Replace OSystem::hasAlpha with a feature flag

svn-id: r17695

2 files changed, 1 insertions, 1 deletions

diff --git a/backends/dc/dc.h b/backends/dc/dc.h
index 42994c0012..3b7c0ae31f 100644
--- a/backends/dc/dc.h
+++ b/backends/dc/dc.h
@@ -133,7 +133,6 @@ class OSystem_Dreamcast : public OSystem {
   void clearOverlay();
   void grabOverlay(int16 *buf, int pitch);
   void copyRectToOverlay(const int16 *buf, int pitch, int x, int y, int w, int h);
-  bool hasAlpha() const { return true; }
   OverlayColor RGBToColor(uint8 r, uint8 g, uint8 b) { return ARGBToColor(255, r, g, b); }
   void colorToRGB(OverlayColor color, uint8 &r, uint8 &g, uint8 &b) {
     uint8 tmp; colorToARGB(color, tmp, r, g, b);
diff --git a/backends/dc/dcmain.cpp b/backends/dc/dcmain.cpp
index 69a00a19b3..2068e2f51e 100644
--- a/backends/dc/dcmain.cpp
+++ b/backends/dc/dcmain.cpp
@@ -151,6 +151,7 @@ bool OSystem_Dreamcast::hasFeature(Feature f)
   switch(f) {
   case kFeatureAspectRatioCorrection:
   case kFeatureVirtualKeyboard:
+  case kFeatureOverlaySupportsAlpha:
     return true;
   default:
     return false;