From a9cf61759dc243c4051467d7223138e04b56c7dc Mon Sep 17 00:00:00 2001
From: Patrick Meehan <patrick@ziplinegames.com>
Date: Sat, 1 Dec 2018 23:18:08 -0800
Subject: [PATCH] exposed MOAIDraw::Bind () to lua; updated audio-meter sample
 to not crash on render

---
 samples/audio-meter/main.lua |  8 +++++---
 src/moai-sim/MOAIDraw.cpp    | 10 ++++++++++
 src/moai-sim/MOAIDraw.h      |  1 +
 3 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/samples/audio-meter/main.lua b/samples/audio-meter/main.lua
index 5b2dd15691..7e955052d0 100644
--- a/samples/audio-meter/main.lua
+++ b/samples/audio-meter/main.lua
@@ -15,7 +15,7 @@ viewport = MOAIViewport.new ()
 viewport:setSize ( 1024, 512 )
 viewport:setScale ( 1024, 512 )
 
-layer = MOAIPartitionViewLayer.new ()
+layer = MOAITableViewLayer.new ()
 layer:setViewport ( viewport )
 layer:setClearColor ( 1, 1, 1, 1 )
 layer:pushRenderPass ()
@@ -86,6 +86,8 @@ elapsedFrames = 0
 
 onDraw = function ()
 
+    MOAIDraw.bind ()
+
 	meter:seek ( 0 )
 
 	local span = 1024 / bands
@@ -95,9 +97,9 @@ onDraw = function ()
 		local x = (( i - 1 ) * span ) - ( 1024 / 2 )
 		local y = ( meter:readFloat () * 64 ) - 256
 
-		MOAIGfxMgr.setPenColor ( 1, 0, 0, 1 )
+		MOAIDraw.setPenColor ( 1, 0, 0, 1 )
 		MOAIDraw.fillRect ( x, y, x + span, -256 )
 	end
 end
 
-layer:setOverlayTable ({ onDraw })
+layer:setRenderTable ({ onDraw })
diff --git a/src/moai-sim/MOAIDraw.cpp b/src/moai-sim/MOAIDraw.cpp
index cdf5001427..c44e49bf1d 100644
--- a/src/moai-sim/MOAIDraw.cpp
+++ b/src/moai-sim/MOAIDraw.cpp
@@ -293,6 +293,15 @@ void MOAIDraw::EndDrawString () {
 // lua
 //================================================================//
 
+//----------------------------------------------------------------//
+// TODO: doxygen
+int MOAIDraw::_bind ( lua_State* L ) {
+	MOAI_LUA_SETUP_SINGLE ( MOAIDraw, "" )
+	
+	self->Bind ();
+	return 0;
+}
+
 //----------------------------------------------------------------//
 // TODO: doxygen
 int MOAIDraw::_bindFrameBuffer ( lua_State* L ) {
@@ -1546,6 +1555,7 @@ void MOAIDraw::RegisterLuaClass ( MOAILuaState& state ) {
 	state.SetField ( -1, "WORLD_MATRIX",				( u32 )MOAIGfxState::MODEL_TO_WORLD_MTX );
 
 	luaL_Reg regTable [] = {
+		{ "bind",					_bind },
 		{ "bindFrameBuffer",		_bindFrameBuffer },
 		{ "bindIndexBuffer",		_bindIndexBuffer },
 		{ "bindShader",				_bindShader },
diff --git a/src/moai-sim/MOAIDraw.h b/src/moai-sim/MOAIDraw.h
index caf783fd3d..9f1bb45bc0 100644
--- a/src/moai-sim/MOAIDraw.h
+++ b/src/moai-sim/MOAIDraw.h
@@ -27,6 +27,7 @@ class MOAIDraw :
 private:
 
 	//----------------------------------------------------------------//
+	static int			_bind					( lua_State* L );
 	static int			_bindFrameBuffer		( lua_State* L );
 	static int			_bindIndexBuffer		( lua_State* L );
 	static int			_bindShader				( lua_State* L );