eee4d6e4e8
From an off-line conversation: The longer term idea will be to create a helper class isolates the ability to instantiate proxies until flush time. The peek* methods could then be moved to GrSurfaceProxy. Change-Id: I8e8c02c098475b77d515791c0d6b81f7e4a327dd Reviewed-on: https://skia-review.googlesource.com/18076 Commit-Queue: Robert Phillips <robertphillips@google.com> Reviewed-by: Brian Salomon <bsalomon@google.com>
91 lines
3.0 KiB
C++
91 lines
3.0 KiB
C++
/*
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* Copyright 2016 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 GrRenderTargetProxy_DEFINED
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#define GrRenderTargetProxy_DEFINED
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#include "GrRenderTarget.h"
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#include "GrSurfaceProxy.h"
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#include "GrTypes.h"
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class GrResourceProvider;
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// This class delays the acquisition of RenderTargets until they are actually
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// required
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// Beware: the uniqueID of the RenderTargetProxy will usually be different than
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// the uniqueID of the RenderTarget it represents!
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class GrRenderTargetProxy : virtual public GrSurfaceProxy {
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public:
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GrRenderTargetProxy* asRenderTargetProxy() override { return this; }
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const GrRenderTargetProxy* asRenderTargetProxy() const override { return this; }
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// Actually instantiate the backing rendertarget, if necessary.
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bool instantiate(GrResourceProvider* resourceProvider) override;
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GrFSAAType fsaaType() const {
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if (!fSampleCnt) {
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SkASSERT(!(fRenderTargetFlags & GrRenderTarget::Flags::kMixedSampled));
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return GrFSAAType::kNone;
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}
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return (fRenderTargetFlags & GrRenderTarget::Flags::kMixedSampled)
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? GrFSAAType::kMixedSamples
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: GrFSAAType::kUnifiedMSAA;
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}
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/**
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* Returns the number of samples/pixel in the stencil buffer (Zero if non-MSAA).
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*/
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int numStencilSamples() const { return fSampleCnt; }
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/**
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* Returns the number of samples/pixel in the color buffer (Zero if non-MSAA or mixed sampled).
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*/
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int numColorSamples() const {
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return GrFSAAType::kMixedSamples == this->fsaaType() ? 0 : fSampleCnt;
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}
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int worstCaseWidth() const;
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int worstCaseHeight() const;
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int maxWindowRectangles(const GrCaps& caps) const;
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GrRenderTarget::Flags testingOnly_getFlags() const;
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// TODO: move this to a priv class!
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bool refsWrappedObjects() const;
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protected:
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friend class GrSurfaceProxy; // for ctors
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// Deferred version
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GrRenderTargetProxy(const GrCaps&, const GrSurfaceDesc&,
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SkBackingFit, SkBudgeted, uint32_t flags);
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// Wrapped version
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GrRenderTargetProxy(sk_sp<GrSurface>);
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private:
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size_t onUninstantiatedGpuMemorySize() const override;
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int fSampleCnt;
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// For wrapped render targets the actual GrRenderTarget is stored in the GrIORefProxy class.
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// For deferred proxies that pointer is filled in when we need to instantiate the
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// deferred resource.
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// These don't usually get computed until the render target is instantiated, but the render
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// target proxy may need to answer queries about it before then. And since in the deferred case
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// we know the newly created render target will be internal, we are able to precompute what the
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// flags will ultimately end up being. In the wrapped case we just copy the wrapped
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// rendertarget's info here.
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GrRenderTarget::Flags fRenderTargetFlags;
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typedef GrSurfaceProxy INHERITED;
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};
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#endif
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