3a2cc2c2ec
This reverts commit5bb82cbecd. Reason for revert: <INSERT REASONING HERE> Original change's description: > Revert "Revert "Revert "Revert "Redefine the meaning of sample counts in GPU backend."""" > > This reverts commit18c52a7b52. > > Also relands "More sample count cleanup:" and "Add new GrContext queries for imagability, surfacability, and max sample count of color types" > > > Bug: skia: > Change-Id: I4028105a3a1f16ce3944e134619eb6245af6b947 > Reviewed-on: https://skia-review.googlesource.com/102940 > Reviewed-by: Brian Salomon <bsalomon@google.com> > Commit-Queue: Brian Salomon <bsalomon@google.com> TBR=egdaniel@google.com,bsalomon@google.com Change-Id: Idee23be2f1719f0bdc9305043e95a2d589bee8d1 No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: skia: Reviewed-on: https://skia-review.googlesource.com/103220 Reviewed-by: Brian Salomon <bsalomon@google.com> Commit-Queue: Brian Salomon <bsalomon@google.com>
110 lines
4.0 KiB
C++
110 lines
4.0 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 "GrSurfaceProxy.h"
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#include "GrTypesPriv.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*) override;
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GrFSAAType fsaaType() const {
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if (!fSampleCnt) {
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SkASSERT(!(fRenderTargetFlags & GrRenderTargetFlags::kMixedSampled));
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return GrFSAAType::kNone;
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}
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return (fRenderTargetFlags & GrRenderTargetFlags::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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* When instantiated does this proxy require a stencil buffer?
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*/
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void setNeedsStencil() { fNeedsStencil = true; }
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bool needsStencil() const { return fNeedsStencil; }
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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 maxWindowRectangles(const GrCaps& caps) const;
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GrRenderTargetFlags 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 GrProxyProvider; // 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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// Lazy-callback version
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// There are two main use cases for lazily-instantiated proxies:
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// basic knowledge - width, height, config, samples, origin are known
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// minimal knowledge - only config is known.
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//
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// The basic knowledge version is used for DDL where we know the type of proxy we are going to
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// use, but we don't have access to the GPU yet to instantiate it.
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//
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// The minimal knowledge version is used for CCPR where we are generating an atlas but we do not
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// know the final size until flush time.
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GrRenderTargetProxy(LazyInstantiateCallback&&, const GrSurfaceDesc&, SkBackingFit, SkBudgeted,
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uint32_t flags);
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// Wrapped version
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GrRenderTargetProxy(sk_sp<GrSurface>, GrSurfaceOrigin);
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sk_sp<GrSurface> createSurface(GrResourceProvider*) const override;
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private:
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size_t onUninstantiatedGpuMemorySize() const override;
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SkDEBUGCODE(void validateLazyTexture(const GrTexture*) override { SkASSERT(0); })
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int fSampleCnt;
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bool fNeedsStencil;
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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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GrRenderTargetFlags fRenderTargetFlags;
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typedef GrSurfaceProxy INHERITED;
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};
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#endif
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