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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 
24 #include <GLES2/gl2.h>
25 
26 #include "Debug.h"
27 #include "Program.h"
28 #include "Properties.h"
29 
30 namespace android {
31 namespace uirenderer {
32 
33 ///////////////////////////////////////////////////////////////////////////////
34 // Defines
35 ///////////////////////////////////////////////////////////////////////////////
36 
37 // Debug
38 #if DEBUG_PROGRAMS
39     #define PROGRAM_LOGD(...) ALOGD(__VA_ARGS__)
40 #else
41     #define PROGRAM_LOGD(...)
42 #endif
43 
44 ///////////////////////////////////////////////////////////////////////////////
45 // Cache
46 ///////////////////////////////////////////////////////////////////////////////
47 
48 /**
49  * Generates and caches program. Programs are generated based on
50  * ProgramDescriptions.
51  */
52 class ProgramCache {
53 public:
54     ProgramCache();
55     ~ProgramCache();
56 
57     Program* get(const ProgramDescription& description);
58 
59     void clear();
60 
61 private:
62     Program* generateProgram(const ProgramDescription& description, programid key);
63     String8 generateVertexShader(const ProgramDescription& description);
64     String8 generateFragmentShader(const ProgramDescription& description);
65     void generateBlend(String8& shader, const char* name, SkXfermode::Mode mode);
66     void generateTextureWrap(String8& shader, GLenum wrapS, GLenum wrapT);
67 
68     void printLongString(const String8& shader) const;
69 
70     KeyedVector<programid, Program*> mCache;
71 }; // class ProgramCache
72 
73 }; // namespace uirenderer
74 }; // namespace android
75 
76 #endif // ANDROID_HWUI_PROGRAM_CACHE_H
77