Add support for querying "eglconfig" from eglfs

This makes it possible to retrieve the EGLConfig used by Qt to
create the QOpenGLContext. QtWebEngine needs this to be able to
get rid of EGL_BAD_MATCH errors on certain hardware by using the
exact same EGLConfig in Chromium as used by Qt.

Change-Id: I049c0d8637c44acfe160230e4bb81364d66413ab
Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/platformsupport/eglconvenience/qeglplatformintegration.cpp b/src/platformsupport/eglconvenience/qeglplatformintegration.cpp
index 560ff79ef8..4e4860db9a 100644
--- a/src/platformsupport/eglconvenience/qeglplatformintegration.cpp
+++ b/src/platformsupport/eglconvenience/qeglplatformintegration.cpp
@@ -195,6 +195,7 @@ enum ResourceType {
     EglDisplay,
     EglWindow,
     EglContext,
+    EglConfig,
     NativeDisplay,
     Display
 };
@@ -205,6 +206,7 @@ static int resourceType(const QByteArray &key)
         QByteArrayLiteral("egldisplay"),
         QByteArrayLiteral("eglwindow"),
         QByteArrayLiteral("eglcontext"),
+        QByteArrayLiteral("eglconfig"),
         QByteArrayLiteral("nativedisplay"),
         QByteArrayLiteral("display")
     };
@@ -281,6 +283,10 @@ void *QEGLPlatformIntegration::nativeResourceForContext(const QByteArray &resour
         if (context->handle())
             result = static_cast<QEGLPlatformContext *>(context->handle())->eglContext();
         break;
+    case EglConfig:
+        if (context->handle())
+            result = static_cast<QEGLPlatformContext *>(context->handle())->eglConfig();
+        break;
     default:
         break;
     }