iOS5 GLSL Shader Problem

Unity Engine
1

My shader is not working anymore on iOS 5 Device (iPhone 4 iOS5.0) - it still works fine on iOS 4.x

Are GLSL Shaders not supported anymore by iOS 5.0 ?

Here is my shader code:

Shader "Water" 
{

	Properties {
		_MainTex ("Texture 1", 2D) = "black" {}
		_Color ("Color", Color) = (1,1,1,1)
		_Color2 ("Color", Color) = (1,1,1,1)
		_SphereTex ("Environment Sphere", 2D) = "black" {}
		
	}
	
	SubShader 
	{
		Tags {
			"RenderType"="Opaque" 
			"Queue"="Transparent-1"
			}
		Cull Back
		
		//AlphaTest Greater 0 
		
		 
		
		zwrite On
		
		Pass 
		{ 
			Name "UNLIT2"
			GLSLPROGRAM
			
			varying mediump vec4 uv;
		 
			varying mediump vec3 normalDirection;
			varying mediump vec3 viewDirection;
			varying mediump vec3 reflectedDirection;
			
		
			#ifdef VERTEX
			uniform mediump vec4 _MainTex_ST;	
			uniform mediump vec4 _MainTex2_ST;	
			uniform mediump vec4 _MyOffsets;			
			uniform mediump vec3 _WorldSpaceCameraPos; // camera position in world space
			uniform mediump mat4 _Object2World; // model matrix
			uniform mediump mat4 _World2Object; // inverse model matrix
			
			void main()
			{       
				gl_Position = gl_ModelViewProjectionMatrix * (gl_Vertex - vec4(0.0, 0.0, 0.0, 0.0));

				uv.xy = gl_MultiTexCoord0.xy * _MainTex_ST.xy + _MainTex_ST.zw + _MyOffsets.xy;
				uv.z += 0.5;
				uv.zw = gl_MultiTexCoord0.xy * _MainTex_ST.xy + _MainTex_ST.zw + _MyOffsets.zw; 
				
				normalDirection = normalize(vec3(vec4(gl_Normal, 0.0) * _World2Object));
				viewDirection = vec3(_Object2World * gl_Vertex - vec4(_WorldSpaceCameraPos, 1.0));		
				 
				reflectedDirection = (normalize(reflect(viewDirection, normalize(normalDirection)))*0.5-0.5) * 0.5 -0.25; 
				
			} 
			
			#endif 
			  
			
			#ifdef FRAGMENT
			
			uniform mediump sampler2D _MainTex;
		 
			uniform mediump sampler2D _SphereTex;
		 
			
			uniform lowp vec4 _Color;
			uniform lowp vec4 _Color2;
			void main()
			{
				mediump float t =  uv.x *1.0 - 0.5;					 
				t*= t * _Color.a;
			 
				mediump vec4 texCol1 = texture2DLod(_MainTex, uv.xy, 0.0);
			 
				texCol1 = texCol1/2.0 + texture2DLod(_MainTex, uv.zw, 0.0)/2.0;
			 
				
			 
				mediump vec4 texCol3 = texture2DLod(_SphereTex, reflectedDirection.xy + texCol1.xy * 0.125, 0.0);
				 
				
				texCol3 = texCol3 * (1.0 - _Color2.a) + _Color2.a * _Color2;
		
				
				gl_FragColor =  texCol3* (1.0 - t) + (t) * _Color;		
			}
			
			#endif
			
			ENDGLSL
		}
	}
}

Can anyone help me out please? The submission should be next week - so I am a bit afraid !:face_with_spiral_eyes:

2

Try enabling 32 bit for ios5 in build options.

3

It cames out that texture2DLod is not supported any more on iOS 5.0

have not tried the 32 Bit mode thing, but will do soon. Thank you!

4

As expected, 32 Bit Buffer does not enable “lod” functions… well no suprise… but anyway it may fix other iOS5.0 issues, thank you anyway. :slight_smile:

5

I read there were a few ios5 issues solved by going 32 bit, sadly thats not one of them.