SDL: Enable OpenGL by default

src/sdl/SDL.cpp

@@ -133,7 +133,7 @@ int sdlPrintUsage = 0;
 int cartridgeType = 3;
 int captureFormat = 0;
 
-int openGL = 0;
+int openGL = 1;
 int textureSize = 256;
 GLuint screenTexture = 0;
 u8 *filterPix = 0;

src/sdl/vbam.cfg-example

@@ -69,7 +69,7 @@ Motion_Down=0102
 
 # OpenGL mode:
 # 0 = don't use OpenGL, 1 = no texture filtering, 2 = bilinear filtering
-openGL=0
+openGL=1
 # when using OpenGL scaling and 'no filter' (called the 1x filter, number 0),
 # make the window this many times taller and wider:
 openGLscale=1