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39 | |
40 | #ifndef QOPENGLPROGRAMBINARYCACHE_P_H |
41 | #define QOPENGLPROGRAMBINARYCACHE_P_H |
42 | |
43 | // |
44 | // W A R N I N G |
45 | // ------------- |
46 | // |
47 | // This file is not part of the Qt API. It exists purely as an |
48 | // implementation detail. This header file may change from version to |
49 | // version without notice, or even be removed. |
50 | // |
51 | // We mean it. |
52 | // |
53 | |
54 | #include <QtGui/qtguiglobal.h> |
55 | #include <QtCore/qcache.h> |
56 | #include <QtCore/qmutex.h> |
57 | #include <QtGui/private/qopenglcontext_p.h> |
58 | #include <QtGui/private/qshader_p.h> |
59 | |
60 | QT_BEGIN_NAMESPACE |
61 | |
62 | // These classes are also used by the OpenGL backend of QRhi. They must |
63 | // therefore stay independent from QOpenGLShader(Program). Must rely only on |
64 | // QOpenGLContext/Functions. |
65 | |
66 | class QOpenGLProgramBinaryCache |
67 | { |
68 | public: |
69 | struct ShaderDesc { |
70 | ShaderDesc() { } |
71 | ShaderDesc(QShader::Stage stage, const QByteArray &source = QByteArray()) |
72 | : stage(stage), source(source) |
73 | { } |
74 | QShader::Stage stage; |
75 | QByteArray source; |
76 | }; |
77 | struct ProgramDesc { |
78 | QVector<ShaderDesc> shaders; |
79 | QByteArray cacheKey() const; |
80 | }; |
81 | |
82 | QOpenGLProgramBinaryCache(); |
83 | |
84 | bool load(const QByteArray &cacheKey, uint programId); |
85 | void save(const QByteArray &cacheKey, uint programId); |
86 | |
87 | private: |
88 | QString cacheFileName(const QByteArray &cacheKey) const; |
89 | bool (const QByteArray &buf) const; |
90 | bool setProgramBinary(uint programId, uint blobFormat, const void *p, uint blobSize); |
91 | |
92 | QString m_globalCacheDir; |
93 | QString m_localCacheDir; |
94 | QString m_currentCacheDir; |
95 | bool m_cacheWritable; |
96 | struct MemCacheEntry { |
97 | MemCacheEntry(const void *p, int size, uint format) |
98 | : blob(reinterpret_cast<const char *>(p), size), |
99 | format(format) |
100 | { } |
101 | QByteArray blob; |
102 | uint format; |
103 | }; |
104 | QCache<QByteArray, MemCacheEntry> m_memCache; |
105 | #if defined(QT_OPENGL_ES_2) |
106 | void (QOPENGLF_APIENTRYP programBinaryOES)(GLuint program, GLenum binaryFormat, const GLvoid *binary, GLsizei length); |
107 | void (QOPENGLF_APIENTRYP getProgramBinaryOES)(GLuint program, GLsizei bufSize, GLsizei *length, GLenum *binaryFormat, GLvoid *binary); |
108 | void initializeProgramBinaryOES(QOpenGLContext *context); |
109 | bool m_programBinaryOESInitialized = false; |
110 | #endif |
111 | QMutex m_mutex; |
112 | }; |
113 | |
114 | // While unlikely, one application can in theory use contexts with different versions |
115 | // or profiles. Therefore any version- or extension-specific checks must be done on a |
116 | // per-context basis, not just once per process. QOpenGLSharedResource enables this, |
117 | // although it's once-per-sharing-context-group, not per-context. Still, this should |
118 | // be good enough in practice. |
119 | class QOpenGLProgramBinarySupportCheck : public QOpenGLSharedResource |
120 | { |
121 | public: |
122 | QOpenGLProgramBinarySupportCheck(QOpenGLContext *context); |
123 | void invalidateResource() override { } |
124 | void freeResource(QOpenGLContext *) override { } |
125 | |
126 | bool isSupported() const { return m_supported; } |
127 | |
128 | private: |
129 | bool m_supported; |
130 | }; |
131 | |
132 | class QOpenGLProgramBinarySupportCheckWrapper |
133 | { |
134 | public: |
135 | QOpenGLProgramBinarySupportCheck *get(QOpenGLContext *context) |
136 | { |
137 | return m_resource.value<QOpenGLProgramBinarySupportCheck>(context); |
138 | } |
139 | |
140 | private: |
141 | QOpenGLMultiGroupSharedResource m_resource; |
142 | }; |
143 | |
144 | QT_END_NAMESPACE |
145 | |
146 | #endif |
147 | |