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 "GrStencilAttachment.h"
18 #include "GrStencilSettings.h"
19 #include "SkRectPriv.h"
20 
21 GrRenderTarget::GrRenderTarget(GrGpu* gpu, const GrSurfaceDesc& desc,
22                                GrStencilAttachment* stencil)
23         : INHERITED(gpu, desc)
24         , fSampleCnt(desc.fSampleCnt)
25         , fStencilAttachment(stencil) {
26     SkASSERT(desc.fFlags & kRenderTarget_GrSurfaceFlag);
27     SkASSERT(!this->hasMixedSamples() || fSampleCnt > 1);
28     fResolveRect = SkRectPriv::MakeILargestInverted();
29 }
30 
31 GrRenderTarget::~GrRenderTarget() = default;
32 
33 void GrRenderTarget::flagAsNeedingResolve(const SkIRect* rect) {
34     if (kCanResolve_ResolveType == getResolveType()) {
35         if (rect) {
36             fResolveRect.join(*rect);
37             if (!fResolveRect.intersect(0, 0, this->width(), this->height())) {
38                 fResolveRect.setEmpty();
39             }
40         } else {
41             fResolveRect.setLTRB(0, 0, this->width(), this->height());
42         }
43     }
44 }
45 
46 void GrRenderTarget::overrideResolveRect(const SkIRect rect) {
47     fResolveRect = rect;
48     if (fResolveRect.isEmpty()) {
49         fResolveRect = SkRectPriv::MakeILargestInverted();
50     } else {
51         if (!fResolveRect.intersect(0, 0, this->width(), this->height())) {
52             fResolveRect = SkRectPriv::MakeILargestInverted();
53         }
54     }
55 }
56 
57 void GrRenderTarget::flagAsResolved() {
58     fResolveRect = SkRectPriv::MakeILargestInverted();
59 }
60 
61 void GrRenderTarget::onRelease() {
62     fStencilAttachment = nullptr;
63 
64     INHERITED::onRelease();
65 }
66 
67 void GrRenderTarget::onAbandon() {
68     fStencilAttachment = nullptr;
69 
70     INHERITED::onAbandon();
71 }
72 
73 ///////////////////////////////////////////////////////////////////////////////
74 
75 void GrRenderTargetPriv::attachStencilAttachment(sk_sp<GrStencilAttachment> stencil) {
76     if (!stencil && !fRenderTarget->fStencilAttachment) {
77         // No need to do any work since we currently don't have a stencil attachment and
78         // we're not actually adding one.
79         return;
80     }
81     fRenderTarget->fStencilAttachment = std::move(stencil);
82     if (!fRenderTarget->completeStencilAttachment()) {
83         fRenderTarget->fStencilAttachment = nullptr;
84     }
85 }
86 
87 int GrRenderTargetPriv::numStencilBits() const {
88     SkASSERT(this->getStencilAttachment());
89     return this->getStencilAttachment()->bits();
90 }
91