tex-3d-mipmap-levels-intel-bug.html

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Copyright (c) 2019 The Khronos Group Inc.

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<head>

<meta charset="utf-8">

<title>WebGL2 3D texture mipmap level conformance test.</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>

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<body>

<canvas id="example" width="2" height="2" style="width: 2px; height: 2px;"></canvas>

<div id="description"></div>

<div id="console"></div>

<script id="vshader_texsize" type="x-shader/x-vertex">#version 300 es

in vec4 vPosition;

void main()

    gl_Position = vPosition;

</script>

<script id="fshader_texsize_3d" type="x-shader/x-fragment">#version 300 es

precision mediump float;

uniform highp sampler3D tex;

uniform int lod;

uniform ivec3 texSize;

out vec4 fragColor;

void main()

    fragColor = (textureSize(tex, lod) == texSize ? vec4(255, 0, 0, 255) : vec4(0, 0, 0, 255));

</script>

<script>

"use strict";

description(document.title);

var wtu = WebGLTestUtils;

var gl = wtu.create3DContext("example", undefined, 2);

wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");

// This test fails on Intel Mesa, see crbug.com/666384.

(function() {

  debug("");

  debug("Test textureSize should work correctly with non-zero base level for texStorage3D");

  var program = wtu.setupProgram(

      gl, ['vshader_texsize', 'fshader_texsize_3d'], ['vPosition'], [0]);

  wtu.setupUnitQuad(gl, 0, 1);

  gl.uniform1i(gl.getUniformLocation(program, "tex"), 0);

  gl.uniform1i(gl.getUniformLocation(program, "lod"), 1);

  gl.uniform3i(gl.getUniformLocation(program, "texSize"), 8, 4, 2);

  var tex3d = gl.createTexture();

  gl.bindTexture(gl.TEXTURE_3D, tex3d);

  gl.texParameteri(gl.TEXTURE_3D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);

  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texParameter(TEXTURE_MAG_FILTER) should succeed");

  gl.texParameteri(gl.TEXTURE_3D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);

  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texParameter(TEXTURE_MIN_FILTER) should succeed");

  gl.texParameteri(gl.TEXTURE_3D, gl.TEXTURE_BASE_LEVEL, 1);

  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texParameter(TEXTURE_BASE_LEVEL) should succeed");

  gl.texStorage3D(gl.TEXTURE_3D, 4, gl.RGBA8, 32, 16, 8);

  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texStorage3D should succeed");

  wtu.clearAndDrawUnitQuad(gl);

  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "clearAndDrawQuad should succeed");

  wtu.checkCanvas(gl, [255, 0, 0, 255], "should draw with [255, 0, 0, 255]");

  gl.deleteTexture(tex3d);

})();

var successfullyParsed = true;

</script>

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

</body>

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