cbf59e0e39
The purpose of this is to delay acquiring the next drawable in the swapchain to avoid stalling and gain better parallel execution between the CPU and GPU. Change-Id: I40ef7672394fd00616de43685530d2feaf7cab2d Reviewed-on: https://skia-review.googlesource.com/c/skia/+/249005 Reviewed-by: Greg Daniel <egdaniel@google.com> Commit-Queue: Jim Van Verth <jvanverth@google.com>
53 lines
1.5 KiB
Objective-C
53 lines
1.5 KiB
Objective-C
/*
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* Copyright 2019 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef MetalWindowContext_DEFINED
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#define MetalWindowContext_DEFINED
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkSurface.h"
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#include "tools/sk_app/WindowContext.h"
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#import <Metal/Metal.h>
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#import <QuartzCore/CAMetalLayer.h>
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namespace sk_app {
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class MetalWindowContext : public WindowContext {
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public:
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sk_sp<SkSurface> getBackbufferSurface() override;
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bool isValid() override { return fValid; }
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void swapBuffers() override;
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void setDisplayParams(const DisplayParams& params) override;
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protected:
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MetalWindowContext(const DisplayParams&);
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// This should be called by subclass constructor. It is also called when window/display
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// parameters change. This will in turn call onInitializeContext().
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void initializeContext();
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virtual bool onInitializeContext() = 0;
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// This should be called by subclass destructor. It is also called when window/display
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// parameters change prior to initializing a new Metal context. This will in turn call
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// onDestroyContext().
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void destroyContext();
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virtual void onDestroyContext() = 0;
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bool fValid;
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id<MTLDevice> fDevice;
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id<MTLCommandQueue> fQueue;
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CAMetalLayer* fMetalLayer;
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GrMTLHandle fDrawableHandle;
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};
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} // namespace sk_app
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#endif
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