FreelyApps

function create_texture(gl, filename) {
    var texture = gl.createTexture();

    var pixel = new Uint8Array([0, 0, 255, 255]); //青.
    gl.bindTexture(gl.TEXTURE_2D, texture);
    gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixel); //1x1のテクスチャを生成する.
    gl.bindTexture(gl.TEXTURE_2D, null);

    var image = new Image();

FreelyApps

function create_texture(gl, filename) {
    var texture = gl.createTexture();

    var image = new Image();

    image.onload = function() {
        gl.bindTexture(gl.TEXTURE_2D, texture);
        gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, image);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
        gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_NEAREST);