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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 <QtGui/qopenglshaderprogram.h>
56#include <QtCore/qcache.h>
57
58QT_BEGIN_NAMESPACE
59
60class QOpenGLProgramBinaryCache
61{
62public:
63 struct ShaderDesc {
64 ShaderDesc() { }
65 ShaderDesc(QOpenGLShader::ShaderType type, const QByteArray &source = QByteArray())
66 : type(type), source(source)
67 { }
68 QOpenGLShader::ShaderType type;
69 QByteArray source;
70 };
71 struct ProgramDesc {
72 QVector<ShaderDesc> shaders;
73 };
74
75 QOpenGLProgramBinaryCache();
76
77 bool load(const QByteArray &cacheKey, uint programId);
78 void save(const QByteArray &cacheKey, uint programId);
79
80private:
81 QString cacheFileName(const QByteArray &cacheKey) const;
82 bool verifyHeader(const QByteArray &buf) const;
83 bool setProgramBinary(uint programId, uint blobFormat, const void *p, uint blobSize);
84
85 QString m_cacheDir;
86 bool m_cacheWritable;
87 struct MemCacheEntry {
88 MemCacheEntry(const void *p, int size, uint format)
89 : blob(reinterpret_cast<const char *>(p), size),
90 format(format)
91 { }
92 QByteArray blob;
93 uint format;
94 };
95 QCache<QByteArray, MemCacheEntry> m_memCache;
96#if defined(QT_OPENGL_ES_2)
97 void (QOPENGLF_APIENTRYP programBinaryOES)(GLuint program, GLenum binaryFormat, const GLvoid *binary, GLsizei length);
98 void (QOPENGLF_APIENTRYP getProgramBinaryOES)(GLuint program, GLsizei bufSize, GLsizei *length, GLenum *binaryFormat, GLvoid *binary);
99 void initializeProgramBinaryOES(QOpenGLContext *context);
100 bool m_programBinaryOESInitialized = false;
101#endif
102};
103
104QT_END_NAMESPACE
105
106#endif
107