//TriangleShaderVS
attribute vec3 a_posL;
attribute vec2 a_uv; 
varying vec2 v_uv;
uniform sampler2D u_s_texture;

void main()
{
v_uv = a_uv;
vec4 posL = vec4(a_posL, 1.0);
gl_Position = posL;

}