lerp textures iOS 6

Unity Engine
1

Hi,

I would like to lerp textures in a shader depending on the world position. My shader works so far in the editor and on iOS 5.1.1 but on iOS 6 the bottom texture (_SecondTex) is not visible.

@edit the second texture is not ‘not visible’, it’s just black.

Shader "Custom/TestShader" {
	Properties {
		_MainTex("Top", 2D) = "white" {}
		_SecondTex("Bottom", 2D) = "white" {}
	}
	SubShader {
		Tags { "RenderType"="Opaque" }
		LOD 200
		
		CGPROGRAM
		#pragma surface surf Lambert
		
		sampler2D _MainTex;
		sampler2D _SecondTex;

		struct Input {
			float2 uv_MainTex;
			float2 uv_SecondTex;
			float3 worldPos;
		};

		void surf (Input IN, inout SurfaceOutput o) {
		
			float4 Tex2D0 = tex2D(_MainTex, IN.uv_MainTex);
			float4 Tex2D1 = tex2D(_SecondTex, IN.uv_SecondTex);
			
			float4 Lerp0 = lerp(Tex2D1, Tex2D0, clamp(IN.worldPos.y * 10, 0, 1));
		
			o.Albedo = Lerp0.rgb;
			o.Alpha = Lerp0.a;
		}
		ENDCG
	} 
	FallBack "Diffuse"
}

Did I do something wrong or is there an issue on iOS6?

I also tried to use ShaderLab but don’t know how to get the world position then.

2

I just figured out that this only happens when the player setting ‘orientation’ is set to landscape. When portrait mode is set, it also works on ios6.

Bug report sent

3

I would recommend, as you already started forum thread, to post case number along - this way if stuff catches attention of some dev (me in that case) he can check it right away without qa in the middle.

4

Okay, it’s case 533786

5

hm, it works for me (though i’m using dev version sure - something like 4.2)
i can see what you mean if i simply run your project, though it was build with 4.0. Did you try 4.1?

6

You’re right, it works with Unity 4.1. Thank you very much for your support!