blob shadow

Questions & Answers
1

Hiya All,

Looking at some of the dialogue here I feel I am such a noob :}

Okay, so I have a character with a blob shadow projector but the shadow is really dark. I would like a more subtle shadow but cannot see how to do that short of changing the material. Any thoughts??

Cheers

2

Change the color of the shadow. You have to alter the texture if you use the built-in shaders, I think, but you can use the textures that the built-in materials do, and have more flexibility, if you use your own shader.

Shader "Projector/Multiply (alpha cookie)" {

Properties {
	_Color ("Color", Color) = (1,1,1)
	_MainTex ("Cookie (Alpha)", 2D) = "" {TexGen ObjectLinear}
}

Category {
	Tags {"Queue"="Transparent-1"}
	Offset -1, -1
	ZWrite Off
	Fog {Color(1,1,1)}
	Blend Zero SrcColor
	
	Subshader {Pass {
		GLSLPROGRAM
		varying mediump vec2 uv;

		#ifdef VERTEX
		uniform mediump mat4 _Projector;
		void main() {
			gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
			mediump vec4 position_Projector = _Projector * gl_Vertex;
			uv = position_Projector.xy / position_Projector.w;
		}
		#endif
		
		#ifdef FRAGMENT
		uniform lowp sampler2D _MainTex;
		uniform lowp vec3 _Color;
		void main() {
			lowp float mainTex = texture2D(_MainTex, uv).a;
			gl_FragColor.rgb = _Color * (1. - mainTex) + mainTex;
		}
		#endif		
		ENDGLSL
	}}

	Subshader {Pass {
		SetTexture[_MainTex] {
			ConstantColor[_Color]	// .a has to be 1 to match GLSL
			Matrix[_Projector]
			Combine constant alpha Lerp(texture) constant
		}
	}}
}	

}