Some questions about packed project using OpenglES 2.0

Unity Engine
1

I create a project and create a simple model. If I packed it by opengles 1.x for android platform. It will run and display all normally. But If I packed it by opengles 2.0 for android platform, it can run,but cann’t display the model.
The follows is the error log:
V/Unity ( 376): GLES20: failed to compile fragment shader:
V/Unity ( 376): #define IN_HIGHP
V/Unity ( 376): #define IN_MEDIUMP
V/Unity ( 376): #define IN_LOWP
V/Unity ( 376): precision mediump float;
V/Unity ( 376):
V/Unity ( 376): #define SHADER_API_GLES 1
V/Unity ( 376): #define tex2D texture2D
V/Unity ( 376): varying highp vec2 xlv_TEXCOORD0;
V/Unity ( 376): varying lowp vec4 xlv_COLOR;
V/Unity ( 376): uniform sampler2D _HaloFalloff;
V/Unity ( 376): void main ()
V/Unity ( 376): {
V/Unity ( 376): lowp vec4 tmpvar_1;
V/Unity ( 376): mediump float a;
V/Unity ( 376): lowp float tmpvar_2;
V/Unity ( 376): tmpvar_2 = texture2D (_HaloFalloff, xlv_TEXCOORD0).w;
V/Unity ( 376): a = tmpvar_2;
V/Unity ( 376): mediump vec4 tmpvar_3;
V/Unity ( 376): tmpvar_3.xyz = (xlv_COLOR.xyz * a);
V/Unity ( 376): tmpvar_3.w = a;
V/Unity ( 376): tmpvar_1 = tmpvar_3;
V/Unity ( 376): gl_FragData[0] = tmpvar_1;
V/Unity ( 376): }

I have some questions:
I don’t program any shader codes, why have these shader codes?
How can I get these shader codes and change them in project?
And why my android platform cann’t compile fragment shader?
thanks very much!

2

Is there somebody help me?

3

Sounds like you put in an own shader, not one that came with unity so search for the corresponding *.shader file to remove it or fix it.

android can compile fragment shaders, if you target OpenGL ES 2.0 AND if the shader is compatible to it. if the shader is not, it will not work.