LayoutTests/webgl/2.0.0/resources/webgl_test_files/extra/out-of-bounds-uniform-array-access.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 out of bounds uniform array access.</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 style="background: #666;">
 <div id="description"></div>
 <div id="console"></div>
 <div>elem mult: <span id="elemMultDisplay"></span></div>
 <input type="range" id="elemMult" value="4" min="0" max="2048" style="width: 100%;"/>
 <div>line width: <span id="lineWidthDisplay"></span></div>
 <input type="range" id="lineWidth" value="512" min="0" max="2540" style="width: 100%;"/>
 <canvas id="example" width="256" height="256" style="background: black;">
 </canvas>
 <script id="vshader" type="x-shader/x-vertex">
 attribute vec4 vPosition;
 varying vec4 v_color;
 uniform float lineWidth;
 uniform int elemMult;
 uniform vec4 someArray[2];
 void main()
 {
     vec2 texcoord = vec2(vPosition.xy * 0.5 + vec2(0.5, 0.5));
     int index = int(texcoord.x + texcoord.y * lineWidth) * elemMult;
     v_color = someArray[index];
     gl_Position = vPosition;
 }
 </script>

 <script id="fshader" type="x-shader/x-fragment">
 precision mediump float;
 varying vec4 v_color;
 void main()
 {
   gl_FragColor = v_color * vec4(1.0 / 256.0, 1.0 / 256.0, 1.0 / 256.0, 1.0 / 256.0) + vec4(0,0,0,0.5);
 }
 </script>
 <script>
 "use strict";
 window.onload = main;
 debug("Tests a WebGL program that accesses out of bounds uniform array elements");

 function main() {
   var wtu = WebGLTestUtils;
   var gl = wtu.create3DContext("example");
   var program = wtu.setupProgram(
       gl,
       ['vshader', 'fshader'],
       ['vPosition'], [0]);
   var gridRes = 255;
   wtu.setupIndexedQuad(gl, gridRes, 0);
   var lineWidthLoc = gl.getUniformLocation(program, "lineWidth");
   var elemMultLoc = gl.getUniformLocation(program, "elemMult");
   assertMsg(gl.getError() == gl.NO_ERROR, "Should be no errors from setup.");

   var lineWidth = 512;
   var lineWidthElem = document.getElementById("lineWidth");
   var lineWidthDisplayElem = document.getElementById("lineWidthDisplay");

   lineWidthElem.value = lineWidth;

   lineWidthElem.addEventListener('change', function(event) {
       //console.log(event.target.value);
       lineWidth = event.target.value;
       draw();
     }, false);

   var elemMult = 4;
   var elemMultElem = document.getElementById("elemMult");
   var elemMultDisplayElem = document.getElementById("elemMultDisplay");

   elemMultElem.value = elemMult;

   elemMultElem.addEventListener('change', function(event) {
       //console.log(event.target.value);
       elemMult = event.target.value;
       draw();
     }, false);

   draw();

   function draw() {
     lineWidthDisplayElem.innerText = lineWidth;
     elemMultDisplayElem.innerText = elemMult;
     gl.uniform1f(lineWidthLoc, lineWidth);
     gl.uniform1i(elemMultLoc, elemMult);
     gl.drawElements(gl.TRIANGLES, gridRes * gridRes * 6, gl.UNSIGNED_SHORT, 0);
   }

   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 out of bounds uniform array access.</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 style="background: #666;">
	<div id="description"></div>
	<div id="console"></div>
	<div>elem mult: <span id="elemMultDisplay"></span></div>
	<input type="range" id="elemMult" value="4" min="0" max="2048" style="width: 100%;"/>
	<div>line width: <span id="lineWidthDisplay"></span></div>
	<input type="range" id="lineWidth" value="512" min="0" max="2540" style="width: 100%;"/>
	<canvas id="example" width="256" height="256" style="background: black;">
	</canvas>
	<script id="vshader" type="x-shader/x-vertex">
	attribute vec4 vPosition;
	varying vec4 v_color;
	uniform float lineWidth;
	uniform int elemMult;
	uniform vec4 someArray[2];
	void main()
	{
	vec2 texcoord = vec2(vPosition.xy * 0.5 + vec2(0.5, 0.5));
	int index = int(texcoord.x + texcoord.y * lineWidth) * elemMult;
	v_color = someArray[index];
	gl_Position = vPosition;
	}
	</script>

	<script id="fshader" type="x-shader/x-fragment">
	precision mediump float;
	varying vec4 v_color;
	void main()
	{
	gl_FragColor = v_color * vec4(1.0 / 256.0, 1.0 / 256.0, 1.0 / 256.0, 1.0 / 256.0) + vec4(0,0,0,0.5);
	}
	</script>
	<script>
	"use strict";
	window.onload = main;
	debug("Tests a WebGL program that accesses out of bounds uniform array elements");

	function main() {
	var wtu = WebGLTestUtils;
	var gl = wtu.create3DContext("example");
	var program = wtu.setupProgram(
	gl,
	['vshader', 'fshader'],
	['vPosition'], [0]);
	var gridRes = 255;
	wtu.setupIndexedQuad(gl, gridRes, 0);
	var lineWidthLoc = gl.getUniformLocation(program, "lineWidth");
	var elemMultLoc = gl.getUniformLocation(program, "elemMult");
	assertMsg(gl.getError() == gl.NO_ERROR, "Should be no errors from setup.");

	var lineWidth = 512;
	var lineWidthElem = document.getElementById("lineWidth");
	var lineWidthDisplayElem = document.getElementById("lineWidthDisplay");

	lineWidthElem.value = lineWidth;

	lineWidthElem.addEventListener('change', function(event) {
	//console.log(event.target.value);
	lineWidth = event.target.value;
	draw();
	}, false);

	var elemMult = 4;
	var elemMultElem = document.getElementById("elemMult");
	var elemMultDisplayElem = document.getElementById("elemMultDisplay");

	elemMultElem.value = elemMult;

	elemMultElem.addEventListener('change', function(event) {
	//console.log(event.target.value);
	elemMult = event.target.value;
	draw();
	}, false);

	draw();

	function draw() {
	lineWidthDisplayElem.innerText = lineWidth;
	elemMultDisplayElem.innerText = elemMult;
	gl.uniform1f(lineWidthLoc, lineWidth);
	gl.uniform1i(elemMultLoc, elemMult);
	gl.drawElements(gl.TRIANGLES, gridRes * gridRes * 6, gl.UNSIGNED_SHORT, 0);
	}

	var successfullyParsed = true;
	}

	</script>
	</body>
	</html>