mipmap-fbo.html - mozsearch

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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.

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<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8">

<title>Test if mipmap incomplete textures can 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", undefined, 2);

var testIncompleteMipmapInFBO = function () {

    // Create a texture that's not mipmap complete.

    var texture = gl.createTexture();

    gl.bindTexture(gl.TEXTURE_2D, texture);

    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);

    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_LINEAR);

    gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 32, 32, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);

    // Framebuffer should be incomplete for incomplete texture.

    var fbo = gl.createFramebuffer();

    gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);

    gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 1);

    shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT");

testIncompleteMipmapInFBO();

var successfullyParsed = true;

</script>

<script src="../../../js/js-test-post.js"></script>

</body>

</html>