From b5249e1957e378ba5b29df29c2c5bee1419dd8d2 Mon Sep 17 00:00:00 2001
From: Firew0lf <Firew0lf@users.noreply.github.com>
Date: Wed, 19 Aug 2015 01:46:04 +0200
Subject: [PATCH] Improved the gfx.startFrame() function to select a screen,
 Fixed some values now defined with the C ones

---
 sdcard/ctruLua/main.lua |  2 +-
 source/gfx.c            | 21 ++++++++++++---------
 2 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/sdcard/ctruLua/main.lua b/sdcard/ctruLua/main.lua
index 29147b4..fb17f6e 100644
--- a/sdcard/ctruLua/main.lua
+++ b/sdcard/ctruLua/main.lua
@@ -18,7 +18,7 @@ while os.run() do
 	if keys.held.up then y = y - 1 end
 	if keys.held.down then y = y + 1 end
 
-	gfx.startFrame()
+	gfx.startFrame(gfx.GFX_TOP)
 	
 		gfx.color.setDefault(0xFF0000FF)
 		gfx.rectangle(x, y, 10, 10, angle)
diff --git a/source/gfx.c b/source/gfx.c
index 8ef974f..9ad83bc 100644
--- a/source/gfx.c
+++ b/source/gfx.c
@@ -8,7 +8,10 @@ int load_color_lib(lua_State *L);
 u32 color_default;
 
 static int gfx_startFrame(lua_State *L) {
-	sf2d_start_frame(GFX_TOP, GFX_LEFT);
+	u8 screen = luaL_checkinteger(L, 1);
+	u8 eye = luaL_optinteger(L, 2, GFX_LEFT);
+	
+	sf2d_start_frame(screen, eye);
 
 	return 0;
 }
@@ -91,14 +94,14 @@ static const struct luaL_Reg gfx_lib[] = {
 
 // constants
 struct { char *name; int value; } gfx_constants[] = {
-	{ "GFX_TOP",       0   },
-	{ "GFX_BOTTOM",    1   },
-	{ "GFX_LEFT",      0   },
-	{ "GFX_RIGHT",     1   },
-	{ "TOP_HEIGHT",    240 },
-	{ "TOP_WIDTH",     400 },
-	{ "BOTTOM_HEIGHT", 240 },
-	{ "BOTTOM_WIDTH",  320 },
+	{ "GFX_TOP",       GFX_TOP    },
+	{ "GFX_BOTTOM",    GFX_BOTTOM },
+	{ "GFX_LEFT",      GFX_LEFT   },
+	{ "GFX_RIGHT",     GFX_RIGHT  },
+	{ "TOP_HEIGHT",    240        },
+	{ "TOP_WIDTH",     400        },
+	{ "BOTTOM_HEIGHT", 240        },
+	{ "BOTTOM_WIDTH",  320        },
 	{ NULL, 0 }
 };