Add QEgl::defaultConfig method to select configs suitable for Qt

Reviewed-By: TrustMe

1 files changed, 15 insertions, 0 deletions

diff --git a/src/gui/egl/qegl_p.h b/src/gui/egl/qegl_p.h
index 8a9d815..1a5e4c0 100644
--- a/src/gui/egl/qegl_p.h
+++ b/src/gui/egl/qegl_p.h
@@ -114,6 +114,21 @@ namespace QEgl {
         BestPixelFormat
     };
 
+    enum ConfigOptions
+    {
+        Opaque      = 0x00,
+        Translucent = 0x01,
+
+        ReadOnly    = 0x00,
+        Renderable  = 0x02  // Config will be compatable with the paint engines (VG or GL)
+    };
+
+    // Most of the time we use the same config for things like widgets & pixmaps, so rather than
+    // go through the eglChooseConfig loop every time, we use defaultConfig, which will return
+    // the config for a particular device/api/option combo. This function assumes that once a
+    // config is chosen for a particular combo, it's safe to always use that combo.
+    Q_GUI_EXPORT EGLConfig  defaultConfig(QPaintDevice* device, API api, ConfigOptions options);
+
     Q_GUI_EXPORT EGLConfig  chooseConfig(const QEglProperties* configAttribs, QEgl::PixelFormatMatch match = QEgl::ExactPixelFormat);
     Q_GUI_EXPORT EGLSurface createSurface(QPaintDevice *device, EGLConfig cfg, const QEglProperties *surfaceAttribs = 0);