r/x-fragment">
        #version 300 es
        precision highp float;
        precision highp int;
        precision highp usampler2D;

        uniform usampler2D diffuse;

        in vec2 v_st;

        out vec4 color;

        void main()
        {
            ivec2 size = textureSize(diffuse, 0);
            vec2 texcoord = v_st * vec2(size);
            ivec2 coord = ivec2(texcoord);
            uvec4 texel = uvec4(texelFetch(diffuse, coord, 0));

            color = vec4(texel) / 255.0;
        }
    <