func setupTextures(gl *webgl.Context, program *js.Object) {
gl.ActiveTexture(gl.TEXTURE0)
gl.BindTexture(gl.TEXTURE_CUBE_MAP, gl.CreateTexture())
for i := 0; i < 6; i++ {
gl.Call("texImage2D", gl.TEXTURE_CUBE_MAP_POSITIVE_X+i, 0, gl.RGBA, imgCmResolution, imgCmResolution, 0, gl.RGBA, gl.UNSIGNED_BYTE, nil)
}
gl.TexParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
gl.TexParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
/*
gl.TexParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
gl.TexParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
*/
gl.TexParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
gl.TexParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
gl.Uniform1i(gl.GetUniformLocation(program, "s_texture"), 0)
}