Wii: Fix aspect ratio (fixes #500)

CHANGES

@@ -36,6 +36,7 @@ Other fixes:
  - LR35902: Fix trailing whitespace in disassembly
  - Qt: Fix adjusting magnification in tile viewer when not fitting to window
  - FFmpeg: Improve initialization reliability and cleanup
+ - Wii: Fix aspect ratio (fixes mgba.io/i/500)
 Misc:
  - GBA Savedata: EEPROM performance fixes
  - GBA Savedata: Automatically map 1Mbit Flash files as 1Mbit Flash

src/platform/wii/main.c

@@ -102,7 +102,7 @@ static struct mRotationSource rotation;
 static GXRModeObj* vmode;
 static float wAdjust;
 static float hAdjust;
-static float wStretch = 1.0f;
+static float wStretch = 0.9f;
 static float hStretch = 0.9f;
 static float guiScale = GUI_SCALE;
 static Mtx model, view, modelview;
@@ -195,6 +195,9 @@ static void reconfigureScreen(struct mGUIRunner* runner) {
 		break;
 	}
 
+	vmode->viWidth = 704;
+	vmode->viXOrigin = 8;
+
 	VIDEO_SetBlack(true);
 	VIDEO_Configure(vmode);
 
@@ -319,7 +322,7 @@ int main(int argc, char* argv[]) {
 
 	struct mGUIRunner runner = {
 		.params = {
-			720, 480,
+			640, 480,
 			font, "",
 			_drawStart, _drawEnd,
 			_pollInput, _pollCursor,