#version 300 es
precision highp float;   // highp: fullscreen UV addressing (mediump fp16 is not enough on mobile)

in vec2 vTexCoord;
uniform mediump sampler2D u_tex;     // scene
uniform mediump sampler2D u_bloom;
uniform float u_intensity;
out vec4 fragColor;

void main() {
    vec3 scene = texture(u_tex, vTexCoord).rgb;
    vec3 bloom = texture(u_bloom, vTexCoord).rgb;
    fragColor = vec4(scene + bloom * u_intensity, 1.0);
}