1
2 /*
3 * Copyright 2016 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9 #include "SkColorSpaceXformer.h"
10 #include "SkLights.h"
11 #include "SkReadBuffer.h"
12
MakeFromBuffer(SkReadBuffer & buf)13 sk_sp<SkLights> SkLights::MakeFromBuffer(SkReadBuffer& buf) {
14 Builder builder;
15
16 SkColor3f ambColor;
17 if (!buf.readScalarArray(&ambColor.fX, 3)) {
18 return nullptr;
19 }
20
21 builder.setAmbientLightColor(ambColor);
22
23 int numLights = buf.readInt();
24
25 for (int l = 0; l < numLights; ++l) {
26 bool isPoint = buf.readBool();
27
28 SkColor3f color;
29 if (!buf.readScalarArray(&color.fX, 3)) {
30 return nullptr;
31 }
32
33 SkVector3 dirOrPos;
34 if (!buf.readScalarArray(&dirOrPos.fX, 3)) {
35 return nullptr;
36 }
37
38 if (isPoint) {
39 SkScalar intensity;
40 intensity = buf.readScalar();
41 Light light = Light::MakePoint(color, dirOrPos, intensity);
42 builder.add(light);
43 } else {
44 Light light = Light::MakeDirectional(color, dirOrPos);
45 builder.add(light);
46 }
47 }
48
49 return builder.finish();
50 }
51
xform_color(const SkColor3f & color,SkColorSpaceXformer * xformer)52 static SkColor3f xform_color(const SkColor3f& color, SkColorSpaceXformer* xformer) {
53 SkColor origColor = SkColorSetARGB(0xFF,
54 SkScalarRoundToInt(color.fX),
55 SkScalarRoundToInt(color.fY),
56 SkScalarRoundToInt(color.fZ));
57 SkColor xformedColor = xformer->apply(origColor);
58 return SkColor3f::Make(SkIntToScalar(SkGetPackedR32(xformedColor)),
59 SkIntToScalar(SkGetPackedG32(xformedColor)),
60 SkIntToScalar(SkGetPackedB32(xformedColor)));
61 }
62
makeColorSpace(SkColorSpaceXformer * xformer) const63 sk_sp<SkLights> SkLights::makeColorSpace(SkColorSpaceXformer* xformer) const {
64 SkLights::Builder builder;
65 for (int i = 0; i < this->numLights(); i++) {
66 Light light(fLights[i].type(), xform_color(fLights[i].color(), xformer),
67 fLights[i].fDirOrPos, fLights[i].fIntensity);
68 builder.add(light);
69 }
70 builder.setAmbientLightColor(xform_color(fAmbientLightColor, xformer));
71 return builder.finish();
72 }
73
flatten(SkWriteBuffer & buf) const74 void SkLights::flatten(SkWriteBuffer& buf) const {
75 buf.writeScalarArray(&this->ambientLightColor().fX, 3);
76
77 buf.writeInt(this->numLights());
78 for (int l = 0; l < this->numLights(); ++l) {
79 const Light& light = this->light(l);
80
81 bool isPoint = Light::kPoint_LightType == light.type();
82
83 buf.writeBool(isPoint);
84 buf.writeScalarArray(&light.color().fX, 3);
85 buf.writeScalarArray(&light.dir().fX, 3);
86
87 if (isPoint) {
88 buf.writeScalar(light.intensity());
89 }
90 }
91 }
92