LayoutTests/webgl/1.0.3/resources/webgl_test_files/conformance/textures/texture-npot.html - WebKit - Git at Google

 <!--

 /*
 ** Copyright (c) 2012 The Khronos Group Inc.
 **
 ** Permission is hereby granted, free of charge, to any person obtaining a
 ** copy of this software and/or associated documentation files (the
 ** "Materials"), to deal in the Materials without restriction, including
 ** without limitation the rights to use, copy, modify, merge, publish,
 ** distribute, sublicense, and/or sell copies of the Materials, and to
 ** permit persons to whom the Materials are furnished to do so, subject to
 ** the following conditions:
 **
 ** The above copyright notice and this permission notice shall be included
 ** in all copies or substantial portions of the Materials.
 **
 ** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 ** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 ** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 ** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 ** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 ** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
 */

 -->

 <!DOCTYPE html>
 <html>
 <head>
 <meta charset="utf-8">
 <title>WebGL Non-Power of 2 texture conformance test.</title>
 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
 <script src="../../resources/js-test-pre.js"></script>
 <script src="../resources/webgl-test-utils.js"> </script>
 </head>
 <body>
 <canvas id="example" width="4" height="4" style="width: 40px; height: 30px;"></canvas>
 <div id="description"></div>
 <div id="console"></div>
 <script id="vshader" type="x-shader/x-vertex">
 attribute vec4 vPosition;
 attribute vec2 texCoord0;
 varying vec2 texCoord;
 void main()
 {
     gl_Position = vPosition;
     texCoord = texCoord0;
 }
 </script>

 <script id="fshader" type="x-shader/x-fragment">
 precision mediump float;
 uniform samplerCube tex;
 varying vec2 texCoord;
 void main()
 {
     gl_FragColor = textureCube(tex, normalize(vec3(texCoord, 1)));
 }
 </script>
 <script>
 "use strict";
 description(document.title);
 var wtu = WebGLTestUtils;
 var gl = wtu.create3DContext("example");
 var program = wtu.setupTexturedQuad(gl);

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

 var tests = [
   { format: gl.RGBA,
     type: gl.UNSIGNED_BYTE,
     color: [192, 0, 128, 64],
     expected: [192, 0, 128, 64],
     tolerance: 0,
   },
   { format: gl.RGB,
     type: gl.UNSIGNED_BYTE,
     color: [192, 0, 128],
     expected: [192, 0, 128, 255],
     tolerance: 0,
   },
   { format: gl.LUMINANCE,
     type: gl.UNSIGNED_BYTE,
     color: [192],
     expected: [192, 192, 192, 255],
     tolerance: 0,
   },
   { format: gl.ALPHA,
     type: gl.UNSIGNED_BYTE,
     color: [64],
     expected: [0, 0, 0, 64],
     tolerance: 0,
   },
   { format: gl.LUMINANCE_ALPHA,
     type: gl.UNSIGNED_BYTE,
     color: [192, 64],
     expected: [192, 192, 192, 64],
     tolerance: 0,
   },
   // { format: gl.RGBA,
   //   type: gl.UNSIGNED_SHORT_4_4_4_4,
   //   color: [0x48FC],
   //   expected: [0x44, 0x88, 0xFF, 0xCC],
   //   tolerance: 16,
   // },
   // { format: gl.RGBA,
   //   type: gl.UNSIGNED_SHORT_5_5_5_1,
   //   color: [0x8309],  // 10000 01000 00100 1
   //   expected: [128, 64, 32, 255],
   //   tolerance: 16,
   // },
   // { format: gl.RGB,
   //   type: gl.UNSIGNED_SHORT_5_6_5,
   //   color: [0x8404],  // 10000 010000 00100
   //   expected: [128, 64, 32],
   //   tolerance: 16,
   // },
 ];

 tests.forEach(function(test) {
   debug("");
   debug("test " + wtu.glEnumToString(gl, test.format) + "/" + wtu.glEnumToString(gl, test.type));
   var tex = gl.createTexture();

   // Check that an NPOT texture not on level 0 generates INVALID_VALUE
   wtu.fillTexture(gl, tex, 5, 3, test.color, 1, test.format, test.type);
   wtu.glErrorShouldBe(gl, gl.INVALID_VALUE,
       "gl.texImage2D with NPOT texture with level > 0 should return INVALID_VALUE");

   // Check that an NPOT texture on level 0 succeeds
   wtu.fillTexture(gl, tex, 5, 3, test.color, 0, test.format, test.type);
   wtu.glErrorShouldBe(gl, gl.NO_ERROR,
       "gl.texImage2D with NPOT texture at level 0 should succeed");

   // Check that generateMipmap fails on NPOT
   gl.generateMipmap(gl.TEXTURE_2D);
   wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION,
       "gl.generateMipmap with NPOT texture should return INVALID_OPERATION");

   // Check that nothing is drawn if filtering is not correct for NPOT
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);

   wtu.clearAndDrawUnitQuad(gl);
   wtu.checkCanvas(
       gl, [0, 0, 0, 255],
       "NPOT texture with TEXTURE_WRAP set to REPEAT should draw with 0,0,0,255");
   wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");

   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST_MIPMAP_LINEAR);

   wtu.clearAndDrawUnitQuad(gl);
   wtu.checkCanvas(
       gl, [0, 0, 0, 255],
       "NPOT texture with TEXTURE_MIN_FILTER not NEAREST or LINEAR should draw with 0,0,0,255");
   wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");

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

   wtu.clearAndDrawUnitQuad(gl);
   wtu.checkCanvas(
       gl, test.expected,
       "NPOT texture with TEXTURE_MIN_FILTER set to LINEAR should draw.");

   gl.copyTexImage2D(gl.TEXTURE_2D, 1, test.format, 0, 0, 5, 3, 0);
   wtu.glErrorShouldBe(gl, gl.INVALID_VALUE,
       "copyTexImage2D with NPOT texture with level > 0 should return INVALID_VALUE.");

   // Check that generateMipmap for an POT texture succeeds
   wtu.fillTexture(gl, tex, 4, 4, test.color, 0, test.format);
   gl.generateMipmap(gl.TEXTURE_2D);
   wtu.glErrorShouldBe(gl, gl.NO_ERROR,
       "gl.texImage2D and gl.generateMipmap with POT texture at level 0 should succeed");

   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_LINEAR);
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);

   wtu.clearAndDrawUnitQuad(gl);
   wtu.checkCanvas(
       gl, test.expected,
       "POT texture with TEXTURE_MIN_FILTER set to LINEAR_MIPMAP_LINEAR should draw.");
   wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");
 });

 var testCubemap = function(switchTextureUnitBeforeDraw) {
   debug("");
   var title = "check using cubemap";
   if (switchTextureUnitBeforeDraw) {
     title += " and switch texture unit before draw to check for Chromium bug";
   }
   debug(title);
   var program = wtu.setupProgram(
       gl, ['vshader', 'fshader'], ['vPosition', 'texCoord0'], [0, 1]);
   var tex = gl.createTexture();

   // Check that an NPOT texture not on level 0 generates INVALID_VALUE
   fillCubeTexture(gl, tex, 5, 3, [0, 192, 128, 255], 1);
   wtu.glErrorShouldBe(gl, gl.INVALID_VALUE,
       "gl.texImage2D with NPOT texture with level > 0 should return INVALID_VALUE");

   // Check that an NPOT texture on level 0 succeeds
   fillCubeTexture(gl, tex, 5, 5, [0, 192, 128, 255]);
   wtu.glErrorShouldBe(gl, gl.NO_ERROR,
       "gl.texImage2D with NPOT texture at level 0 should succeed");

   // Check that generateMipmap fails on NPOT
   gl.generateMipmap(gl.TEXTURE_CUBE_MAP);
   wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION,
       "gl.generateMipmap with NPOT texture should return INVALID_OPERATION");

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

   // Check that nothing is drawn if filtering is not correct for NPOT
   gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
   gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
   gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_WRAP_S, gl.REPEAT);
   gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_WRAP_T, gl.REPEAT);

   if (switchTextureUnitBeforeDraw) {
     debug("Switching active texture unit to gl.TEXTURE1");
     // Test for http://crbug.com/390514
     gl.activeTexture(gl.TEXTURE1);
   }

   wtu.clearAndDrawUnitQuad(gl);
   wtu.checkCanvas(
       gl, [0, 0, 0, 255],
       "NPOT cubemap with TEXTURE_WRAP set to REPEAT should draw with 0,0,0,255");

   if (switchTextureUnitBeforeDraw) {
     var error = gl.getError();
     if (error === gl.NO_ERROR) {
       testPassed("getError was expected value: NO_ERROR : Should be no errors from draw.");
     } else if (error === gl.INVALID_ENUM) {
       testFailed("getError returned INVALID_ENUM. Possibly Chromium bug where texture unit is set to 0 instead of GL_TEXTURE0.");
     } else {
       testFailed("Drawing resulted in error: " + wtu.glEnumToString(gl, error));
     }
     gl.activeTexture(gl.TEXTURE0);
   } else {
     wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from draw.");
   }

   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.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MIN_FILTER, gl.NEAREST_MIPMAP_LINEAR);

   wtu.clearAndDrawUnitQuad(gl);
   wtu.checkCanvas(
       gl, [0, 0, 0, 255],
       "NPOT cubemap with TEXTURE_MIN_FILTER not NEAREST or LINEAR should draw with 0,0,0,255");
   wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");

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

   wtu.clearAndDrawUnitQuad(gl);
   wtu.checkCanvas(
       gl, [0, 192, 128, 255],
       "NPOT cubemap with TEXTURE_MIN_FILTER set to LINEAR should draw.");

   // Check that an POT texture on level 0 succeeds
   fillCubeTexture(gl, tex, 4, 4, [0, 192, 128, 255]);
   wtu.glErrorShouldBe(gl, gl.NO_ERROR,
       "gl.texImage2D with POT texture at level 0 should succeed");

   gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_LINEAR);
   gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
   gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_WRAP_S, gl.REPEAT);
   gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_WRAP_T, gl.REPEAT);

   wtu.clearAndDrawUnitQuad(gl);
   wtu.checkCanvas(
       gl, [0, 0, 0, 255],
       "POT cubemap with TEXTURE_MIN_FILTER set to LINEAR_MIPMAP_LINEAR but no mips draw with 0,0,0,255");

   // Check that generateMipmap succeeds on POT
   gl.generateMipmap(gl.TEXTURE_CUBE_MAP);
   wtu.glErrorShouldBe(gl, gl.NO_ERROR,
       "gl.generateMipmap with POT texture should return succeed");

   wtu.clearAndDrawUnitQuad(gl);
   wtu.checkCanvas(
       gl, [0, 192, 128, 255],
       "POT cubemap with TEXTURE_MIN_FILTER set to LINEAR_MIPMAP_LINEAR should draw.");
 };

 testCubemap(false);
 testCubemap(true);

 var successfullyParsed = true;

 function fillCubeTexture(gl, tex, width, height, color, opt_level) {
   opt_level = opt_level || 0;
   var canvas = document.createElement('canvas');
   canvas.width = width;
   canvas.height = height;
   var ctx2d = canvas.getContext('2d');
   ctx2d.fillStyle = "rgba(" + color[0] + "," + color[1] + "," + color[2] + "," + color[3] + ")";
   ctx2d.fillRect(0, 0, width, height);
   gl.bindTexture(gl.TEXTURE_CUBE_MAP, tex);
   var targets = [
     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];
   for (var tt = 0; tt < targets.length; ++tt) {
     gl.texImage2D(
         targets[tt], opt_level, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, canvas);
   }
 };

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

 </body>
 </html>
	<!--

	/*
	** Copyright (c) 2012 The Khronos Group Inc.
	**
	** Permission is hereby granted, free of charge, to any person obtaining a
	** copy of this software and/or associated documentation files (the
	** "Materials"), to deal in the Materials without restriction, including
	** without limitation the rights to use, copy, modify, merge, publish,
	** distribute, sublicense, and/or sell copies of the Materials, and to
	** permit persons to whom the Materials are furnished to do so, subject to
	** the following conditions:
	**
	** The above copyright notice and this permission notice shall be included
	** in all copies or substantial portions of the Materials.
	**
	** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
	** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
	** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
	** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
	** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
	*/

	-->

	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<title>WebGL Non-Power of 2 texture conformance test.</title>
	<link rel="stylesheet" href="../../resources/js-test-style.css"/>
	<script src="../../resources/js-test-pre.js"></script>
	<script src="../resources/webgl-test-utils.js"> </script>
	</head>
	<body>
	<canvas id="example" width="4" height="4" style="width: 40px; height: 30px;"></canvas>
	<div id="description"></div>
	<div id="console"></div>
	<script id="vshader" type="x-shader/x-vertex">
	attribute vec4 vPosition;
	attribute vec2 texCoord0;
	varying vec2 texCoord;
	void main()
	{
	gl_Position = vPosition;
	texCoord = texCoord0;
	}
	</script>

	<script id="fshader" type="x-shader/x-fragment">
	precision mediump float;
	uniform samplerCube tex;
	varying vec2 texCoord;
	void main()
	{
	gl_FragColor = textureCube(tex, normalize(vec3(texCoord, 1)));
	}
	</script>
	<script>
	"use strict";
	description(document.title);
	var wtu = WebGLTestUtils;
	var gl = wtu.create3DContext("example");
	var program = wtu.setupTexturedQuad(gl);

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

	var tests = [
	{ format: gl.RGBA,
	type: gl.UNSIGNED_BYTE,
	color: [192, 0, 128, 64],
	expected: [192, 0, 128, 64],
	tolerance: 0,
	},
	{ format: gl.RGB,
	type: gl.UNSIGNED_BYTE,
	color: [192, 0, 128],
	expected: [192, 0, 128, 255],
	tolerance: 0,
	},
	{ format: gl.LUMINANCE,
	type: gl.UNSIGNED_BYTE,
	color: [192],
	expected: [192, 192, 192, 255],
	tolerance: 0,
	},
	{ format: gl.ALPHA,
	type: gl.UNSIGNED_BYTE,
	color: [64],
	expected: [0, 0, 0, 64],
	tolerance: 0,
	},
	{ format: gl.LUMINANCE_ALPHA,
	type: gl.UNSIGNED_BYTE,
	color: [192, 64],
	expected: [192, 192, 192, 64],
	tolerance: 0,
	},
	// { format: gl.RGBA,
	// type: gl.UNSIGNED_SHORT_4_4_4_4,
	// color: [0x48FC],
	// expected: [0x44, 0x88, 0xFF, 0xCC],
	// tolerance: 16,
	// },
	// { format: gl.RGBA,
	// type: gl.UNSIGNED_SHORT_5_5_5_1,
	// color: [0x8309], // 10000 01000 00100 1
	// expected: [128, 64, 32, 255],
	// tolerance: 16,
	// },
	// { format: gl.RGB,
	// type: gl.UNSIGNED_SHORT_5_6_5,
	// color: [0x8404], // 10000 010000 00100
	// expected: [128, 64, 32],
	// tolerance: 16,
	// },
	];

	tests.forEach(function(test) {
	debug("");
	debug("test " + wtu.glEnumToString(gl, test.format) + "/" + wtu.glEnumToString(gl, test.type));
	var tex = gl.createTexture();

	// Check that an NPOT texture not on level 0 generates INVALID_VALUE
	wtu.fillTexture(gl, tex, 5, 3, test.color, 1, test.format, test.type);
	wtu.glErrorShouldBe(gl, gl.INVALID_VALUE,
	"gl.texImage2D with NPOT texture with level > 0 should return INVALID_VALUE");

	// Check that an NPOT texture on level 0 succeeds
	wtu.fillTexture(gl, tex, 5, 3, test.color, 0, test.format, test.type);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR,
	"gl.texImage2D with NPOT texture at level 0 should succeed");

	// Check that generateMipmap fails on NPOT
	gl.generateMipmap(gl.TEXTURE_2D);
	wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION,
	"gl.generateMipmap with NPOT texture should return INVALID_OPERATION");

	// Check that nothing is drawn if filtering is not correct for NPOT
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);

	wtu.clearAndDrawUnitQuad(gl);
	wtu.checkCanvas(
	gl, [0, 0, 0, 255],
	"NPOT texture with TEXTURE_WRAP set to REPEAT should draw with 0,0,0,255");
	wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");

	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST_MIPMAP_LINEAR);

	wtu.clearAndDrawUnitQuad(gl);
	wtu.checkCanvas(
	gl, [0, 0, 0, 255],
	"NPOT texture with TEXTURE_MIN_FILTER not NEAREST or LINEAR should draw with 0,0,0,255");
	wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");

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

	wtu.clearAndDrawUnitQuad(gl);
	wtu.checkCanvas(
	gl, test.expected,
	"NPOT texture with TEXTURE_MIN_FILTER set to LINEAR should draw.");

	gl.copyTexImage2D(gl.TEXTURE_2D, 1, test.format, 0, 0, 5, 3, 0);
	wtu.glErrorShouldBe(gl, gl.INVALID_VALUE,
	"copyTexImage2D with NPOT texture with level > 0 should return INVALID_VALUE.");

	// Check that generateMipmap for an POT texture succeeds
	wtu.fillTexture(gl, tex, 4, 4, test.color, 0, test.format);
	gl.generateMipmap(gl.TEXTURE_2D);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR,
	"gl.texImage2D and gl.generateMipmap with POT texture at level 0 should succeed");

	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_LINEAR);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT);
	gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT);

	wtu.clearAndDrawUnitQuad(gl);
	wtu.checkCanvas(
	gl, test.expected,
	"POT texture with TEXTURE_MIN_FILTER set to LINEAR_MIPMAP_LINEAR should draw.");
	wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");
	});

	var testCubemap = function(switchTextureUnitBeforeDraw) {
	debug("");
	var title = "check using cubemap";
	if (switchTextureUnitBeforeDraw) {
	title += " and switch texture unit before draw to check for Chromium bug";
	}
	debug(title);
	var program = wtu.setupProgram(
	gl, ['vshader', 'fshader'], ['vPosition', 'texCoord0'], [0, 1]);
	var tex = gl.createTexture();

	// Check that an NPOT texture not on level 0 generates INVALID_VALUE
	fillCubeTexture(gl, tex, 5, 3, [0, 192, 128, 255], 1);
	wtu.glErrorShouldBe(gl, gl.INVALID_VALUE,
	"gl.texImage2D with NPOT texture with level > 0 should return INVALID_VALUE");

	// Check that an NPOT texture on level 0 succeeds
	fillCubeTexture(gl, tex, 5, 5, [0, 192, 128, 255]);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR,
	"gl.texImage2D with NPOT texture at level 0 should succeed");

	// Check that generateMipmap fails on NPOT
	gl.generateMipmap(gl.TEXTURE_CUBE_MAP);
	wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION,
	"gl.generateMipmap with NPOT texture should return INVALID_OPERATION");

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

	// Check that nothing is drawn if filtering is not correct for NPOT
	gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
	gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
	gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_WRAP_S, gl.REPEAT);
	gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_WRAP_T, gl.REPEAT);

	if (switchTextureUnitBeforeDraw) {
	debug("Switching active texture unit to gl.TEXTURE1");
	// Test for http://crbug.com/390514
	gl.activeTexture(gl.TEXTURE1);
	}

	wtu.clearAndDrawUnitQuad(gl);
	wtu.checkCanvas(
	gl, [0, 0, 0, 255],
	"NPOT cubemap with TEXTURE_WRAP set to REPEAT should draw with 0,0,0,255");

	if (switchTextureUnitBeforeDraw) {
	var error = gl.getError();
	if (error === gl.NO_ERROR) {
	testPassed("getError was expected value: NO_ERROR : Should be no errors from draw.");
	} else if (error === gl.INVALID_ENUM) {
	testFailed("getError returned INVALID_ENUM. Possibly Chromium bug where texture unit is set to 0 instead of GL_TEXTURE0.");
	} else {
	testFailed("Drawing resulted in error: " + wtu.glEnumToString(gl, error));
	}
	gl.activeTexture(gl.TEXTURE0);
	} else {
	wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from draw.");
	}

	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.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MIN_FILTER, gl.NEAREST_MIPMAP_LINEAR);

	wtu.clearAndDrawUnitQuad(gl);
	wtu.checkCanvas(
	gl, [0, 0, 0, 255],
	"NPOT cubemap with TEXTURE_MIN_FILTER not NEAREST or LINEAR should draw with 0,0,0,255");
	wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");

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

	wtu.clearAndDrawUnitQuad(gl);
	wtu.checkCanvas(
	gl, [0, 192, 128, 255],
	"NPOT cubemap with TEXTURE_MIN_FILTER set to LINEAR should draw.");

	// Check that an POT texture on level 0 succeeds
	fillCubeTexture(gl, tex, 4, 4, [0, 192, 128, 255]);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR,
	"gl.texImage2D with POT texture at level 0 should succeed");

	gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_LINEAR);
	gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
	gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_WRAP_S, gl.REPEAT);
	gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_WRAP_T, gl.REPEAT);

	wtu.clearAndDrawUnitQuad(gl);
	wtu.checkCanvas(
	gl, [0, 0, 0, 255],
	"POT cubemap with TEXTURE_MIN_FILTER set to LINEAR_MIPMAP_LINEAR but no mips draw with 0,0,0,255");

	// Check that generateMipmap succeeds on POT
	gl.generateMipmap(gl.TEXTURE_CUBE_MAP);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR,
	"gl.generateMipmap with POT texture should return succeed");

	wtu.clearAndDrawUnitQuad(gl);
	wtu.checkCanvas(
	gl, [0, 192, 128, 255],
	"POT cubemap with TEXTURE_MIN_FILTER set to LINEAR_MIPMAP_LINEAR should draw.");
	};

	testCubemap(false);
	testCubemap(true);

	var successfullyParsed = true;

	function fillCubeTexture(gl, tex, width, height, color, opt_level) {
	opt_level = opt_level \|\| 0;
	var canvas = document.createElement('canvas');
	canvas.width = width;
	canvas.height = height;
	var ctx2d = canvas.getContext('2d');
	ctx2d.fillStyle = "rgba(" + color[0] + "," + color[1] + "," + color[2] + "," + color[3] + ")";
	ctx2d.fillRect(0, 0, width, height);
	gl.bindTexture(gl.TEXTURE_CUBE_MAP, tex);
	var targets = [
	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];
	for (var tt = 0; tt < targets.length; ++tt) {
	gl.texImage2D(
	targets[tt], opt_level, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, canvas);
	}
	};

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

	</body>
	</html>