#version 300 es
precision mediump float;
uniform sampler2D s_texture;
uniform int u_texture_env_mode;
in vec4 v_color;
in vec2 v_texcoord;
out vec4 o_fragColor;
void main()
{
    const int texture_env_mode_replace = 0x1E01;
    const int texture_env_mode_modulate = 0x2100;
    if (u_texture_env_mode==texture_env_mode_replace)
     o_fragColor = texture( s_texture, v_texcoord).aaaa;
   if (u_texture_env_mode==texture_env_mode_modulate){
//		       o_fragColor = texture( s_texture, v_texcoord).aaaa*v_color;
       o_fragColor = vec4(1, 1, 1, texture( s_texture, v_texcoord).a)*v_color;
   }
//		       o_fragColor = v_color;
}