<!--
Copyright (c) 2019 The Khronos Group Inc.
Use of this source code is governed by an MIT-style license that can be
found in the LICENSE.txt file.
-->

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Test that cube incomplete textures can not be used as FBO attachments</title>
<link rel="stylesheet" href="../../../resources/js-test-style.css"/>
<script src="../../../js/js-test-pre.js"></script>
<script src="../../../js/webgl-test-utils.js"></script>
</head>
<body>
<canvas id="example" width="24" height="24"></canvas>
<div id="description"></div>
<div id="console"></div>
<script>
"use strict";

var wtu = WebGLTestUtils;
description();

var gl = wtu.create3DContext("example");

var testIncompleteCubemapFaceInFBO = function() {
    // Create a cube map texture that's not cube complete.
    var tex2 = gl.createTexture();
    gl.bindTexture(gl.TEXTURE_CUBE_MAP, tex2);
    gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
    gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MIN_FILTER, gl.NEAREST);

    var cube_map_faces = [
        gl.TEXTURE_CUBE_MAP_POSITIVE_X,
        gl.TEXTURE_CUBE_MAP_NEGATIVE_X,
        gl.TEXTURE_CUBE_MAP_POSITIVE_Y,
        gl.TEXTURE_CUBE_MAP_NEGATIVE_Y,
        gl.TEXTURE_CUBE_MAP_POSITIVE_Z,
        gl.TEXTURE_CUBE_MAP_NEGATIVE_Z
    ];
    // Fill in all but 1 cube map face
    for (var i = 0; i < cube_map_faces.length - 1; ++i) {
        gl.texImage2D(cube_map_faces[i], 0, gl.RGBA, 32, 32, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
    }

    var fb2 = gl.createFramebuffer();
    gl.bindFramebuffer(gl.FRAMEBUFFER, fb2);
    gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_CUBE_MAP_POSITIVE_X, tex2, 0);
    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors after attaching cube map face.");
    debug("Cubemap has 1 missing face, so framebuffer should not be complete.");
    shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT");

    debug("");

    // Fill in missing cube map face
    gl.texImage2D(cube_map_faces[5], 0, gl.RGBA, 32, 32, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
    debug("Missing face is added, so framebuffer should become complete.");
    shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE");
}

testIncompleteCubemapFaceInFBO();

var successfullyParsed = true;
finishTest();

</script>

</body>
</html>

