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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 id="vshader" type="x-shader/x-vertex"> |
| 14 attribute vec3 pos; |
| 15 attribute vec4 colorIn; |
| 16 varying vec4 color; |
| 17 |
| 18 void main() |
| 19 { |
| 20 color = colorIn; |
| 21 gl_Position = vec4(pos.xyz, 1.0); |
| 22 } |
| 23 </script> |
| 24 |
| 25 <script id="fshader" type="x-shader/x-fragment"> |
| 26 precision mediump float; |
| 27 |
| 28 varying vec4 color; |
| 29 |
| 30 void main() |
| 31 { |
| 32 gl_FragColor = color; |
| 33 } |
| 34 </script> |
| 35 |
| 36 <script> |
| 37 var successfullyParsed = false; |
| 38 |
| 39 // These four declarations need to be global for "shouldBe" to see them |
| 40 var webGL = null; |
| 41 var contextAttribs = null; |
| 42 var pixel = [0, 0, 0, 1]; |
| 43 var correctColor = null; |
| 44 var value; |
| 45 |
| 46 function init() |
| 47 { |
| 48 if (window.initNonKhronosFramework) { |
| 49 window.initNonKhronosFramework(true); |
| 50 } |
| 51 |
| 52 description('Verify WebGLContextAttributes are working as specified, includi
ng alpha, depth, stencil, antialias, but not premultipliedAlpha'); |
| 53 |
| 54 runTest(); |
| 55 } |
| 56 |
| 57 function getWebGL(canvasWidth, canvasHeight, contextAttribs, clearColor, clearDe
pth, clearStencil) |
| 58 { |
| 59 var canvas = document.createElement("canvas"); |
| 60 if (!canvas) |
| 61 return null; |
| 62 canvas.width = canvasWidth; |
| 63 canvas.height = canvasHeight; |
| 64 |
| 65 var context = create3DContext(canvas, contextAttribs); |
| 66 if (!context) |
| 67 return null; |
| 68 |
| 69 context.program = createProgram(context, "vshader", "fshader", ["pos", "colo
rIn"]); |
| 70 if (!context.program) |
| 71 return null; |
| 72 |
| 73 context.useProgram(context.program); |
| 74 |
| 75 context.enable(context.DEPTH_TEST); |
| 76 context.enable(context.STENCIL_TEST); |
| 77 context.disable(context.BLEND); |
| 78 |
| 79 context.clearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3
]); |
| 80 context.clearDepth(clearDepth); |
| 81 context.clearStencil(clearStencil); |
| 82 context.clear(context.COLOR_BUFFER_BIT | context.DEPTH_BUFFER_BIT | context.
STENCIL_BUFFER_BIT); |
| 83 |
| 84 return context; |
| 85 } |
| 86 |
| 87 function drawAndReadPixel(gl, vertices, colors, x, y) |
| 88 { |
| 89 var colorOffset = vertices.byteLength; |
| 90 |
| 91 var vbo = gl.createBuffer(); |
| 92 gl.bindBuffer(gl.ARRAY_BUFFER, vbo); |
| 93 gl.bufferData(gl.ARRAY_BUFFER, colorOffset + colors.byteLength, gl.STATIC_DR
AW); |
| 94 gl.bufferSubData(gl.ARRAY_BUFFER, 0, vertices); |
| 95 gl.bufferSubData(gl.ARRAY_BUFFER, colorOffset, colors); |
| 96 |
| 97 gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0); |
| 98 gl.enableVertexAttribArray(0); |
| 99 gl.vertexAttribPointer(1, 4, gl.UNSIGNED_BYTE, true, 0, colorOffset); |
| 100 gl.enableVertexAttribArray(1); |
| 101 |
| 102 gl.drawArrays(gl.TRIANGLES, 0, vertices.length / 3); |
| 103 |
| 104 var buf = new Uint8Array(1 * 1 * 4); |
| 105 gl.readPixels(x, y, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, buf); |
| 106 return buf; |
| 107 } |
| 108 |
| 109 function testAlpha(alpha) |
| 110 { |
| 111 debug("Testing alpha = " + alpha); |
| 112 if (alpha) |
| 113 shouldBeNonNull("webGL = getWebGL(1, 1, { alpha: true, depth: false, ste
ncil: false, antialias: false }, [ 0, 0, 0, 0 ], 1, 0)"); |
| 114 else |
| 115 shouldBeNonNull("webGL = getWebGL(1, 1, { alpha: false, depth: false, st
encil: false, antialias: false }, [ 0, 0, 0, 0 ], 1, 0)"); |
| 116 shouldBeNonNull("contextAttribs = webGL.getContextAttributes()"); |
| 117 shouldBeTrue("contextAttribs.alpha == " + alpha); |
| 118 |
| 119 var buf = new Uint8Array(1 * 1 * 4); |
| 120 webGL.readPixels(0, 0, 1, 1, webGL.RGBA, webGL.UNSIGNED_BYTE, buf); |
| 121 pixel[0] = buf[0]; |
| 122 pixel[1] = buf[1]; |
| 123 pixel[2] = buf[2]; |
| 124 pixel[3] = buf[3]; |
| 125 correctColor = (contextAttribs.alpha ? [0, 0, 0, 0] : [0, 0, 0, 255]); |
| 126 shouldBe("pixel", "correctColor"); |
| 127 } |
| 128 |
| 129 function testDepth(depth) |
| 130 { |
| 131 debug("Testing depth = " + depth); |
| 132 if (depth) |
| 133 shouldBeNonNull("webGL = getWebGL(1, 1, { stencil: false, antialias: fal
se }, [ 0, 0, 0, 1 ], 1, 0)"); |
| 134 else |
| 135 shouldBeNonNull("webGL = getWebGL(1, 1, { depth: false, stencil: false,
antialias: false }, [ 0, 0, 0, 1 ], 1, 0)"); |
| 136 shouldBeNonNull("contextAttribs = webGL.getContextAttributes()"); |
| 137 |
| 138 webGL.depthFunc(webGL.NEVER); |
| 139 |
| 140 var vertices = new Float32Array([ |
| 141 1.0, 1.0, 0.0, |
| 142 -1.0, 1.0, 0.0, |
| 143 -1.0, -1.0, 0.0, |
| 144 1.0, 1.0, 0.0, |
| 145 -1.0, -1.0, 0.0, |
| 146 1.0, -1.0, 0.0]); |
| 147 var colors = new Uint8Array([ |
| 148 255, 0, 0, 255, |
| 149 255, 0, 0, 255, |
| 150 255, 0, 0, 255, |
| 151 255, 0, 0, 255, |
| 152 255, 0, 0, 255, |
| 153 255, 0, 0, 255]); |
| 154 |
| 155 var buf = drawAndReadPixel(webGL, vertices, colors, 0, 0); |
| 156 pixel[0] = buf[0]; |
| 157 pixel[1] = buf[1]; |
| 158 pixel[2] = buf[2]; |
| 159 pixel[3] = buf[3]; |
| 160 correctColor = (contextAttribs.depth ? [0, 0, 0, 255] : [255, 0, 0, 255]); |
| 161 shouldBe("pixel", "correctColor"); |
| 162 } |
| 163 |
| 164 function testStencil(stencil) |
| 165 { |
| 166 debug("Testing stencil = " + stencil); |
| 167 if (stencil) |
| 168 shouldBeNonNull("webGL = getWebGL(1, 1, { depth: false, stencil: true, a
ntialias: false }, [ 0, 0, 0, 1 ], 1, 0)"); |
| 169 else |
| 170 shouldBeNonNull("webGL = getWebGL(1, 1, { depth: false, stencil: false,
antialias: false }, [ 0, 0, 0, 1 ], 1, 0)"); |
| 171 shouldBeNonNull("contextAttribs = webGL.getContextAttributes()"); |
| 172 |
| 173 webGL.depthFunc(webGL.ALWAYS); |
| 174 |
| 175 webGL.stencilFunc(webGL.NEVER, 1, 1); |
| 176 webGL.stencilOp(webGL.KEEP, webGL.KEEP, webGL.KEEP); |
| 177 |
| 178 var vertices = new Float32Array([ |
| 179 1.0, 1.0, 0.0, |
| 180 -1.0, 1.0, 0.0, |
| 181 -1.0, -1.0, 0.0, |
| 182 1.0, 1.0, 0.0, |
| 183 -1.0, -1.0, 0.0, |
| 184 1.0, -1.0, 0.0]); |
| 185 var colors = new Uint8Array([ |
| 186 255, 0, 0, 255, |
| 187 255, 0, 0, 255, |
| 188 255, 0, 0, 255, |
| 189 255, 0, 0, 255, |
| 190 255, 0, 0, 255, |
| 191 255, 0, 0, 255]); |
| 192 |
| 193 var buf = drawAndReadPixel(webGL, vertices, colors, 0, 0); |
| 194 pixel[0] = buf[0]; |
| 195 pixel[1] = buf[1]; |
| 196 pixel[2] = buf[2]; |
| 197 pixel[3] = buf[3]; |
| 198 correctColor = (contextAttribs.stencil ? [0, 0, 0, 255] : [255, 0, 0, 255]); |
| 199 shouldBe("pixel", "correctColor"); |
| 200 } |
| 201 |
| 202 function testAntialias(antialias) |
| 203 { |
| 204 debug("Testing antialias = " + antialias); |
| 205 if (antialias) |
| 206 shouldBeNonNull("webGL = getWebGL(2, 2, { depth: false, stencil: false,
alpha: false, antialias: true }, [ 0, 0, 0, 1 ], 1, 0)"); |
| 207 else |
| 208 shouldBeNonNull("webGL = getWebGL(2, 2, { depth: false, stencil: false,
alpha: false, antialias: false }, [ 0, 0, 0, 1 ], 1, 0)"); |
| 209 shouldBeNonNull("contextAttribs = webGL.getContextAttributes()"); |
| 210 |
| 211 var vertices = new Float32Array([ |
| 212 1.0, 1.0, 0.0, |
| 213 -1.0, 1.0, 0.0, |
| 214 -1.0, -1.0, 0.0]); |
| 215 var colors = new Uint8Array([ |
| 216 255, 0, 0, 255, |
| 217 255, 0, 0, 255, |
| 218 255, 0, 0, 255]); |
| 219 var buf = drawAndReadPixel(webGL, vertices, colors, 0, 0); |
| 220 pixel[0] = buf[0]; |
| 221 shouldBe("pixel[0] != 255 && pixel[0] != 0", "contextAttribs.antialias"); |
| 222 } |
| 223 |
| 224 function runTest() |
| 225 { |
| 226 |
| 227 testAlpha(true); |
| 228 testAlpha(false); |
| 229 testDepth(true); |
| 230 testDepth(false); |
| 231 testStencil(true); |
| 232 testStencil(false); |
| 233 testAntialias(true); |
| 234 testAntialias(false); |
| 235 |
| 236 finishTest() |
| 237 } |
| 238 |
| 239 </script> |
| 240 </head> |
| 241 <body onload="init()"> |
| 242 <div id="description"></div> |
| 243 <div id="console"></div> |
| 244 </body> |
| 245 </html> |
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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/