Avoid querying unknown RESET_NOTIFICATION_STRATEGY value on GL < 4.0

Fixes: QTBUG-55759
Change-Id: Ie2758859a6862a214691a5011761bf549a31a93e
Reviewed-by: Christian Strømme <christian.stromme@qt.io>
This commit is contained in:
Laszlo Agocs 2018-11-05 15:57:22 +01:00
parent 3d56572fe7
commit 1be4f6c32c
2 changed files with 14 additions and 9 deletions

View File

@ -876,10 +876,6 @@ QWindowsOpenGLContextFormat QWindowsOpenGLContextFormat::current()
result.options |= QSurfaceFormat::DeprecatedFunctions;
if (value & GL_CONTEXT_FLAG_DEBUG_BIT)
result.options |= QSurfaceFormat::DebugContext;
value = 0;
QOpenGLStaticContext::opengl32.glGetIntegerv(RESET_NOTIFICATION_STRATEGY_ARB, &value);
if (value == LOSE_CONTEXT_ON_RESET_ARB)
result.options |= QSurfaceFormat::ResetNotification;
if (result.version < 0x0302)
return result;
// v3.2 onwards: Profiles
@ -889,6 +885,13 @@ QWindowsOpenGLContextFormat QWindowsOpenGLContextFormat::current()
result.profile = QSurfaceFormat::CoreProfile;
else if (value & GL_CONTEXT_COMPATIBILITY_PROFILE_BIT)
result.profile = QSurfaceFormat::CompatibilityProfile;
if (result.version < 0x0400)
return result;
// v4.0 onwards
value = 0;
QOpenGLStaticContext::opengl32.glGetIntegerv(RESET_NOTIFICATION_STRATEGY_ARB, &value);
if (value == LOSE_CONTEXT_ON_RESET_ARB)
result.options |= QSurfaceFormat::ResetNotification;
return result;
}

View File

@ -163,10 +163,12 @@ static void updateFormatFromContext(QSurfaceFormat &format)
format.setOption(QSurfaceFormat::StereoBuffers);
if (format.renderableType() == QSurfaceFormat::OpenGL) {
GLint value = 0;
glGetIntegerv(GL_RESET_NOTIFICATION_STRATEGY_ARB, &value);
if (value == GL_LOSE_CONTEXT_ON_RESET_ARB)
format.setOption(QSurfaceFormat::ResetNotification);
if (format.version() >= qMakePair(4, 0)) {
GLint value = 0;
glGetIntegerv(GL_RESET_NOTIFICATION_STRATEGY_ARB, &value);
if (value == GL_LOSE_CONTEXT_ON_RESET_ARB)
format.setOption(QSurfaceFormat::ResetNotification);
}
if (format.version() < qMakePair(3, 0)) {
format.setOption(QSurfaceFormat::DeprecatedFunctions);
@ -175,7 +177,7 @@ static void updateFormatFromContext(QSurfaceFormat &format)
// Version 3.0 onwards - check if it includes deprecated functionality or is
// a debug context
value = 0;
GLint value = 0;
glGetIntegerv(GL_CONTEXT_FLAGS, &value);
if (!(value & GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT))
format.setOption(QSurfaceFormat::DeprecatedFunctions);