Making a sample for shadow maps for more intensive development

src/core/SkShadowShader.h

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkShadowShader_DEFINED
 #define SkShadowShader_DEFINED
 
 #ifdef SK_EXPERIMENTAL_SHADOWING
 
 class SkLights;
 class SkShader;
 
 class SK_API SkShadowShader {
 public:
     /** This shader combines the diffuse color in 'diffuseShader' with the shadows
      *  determined by the 'povDepthShader' and the shadow maps stored in each of the
      *  lights in 'lights'
      */
     static sk_sp<SkShader> Make(sk_sp<SkShader> povDepthShader,
                                 sk_sp<SkShader> diffuseShader,
                                 sk_sp<SkLights> lights,
                                 int diffuseWidth, int diffuseHeight);
 

[robertphillips, 2016/08/04 18:16:06]

// The shadow shader supports any number of ambient lights but only
kMaxNonAmbientLights. Non-ambient lights beyond the maximum will be ignored.

?

[vjiaoblack, 2016/08/04 18:55:49]

Currently, I've been told to use SkAssert instead of just ignoring, so i'll put
that into comment!

+    static constexpr int kMaxNonAmbientLights = 4;
+
     SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP()
 };
 
 #endif
 #endif