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)33 ResolvedRenderState::ResolvedRenderState(LinearAllocator& allocator, Snapshot& snapshot,
34 const RecordedOp& recordedOp, bool expandForStroke) {
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 }
44 transform.mapRect(clippedBounds);
45 if (CC_UNLIKELY(expandForStroke
46 && (!transform.isPureTranslate() || recordedOp.paint->getStrokeWidth() < 1.0f))) {
47 // account for hairline stroke when stroke may be < 1 scaled pixel
48 // Non translate || strokeWidth < 1 is conservative, but will cover all cases
49 clippedBounds.outset(0.5f);
50 }
51
52 // resolvedClipRect = intersect(parentMatrix * localClip, parentClip)
53 clipState = snapshot.serializeIntersectedClip(allocator,
54 recordedOp.localClip, *(snapshot.transform));
55 LOG_ALWAYS_FATAL_IF(!clipState, "must clip!");
56
57 const Rect& clipRect = clipState->rect;
58 if (CC_UNLIKELY(clipRect.isEmpty() || !clippedBounds.intersects(clipRect))) {
59 // Rejected based on either empty clip, or bounds not intersecting with clip
60
61 // Note: we could rewind the clipState object in situations where the clipRect is empty,
62 // but *only* if the caching logic within ClipArea was aware of the rewind.
63 clipState = nullptr;
64 clippedBounds.setEmpty();
65 } else {
66 // Not rejected! compute true clippedBounds, clipSideFlags, and path mask
67 clipSideFlags = computeClipSideFlags(clipRect, clippedBounds);
68 clippedBounds.doIntersect(clipRect);
69
70 if (CC_UNLIKELY(snapshot.projectionPathMask)) {
71 // map projection path mask from render target space into op space,
72 // so intersection with op geometry is possible
73 Matrix4 inverseTransform;
74 inverseTransform.loadInverse(transform);
75 SkMatrix skInverseTransform;
76 inverseTransform.copyTo(skInverseTransform);
77
78 auto localMask = allocator.create<SkPath>();
79 snapshot.projectionPathMask->transform(skInverseTransform, localMask);
80 localProjectionPathMask = localMask;
81 }
82 }
83 }
84
ResolvedRenderState(LinearAllocator & allocator,Snapshot & snapshot,const Matrix4 & localTransform,const ClipBase * localClip)85 ResolvedRenderState::ResolvedRenderState(LinearAllocator& allocator, Snapshot& snapshot,
86 const Matrix4& localTransform, const ClipBase* localClip) {
87 transform.loadMultiply(*snapshot.transform, localTransform);
88 clipState = snapshot.serializeIntersectedClip(allocator, localClip, *(snapshot.transform));
89 clippedBounds = clipState->rect;
90 clipSideFlags = OpClipSideFlags::Full;
91 localProjectionPathMask = nullptr;
92 }
93
ResolvedRenderState(LinearAllocator & allocator,Snapshot & snapshot)94 ResolvedRenderState::ResolvedRenderState(LinearAllocator& allocator, Snapshot& snapshot)
95 : transform(*snapshot.transform)
96 , clipState(snapshot.mutateClipArea().serializeClip(allocator))
97 , clippedBounds(clipState->rect)
98 , clipSideFlags(OpClipSideFlags::Full)
99 , localProjectionPathMask(nullptr) {}
100
ResolvedRenderState(const ClipRect * clipRect,const Rect & dstRect)101 ResolvedRenderState::ResolvedRenderState(const ClipRect* clipRect, const Rect& dstRect)
102 : transform(Matrix4::identity())
103 , clipState(clipRect)
104 , clippedBounds(dstRect)
105 , clipSideFlags(computeClipSideFlags(clipRect->rect, dstRect))
106 , localProjectionPathMask(nullptr) {
107 clippedBounds.doIntersect(clipRect->rect);
108 }
109
tryConstruct(LinearAllocator & allocator,Snapshot & snapshot,const RecordedOp & recordedOp)110 BakedOpState* BakedOpState::tryConstruct(LinearAllocator& allocator,
111 Snapshot& snapshot, const RecordedOp& recordedOp) {
112 if (CC_UNLIKELY(snapshot.getRenderTargetClip().isEmpty())) return nullptr;
113 BakedOpState* bakedState = allocator.create_trivial<BakedOpState>(
114 allocator, snapshot, recordedOp, false);
115 if (bakedState->computedState.clippedBounds.isEmpty()) {
116 // bounds are empty, so op is rejected
117 allocator.rewindIfLastAlloc(bakedState);
118 return nullptr;
119 }
120 return bakedState;
121 }
122
tryConstructUnbounded(LinearAllocator & allocator,Snapshot & snapshot,const RecordedOp & recordedOp)123 BakedOpState* BakedOpState::tryConstructUnbounded(LinearAllocator& allocator,
124 Snapshot& snapshot, const RecordedOp& recordedOp) {
125 if (CC_UNLIKELY(snapshot.getRenderTargetClip().isEmpty())) return nullptr;
126 return allocator.create_trivial<BakedOpState>(allocator, snapshot, recordedOp);
127 }
128
tryStrokeableOpConstruct(LinearAllocator & allocator,Snapshot & snapshot,const RecordedOp & recordedOp,StrokeBehavior strokeBehavior)129 BakedOpState* BakedOpState::tryStrokeableOpConstruct(LinearAllocator& allocator,
130 Snapshot& snapshot, const RecordedOp& recordedOp, StrokeBehavior strokeBehavior) {
131 if (CC_UNLIKELY(snapshot.getRenderTargetClip().isEmpty())) return nullptr;
132 bool expandForStroke = (strokeBehavior == StrokeBehavior::StyleDefined)
133 ? (recordedOp.paint && recordedOp.paint->getStyle() != SkPaint::kFill_Style)
134 : true;
135
136 BakedOpState* bakedState = allocator.create_trivial<BakedOpState>(
137 allocator, snapshot, recordedOp, expandForStroke);
138 if (bakedState->computedState.clippedBounds.isEmpty()) {
139 // bounds are empty, so op is rejected
140 // NOTE: this won't succeed if a clip was allocated
141 allocator.rewindIfLastAlloc(bakedState);
142 return nullptr;
143 }
144 return bakedState;
145 }
146
tryShadowOpConstruct(LinearAllocator & allocator,Snapshot & snapshot,const ShadowOp * shadowOpPtr)147 BakedOpState* BakedOpState::tryShadowOpConstruct(LinearAllocator& allocator,
148 Snapshot& snapshot, const ShadowOp* shadowOpPtr) {
149 if (CC_UNLIKELY(snapshot.getRenderTargetClip().isEmpty())) return nullptr;
150
151 // clip isn't empty, so construct the op
152 return allocator.create_trivial<BakedOpState>(allocator, snapshot, shadowOpPtr);
153 }
154
directConstruct(LinearAllocator & allocator,const ClipRect * clip,const Rect & dstRect,const RecordedOp & recordedOp)155 BakedOpState* BakedOpState::directConstruct(LinearAllocator& allocator,
156 const ClipRect* clip, const Rect& dstRect, const RecordedOp& recordedOp) {
157 return allocator.create_trivial<BakedOpState>(clip, dstRect, recordedOp);
158 }
159
setupOpacity(const SkPaint * paint)160 void BakedOpState::setupOpacity(const SkPaint* paint) {
161 computedState.opaqueOverClippedBounds = computedState.transform.isSimple()
162 && computedState.clipState->mode == ClipMode::Rectangle
163 && MathUtils::areEqual(alpha, 1.0f)
164 && !roundRectClipState
165 && PaintUtils::isOpaquePaint(paint);
166 }
167
168 } // namespace uirenderer
169 } // namespace android
170