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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkLights.h"
#include "SkReadBuffer.h"
sk_sp<SkLights> SkLights::MakeFromBuffer(SkReadBuffer& buf) {
int numLights = buf.readInt();
Builder builder;
for (int l = 0; l < numLights; ++l) {
bool isAmbient = buf.readBool();
bool isPoint = buf.readBool();
SkColor3f color;
if (!buf.readScalarArray(&color.fX, 3)) {
return nullptr;
}
if (isAmbient) {
builder.add(Light::MakeAmbient(color));
} else {
SkVector3 dirOrPos;
if (!buf.readScalarArray(&dirOrPos.fX, 3)) {
return nullptr;
}
sk_sp<SkImage> depthMap;
bool hasShadowMap = buf.readBool();
if (hasShadowMap) {
if (!(depthMap = buf.readImage())) {
return nullptr;
}
}
if (isPoint) {
Light light = Light::MakePoint(color, dirOrPos);
light.setShadowMap(depthMap);
builder.add(light);
} else {
Light light = Light::MakeDirectional(color, dirOrPos);
light.setShadowMap(depthMap);
builder.add(light);
}
}
}
return builder.finish();
}
void SkLights::flatten(SkWriteBuffer& buf) const {
buf.writeInt(this->numLights());
for (int l = 0; l < this->numLights(); ++l) {
const Light& light = this->light(l);
bool isAmbient = Light::kAmbient_LightType == light.type();
bool isPoint = Light::kPoint_LightType == light.type();
buf.writeBool(isAmbient);
buf.writeBool(isPoint);
buf.writeScalarArray(&light.color().fX, 3);
if (!isAmbient) {
buf.writeScalarArray(&light.dir().fX, 3);
bool hasShadowMap = light.getShadowMap() != nullptr;
buf.writeBool(hasShadowMap);
if (hasShadowMap) {
buf.writeImage(light.getShadowMap());
}
}
}
}
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