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Diffstat (limited to 'dom/canvas/test/webgl-conf/checkout/extra/slow-shader-example.html')
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diff --git a/dom/canvas/test/webgl-conf/checkout/extra/slow-shader-example.html b/dom/canvas/test/webgl-conf/checkout/extra/slow-shader-example.html new file mode 100644 index 000000000..0970a3842 --- /dev/null +++ b/dom/canvas/test/webgl-conf/checkout/extra/slow-shader-example.html @@ -0,0 +1,133 @@ +<!-- + +/* +** 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 Slow Shader example.</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="1024" height="1024" style="width: 40px; height: 40px;"> +</canvas> +<div id="description"></div> +<div id="console"></div> +<script id="slow" type="text/something-not-javascript"> +precision mediump float; +uniform sampler2D tex; +varying vec2 texCoord; +void main() { + gl_FragColor = texture2D(tex, texture2D(tex, texture2D(tex, texCoord).xy).xy); +} +</script> +<script> +"use strict"; +window.onload = main; + +debug("Tests drawing a very slow shader."); +var wtu = WebGLTestUtils; +var canvas = document.getElementById("example"); +canvas.addEventListener("webglcontextlost", function(e) { e.preventDefault(); }, false); +canvas.addEventListener("webglcontextrestored", function(e) { }, false); +var gl = wtu.create3DContext(canvas); +var maxTexSize = gl.getParameter(gl.MAX_TEXTURE_SIZE); +var texSize = Math.min(maxTexSize, 4096); +debug("Max Texture size: " + maxTexSize); +debug("Texture size: " + texSize); +var shaderSource = + document.getElementById("slow").text.replace(/\$size/g, texSize + ".0"); +wtu.glErrorShouldBe(gl, gl.NO_ERROR, "after getting a context"); +var program = wtu.setupProgram( + gl, + [wtu.simpleTextureVertexShader, shaderSource], + ['vPosition', 'texCoord0'], + [0, 1]); +wtu.setupUnitQuad(gl, 0, 1); +wtu.glErrorShouldBe(gl, gl.NO_ERROR, "after program setup"); +var tex = gl.createTexture(); +gl.enable(gl.BLEND); +gl.disable(gl.DEPTH_TEST); + +wtu.glErrorShouldBe(gl, gl.NO_ERROR, "after creating texture"); +debug("preparing..."); +var numBytes = texSize * texSize * 4; +var pixelBuf = new ArrayBuffer(numBytes); +var pixels = new Uint8Array(pixelBuf); +for (var ii = 0; ii < numBytes; ++ii) { + pixels[ii] = Math.random() * 255; +} +gl.bindTexture(gl.TEXTURE_2D, tex); +gl.texImage2D( + gl.TEXTURE_2D, 0, gl.RGBA, texSize, texSize, 0, + gl.RGBA, gl.UNSIGNED_BYTE, pixels); +wtu.glErrorShouldBe(gl, gl.NO_ERROR, "after texture setup"); + +gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.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.glErrorShouldBe(gl, gl.NO_ERROR, "after texture param setting"); + +var loc = gl.getUniformLocation(program, "tex"); +wtu.glErrorShouldBe(gl, gl.NO_ERROR, "after getting tex location"); +gl.uniform1i(loc, 0); +wtu.glErrorShouldBe(gl, gl.NO_ERROR, "after setting tex uniform"); + +var numQuads = 1000; +var indexBuf = new ArrayBuffer(numQuads * 6); +var indices = new Uint8Array(indexBuf); +for (var ii = 0; ii < numQuads; ++ii) { + var offset = ii * 6; + indices[offset + 0] = 0; + indices[offset + 1] = 1; + indices[offset + 2] = 2; + indices[offset + 3] = 3; + indices[offset + 4] = 4; + indices[offset + 5] = 5; +} +var indexBuffer = gl.createBuffer(); +gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, indexBuffer); +gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, indices, gl.STATIC_DRAW); +wtu.glErrorShouldBe(gl, gl.NO_ERROR, "after setting up indices"); + +function main () { + if (confirm( + "After clicking OK your machine may become unresponsive or crash.")) { + gl.drawElements(gl.TRIANGLES, numQuads * 6, gl.UNSIGNED_BYTE, 0); + wtu.glErrorShouldBe(gl, gl.NO_ERROR, "after drawing"); + } else { + debug("cancelled"); + } +} + +var successfullyParsed = true; +</script> +</body> +</html> |