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#ifdef GL_ES
precision highp float;
#endif
/* Outputs to the fragment shader */
varying vec4 frag_color;
varying vec2 tex_coord0;
/* vertex attributes */
attribute vec2 vPosition;
attribute vec2 vTexCoords0;
/* uniform variables */
uniform mat4 modelview_mat;
uniform mat4 projection_mat;
uniform vec4 color;
uniform float opacity;