Getting Xray shader working on iPhone (431789)

Unity Engine
,
1

Hi I was wondering if anyone could help me solve my problem getting the XRay shader to work on iOS. Here’s the code for it.

http://www.unifycommunity.com/wiki/index.php?title=XRay

When I run it in Emulation OpenGL ES2.0 mode inside Unity, it renders fine, but turns purple on the Phone itself or in emulation OpenGL ES1.1 mode.

458012--16030--$Screen shot 2010-12-22 at 3.08.41 PM.png
458012--16030--$Screen shot 2010-12-22 at 3.08.41 PM.png550×385 21.5 KB

My phone is a 3GS and it’s compiling in ARM7 mode. #define USE_OPENGLES20_IF_AVAILABLE 1

Is there any reason this Shader shouldn’t work? If so, is there any alternative?

Thanks!

2

Is there any way to make sure I’m running ES 2.0?

3

Yeah, choose ES 2.0 in your player settings

4

Did you ever find a solution to this?

5

To answer my own question this is what I came up with

Shader "My Shaders/XRay" {
    Properties {
        _Color ("Tint (RGB)", Color) = (1,1,1,1)
        _RampTex ("Facing Ratio Ramp (RGB)", 2D) = "white" {}
    }
SubShader {
    	Cull Off //turn this on if using Blend One One
        ZWrite Off
        Tags { "RenderType"="Opaque" "Queue" = "Transparent" "VisibleInDepth"="On" }
        //Blend One One
        Blend One OneMinusSrcColor
        Pass {

			CGPROGRAM
			#pragma vertex vert
			#pragma fragment frag
			
			#include "UnityCG.cginc"
			
			float4 _Color;
			sampler2D _RampTex;
			
			struct v2f {
			    float4  pos : SV_POSITION;
			    float2  uv : TEXCOORD0;
			};
			
			float4 _RampTex_ST;

           v2f vert (appdata_base v) {
                v2f o;
                o.pos = mul (UNITY_MATRIX_MVP, v.vertex);
                float3 viewDir = normalize(ObjSpaceViewDir(v.vertex));
                o.uv = float4( abs(dot(viewDir,v.normal)), 0.5, 0.0, 1.0 );
                return o;
            }


			half4 frag (v2f i) : COLOR
			{
			    half4 texcol = tex2D (_RampTex, i.uv);
			    return texcol * _Color;
			}
			ENDCG

    }
}
Fallback "VertexLit"
}

Basically replace the setTexture line with a frag