LayoutTests/webgl/1.0.3/resources/webgl_test_files/conformance/textures/texture-size-limit.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 texture size limit 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="32" height="32" style="width: 40px; height: 40px;"></canvas>
 <div id="description"></div>
 <div id="console"></div>
 <script>
 "use strict";
 description("Checks various size limits of textures")
 var canvas;

 function numLevelsFromSize(size) {
   var levels = 0;
   while ((size >> levels) > 0) {
     ++levels;
   }
   return levels;
 }

 var wtu = WebGLTestUtils;
 var gl = wtu.create3DContext("example");
 var tests = [
   { format: gl.ALPHA,           type: gl.UNSIGNED_BYTE,          size: 1, dataType: Uint8Array  },
   { format: gl.LUMINANCE,       type: gl.UNSIGNED_BYTE,          size: 1, dataType: Uint8Array  },
   { format: gl.LUMINANCE_ALPHA, type: gl.UNSIGNED_BYTE,          size: 2, dataType: Uint8Array  },
   { format: gl.RGB,             type: gl.UNSIGNED_BYTE,          size: 3, dataType: Uint8Array  },
   { format: gl.RGB,             type: gl.UNSIGNED_SHORT_5_6_5,   size: 1, dataType: Uint16Array },
   { format: gl.RGBA,            type: gl.UNSIGNED_BYTE,          size: 4, dataType: Uint8Array  },
   { format: gl.RGBA,            type: gl.UNSIGNED_SHORT_4_4_4_4, size: 1, dataType: Uint16Array },
   { format: gl.RGBA,            type: gl.UNSIGNED_SHORT_5_5_5_1, size: 1, dataType: Uint16Array }
 ];

 // Note: We expressly only use 2 textures because first a texture will be defined
 // using all mip levels of 1 format, then for a moment it will have mixed formats which
 // may uncover bugs.
 var targets = [
   { target: gl.TEXTURE_2D,
     maxSize: gl.getParameter(gl.MAX_TEXTURE_SIZE),
     maxLevel: 1000,
     targets: [gl.TEXTURE_2D]
   },
   { target: gl.TEXTURE_CUBE_MAP,
     maxSize: gl.getParameter(gl.MAX_CUBE_MAP_TEXTURE_SIZE),
     maxLevel: 5,
     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
     ]
   }
 ];

 gl.pixelStorei(gl.UNPACK_ALIGNMENT, 1);

 var trg = 0;
 var tt = 0;
 var tex = null;
 runNextTest();

 function runNextTest() {
   var t = targets[trg];

   if (tt == 0) {
     gl.deleteTexture(tex);
     tex = gl.createTexture();
     gl.bindTexture(t.target, tex);

     debug("");
     debug("max size for " + wtu.glEnumToString(gl, t.target) + ": " + t.maxSize);
     var numLevels = numLevelsFromSize(t.maxSize);
     debug("num levels " + numLevels);
   }

   var test = tests[tt];
   testFormatType(t, test);
   ++tt;
   if (tt == tests.length) {
     tt = 0;
     ++trg;
     if (trg == targets.length) {
       finishTest();
       return;
     }
   }
   wtu.dispatchTask(runNextTest)
 }

 function testFormatType(t, test) {
   debug("");
   debug("testing: " + wtu.glEnumToString(gl, test.format) + ", " + wtu.glEnumToString(gl, test.type));

   for (var j = 0; j < t.targets.length; ++j) {
     var target = t.targets[j];
     debug("");
     debug(wtu.glEnumToString(gl, target));
     var numLevels = numLevelsFromSize(t.maxSize);

     // out of bounds tests
     for (var i = 0; i < numLevels; i++) {
       // width and height out of bounds
       var size = t.maxSize >> i;
       gl.texImage2D(target, i, test.format, size + 1, size + 1, 0, test.format, test.type, null);
       wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "width or height out of bounds: should generate INVALID_VALUE: level is " + i + ", size is "
         + (size + 1) + "x" + (size + 1));
     }
     // level out of bounds
     gl.texImage2D(target, numLevels, test.format, 1, 1, 0, test.format, test.type, null);
     wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "level out of bounds: should generate INVALID_VALUE: level is: "
         + numLevels + ", size is 1x1.");

     // Probe to discover the max non-OOM level.
     // For instance, on some drivers (at least Intel+Mesa) we can create
     // a maxLevel L8 texture, but only a maxLevel-1 RGB8 texture.
     var maxLevelsForFormat = numLevels;
     while (true) {
       gl.texImage2D(target, maxLevelsForFormat-1, test.format, 1, 1, 0, test.format, test.type, null);
       var err = gl.getError();
       if (err == gl.OUT_OF_MEMORY) {
         debug("Probe failed for level=" + (maxLevelsForFormat-1) + ", reducing...");
         maxLevelsForFormat -= 1;
         if (!maxLevelsForFormat) {
           testFailed("Failed to allocate any levels for format " + test.format);
           return;
         }
         continue;
       }
       if (err) {
         testFailed("Should not hit non-OOM errors during max level probing.");
         return;
       }
       break;
     }
     var numTestLevels = Math.min(maxLevelsForFormat, t.maxLevel);
     for (var l = 0; l < numTestLevels; ++l) {
       // Do bottom levels first;
       var size = 1 << l;
       var level = maxLevelsForFormat - l - 1;
       var otherDimension = t.target == gl.TEXTURE_2D ? 1 : size;
       gl.texImage2D(target, level, test.format, size, otherDimension, 0, test.format, test.type, null);
       wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no error for level: " + level + " " + size + "x" + otherDimension);
       if (otherDimension != size) {
         gl.texImage2D(target, level, test.format, otherDimension, size, 0, test.format, test.type, null);
         wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no error for level: " + level + " " + otherDimension + "x" + size);
       }
     }
   }
 }

 var successfullyParsed = true;
 </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 texture size limit 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="32" height="32" style="width: 40px; height: 40px;"></canvas>
	<div id="description"></div>
	<div id="console"></div>
	<script>
	"use strict";
	description("Checks various size limits of textures")
	var canvas;

	function numLevelsFromSize(size) {
	var levels = 0;
	while ((size >> levels) > 0) {
	++levels;
	}
	return levels;
	}

	var wtu = WebGLTestUtils;
	var gl = wtu.create3DContext("example");
	var tests = [
	{ format: gl.ALPHA, type: gl.UNSIGNED_BYTE, size: 1, dataType: Uint8Array },
	{ format: gl.LUMINANCE, type: gl.UNSIGNED_BYTE, size: 1, dataType: Uint8Array },
	{ format: gl.LUMINANCE_ALPHA, type: gl.UNSIGNED_BYTE, size: 2, dataType: Uint8Array },
	{ format: gl.RGB, type: gl.UNSIGNED_BYTE, size: 3, dataType: Uint8Array },
	{ format: gl.RGB, type: gl.UNSIGNED_SHORT_5_6_5, size: 1, dataType: Uint16Array },
	{ format: gl.RGBA, type: gl.UNSIGNED_BYTE, size: 4, dataType: Uint8Array },
	{ format: gl.RGBA, type: gl.UNSIGNED_SHORT_4_4_4_4, size: 1, dataType: Uint16Array },
	{ format: gl.RGBA, type: gl.UNSIGNED_SHORT_5_5_5_1, size: 1, dataType: Uint16Array }
	];

	// Note: We expressly only use 2 textures because first a texture will be defined
	// using all mip levels of 1 format, then for a moment it will have mixed formats which
	// may uncover bugs.
	var targets = [
	{ target: gl.TEXTURE_2D,
	maxSize: gl.getParameter(gl.MAX_TEXTURE_SIZE),
	maxLevel: 1000,
	targets: [gl.TEXTURE_2D]
	},
	{ target: gl.TEXTURE_CUBE_MAP,
	maxSize: gl.getParameter(gl.MAX_CUBE_MAP_TEXTURE_SIZE),
	maxLevel: 5,
	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
	]
	}
	];

	gl.pixelStorei(gl.UNPACK_ALIGNMENT, 1);

	var trg = 0;
	var tt = 0;
	var tex = null;
	runNextTest();

	function runNextTest() {
	var t = targets[trg];

	if (tt == 0) {
	gl.deleteTexture(tex);
	tex = gl.createTexture();
	gl.bindTexture(t.target, tex);

	debug("");
	debug("max size for " + wtu.glEnumToString(gl, t.target) + ": " + t.maxSize);
	var numLevels = numLevelsFromSize(t.maxSize);
	debug("num levels " + numLevels);
	}

	var test = tests[tt];
	testFormatType(t, test);
	++tt;
	if (tt == tests.length) {
	tt = 0;
	++trg;
	if (trg == targets.length) {
	finishTest();
	return;
	}
	}
	wtu.dispatchTask(runNextTest)
	}

	function testFormatType(t, test) {
	debug("");
	debug("testing: " + wtu.glEnumToString(gl, test.format) + ", " + wtu.glEnumToString(gl, test.type));

	for (var j = 0; j < t.targets.length; ++j) {
	var target = t.targets[j];
	debug("");
	debug(wtu.glEnumToString(gl, target));
	var numLevels = numLevelsFromSize(t.maxSize);

	// out of bounds tests
	for (var i = 0; i < numLevels; i++) {
	// width and height out of bounds
	var size = t.maxSize >> i;
	gl.texImage2D(target, i, test.format, size + 1, size + 1, 0, test.format, test.type, null);
	wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "width or height out of bounds: should generate INVALID_VALUE: level is " + i + ", size is "
	+ (size + 1) + "x" + (size + 1));
	}
	// level out of bounds
	gl.texImage2D(target, numLevels, test.format, 1, 1, 0, test.format, test.type, null);
	wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "level out of bounds: should generate INVALID_VALUE: level is: "
	+ numLevels + ", size is 1x1.");

	// Probe to discover the max non-OOM level.
	// For instance, on some drivers (at least Intel+Mesa) we can create
	// a maxLevel L8 texture, but only a maxLevel-1 RGB8 texture.
	var maxLevelsForFormat = numLevels;
	while (true) {
	gl.texImage2D(target, maxLevelsForFormat-1, test.format, 1, 1, 0, test.format, test.type, null);
	var err = gl.getError();
	if (err == gl.OUT_OF_MEMORY) {
	debug("Probe failed for level=" + (maxLevelsForFormat-1) + ", reducing...");
	maxLevelsForFormat -= 1;
	if (!maxLevelsForFormat) {
	testFailed("Failed to allocate any levels for format " + test.format);
	return;
	}
	continue;
	}
	if (err) {
	testFailed("Should not hit non-OOM errors during max level probing.");
	return;
	}
	break;
	}
	var numTestLevels = Math.min(maxLevelsForFormat, t.maxLevel);
	for (var l = 0; l < numTestLevels; ++l) {
	// Do bottom levels first;
	var size = 1 << l;
	var level = maxLevelsForFormat - l - 1;
	var otherDimension = t.target == gl.TEXTURE_2D ? 1 : size;
	gl.texImage2D(target, level, test.format, size, otherDimension, 0, test.format, test.type, null);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no error for level: " + level + " " + size + "x" + otherDimension);
	if (otherDimension != size) {
	gl.texImage2D(target, level, test.format, otherDimension, size, 0, test.format, test.type, null);
	wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no error for level: " + level + " " + otherDimension + "x" + size);
	}
	}
	}
	}

	var successfullyParsed = true;
	</script>
	</body>
	</html>