diff options
Diffstat (limited to 'src/opengl/qgl_p.h')
| -rw-r--r-- | src/opengl/qgl_p.h | 185 |
1 files changed, 134 insertions, 51 deletions
diff --git a/src/opengl/qgl_p.h b/src/opengl/qgl_p.h index 8e472e5..0104f07 100644 --- a/src/opengl/qgl_p.h +++ b/src/opengl/qgl_p.h @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** @@ -133,9 +133,6 @@ public: : ref(1) { opts = QGL::DoubleBuffer | QGL::DepthBuffer | QGL::Rgba | QGL::DirectRendering | QGL::StencilBuffer; -#if defined(QT_OPENGL_ES_2) - opts |= QGL::SampleBuffers; -#endif pln = 0; depthSize = accumSize = stencilSize = redSize = greenSize = blueSize = alphaSize = -1; numSamples = -1; @@ -222,10 +219,11 @@ public: class QGLContextResource; class QGLSharedResourceGuard; +typedef QHash<QString, GLuint> QGLDDSCache; + // QGLContextPrivate has the responsibility of creating context groups. -// QGLContextPrivate and QGLShareRegister will both maintain the reference counter and destroy +// QGLContextPrivate maintains the reference counter and destroys // context groups when needed. -// QGLShareRegister has the responsibility of keeping the context pointer up to date. class QGLContextGroup { public: @@ -234,9 +232,13 @@ public: QGLExtensionFuncs &extensionFuncs() {return m_extensionFuncs;} const QGLContext *context() const {return m_context;} bool isSharing() const { return m_shares.size() >= 2; } + QList<const QGLContext *> shares() const { return m_shares; } void addGuard(QGLSharedResourceGuard *guard); void removeGuard(QGLSharedResourceGuard *guard); + + static void addShare(const QGLContext *context, const QGLContext *share); + static void removeShare(const QGLContext *context); private: QGLContextGroup(const QGLContext *context) : m_context(context), m_guards(0), m_refs(1) { } @@ -246,17 +248,79 @@ private: QHash<QGLContextResource *, void *> m_resources; QGLSharedResourceGuard *m_guards; // double-linked list of active guards. QAtomicInt m_refs; + QGLDDSCache m_dds_cache; void cleanupResources(const QGLContext *ctx); - friend class QGLShareRegister; friend class QGLContext; friend class QGLContextPrivate; friend class QGLContextResource; }; +// Get the context that resources for "ctx" will transfer to once +// "ctx" is destroyed. Returns null if nothing is sharing with ctx. +Q_OPENGL_EXPORT const QGLContext *qt_gl_transfer_context(const QGLContext *); + +// GL extension definitions +class QGLExtensions { +public: + enum Extension { + TextureRectangle = 0x00000001, + SampleBuffers = 0x00000002, + GenerateMipmap = 0x00000004, + TextureCompression = 0x00000008, + FragmentProgram = 0x00000010, + MirroredRepeat = 0x00000020, + FramebufferObject = 0x00000040, + StencilTwoSide = 0x00000080, + StencilWrap = 0x00000100, + PackedDepthStencil = 0x00000200, + NVFloatBuffer = 0x00000400, + PixelBufferObject = 0x00000800, + FramebufferBlit = 0x00001000, + NPOTTextures = 0x00002000, + BGRATextureFormat = 0x00004000, + DDSTextureCompression = 0x00008000, + ETC1TextureCompression = 0x00010000, + PVRTCTextureCompression = 0x00020000, + FragmentShader = 0x00040000 + }; + Q_DECLARE_FLAGS(Extensions, Extension) + + static Extensions glExtensions(); + +private: + static Extensions currentContextExtensions(); +}; + +/* + QGLTemporaryContext - the main objective of this class is to have a way of + creating a GL context and making it current, without going via QGLWidget + and friends. At certain points during GL initialization we need a current + context in order decide what GL features are available, and to resolve GL + extensions. Having a light-weight way of creating such a context saves + initial application startup time, and it doesn't wind up creating recursive + conflicts. + The class currently uses a private d pointer to hide the platform specific + types. This could possibly been done inline with #ifdef'ery, but it causes + major headaches on e.g. X11 due to namespace pollution. +*/ +class QGLTemporaryContextPrivate; +class QGLTemporaryContext { +public: + QGLTemporaryContext(bool directRendering = true, QWidget *parent = 0); + ~QGLTemporaryContext(); + +private: + QScopedPointer<QGLTemporaryContextPrivate> d; +}; + class QGLTexture; +// This probably needs to grow to GL_MAX_VERTEX_ATTRIBS, but 3 is ok for now as that's +// all the GL2 engine uses: +#define QT_GL_VERTEX_ARRAY_TRACKED_COUNT 3 + class QGLContextPrivate { Q_DECLARE_PUBLIC(QGLContext) @@ -276,6 +340,9 @@ public: void cleanup(); + void setVertexAttribArrayEnabled(int arrayIndex, bool enabled = true); + void syncGlState(); // Makes sure the GL context's state is what we think it is + #if defined(Q_WS_WIN) HGLRC rc; HDC dc; @@ -288,6 +355,7 @@ public: #if defined(QT_OPENGL_ES) QEglContext *eglContext; EGLSurface eglSurface; + void destroyEglSurfaceForDevice(); #elif defined(Q_WS_X11) || defined(Q_WS_MAC) void* cx; #endif @@ -319,17 +387,22 @@ public: uint crWin : 1; uint internal_context : 1; uint version_flags_cached : 1; + uint extension_flags_cached : 1; QPaintDevice *paintDevice; QColor transpColor; QGLContext *q_ptr; QGLFormat::OpenGLVersionFlags version_flags; + QGLExtensions::Extensions extension_flags; QGLContextGroup *group; GLint max_texture_size; GLuint current_fbo; + GLuint default_fbo; QPaintEngine *active_engine; + bool vertexAttributeArraysEnabledState[QT_GL_VERTEX_ARRAY_TRACKED_COUNT]; + static inline QGLContextGroup *contextGroup(const QGLContext *ctx) { return ctx->d_ptr->group; } #ifdef Q_WS_WIN @@ -358,50 +431,8 @@ Q_SIGNALS: void aboutToDestroyContext(const QGLContext *context); }; -// GL extension definitions -class QGLExtensions { -public: - enum Extension { - TextureRectangle = 0x00000001, - SampleBuffers = 0x00000002, - GenerateMipmap = 0x00000004, - TextureCompression = 0x00000008, - FragmentProgram = 0x00000010, - MirroredRepeat = 0x00000020, - FramebufferObject = 0x00000040, - StencilTwoSide = 0x00000080, - StencilWrap = 0x00000100, - PackedDepthStencil = 0x00000200, - NVFloatBuffer = 0x00000400, - PixelBufferObject = 0x00000800, - FramebufferBlit = 0x00001000, - NPOTTextures = 0x00002000, - BGRATextureFormat = 0x00004000 - }; - Q_DECLARE_FLAGS(Extensions, Extension) - - static Extensions glExtensions; - static bool nvidiaFboNeedsFinish; - static void init(); // sys dependent - static void init_extensions(); // general: called by init() -}; - Q_DECLARE_OPERATORS_FOR_FLAGS(QGLExtensions::Extensions) - -class Q_AUTOTEST_EXPORT QGLShareRegister -{ -public: - QGLShareRegister() {} - ~QGLShareRegister() {} - - void addShare(const QGLContext *context, const QGLContext *share); - QList<const QGLContext *> shares(const QGLContext *context); - void removeShare(const QGLContext *context); -}; - -extern Q_OPENGL_EXPORT QGLShareRegister* qgl_share_reg(); - // Temporarily make a context current if not already current or // shared with the current contex. The previous context is made // current when the object goes out of scope. @@ -481,6 +512,14 @@ public: QPixmapData* boundPixmap; #endif + bool canBindCompressedTexture + (const char *buf, int len, const char *format, bool *hasAlpha); + QSize bindCompressedTexture + (const QString& fileName, const char *format = 0); + QSize bindCompressedTexture + (const char *buf, int len, const char *format = 0); + QSize bindCompressedTextureDDS(const char *buf, int len); + QSize bindCompressedTexturePVR(const char *buf, int len); }; class QGLTextureCache { @@ -517,7 +556,8 @@ bool qt_gl_preferGL2Engine(); inline GLenum qt_gl_preferredTextureFormat() { - return QSysInfo::ByteOrder == QSysInfo::BigEndian ? GL_RGBA : GL_BGRA; + return (QGLExtensions::glExtensions() & QGLExtensions::BGRATextureFormat) && QSysInfo::ByteOrder == QSysInfo::LittleEndian + ? GL_BGRA : GL_RGBA; } inline GLenum qt_gl_preferredTextureTarget() @@ -525,7 +565,7 @@ inline GLenum qt_gl_preferredTextureTarget() #if defined(QT_OPENGL_ES_2) return GL_TEXTURE_2D; #else - return (QGLExtensions::glExtensions & QGLExtensions::TextureRectangle) + return (QGLExtensions::glExtensions() & QGLExtensions::TextureRectangle) && !qt_gl_preferGL2Engine() ? GL_TEXTURE_RECTANGLE_NV : GL_TEXTURE_2D; @@ -596,6 +636,49 @@ private: friend class QGLContextGroup; }; + +// This class can be used to match GL extensions without doing any mallocs. The +// class assumes that the GL extension string ends with a space character, +// which it should do on all conformant platforms. Create the object and pass +// in a pointer to the extension string, then call match() on each extension +// that should be matched. The match() function takes the extension name +// *without* the terminating space character as input. + +class QGLExtensionMatcher +{ +public: + QGLExtensionMatcher(const char *str) + : gl_extensions(str), gl_extensions_length(qstrlen(str)) + {} + + bool match(const char *str) { + int str_length = qstrlen(str); + const char *extensions = gl_extensions; + int extensions_length = gl_extensions_length; + + while (1) { + // the total length that needs to be matched is the str_length + + // the space character that terminates the extension name + if (extensions_length < str_length + 1) + return false; + if (qstrncmp(extensions, str, str_length) == 0 && extensions[str_length] == ' ') + return true; + + int split_pos = 0; + while (split_pos < extensions_length && extensions[split_pos] != ' ') + ++split_pos; + ++split_pos; // added for the terminating space character + extensions += split_pos; + extensions_length -= split_pos; + } + return false; + } + +private: + const char *gl_extensions; + int gl_extensions_length; +}; + QT_END_NAMESPACE #endif // QGL_P_H |