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| 1 <!-- |
| 2 |
| 3 /* |
| 4 ** Copyright (c) 2012 The Khronos Group Inc. |
| 5 ** |
| 6 ** Permission is hereby granted, free of charge, to any person obtaining a |
| 7 ** copy of this software and/or associated documentation files (the |
| 8 ** "Materials"), to deal in the Materials without restriction, including |
| 9 ** without limitation the rights to use, copy, modify, merge, publish, |
| 10 ** distribute, sublicense, and/or sell copies of the Materials, and to |
| 11 ** permit persons to whom the Materials are furnished to do so, subject to |
| 12 ** the following conditions: |
| 13 ** |
| 14 ** The above copyright notice and this permission notice shall be included |
| 15 ** in all copies or substantial portions of the Materials. |
| 16 ** |
| 17 ** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 18 ** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 19 ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 20 ** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| 21 ** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| 22 ** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| 23 ** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS. |
| 24 */ |
| 25 |
| 26 --> |
| 27 |
| 28 <!DOCTYPE html> |
| 29 <html> |
| 30 <head> |
| 31 <meta charset="utf-8"> |
| 32 <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| 33 <script src="../../resources/js-test-pre.js"></script> |
| 34 <script src="../resources/webgl-test.js"></script> |
| 35 <script id="vshader" type="x-shader/x-vertex"> |
| 36 attribute vec3 pos; |
| 37 attribute vec4 colorIn; |
| 38 varying vec4 color; |
| 39 |
| 40 void main() |
| 41 { |
| 42 color = colorIn; |
| 43 gl_Position = vec4(pos.xyz, 1.0); |
| 44 } |
| 45 </script> |
| 46 |
| 47 <script id="fshader" type="x-shader/x-fragment"> |
| 48 precision mediump float; |
| 49 |
| 50 varying vec4 color; |
| 51 |
| 52 void main() |
| 53 { |
| 54 gl_FragColor = color; |
| 55 } |
| 56 </script> |
| 57 |
| 58 <script> |
| 59 var successfullyParsed = false; |
| 60 |
| 61 // These four declarations need to be global for "shouldBe" to see them |
| 62 var webGL = null; |
| 63 var contextAttribs = null; |
| 64 var pixel = [0, 0, 0, 1]; |
| 65 var correctColor = null; |
| 66 |
| 67 function init() |
| 68 { |
| 69 if (window.initNonKhronosFramework) { |
| 70 window.initNonKhronosFramework(true); |
| 71 } |
| 72 |
| 73 description('Verify WebGLContextAttributes are working as specified, includi
ng alpha, depth, stencil, antialias, but not premultipliedAlpha'); |
| 74 |
| 75 runTest(); |
| 76 } |
| 77 |
| 78 function getWebGL(canvasWidth, canvasHeight, contextAttribs, clearColor, clearDe
pth, clearStencil) |
| 79 { |
| 80 var canvas = document.createElement("canvas"); |
| 81 if (!canvas) |
| 82 return null; |
| 83 canvas.width = canvasWidth; |
| 84 canvas.height = canvasHeight; |
| 85 |
| 86 var context = create3DContext(canvas, contextAttribs); |
| 87 if (!context) |
| 88 return null; |
| 89 |
| 90 context.program = createProgram(context, "vshader", "fshader", ["pos", "colo
rIn"]); |
| 91 if (!context.program) |
| 92 return null; |
| 93 |
| 94 context.useProgram(context.program); |
| 95 |
| 96 context.enable(context.DEPTH_TEST); |
| 97 context.enable(context.STENCIL_TEST); |
| 98 context.disable(context.BLEND); |
| 99 |
| 100 context.clearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3
]); |
| 101 context.clearDepth(clearDepth); |
| 102 context.clearStencil(clearStencil); |
| 103 context.clear(context.COLOR_BUFFER_BIT | context.DEPTH_BUFFER_BIT | context.
STENCIL_BUFFER_BIT); |
| 104 |
| 105 return context; |
| 106 } |
| 107 |
| 108 function drawAndReadPixel(gl, vertices, colors, x, y) |
| 109 { |
| 110 var colorOffset = vertices.byteLength; |
| 111 |
| 112 var vbo = gl.createBuffer(); |
| 113 gl.bindBuffer(gl.ARRAY_BUFFER, vbo); |
| 114 gl.bufferData(gl.ARRAY_BUFFER, colorOffset + colors.byteLength, gl.STATIC_DR
AW); |
| 115 gl.bufferSubData(gl.ARRAY_BUFFER, 0, vertices); |
| 116 gl.bufferSubData(gl.ARRAY_BUFFER, colorOffset, colors); |
| 117 |
| 118 gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0); |
| 119 gl.enableVertexAttribArray(0); |
| 120 gl.vertexAttribPointer(1, 4, gl.UNSIGNED_BYTE, true, 0, colorOffset); |
| 121 gl.enableVertexAttribArray(1); |
| 122 |
| 123 gl.drawArrays(gl.TRIANGLES, 0, vertices.length / 3); |
| 124 |
| 125 var buf = new Uint8Array(1 * 1 * 4); |
| 126 gl.readPixels(x, y, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, buf); |
| 127 return buf; |
| 128 } |
| 129 |
| 130 function testAlpha(alpha) |
| 131 { |
| 132 debug("Testing alpha = " + alpha); |
| 133 if (alpha) |
| 134 shouldBeNonNull("webGL = getWebGL(1, 1, { alpha: true, depth: false, ste
ncil: false, antialias: false }, [ 0, 0, 0, 0 ], 1, 0)"); |
| 135 else |
| 136 shouldBeNonNull("webGL = getWebGL(1, 1, { alpha: false, depth: false, st
encil: false, antialias: false }, [ 0, 0, 0, 0 ], 1, 0)"); |
| 137 shouldBeNonNull("contextAttribs = webGL.getContextAttributes()"); |
| 138 shouldBeTrue("contextAttribs.alpha == " + alpha); |
| 139 |
| 140 var buf = new Uint8Array(1 * 1 * 4); |
| 141 webGL.readPixels(0, 0, 1, 1, webGL.RGBA, webGL.UNSIGNED_BYTE, buf); |
| 142 pixel[0] = buf[0]; |
| 143 pixel[1] = buf[1]; |
| 144 pixel[2] = buf[2]; |
| 145 pixel[3] = buf[3]; |
| 146 correctColor = (contextAttribs.alpha ? [0, 0, 0, 0] : [0, 0, 0, 255]); |
| 147 shouldBe("pixel", "correctColor"); |
| 148 } |
| 149 |
| 150 function testDepth(depth) |
| 151 { |
| 152 debug("Testing depth = " + depth); |
| 153 if (depth) |
| 154 shouldBeNonNull("webGL = getWebGL(1, 1, { stencil: false, antialias: fal
se }, [ 0, 0, 0, 1 ], 1, 0)"); |
| 155 else |
| 156 shouldBeNonNull("webGL = getWebGL(1, 1, { depth: false, stencil: false,
antialias: false }, [ 0, 0, 0, 1 ], 1, 0)"); |
| 157 shouldBeNonNull("contextAttribs = webGL.getContextAttributes()"); |
| 158 |
| 159 webGL.depthFunc(webGL.NEVER); |
| 160 |
| 161 var vertices = new Float32Array([ |
| 162 1.0, 1.0, 0.0, |
| 163 -1.0, 1.0, 0.0, |
| 164 -1.0, -1.0, 0.0, |
| 165 1.0, 1.0, 0.0, |
| 166 -1.0, -1.0, 0.0, |
| 167 1.0, -1.0, 0.0]); |
| 168 var colors = new Uint8Array([ |
| 169 255, 0, 0, 255, |
| 170 255, 0, 0, 255, |
| 171 255, 0, 0, 255, |
| 172 255, 0, 0, 255, |
| 173 255, 0, 0, 255, |
| 174 255, 0, 0, 255]); |
| 175 |
| 176 var buf = drawAndReadPixel(webGL, vertices, colors, 0, 0); |
| 177 pixel[0] = buf[0]; |
| 178 pixel[1] = buf[1]; |
| 179 pixel[2] = buf[2]; |
| 180 pixel[3] = buf[3]; |
| 181 correctColor = (contextAttribs.depth ? [0, 0, 0, 255] : [255, 0, 0, 255]); |
| 182 shouldBe("pixel", "correctColor"); |
| 183 } |
| 184 |
| 185 function testStencilAndDepth(stencil, depth) |
| 186 { |
| 187 debug("Testing stencil = " + stencil + ", depth = " + depth); |
| 188 var creationString = |
| 189 "webGL = getWebGL(1, 1, { depth: " + depth + ", stencil: " + stencil + "
, antialias: false }, [ 0, 0, 0, 1 ], 1, 0)"; |
| 190 shouldBeNonNull(creationString); |
| 191 shouldBeNonNull("contextAttribs = webGL.getContextAttributes()"); |
| 192 if (!stencil && contextAttribs.stencil) { |
| 193 testFailed("WebGL implementation provided a stencil buffer when it shoul
d not have"); |
| 194 } |
| 195 if (!contextAttribs.stencil) |
| 196 stencil = false; |
| 197 |
| 198 webGL.depthFunc(webGL.ALWAYS); |
| 199 |
| 200 webGL.stencilFunc(webGL.NEVER, 1, 1); |
| 201 webGL.stencilOp(webGL.KEEP, webGL.KEEP, webGL.KEEP); |
| 202 |
| 203 var vertices = new Float32Array([ |
| 204 1.0, 1.0, 0.0, |
| 205 -1.0, 1.0, 0.0, |
| 206 -1.0, -1.0, 0.0, |
| 207 1.0, 1.0, 0.0, |
| 208 -1.0, -1.0, 0.0, |
| 209 1.0, -1.0, 0.0]); |
| 210 var colors = new Uint8Array([ |
| 211 255, 0, 0, 255, |
| 212 255, 0, 0, 255, |
| 213 255, 0, 0, 255, |
| 214 255, 0, 0, 255, |
| 215 255, 0, 0, 255, |
| 216 255, 0, 0, 255]); |
| 217 |
| 218 var buf = drawAndReadPixel(webGL, vertices, colors, 0, 0); |
| 219 pixel[0] = buf[0]; |
| 220 pixel[1] = buf[1]; |
| 221 pixel[2] = buf[2]; |
| 222 pixel[3] = buf[3]; |
| 223 correctColor = (stencil ? [0, 0, 0, 255] : [255, 0, 0, 255]); |
| 224 shouldBe("pixel", "correctColor"); |
| 225 } |
| 226 |
| 227 function testAntialias(antialias) |
| 228 { |
| 229 debug("Testing antialias = " + antialias); |
| 230 if (antialias) |
| 231 shouldBeNonNull("webGL = getWebGL(2, 2, { depth: false, stencil: false,
alpha: false, antialias: true }, [ 0, 0, 0, 1 ], 1, 0)"); |
| 232 else |
| 233 shouldBeNonNull("webGL = getWebGL(2, 2, { depth: false, stencil: false,
alpha: false, antialias: false }, [ 0, 0, 0, 1 ], 1, 0)"); |
| 234 shouldBeNonNull("contextAttribs = webGL.getContextAttributes()"); |
| 235 |
| 236 var vertices = new Float32Array([ |
| 237 1.0, 1.0, 0.0, |
| 238 -1.0, 1.0, 0.0, |
| 239 -1.0, -1.0, 0.0]); |
| 240 var colors = new Uint8Array([ |
| 241 255, 0, 0, 255, |
| 242 255, 0, 0, 255, |
| 243 255, 0, 0, 255]); |
| 244 var buf = drawAndReadPixel(webGL, vertices, colors, 0, 0); |
| 245 pixel[0] = buf[0]; |
| 246 shouldBe("pixel[0] != 255 && pixel[0] != 0", "contextAttribs.antialias"); |
| 247 } |
| 248 |
| 249 function runTest() |
| 250 { |
| 251 |
| 252 testAlpha(true); |
| 253 testAlpha(false); |
| 254 testDepth(true); |
| 255 testDepth(false); |
| 256 testStencilAndDepth(true, false); |
| 257 testStencilAndDepth(false, false); |
| 258 testStencilAndDepth(true, true); |
| 259 testStencilAndDepth(false, true); |
| 260 testAntialias(true); |
| 261 testAntialias(false); |
| 262 |
| 263 finishTest(); |
| 264 } |
| 265 |
| 266 </script> |
| 267 </head> |
| 268 <body onload="init()"> |
| 269 <div id="description"></div> |
| 270 <div id="console"></div> |
| 271 </body> |
| 272 </html> |
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Chromium Code Reviews
Issue 10399113:
Roll webgl conformance tests to r17874: part 2, adding r17874 (Closed)
Base URL: svn://chrome-svn/chrome/trunk/deps/