1 /*
2  * Copyright (C) 2010 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef ANDROID_HWUI_PROGRAM_CACHE_H
18 #define ANDROID_HWUI_PROGRAM_CACHE_H
19 
20 #include <utils/KeyedVector.h>
21 #include <utils/Log.h>
22 #include <utils/String8.h>
23 #include <map>
24 
25 #include <GLES2/gl2.h>
26 
27 #include "Debug.h"
28 #include "Program.h"
29 
30 namespace android {
31 namespace uirenderer {
32 
33 ///////////////////////////////////////////////////////////////////////////////
34 // Cache
35 ///////////////////////////////////////////////////////////////////////////////
36 
37 /**
38  * Generates and caches program. Programs are generated based on
39  * ProgramDescriptions.
40  */
41 class ProgramCache {
42 public:
43     explicit ProgramCache(const Extensions& extensions);
44     ~ProgramCache();
45 
46     Program* get(const ProgramDescription& description);
47 
48     void clear();
49 
50 private:
51     Program* generateProgram(const ProgramDescription& description, programid key);
52     String8 generateVertexShader(const ProgramDescription& description);
53     String8 generateFragmentShader(const ProgramDescription& description);
54     void generateBlend(String8& shader, const char* name, SkBlendMode mode);
55     void generateTextureWrap(String8& shader, GLenum wrapS, GLenum wrapT);
56 
57     void printLongString(const String8& shader) const;
58 
59     std::map<programid, std::unique_ptr<Program>> mCache;
60 
61     const bool mHasES3;
62     const bool mHasLinearBlending;
63 };  // class ProgramCache
64 
65 };  // namespace uirenderer
66 };  // namespace android
67 
68 #endif  // ANDROID_HWUI_PROGRAM_CACHE_H
69