qeglpbuffer.cpp

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33 -

34 #include <QtGui/QOffscreenSurface> -

35 #include "qeglpbuffer_p.h" -

36 #include "qeglconvenience_p.h" -

37 -

38 QT_BEGIN_NAMESPACE -

39 -

40 /*! -

41 \class QEGLPbuffer -

42 \brief A pbuffer-based implementation of QPlatformOffscreenSurface for EGL. -

43 \since 5.2 -

44 \internal -

45 \ingroup qpa -

46 -

47 To use this implementation in the platform plugin simply -

48 reimplement QPlatformIntegration::createPlatformOffscreenSurface() -

49 and return a new instance of this class. -

50 */ -

51 -

52 QEGLPbuffer::QEGLPbuffer(EGLDisplay display, const QSurfaceFormat &format, QOffscreenSurface *offscreenSurface, -

53 QEGLPlatformContext::Flags flags) -

54 : QPlatformOffscreenSurface(offscreenSurface) -

55 , m_format(format) -

56 , m_display(display) -

57 , m_pbuffer(EGL_NO_SURFACE) -

58 { -

bool hasSurfaceless = !flags.testFlag(QEGLPlatformContext::NoSurfaceless)

!flags.testFla...NoSurfaceless)	Description
TRUE	never evaluated
FALSE	never evaluated

&& q_hasEglExtension(display, "EGL_KHR_surfaceless_context");

q_hasEglExtens...less_context")	Description
TRUE	never evaluated
FALSE	never evaluated

61 -

62 // Disable surfaceless contexts on Mesa for now. As of 10.6.0 and Intel at least, some -

63 // operations (glReadPixels) are unable to work without a surface since they at some -

64 // point temporarily unbind the current FBO and then later blow up in some seemingly -

65 // safe operations, like setting the viewport, that apparently need access to the -

66 // read/draw surface in the Intel backend. -

67 const char *vendor = eglQueryString(display, EGL_VENDOR); // hard to check for GL_ strings here, so blacklist all Mesa -

if (vendor && strstr(vendor, "Mesa"))

vendor	Description
TRUE	never evaluated
FALSE	never evaluated

strstr(vendor, "Mesa")	Description
TRUE	never evaluated
FALSE	never evaluated

hasSurfaceless = false;

never executed: hasSurfaceless = false;

70 -

if (hasSurfaceless)

hasSurfaceless	Description
TRUE	never evaluated
FALSE	never evaluated

return;

never executed: return;

73 -

74 EGLConfig config = q_configFromGLFormat(m_display, m_format, false, EGL_PBUFFER_BIT); -

75 -

if (config) {

config	Description
TRUE	never evaluated
FALSE	never evaluated

77 const EGLint attributes[] = { -

78 EGL_WIDTH, offscreenSurface->size().width(), -

79 EGL_HEIGHT, offscreenSurface->size().height(), -

80 EGL_LARGEST_PBUFFER, EGL_FALSE, -

81 EGL_NONE -

82 }; -

83 -

84 m_pbuffer = eglCreatePbufferSurface(m_display, config, attributes); -

85 -

if (m_pbuffer != EGL_NO_SURFACE)

m_pbuffer != ((EGLSurface)0)	Description
TRUE	never evaluated
FALSE	never evaluated

m_format = q_glFormatFromConfig(m_display, config);

never executed: m_format = q_glFormatFromConfig(m_display, config);

}

never executed: end of block

}

never executed: end of block

90 -

91 QEGLPbuffer::~QEGLPbuffer() -

92 { -

if (m_pbuffer != EGL_NO_SURFACE)

m_pbuffer != ((EGLSurface)0)	Description
TRUE	never evaluated
FALSE	never evaluated

eglDestroySurface(m_display, m_pbuffer);

never executed: eglDestroySurface(m_display, m_pbuffer);

}

never executed: end of block

96 -

97 QT_END_NAMESPACE -

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