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comparison: content/canvas/test/webgl-conformance/conformance/textures/tex-image-and-sub-image-2d-with-image.html
content/canvas/test/webgl-conformance/conformance/textures/tex-image-and-sub-image-2d-with-image.html
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| 1 <!-- | |
| 2 Copyright (c) 2011 The Chromium Authors. All rights reserved. | |
| 3 Use of this source code is governed by a BSD-style license that can be | |
| 4 found in the LICENSE file. | |
| 5 --> | |
| 6 <!DOCTYPE html> | |
| 7 <html> | |
| 8 <head> | |
| 9 <meta charset="utf-8"> | |
| 10 <link rel="stylesheet" href="../../resources/js-test-style.css"/> | |
| 11 <script src="../../resources/js-test-pre.js"></script> | |
| 12 <script src="../resources/webgl-test.js"></script> | |
| 13 <script src="../resources/webgl-test-utils.js"></script> | |
| 14 <script> | |
| 15 var wtu = WebGLTestUtils; | |
| 16 var gl = null; | |
| 17 var textureLoc = null; | |
| 18 var successfullyParsed = false; | |
| 19 var imgCanvas; | |
| 20 var red = [255, 0, 0]; | |
| 21 var green = [0, 255, 0]; | |
| 22 | |
| 23 function init() | |
| 24 { | |
| 25 if (window.initNonKhronosFramework) { | |
| 26 window.initNonKhronosFramework(true); | |
| 27 } | |
| 28 | |
| 29 description('Verify texImage2D and texSubImage2D code paths taking Images'); | |
| 30 | |
| 31 gl = wtu.create3DContext("example"); | |
| 32 var program = wtu.setupTexturedQuad(gl); | |
| 33 | |
| 34 gl.clearColor(0,0,0,1); | |
| 35 gl.clearDepth(1); | |
| 36 | |
| 37 textureLoc = gl.getUniformLocation(program, "tex"); | |
| 38 | |
| 39 wtu.loadTexture(gl, "../resources/red-green.png", runTest); | |
| 40 } | |
| 41 | |
| 42 // These two declarations need to be global for "shouldBe" to see them | |
| 43 var buf = null; | |
| 44 var idx = 0; | |
| 45 var pixel = [0, 0, 0]; | |
| 46 var correctColor = null; | |
| 47 | |
| 48 function runOneIteration(image, useTexSubImage2D, flipY, topColor, bottomColor) | |
| 49 { | |
| 50 debug('Testing ' + (useTexSubImage2D ? 'texSubImage2D' : 'texImage2D') + | |
| 51 ' with flipY=' + flipY); | |
| 52 gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); | |
| 53 // Disable any writes to the alpha channel | |
| 54 gl.colorMask(1, 1, 1, 0); | |
| 55 var texture = gl.createTexture(); | |
| 56 // Bind the texture to texture unit 0 | |
| 57 gl.bindTexture(gl.TEXTURE_2D, texture); | |
| 58 // Set up texture parameters | |
| 59 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); | |
| 60 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST); | |
| 61 // Set up pixel store parameters | |
| 62 gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, flipY); | |
| 63 gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, false); | |
| 64 gl.pixelStorei(gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, gl.NONE); | |
| 65 // Upload the image into the texture | |
| 66 if (useTexSubImage2D) { | |
| 67 // Initialize the texture to black first | |
| 68 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, image.width, image.height, 0, | |
| 69 gl.RGBA, gl.UNSIGNED_BYTE, null); | |
| 70 gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, gl.RGBA, gl.UNSIGNED_BYTE, image); | |
| 71 } else { | |
| 72 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, image); | |
| 73 } | |
| 74 | |
| 75 // Point the uniform sampler to texture unit 0 | |
| 76 gl.uniform1i(textureLoc, 0); | |
| 77 // Draw the triangles | |
| 78 wtu.drawQuad(gl, [0, 0, 0, 255]); | |
| 79 // Check a few pixels near the top and bottom and make sure they have | |
| 80 // the right color. | |
| 81 debug("Checking lower left corner"); | |
| 82 wtu.checkCanvasRect(gl, 4, 4, 2, 2, bottomColor, | |
| 83 "shouldBe " + bottomColor); | |
| 84 debug("Checking upper left corner"); | |
| 85 wtu.checkCanvasRect(gl, 4, gl.canvas.height - 8, 2, 2, topColor, | |
| 86 "shouldBe " + topColor); | |
| 87 } | |
| 88 | |
| 89 function runTestOnImage(image) { | |
| 90 runOneIteration(image, false, true, red, green); | |
| 91 runOneIteration(image, false, false, green, red); | |
| 92 runOneIteration(image, true, true, red, green); | |
| 93 runOneIteration(image, true, false, green, red); | |
| 94 } | |
| 95 | |
| 96 function runTest(image) | |
| 97 { | |
| 98 runTestOnImage(image); | |
| 99 | |
| 100 imgCanvas = document.createElement("canvas"); | |
| 101 imgCanvas.width = 1; | |
| 102 imgCanvas.height = 2; | |
| 103 var imgCtx = imgCanvas.getContext("2d"); | |
| 104 var imgData = imgCtx.createImageData(1, 2); | |
| 105 imgData.data[0] = red[0]; | |
| 106 imgData.data[1] = red[1]; | |
| 107 imgData.data[2] = red[2]; | |
| 108 imgData.data[3] = 255; | |
| 109 imgData.data[4] = green[0]; | |
| 110 imgData.data[5] = green[1]; | |
| 111 imgData.data[6] = green[2]; | |
| 112 imgData.data[7] = 255; | |
| 113 imgCtx.putImageData(imgData, 0, 0); | |
| 114 | |
| 115 // apparently Image is different than <img>. | |
| 116 var newImage = new Image(); | |
| 117 newImage.onload = function() { | |
| 118 runTest2(newImage); | |
| 119 }; | |
| 120 newImage.src = imgCanvas.toDataURL(); | |
| 121 } | |
| 122 | |
| 123 function runTest2(image) { | |
| 124 runTestOnImage(image); | |
| 125 | |
| 126 var newImage = document.createElement("img"); | |
| 127 newImage.onload = function() { | |
| 128 runTest3(newImage); | |
| 129 }; | |
| 130 newImage.src = imgCanvas.toDataURL(); | |
| 131 } | |
| 132 | |
| 133 function runTest3(image) { | |
| 134 runTestOnImage(image); | |
| 135 | |
| 136 glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors"); | |
| 137 finishTest(); | |
| 138 } | |
| 139 | |
| 140 </script> | |
| 141 </head> | |
| 142 <body onload="init()"> | |
| 143 <canvas id="example" width="32px" height="32px"></canvas> | |
| 144 <div id="description"></div> | |
| 145 <div id="console"></div> | |
| 146 </body> | |
| 147 </html> | |
| 148 | |
| 149 |
