GrPath.cpp revision 0a657bbc2c6fc9daf699942e023050536d5ec95f 
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
10SK_DEFINE_INST_COUNT(GrPath)
11
12GrResourceKey GrPath::ComputeKey(const SkPath& path, const SkStrokeRec& stroke) {
13    static const GrResourceKey::ResourceType gPathResourceType = GrResourceKey::GenerateResourceType();
14    static const GrCacheID::Domain gPathDomain = GrCacheID::GenerateDomain();
15
16    GrCacheID::Key key;
17    uint32_t* keyData = key.fData32;
18    keyData[0] = path.getGenerationID();
19
20    SK_COMPILE_ASSERT(SkPaint::kJoinCount <= 3, cap_shift_will_be_wrong);
21    keyData[1] = stroke.needToApply();
22    if (0 != keyData[1]) {
23        keyData[1] |= stroke.getJoin() << 1;
24        keyData[1] |= stroke.getCap() << 3;
25        keyData[2] = static_cast<uint32_t>(stroke.getMiter());
26        keyData[3] = static_cast<uint32_t>(stroke.getWidth());
27    } else {
28        keyData[2] = 0;
29        keyData[3] = 0;
30    }
31
32    return GrResourceKey(GrCacheID(gPathDomain, key), gPathResourceType, 0);
33}
34