OLD | NEW |
| (Empty) |
1 /* | |
2 * Copyright 2013 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 #ifndef GrVertexEffect_DEFINED | |
9 #define GrVertexEffect_DEFINED | |
10 | |
11 #include "GrEffect.h" | |
12 | |
13 /** | |
14 * If an effect needs specialized vertex shader code, then it must inherit from
this class. | |
15 * Otherwise it won't be able to add vertex attribs, and it might be given a ver
texless shader | |
16 * program in emitCode. | |
17 */ | |
18 class GrVertexEffect : public GrEffect { | |
19 public: | |
20 GrVertexEffect() { fRequiresVertexShader = true; } | |
21 | |
22 protected: | |
23 /** | |
24 * Subclasses call this from their constructor to register vertex attributes
(at most | |
25 * kMaxVertexAttribs). This must only be called from the constructor because
GrEffects are | |
26 * immutable. | |
27 */ | |
28 void addVertexAttrib(GrSLType type) { | |
29 SkASSERT(fVertexAttribTypes.count() < kMaxVertexAttribs); | |
30 fVertexAttribTypes.push_back(type); | |
31 } | |
32 | |
33 private: | |
34 typedef GrEffect INHERITED; | |
35 }; | |
36 | |
37 #endif | |
OLD | NEW |