vjiaoblack | 53da5ba | 2016-08-01 10:02:31 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016 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 | |
| 9 | #ifndef SkShadowShader_DEFINED |
| 10 | #define SkShadowShader_DEFINED |
| 11 | |
| 12 | #ifdef SK_EXPERIMENTAL_SHADOWING |
| 13 | |
| 14 | class SkLights; |
| 15 | class SkShader; |
| 16 | |
| 17 | class SK_API SkShadowShader { |
| 18 | public: |
| 19 | /** This shader combines the diffuse color in 'diffuseShader' with the shadows |
| 20 | * determined by the 'povDepthShader' and the shadow maps stored in each of the |
| 21 | * lights in 'lights' |
| 22 | */ |
| 23 | static sk_sp<SkShader> Make(sk_sp<SkShader> povDepthShader, |
| 24 | sk_sp<SkShader> diffuseShader, |
| 25 | sk_sp<SkLights> lights, |
| 26 | int diffuseWidth, int diffuseHeight); |
| 27 | |
vjiaoblack | 955e879 | 2016-08-05 07:55:01 -0700 | [diff] [blame^] | 28 | // The shadow shader supports any number of ambient lights, but only |
| 29 | // 4 non-ambient lights (currently just refers to directional lights). |
| 30 | static constexpr int kMaxNonAmbientLights = 4; |
| 31 | |
vjiaoblack | 53da5ba | 2016-08-01 10:02:31 -0700 | [diff] [blame] | 32 | SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP() |
| 33 | }; |
| 34 | |
| 35 | #endif |
| 36 | #endif |