil.h"
#ifdef SK_METAL
#import <Metal/Metal.h>
namespace {
/**
* Implements sk_gpu_test::FenceSync for Metal.
*
* Fences as MTLSharedEvents are not supported across all Metal platforms, so we do
* the next best thing and submit an empty MTLCommandBuffer and track when it's complete.
*/
class MtlFenceSync : public sk_gpu_test::FenceSync {
public:
MtlFenceSync(id<MTLCommandQueue> queue)
: fQueue(queue) {
SkDEBUGCODE(fUnfinishedSyncs = 0;)
}
~MtlFenceSync() override {
SkASSERT(!fUnfinishedSyncs);
}
sk_gpu_test::PlatformFence SK_WARN_UNUSED_RESULT insertFence() const override {
id<MTLCommandBuffer> cmdBuffer = [fQueue commandBuffer];
cmdBuffer.label = @"Fence";
[cmdBuffer commit];
SkDEBUGCODE(++fUnfinishedSyncs;)
void* cfCmdBuffer = (__bridge_retained void*)cmdBuffer;
return (sk_gpu_test::PlatformFence)cfCmdBuffer;
}
bool waitFence(sk_gpu_test::PlatformFence opaqueFence) const override {
void* cfCmdBuffer = (void*) opaqueFence;
id<MTLCommandBuffer> cmdBuffer = (__bridge id<MTLCommandBuffer>) cfCmdBuffer;
[cmdBuffer waitUntilCompleted];
return (MTLCommandBufferStatusError != cmdBuffer.status);
}
void deleteFence(sk_gpu_test::PlatformFence opaqueFence) const override {
CFRelease((void*) opaqueFence);
SkDEBUGCODE(--fUnfinishedSyncs;)
}
private:
id<MTLCommandQueue> fQueue;
SkDEBUGCODE(mutable int fUnfinishedSyncs;)
typedef sk_gpu_test::FenceSync INHERITED;
};
GR_STATIC_ASSERT(sizeof(uint64_t) <= sizeof(sk_gpu_test::PlatformFence));
class MtlTestContextImpl : public sk_gpu_test::MtlTestContext {
public:
static MtlTestContext* Create(MtlTestContext* sharedContext) {
id<MTLDevice> device;
id<MTLCommandQueue> queue;
if (sharedContext) {
MtlTestContextImpl* sharedContextImpl = (MtlTestContextImpl*) sharedContext;
device = sharedContextImpl->device();
queue = sharedContextImpl->queue();
} else {
device = MTLCreateSystemDefaultDevice();
queue = [device newCommandQueue];
}
return new MtlTestContextImpl(device, queue);
}
~MtlTestContextImpl() override { this->teardown(); }
void testAbandon() override {}
// There is really nothing to do here since we don't own any unqueued command buffers here.
void submit() override {}
void finish() override {}
sk_sp<GrContext> makeGrContext(const GrContextOptions& options) override {
return GrContext::MakeMetal((__bridge void*)fDevice,
(__bridge void*)fQueue,
options);
}
id<MTLDevice> device() { return fDevice; }
id<MTLCommandQueue> queue() { return fQueue; }
private:
MtlTestContextImpl(id<MTLDevice> device, id<MTLCommandQueue> queue)
: INHERITED(), fDevice(device), fQueue(queue) {
fFenceSync.reset(new MtlFenceSync(queue));
}
void onPlatformMakeCurrent() const override {}
std::function<void()> onPlatformGetAutoContextRestore() const override { return nullptr; }
void onPlatformSwapBuffers() const override {}
id<MTLDevice> fDevice;
id<MTLCommandQueue> fQueue;
typedef sk_gpu_test::MtlTestContext INHERITED;
};
} // anonymous namespace
namespace sk_gpu_test {
MtlTestContext* CreatePlatformMtlTestContext(MtlTestContext* sharedContext) {
return MtlTestContextImpl::Create(sharedContext);
}
} // namespace sk_gpu_test
#endif