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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 <title>WebGL TexParameter conformance test.</title> |
| 11 <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| 12 <script src="../../resources/js-test-pre.js"></script> |
| 13 <script src="../resources/webgl-test.js"> </script> |
| 14 </head> |
| 15 <body> |
| 16 <canvas id="example" width="24" height="24"></canvas> |
| 17 <canvas id="canvas2d" width="2" height="2"></canvas> |
| 18 <div id="description"></div> |
| 19 <div id="console"></div> |
| 20 <script id="vshader" type="x-shader/x-vertex"> |
| 21 uniform mat4 world; |
| 22 attribute vec3 vPosition; |
| 23 attribute vec2 texCoord0; |
| 24 varying vec2 texCoord; |
| 25 void main() |
| 26 { |
| 27 gl_Position = world * vec4(vPosition, 1); |
| 28 texCoord = texCoord0; |
| 29 } |
| 30 </script> |
| 31 |
| 32 <script id="fshader" type="x-shader/x-fragment"> |
| 33 precision mediump float; |
| 34 |
| 35 uniform sampler2D tex; |
| 36 varying vec2 texCoord; |
| 37 void main() |
| 38 { |
| 39 gl_FragColor = texture2D(tex, texCoord); |
| 40 } |
| 41 </script> |
| 42 |
| 43 <script> |
| 44 function init() |
| 45 { |
| 46 if (window.initNonKhronosFramework) { |
| 47 window.initNonKhronosFramework(false); |
| 48 } |
| 49 |
| 50 debug("Tests TexParameter works as expected"); |
| 51 debug(""); |
| 52 |
| 53 var canvas2d = document.getElementById("canvas2d"); |
| 54 var ctx2d = canvas2d.getContext("2d"); |
| 55 |
| 56 gl = initWebGL("example", "vshader", "fshader", [ "vPosition", "texCoord0"], |
| 57 [ 0, 0, 0, 1 ], 1); |
| 58 |
| 59 gl.disable(gl.DEPTH_TEST); |
| 60 gl.disable(gl.BLEND); |
| 61 |
| 62 var vertexObject = gl.createBuffer(); |
| 63 gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject); |
| 64 gl.bufferData( |
| 65 gl.ARRAY_BUFFER, |
| 66 new Float32Array([-1, 1,0, 1,1,0, -1,-1,0, |
| 67 -1,-1,0, 1,1,0, 1,-1,0]), |
| 68 gl.STATIC_DRAW); |
| 69 gl.enableVertexAttribArray(0); |
| 70 gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0); |
| 71 |
| 72 var vertexObject = gl.createBuffer(); |
| 73 gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject); |
| 74 gl.bufferData( |
| 75 gl.ARRAY_BUFFER, |
| 76 new Float32Array([ -2.5,-2.5, 3.5,-2.5, -2.5,3.5, |
| 77 -2.5,3.5, 3.5,-2.5, 3.5,3.5]), |
| 78 gl.STATIC_DRAW); |
| 79 gl.enableVertexAttribArray(1); |
| 80 gl.vertexAttribPointer(1, 2, gl.FLOAT, false, 0, 0); |
| 81 |
| 82 var colors = [ |
| 83 [0,255,128,255], |
| 84 [128,64,255,255], |
| 85 [192,255,64,255], |
| 86 [200,0,255,255]]; |
| 87 var texParam = [ |
| 88 gl.REPEAT, |
| 89 gl.CLAMP_TO_EDGE, |
| 90 gl.MIRRORED_REPEAT, |
| 91 gl.REPEAT]; |
| 92 |
| 93 // Make textures setting the texture parameters differently each time.. |
| 94 // This verifies both that the render correct AND that texture parameters |
| 95 // are associated with the textures, not with the texture-units. |
| 96 var textures = []; |
| 97 for (var ii = 0; ii < colors.length; ++ii) { |
| 98 var c = colors[ii]; |
| 99 ctx2d.fillStyle = |
| 100 "rgba(" + c[0] + "," + c[1] + "," + c[2] + "," + c[3] + ")"; |
| 101 ctx2d.fillRect(0, 0, 1, 1); |
| 102 var tex = gl.createTexture(); |
| 103 gl.bindTexture(gl.TEXTURE_2D, tex); |
| 104 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, canvas2d
); |
| 105 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST); |
| 106 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); |
| 107 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, texParam[ii]); |
| 108 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, texParam[ii]); |
| 109 textures[ii] = tex; |
| 110 } |
| 111 |
| 112 var textureLoc = gl.getUniformLocation(gl.program, "tex"); |
| 113 var worldLoc = gl.getUniformLocation(gl.program, "world"); |
| 114 |
| 115 gl.clearColor(1,1,1,1); |
| 116 gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); |
| 117 |
| 118 for (var ii = 0; ii < colors.length; ++ii) { |
| 119 var x = ii % 2; |
| 120 var y = Math.floor(ii / 2); |
| 121 gl.bindTexture(gl.TEXTURE_2D, textures[ii]); |
| 122 gl.uniformMatrix4fv( |
| 123 worldLoc, false, |
| 124 [0.5, 0, 0, 0, |
| 125 0, 0.5, 0, 0, |
| 126 0, 0, 1, 0, |
| 127 -0.5 + x, -0.5 + y, 0, 1]); |
| 128 gl.drawArrays(gl.TRIANGLES, 0, 6); |
| 129 } |
| 130 |
| 131 var buf = new Uint8Array(24 * 24 * 4); |
| 132 gl.readPixels(0, 0, 24, 24, gl.RGBA, gl.UNSIGNED_BYTE, buf); |
| 133 var passed = true; |
| 134 for (var ii = 0; ii < colors.length; ++ii) { |
| 135 var x = ii % 2; |
| 136 var y = Math.floor(ii / 2); |
| 137 var c = colors[ii]; |
| 138 for (var yy = 0; yy < 12; ++yy) { |
| 139 for (var xx = 0; xx < 12; ++xx) { |
| 140 var ec = [0,0,0,0]; |
| 141 switch (texParam[ii]) { |
| 142 case gl.REPEAT: |
| 143 if (xx % 2 == 1 && yy % 2 == 0) { |
| 144 ec = c; |
| 145 } |
| 146 break; |
| 147 case gl.CLAMP_TO_EDGE: |
| 148 if (xx < 6 && yy >= 6) { |
| 149 ec = c; |
| 150 } |
| 151 break; |
| 152 case gl.MIRRORED_REPEAT: |
| 153 if (xx % 4 < 2 && yy % 4 >= 2) { |
| 154 ec = c; |
| 155 } |
| 156 break; |
| 157 } |
| 158 var off = ((y * 12 + yy) * 24 + x * 12 + xx) * 4; |
| 159 if (buf[off + 0] != ec[0] || |
| 160 buf[off + 1] != ec[1] || |
| 161 buf[off + 2] != ec[2] || |
| 162 buf[off + 3] != ec[3]) { |
| 163 var msg = 'at (' + (x * 12 + xx) + ', ' + (y * 12 + yy) + |
| 164 ') expected: ' + |
| 165 ec[0] + ', ' + ec[1] + ', ' + ec[2] + ', ' + ec[3] + ' found: ' + |
| 166 buf[off + 0] + ', ' + |
| 167 buf[off + 1] + ', ' + |
| 168 buf[off + 2] + ', ' + |
| 169 buf[off + 3]; |
| 170 testFailed(msg); |
| 171 passed = false; |
| 172 } |
| 173 } |
| 174 } |
| 175 } |
| 176 if (passed) { |
| 177 testPassed("rendered as expected"); |
| 178 } |
| 179 } |
| 180 |
| 181 init(); |
| 182 successfullyParsed = true; |
| 183 </script> |
| 184 <script src="../../resources/js-test-post.js"></script> |
| 185 |
| 186 </body> |
| 187 </html> |
| 188 |
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Chromium Code Reviews
Issue 8342021:
Add webgl conformance tests r15841. (Closed)
Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/webgl/sdk/tests/