diff options
Diffstat (limited to 'src/gui/opengl/qopengl.cpp')
| -rw-r--r-- | src/gui/opengl/qopengl.cpp | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/src/gui/opengl/qopengl.cpp b/src/gui/opengl/qopengl.cpp index e961c42a25..2b1e57a4bb 100644 --- a/src/gui/opengl/qopengl.cpp +++ b/src/gui/opengl/qopengl.cpp @@ -60,6 +60,10 @@ QT_BEGIN_NAMESPACE typedef const GLubyte * (QOPENGLF_APIENTRYP qt_glGetStringi)(GLenum, GLuint); #endif +#ifndef GL_CONTEXT_LOST +#define GL_CONTEXT_LOST 0x0507 +#endif + QOpenGLExtensionMatcher::QOpenGLExtensionMatcher() { QOpenGLContext *ctx = QOpenGLContext::currentContext(); @@ -80,8 +84,13 @@ QOpenGLExtensionMatcher::QOpenGLExtensionMatcher() } else { #ifdef QT_OPENGL_3 // clear error state - while (funcs->glGetError()) {} - + while (true) { // Clear error state. + GLenum error = funcs->glGetError(); + if (error == GL_NO_ERROR) + break; + if (error == GL_CONTEXT_LOST) + return; + }; qt_glGetStringi glGetStringi = (qt_glGetStringi)ctx->getProcAddress("glGetStringi"); if (!glGetStringi) |