1 /*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "BakedOpState.h"
18
19 #include "ClipArea.h"
20
21 namespace android {
22 namespace uirenderer {
23
computeClipSideFlags(const Rect & clip,const Rect & bounds)24 static int computeClipSideFlags(const Rect& clip, const Rect& bounds) {
25 int clipSideFlags = 0;
26 if (clip.left > bounds.left) clipSideFlags |= OpClipSideFlags::Left;
27 if (clip.top > bounds.top) clipSideFlags |= OpClipSideFlags::Top;
28 if (clip.right < bounds.right) clipSideFlags |= OpClipSideFlags::Right;
29 if (clip.bottom < bounds.bottom) clipSideFlags |= OpClipSideFlags::Bottom;
30 return clipSideFlags;
31 }
32
ResolvedRenderState(LinearAllocator & allocator,Snapshot & snapshot,const RecordedOp & recordedOp,bool expandForStroke,bool expandForPathTexture)33 ResolvedRenderState::ResolvedRenderState(LinearAllocator& allocator, Snapshot& snapshot,
34 const RecordedOp& recordedOp, bool expandForStroke, bool expandForPathTexture) {
35 // resolvedMatrix = parentMatrix * localMatrix
36 transform.loadMultiply(*snapshot.transform, recordedOp.localMatrix);
37
38 // resolvedClippedBounds = intersect(resolvedMatrix * opBounds, resolvedClipRect)
39 clippedBounds = recordedOp.unmappedBounds;
40 if (CC_UNLIKELY(expandForStroke)) {
41 // account for non-hairline stroke
42 clippedBounds.outset(recordedOp.paint->getStrokeWidth() * 0.5f);
43 } else if (CC_UNLIKELY(expandForPathTexture)) {
44 clippedBounds.outset(1);
45 }
46 transform.mapRect(clippedBounds);
47 if (CC_UNLIKELY(expandForStroke
48 && (!transform.isPureTranslate() || recordedOp.paint->getStrokeWidth() < 1.0f))) {
49 // account for hairline stroke when stroke may be < 1 scaled pixel
50 // Non translate || strokeWidth < 1 is conservative, but will cover all cases
51 clippedBounds.outset(0.5f);
52 }
53
54 // resolvedClipRect = intersect(parentMatrix * localClip, parentClip)
55 clipState = snapshot.serializeIntersectedClip(allocator,
56 recordedOp.localClip, *(snapshot.transform));
57 LOG_ALWAYS_FATAL_IF(!clipState, "must clip!");
58
59 const Rect& clipRect = clipState->rect;
60 if (CC_UNLIKELY(clipRect.isEmpty() || !clippedBounds.intersects(clipRect))) {
61 // Rejected based on either empty clip, or bounds not intersecting with clip
62
63 // Note: we could rewind the clipState object in situations where the clipRect is empty,
64 // but *only* if the caching logic within ClipArea was aware of the rewind.
65 clipState = nullptr;
66 clippedBounds.setEmpty();
67 } else {
68 // Not rejected! compute true clippedBounds, clipSideFlags, and path mask
69 clipSideFlags = computeClipSideFlags(clipRect, clippedBounds);
70 clippedBounds.doIntersect(clipRect);
71
72 if (CC_UNLIKELY(snapshot.projectionPathMask)) {
73 // map projection path mask from render target space into op space,
74 // so intersection with op geometry is possible
75 Matrix4 inverseTransform;
76 inverseTransform.loadInverse(transform);
77 SkMatrix skInverseTransform;
78 inverseTransform.copyTo(skInverseTransform);
79
80 auto localMask = allocator.create<SkPath>();
81 snapshot.projectionPathMask->transform(skInverseTransform, localMask);
82 localProjectionPathMask = localMask;
83 }
84 }
85 }
86
ResolvedRenderState(LinearAllocator & allocator,Snapshot & snapshot,const Matrix4 & localTransform,const ClipBase * localClip)87 ResolvedRenderState::ResolvedRenderState(LinearAllocator& allocator, Snapshot& snapshot,
88 const Matrix4& localTransform, const ClipBase* localClip) {
89 transform.loadMultiply(*snapshot.transform, localTransform);
90 clipState = snapshot.serializeIntersectedClip(allocator, localClip, *(snapshot.transform));
91 clippedBounds = clipState->rect;
92 clipSideFlags = OpClipSideFlags::Full;
93 localProjectionPathMask = nullptr;
94 }
95
ResolvedRenderState(LinearAllocator & allocator,Snapshot & snapshot)96 ResolvedRenderState::ResolvedRenderState(LinearAllocator& allocator, Snapshot& snapshot)
97 : transform(*snapshot.transform)
98 , clipState(snapshot.mutateClipArea().serializeClip(allocator))
99 , clippedBounds(clipState->rect)
100 , clipSideFlags(OpClipSideFlags::Full)
101 , localProjectionPathMask(nullptr) {}
102
ResolvedRenderState(const ClipRect * clipRect,const Rect & dstRect)103 ResolvedRenderState::ResolvedRenderState(const ClipRect* clipRect, const Rect& dstRect)
104 : transform(Matrix4::identity())
105 , clipState(clipRect)
106 , clippedBounds(dstRect)
107 , clipSideFlags(computeClipSideFlags(clipRect->rect, dstRect))
108 , localProjectionPathMask(nullptr) {
109 clippedBounds.doIntersect(clipRect->rect);
110 }
111
tryConstruct(LinearAllocator & allocator,Snapshot & snapshot,const RecordedOp & recordedOp)112 BakedOpState* BakedOpState::tryConstruct(LinearAllocator& allocator,
113 Snapshot& snapshot, const RecordedOp& recordedOp) {
114 if (CC_UNLIKELY(snapshot.getRenderTargetClip().isEmpty())) return nullptr;
115 BakedOpState* bakedState = allocator.create_trivial<BakedOpState>(
116 allocator, snapshot, recordedOp, false, false);
117 if (bakedState->computedState.clippedBounds.isEmpty()) {
118 // bounds are empty, so op is rejected
119 allocator.rewindIfLastAlloc(bakedState);
120 return nullptr;
121 }
122 return bakedState;
123 }
124
tryConstructUnbounded(LinearAllocator & allocator,Snapshot & snapshot,const RecordedOp & recordedOp)125 BakedOpState* BakedOpState::tryConstructUnbounded(LinearAllocator& allocator,
126 Snapshot& snapshot, const RecordedOp& recordedOp) {
127 if (CC_UNLIKELY(snapshot.getRenderTargetClip().isEmpty())) return nullptr;
128 return allocator.create_trivial<BakedOpState>(allocator, snapshot, recordedOp);
129 }
130
tryStrokeableOpConstruct(LinearAllocator & allocator,Snapshot & snapshot,const RecordedOp & recordedOp,StrokeBehavior strokeBehavior,bool expandForPathTexture)131 BakedOpState* BakedOpState::tryStrokeableOpConstruct(LinearAllocator& allocator,
132 Snapshot& snapshot, const RecordedOp& recordedOp, StrokeBehavior strokeBehavior,
133 bool expandForPathTexture) {
134 if (CC_UNLIKELY(snapshot.getRenderTargetClip().isEmpty())) return nullptr;
135 bool expandForStroke = (strokeBehavior == StrokeBehavior::Forced
136 || (recordedOp.paint && recordedOp.paint->getStyle() != SkPaint::kFill_Style));
137
138 BakedOpState* bakedState = allocator.create_trivial<BakedOpState>(
139 allocator, snapshot, recordedOp, expandForStroke, expandForPathTexture);
140 if (bakedState->computedState.clippedBounds.isEmpty()) {
141 // bounds are empty, so op is rejected
142 // NOTE: this won't succeed if a clip was allocated
143 allocator.rewindIfLastAlloc(bakedState);
144 return nullptr;
145 }
146 return bakedState;
147 }
148
tryShadowOpConstruct(LinearAllocator & allocator,Snapshot & snapshot,const ShadowOp * shadowOpPtr)149 BakedOpState* BakedOpState::tryShadowOpConstruct(LinearAllocator& allocator,
150 Snapshot& snapshot, const ShadowOp* shadowOpPtr) {
151 if (CC_UNLIKELY(snapshot.getRenderTargetClip().isEmpty())) return nullptr;
152
153 // clip isn't empty, so construct the op
154 return allocator.create_trivial<BakedOpState>(allocator, snapshot, shadowOpPtr);
155 }
156
directConstruct(LinearAllocator & allocator,const ClipRect * clip,const Rect & dstRect,const RecordedOp & recordedOp)157 BakedOpState* BakedOpState::directConstruct(LinearAllocator& allocator,
158 const ClipRect* clip, const Rect& dstRect, const RecordedOp& recordedOp) {
159 return allocator.create_trivial<BakedOpState>(clip, dstRect, recordedOp);
160 }
161
setupOpacity(const SkPaint * paint)162 void BakedOpState::setupOpacity(const SkPaint* paint) {
163 computedState.opaqueOverClippedBounds = computedState.transform.isSimple()
164 && computedState.clipState->mode == ClipMode::Rectangle
165 && MathUtils::areEqual(alpha, 1.0f)
166 && !roundRectClipState
167 && PaintUtils::isOpaquePaint(paint);
168 }
169
170 } // namespace uirenderer
171 } // namespace android
172