--- a/src/gui/egl/qeglproperties.cpp Tue Jan 26 12:42:25 2010 +0200
+++ b/src/gui/egl/qeglproperties.cpp Tue Feb 02 00:43:10 2010 +0200
@@ -88,8 +88,12 @@
#if defined(EGL_ALPHA_MASK_SIZE)
case EGL_ALPHA_MASK_SIZE: return 0;
#endif
+#if defined(EGL_BIND_TO_TEXTURE_RGB)
case EGL_BIND_TO_TEXTURE_RGB: return EGL_DONT_CARE;
+#endif
+#if defined(EGL_BIND_TO_TEXTURE_RGBA)
case EGL_BIND_TO_TEXTURE_RGBA: return EGL_DONT_CARE;
+#endif
#if defined(EGL_COLOR_BUFFER_TYPE)
case EGL_COLOR_BUFFER_TYPE: return EGL_RGB_BUFFER;
#endif
@@ -225,6 +229,15 @@
// reductions in complexity are possible.
bool QEglProperties::reduceConfiguration()
{
+ // EGL chooses configs with the highest color depth over
+ // those with smaller (but faster) lower color depths. One
+ // way around this is to set EGL_BUFFER_SIZE to 16, which
+ // trumps the others. Of course, there may not be a 16-bit
+ // config avaliable, so it's the first restraint we remove.
+ if (value(EGL_BUFFER_SIZE) == 16) {
+ removeValue(EGL_BUFFER_SIZE);
+ return true;
+ }
if (removeValue(EGL_SAMPLE_BUFFERS)) {
removeValue(EGL_SAMPLES);
return true;