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desktop-main.cpp: add verbose output to validateGL()

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Amend validateGL() with verbose output.
Also use QDebug instead of fprintf().

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
This commit is contained in:
Lubomir I. Ivanov 2017-10-29 21:11:05 +02:00 committed by Dirk Hohndel
parent c88b59392b
commit 182992fad5
1 changed files with 15 additions and 7 deletions
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22
subsurface-desktop-main.cpp
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@ -51,8 +51,6 @@ int main(int argc, char **argv)
subsurface_console_init(dedicated_console, false);
}
validateGL();
const char *default_directory = system_default_directory();
const char *default_filename = system_default_filename();
subsurface_mkdir(default_directory);
@ -77,6 +75,7 @@ int main(int argc, char **argv)
printf("If you insist to do so, run with option --allow_run_as_root.\n");
exit(0);
}
validateGL();
#if !LIBGIT2_VER_MAJOR && LIBGIT2_VER_MINOR < 22
git_threads_init();
#else
@ -137,6 +136,8 @@ bool haveFilesOnCommandLine()
return filesOnCommandLine;
}
#define VALIDATE_GL_PREFIX "validateGL(): "
void validateGL()
{
GLint verMajor, verMinor;
@ -151,30 +152,37 @@ void validateGL()
glError = "Cannot create OpenGL context";
goto exit;
}
if (verbose)
qDebug() << QStringLiteral(VALIDATE_GL_PREFIX "created OpenGLContext.").toUtf8().data();
ctx.makeCurrent(&surface);
func = ctx.functions();
if (!func) {
glError = "Cannot obtain QOpenGLFunctions";
goto exit;
}
if (verbose)
qDebug() << QStringLiteral(VALIDATE_GL_PREFIX "obtained QOpenGLFunctions.").toUtf8().data();
func->glGetIntegerv(GL_MAJOR_VERSION, &verMajor);
func->glGetIntegerv(GL_MINOR_VERSION, &verMinor);
if (verMajor * 10 + verMinor < 21) // set 2.1 as the minimal version
if (verbose)
qDebug() << QStringLiteral(VALIDATE_GL_PREFIX "detected OpenGL version %1.%2.").arg(verMajor).arg(verMinor).toUtf8().data();
if (verMajor * 10 + verMinor < 21) { // set 2.1 as the minimal version
glError = "OpenGL 2.1 or later is required";
goto exit;
}
exit:
ctx.makeCurrent(NULL);
surface.destroy();
if (glError) {
#if QT_VERSION < QT_VERSION_CHECK(5, 8, 0)
fprintf(stderr, "ERROR: %s.\n"
qWarning() << QStringLiteral(VALIDATE_GL_PREFIX "ERROR: %1.\n"
"Cannot automatically fallback to a software renderer!\n"
"Set the environment variable 'QT_QUICK_BACKEND' with the value of 'software'\n"
"before running Subsurface!\n",
glError);
"before running Subsurface!").arg(glError).toUtf8().data();
exit(0);
#else
fprintf(stderr, "WARNING: %s. Using a software renderer!\n", glError);
qWarning() << QStringLiteral(VALIDATE_GL_PREFIX "WARNING: %1. Using a software renderer!").arg(glError).toUtf8().data();
QQuickWindow::setSceneGraphBackend(QSGRendererInterface::Software);
#endif
}