15f046866c
Can't safely rewind clip allocations, since those pointers are cached by ClipArea. Instead add early rejection to handle most cases, and update tests. Change-Id: Ic32f95cf95602f427f25761a8da1583c4495f36d
86 lines
3.6 KiB
C++
86 lines
3.6 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "BakedOpState.h"
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#include "ClipArea.h"
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namespace android {
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namespace uirenderer {
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ResolvedRenderState::ResolvedRenderState(LinearAllocator& allocator, Snapshot& snapshot,
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const RecordedOp& recordedOp, bool expandForStroke) {
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// resolvedMatrix = parentMatrix * localMatrix
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transform.loadMultiply(*snapshot.transform, recordedOp.localMatrix);
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// resolvedClippedBounds = intersect(resolvedMatrix * opBounds, resolvedClipRect)
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clippedBounds = recordedOp.unmappedBounds;
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if (CC_UNLIKELY(expandForStroke)) {
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// account for non-hairline stroke
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clippedBounds.outset(recordedOp.paint->getStrokeWidth() * 0.5f);
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}
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transform.mapRect(clippedBounds);
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if (CC_UNLIKELY(expandForStroke
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&& (!transform.isPureTranslate() || recordedOp.paint->getStrokeWidth() < 1.0f))) {
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// account for hairline stroke when stroke may be < 1 scaled pixel
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// Non translate || strokeWidth < 1 is conservative, but will cover all cases
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clippedBounds.outset(0.5f);
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}
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// resolvedClipRect = intersect(parentMatrix * localClip, parentClip)
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clipState = snapshot.mutateClipArea().serializeIntersectedClip(allocator,
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recordedOp.localClip, *(snapshot.transform));
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LOG_ALWAYS_FATAL_IF(!clipState, "must clip!");
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const Rect& clipRect = clipState->rect;
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if (CC_UNLIKELY(clipRect.isEmpty() || !clippedBounds.intersects(clipRect))) {
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// Rejected based on either empty clip, or bounds not intersecting with clip
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// Note: we could rewind the clipState object in situations where the clipRect is empty,
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// but *only* if the caching logic within ClipArea was aware of the rewind.
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clipState = nullptr;
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clippedBounds.setEmpty();
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} else {
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// Not rejected! compute true clippedBounds and clipSideFlags
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if (clipRect.left > clippedBounds.left) clipSideFlags |= OpClipSideFlags::Left;
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if (clipRect.top > clippedBounds.top) clipSideFlags |= OpClipSideFlags::Top;
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if (clipRect.right < clippedBounds.right) clipSideFlags |= OpClipSideFlags::Right;
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if (clipRect.bottom < clippedBounds.bottom) clipSideFlags |= OpClipSideFlags::Bottom;
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clippedBounds.doIntersect(clipRect);
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}
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}
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ResolvedRenderState::ResolvedRenderState(LinearAllocator& allocator, Snapshot& snapshot) {
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transform = *snapshot.transform;
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// Since the op doesn't have known bounds, we conservatively set the mapped bounds
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// to the current clipRect, and clipSideFlags to Full.
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clipState = snapshot.mutateClipArea().serializeClip(allocator);
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LOG_ALWAYS_FATAL_IF(!clipState, "clipState required");
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clippedBounds = clipState->rect;
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transform.mapRect(clippedBounds);
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clipSideFlags = OpClipSideFlags::Full;
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}
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ResolvedRenderState::ResolvedRenderState(const ClipRect* viewportRect, const Rect& dstRect)
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: transform(Matrix4::identity())
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, clipState(viewportRect)
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, clippedBounds(dstRect)
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, clipSideFlags(OpClipSideFlags::None) {}
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} // namespace uirenderer
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} // namespace android
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