a070ed7fcc
Bug: skia:7748 Change-Id: I2fda3cde12ccdef19fe06ff287a8024b58d28ef0 Reviewed-on: https://skia-review.googlesource.com/124048 Commit-Queue: Greg Daniel <egdaniel@google.com> Reviewed-by: Robert Phillips <robertphillips@google.com>
126 lines
4.3 KiB
C++
126 lines
4.3 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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class GrRenderTargetProxyPriv;
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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 <= 1) {
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SkASSERT(!this->hasMixedSamples());
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return GrFSAAType::kNone;
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}
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return this->hasMixedSamples() ? GrFSAAType::kMixedSamples : 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 (One 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 (One 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() ? 1 : fSampleCnt;
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}
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int maxWindowRectangles(const GrCaps& caps) const;
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// TODO: move this to a priv class!
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bool refsWrappedObjects() const;
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// Provides access to special purpose functions.
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GrRenderTargetProxyPriv rtPriv();
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const GrRenderTargetProxyPriv rtPriv() const;
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protected:
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friend class GrProxyProvider; // for ctors
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friend class GrRenderTargetProxyPriv;
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// Deferred version
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GrRenderTargetProxy(const GrCaps&, const GrSurfaceDesc&, GrSurfaceOrigin, SkBackingFit,
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SkBudgeted, GrInternalSurfaceFlags);
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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&&, LazyInstantiationType lazyType,
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const GrSurfaceDesc&, GrSurfaceOrigin, SkBackingFit, SkBudgeted,
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GrInternalSurfaceFlags);
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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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void setHasMixedSamples() {
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fSurfaceFlags |= GrInternalSurfaceFlags::kMixedSampled;
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}
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bool hasMixedSamples() const { return fSurfaceFlags & GrInternalSurfaceFlags::kMixedSampled; }
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void setSupportsWindowRects() {
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fSurfaceFlags |= GrInternalSurfaceFlags::kWindowRectsSupport;
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}
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bool supportsWindowRects() const {
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return fSurfaceFlags & GrInternalSurfaceFlags::kWindowRectsSupport;
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}
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void setGLRTFBOIDIs0() {
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fSurfaceFlags |= GrInternalSurfaceFlags::kGLRTFBOIDIs0;
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}
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bool glRTFBOIDIs0() const {
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return fSurfaceFlags & GrInternalSurfaceFlags::kGLRTFBOIDIs0;
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}
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size_t onUninstantiatedGpuMemorySize() const override;
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SkDEBUGCODE(void onValidateSurface(const GrSurface*) override;)
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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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typedef GrSurfaceProxy INHERITED;
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};
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#endif
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