protot/shaders/lines/varying.def.sc

vec4 v_color0      : COLOR      = vec4(1.0, 0.0, 1.0, 1.0);

vec3  a_position   : POSITION;
vec3  a_texcoord0  : TEXCOORD0  = vec3(1.0, 0.0, 1.0);
vec3  a_texcoord1  : TEXCOORD1  = vec3(1.0, 0.0, 1.0);
float a_texcoord2  : TEXCOORD2  = 0.0;
vec4  a_color0     : COLOR0;