Repeat texture in mirror mode

Is it possible to set your uv tiling on mirror repeat? I do know that OpenGL supports it and DirectX does so too.

So, instead of just repeating the texture, the texture needs to be flipped instead of just repeated.

http://www.opengl.org/registry/specs/ARB/texture_mirrored_repeat.txt

mirror repeated texture

No it is not possible to change the UV to mirror mode. However if your UVs is set to repeat, you can easily achieve the same effect by writing a custom shader.

I have implemented a simple diffuse shader that does the trick:

Shader "Custom/DiffuseUVMirrowShader" {
Properties {
	_Color ("Main Color", Color) = (1,1,1,1)
	_MainTex ("Base (RGB)", 2D) = "white" {}
}
SubShader {
	Tags { "RenderType"="Opaque" }
	LOD 200

CGPROGRAM
#pragma surface surf Lambert

sampler2D _MainTex;
float4 _Color;

struct Input {
	float2 uv_MainTex;
};

void surf (Input IN, inout SurfaceOutput o) {
	float2 t = frac(IN.uv_MainTex*0.5)*2.0;
	float2 length = {1.0,1.0};
	float2 mirrorTexCoords = length-abs(t-length);
	half4 c = tex2D(_MainTex,  mirrorTexCoords) * _Color;
	o.Albedo = c.rgb;
	o.Alpha = c.a;
}
ENDCG
}

Fallback "VertexLit"
}