1/*
2 * Copyright 2012 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#include "GrPath.h"
9
10GrResourceKey GrPath::ComputeKey(const SkPath& path, const SkStrokeRec& stroke) {
11    static const GrResourceKey::ResourceType gPathResourceType = GrResourceKey::GenerateResourceType();
12    static const GrCacheID::Domain gPathDomain = GrCacheID::GenerateDomain();
13
14    GrCacheID::Key key;
15    uint32_t* keyData = key.fData32;
16    keyData[0] = path.getGenerationID();
17
18    SK_COMPILE_ASSERT(SkPaint::kJoinCount <= 3, cap_shift_will_be_wrong);
19    keyData[1] = stroke.needToApply();
20    if (0 != keyData[1]) {
21        keyData[1] |= stroke.getJoin() << 1;
22        keyData[1] |= stroke.getCap() << 3;
23        keyData[2] = static_cast<uint32_t>(stroke.getMiter());
24        keyData[3] = static_cast<uint32_t>(stroke.getWidth());
25    } else {
26        keyData[2] = 0;
27        keyData[3] = 0;
28    }
29
30    return GrResourceKey(GrCacheID(gPathDomain, key), gPathResourceType, 0);
31}
32