Added PointLights to SkLights::Light

src/core/SkLights.cpp

Index: src/core/SkLights.cpp
diff --git a/src/core/SkLights.cpp b/src/core/SkLights.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..a172de4fabb52316e0c7c330170f3b6d6aec90e9
--- /dev/null
+++ b/src/core/SkLights.cpp
@@ -0,0 +1,77 @@
+
+/*
+ * 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());
+            }
+        }
+    }
+}