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      1 /*
      2  * Copyright 2011 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 
      9 #include "GrRenderTarget.h"
     10 
     11 #include "GrContext.h"
     12 #include "GrContextPriv.h"
     13 #include "GrRenderTargetContext.h"
     14 #include "GrGpu.h"
     15 #include "GrRenderTargetOpList.h"
     16 #include "GrRenderTargetPriv.h"
     17 #include "GrSamplePatternDictionary.h"
     18 #include "GrStencilAttachment.h"
     19 #include "GrStencilSettings.h"
     20 #include "SkRectPriv.h"
     21 
     22 GrRenderTarget::GrRenderTarget(GrGpu* gpu, const GrSurfaceDesc& desc,
     23                                GrStencilAttachment* stencil)
     24         : INHERITED(gpu, desc)
     25         , fSampleCnt(desc.fSampleCnt)
     26         , fSamplePatternKey(GrSamplePatternDictionary::kInvalidSamplePatternKey)
     27         , fStencilAttachment(stencil) {
     28     SkASSERT(desc.fFlags & kRenderTarget_GrSurfaceFlag);
     29     SkASSERT(!this->hasMixedSamples() || fSampleCnt > 1);
     30     fResolveRect = SkRectPriv::MakeILargestInverted();
     31 }
     32 
     33 GrRenderTarget::~GrRenderTarget() = default;
     34 
     35 void GrRenderTarget::flagAsNeedingResolve(const SkIRect* rect) {
     36     if (kCanResolve_ResolveType == getResolveType()) {
     37         if (rect) {
     38             fResolveRect.join(*rect);
     39             if (!fResolveRect.intersect(0, 0, this->width(), this->height())) {
     40                 fResolveRect.setEmpty();
     41             }
     42         } else {
     43             fResolveRect.setLTRB(0, 0, this->width(), this->height());
     44         }
     45     }
     46 }
     47 
     48 void GrRenderTarget::overrideResolveRect(const SkIRect rect) {
     49     fResolveRect = rect;
     50     if (fResolveRect.isEmpty()) {
     51         fResolveRect = SkRectPriv::MakeILargestInverted();
     52     } else {
     53         if (!fResolveRect.intersect(0, 0, this->width(), this->height())) {
     54             fResolveRect = SkRectPriv::MakeILargestInverted();
     55         }
     56     }
     57 }
     58 
     59 void GrRenderTarget::flagAsResolved() {
     60     fResolveRect = SkRectPriv::MakeILargestInverted();
     61 }
     62 
     63 void GrRenderTarget::onRelease() {
     64     fStencilAttachment = nullptr;
     65 
     66     INHERITED::onRelease();
     67 }
     68 
     69 void GrRenderTarget::onAbandon() {
     70     fStencilAttachment = nullptr;
     71 
     72     INHERITED::onAbandon();
     73 }
     74 
     75 ///////////////////////////////////////////////////////////////////////////////
     76 
     77 void GrRenderTargetPriv::attachStencilAttachment(sk_sp<GrStencilAttachment> stencil) {
     78     if (!stencil && !fRenderTarget->fStencilAttachment) {
     79         // No need to do any work since we currently don't have a stencil attachment and
     80         // we're not actually adding one.
     81         return;
     82     }
     83     fRenderTarget->fStencilAttachment = std::move(stencil);
     84     if (!fRenderTarget->completeStencilAttachment()) {
     85         fRenderTarget->fStencilAttachment = nullptr;
     86     }
     87 }
     88 
     89 int GrRenderTargetPriv::numStencilBits() const {
     90     SkASSERT(this->getStencilAttachment());
     91     return this->getStencilAttachment()->bits();
     92 }
     93 
     94 int GrRenderTargetPriv::getSamplePatternKey(const GrPipeline& pipeline) const {
     95     SkASSERT(fRenderTarget->fSampleCnt > 1);
     96     if (GrSamplePatternDictionary::kInvalidSamplePatternKey == fRenderTarget->fSamplePatternKey) {
     97         fRenderTarget->fSamplePatternKey =
     98                 fRenderTarget->getGpu()->findOrAssignSamplePatternKey(fRenderTarget, pipeline);
     99     }
    100     SkASSERT(GrSamplePatternDictionary::kInvalidSamplePatternKey
    101                      != fRenderTarget->fSamplePatternKey);
    102     // Verify we always have the same sample pattern key every time this is called, regardless of
    103     // pipeline state.
    104     SkASSERT(fRenderTarget->getGpu()->findOrAssignSamplePatternKey(fRenderTarget, pipeline)
    105                      == fRenderTarget->fSamplePatternKey);
    106     return fRenderTarget->fSamplePatternKey;
    107 }
    108