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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 <title>WebGL ReadPixels conformance test.</title> |
| 33 <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| 34 <script src="../../resources/js-test-pre.js"></script> |
| 35 <script src="../resources/webgl-test.js"> </script> |
| 36 <script src="../resources/webgl-test-utils.js"> </script> |
| 37 </head> |
| 38 <body> |
| 39 <canvas id="example" width="200" height="200" style="width: 20px; height: 20px">
</canvas> |
| 40 <div id="description"></div> |
| 41 <div id="console"></div> |
| 42 <script> |
| 43 description("Checks that ReadPixels works as expected."); |
| 44 |
| 45 var wtu = WebGLTestUtils; |
| 46 var canvas = document.getElementById("example"); |
| 47 var gl = create3DContext(canvas); |
| 48 |
| 49 if (window.initNonKhronosFramework) { |
| 50 window.initNonKhronosFramework(true); |
| 51 } |
| 52 |
| 53 var actual; |
| 54 var expected; |
| 55 var width = 2; |
| 56 var height = 2; |
| 57 var continueTestFunc = continueTestPart1; |
| 58 |
| 59 gl.clearColor(1, 1, 1, 1); |
| 60 gl.clear(gl.COLOR_BUFFER_BIT); |
| 61 |
| 62 // Resize the canvas to 2x2. This is an attempt to get stuff in the backbuffer. |
| 63 // that shouldn't be there. |
| 64 canvas.addEventListener("webglcontextlost", function(e) { e.preventDefault(); },
false); |
| 65 canvas.addEventListener("webglcontextrestored", continueTestAfterContextRestored
, false); |
| 66 canvas.width = width; |
| 67 canvas.height = height; |
| 68 if (gl.getError() != gl.CONTEXT_LOST_WEBGL) { |
| 69 continueTestPart1(); |
| 70 } |
| 71 |
| 72 function continueTestAfterContextRestored() { |
| 73 window.gl = create3DContext(canvas); |
| 74 var func = continueTestFunc; |
| 75 window.continueTestFunc = function() { testFailed("should not be here"); }; |
| 76 func(); |
| 77 } |
| 78 |
| 79 function continueTestPart1() { |
| 80 gl.clearColor(0.5, 0.7, 1.0, 1); |
| 81 gl.clear(gl.COLOR_BUFFER_BIT); |
| 82 |
| 83 var innerColor = [0.5, 0.7, 1.0, 1]; |
| 84 var outerColor = [0, 0, 0, 0]; |
| 85 |
| 86 var tests = [ |
| 87 { msg: 'in range', checkColor: innerColor, x: 0, y: 0, |
| 88 oneColor: innerColor, oneX: 0, oneY: 0}, |
| 89 { msg: 'off top left', checkColor: outerColor, x: -1, y: -1, |
| 90 oneColor: innerColor, oneX: 1, oneY: 1}, |
| 91 { msg: 'off bottom right', checkColor: outerColor, x: 1, y: 1, |
| 92 oneColor: innerColor, oneX: 0, oneY: 0}, |
| 93 { msg: 'completely off top ', checkColor: outerColor, x: 0, y: -2, |
| 94 oneColor: outerColor, oneX: 0, oneY: 0}, |
| 95 { msg: 'completely off bottom', checkColor: outerColor, x: 0, y: 2, |
| 96 oneColor: outerColor, oneX: 0, oneY: 0}, |
| 97 { msg: 'completely off left', checkColor: outerColor, x: -2, y: 0, |
| 98 oneColor: outerColor, oneX: 0, oneY: 0}, |
| 99 { msg: 'completeley off right', checkColor: outerColor, x: 2, y: 0, |
| 100 oneColor: outerColor, oneX: 0, oneY: 0} |
| 101 ]; |
| 102 |
| 103 for (var tt = 0; tt < tests.length; ++tt) { |
| 104 var test = tests[tt]; |
| 105 debug(""); |
| 106 debug("checking: " + test.msg); |
| 107 checkBuffer(test.checkColor, test.x, test.y, |
| 108 test.oneColor, test.oneX, test.oneY); |
| 109 } |
| 110 |
| 111 glErrorShouldBe(gl, gl.NO_ERROR, "there should be no GL errors"); |
| 112 |
| 113 function checkBuffer(checkColor, x, y, oneColor, oneX, oneY) { |
| 114 var buf = new Uint8Array(width * height * 4); |
| 115 gl.readPixels(x, y, width, height, gl.RGBA, gl.UNSIGNED_BYTE, buf); |
| 116 for (var yy = 0; yy < height; ++yy) { |
| 117 for (var xx = 0; xx < width; ++xx) { |
| 118 var offset = (yy * width + xx) * 4; |
| 119 var expectedColors = (oneX == xx && oneY == yy) ? oneColor : checkColor; |
| 120 for (var cc = 0; cc < 4; ++cc) { |
| 121 var expectedColor = expectedColors[cc] * 255; |
| 122 var color = buf[offset + cc]; |
| 123 var diff = Math.abs(expectedColor - color); |
| 124 assertMsg(diff < 3, |
| 125 "color pixel at " + xx + ", " + yy + " should be about " + e
xpectedColor); |
| 126 } |
| 127 } |
| 128 } |
| 129 } |
| 130 |
| 131 var badFormats = [ |
| 132 { |
| 133 format: gl.RGB, |
| 134 type: gl.UNSIGNED_BYTE, |
| 135 dest: new Uint8Array(3), |
| 136 error: gl.INVALID_OPERATION |
| 137 }, |
| 138 { |
| 139 format: gl.RGB, |
| 140 type: gl.UNSIGNED_SHORT_5_6_5, |
| 141 dest: new Uint8Array(3), |
| 142 error: gl.INVALID_OPERATION |
| 143 }, |
| 144 { |
| 145 format: gl.RGBA, |
| 146 type: gl.UNSIGNED_SHORT_5_5_5_1, |
| 147 dest: new Uint16Array(1), |
| 148 error: gl.INVALID_OPERATION |
| 149 }, |
| 150 { |
| 151 format: gl.RGBA, |
| 152 type: gl.UNSIGNED_SHORT_4_4_4_4, |
| 153 dest: new Uint16Array(1), |
| 154 error: gl.INVALID_OPERATION |
| 155 }, |
| 156 { |
| 157 format: gl.ALPHA, |
| 158 type: gl.UNSIGNED_BYTE, |
| 159 dest: new Uint8Array(1), |
| 160 error: gl.INVALID_OPERATION |
| 161 }, |
| 162 { |
| 163 format: gl.LUMINANCE, |
| 164 type: gl.UNSIGNED_BYTE, |
| 165 dest: new Uint8Array(1), |
| 166 error: gl.INVALID_ENUM |
| 167 }, |
| 168 { |
| 169 format: gl.LUMINANCE_ALPHA, |
| 170 type: gl.UNSIGNED_BYTE, |
| 171 dest: new Uint8Array(2), |
| 172 error: gl.INVALID_ENUM |
| 173 } |
| 174 ]; |
| 175 debug(""); |
| 176 debug("check disallowed formats"); |
| 177 for (var tt = 0; tt < badFormats.length; ++ tt) { |
| 178 var info = badFormats[tt] |
| 179 var format = info.format; |
| 180 var type = info.type; |
| 181 var dest = info.dest; |
| 182 var error = info.error; |
| 183 gl.readPixels(0, 0, 1, 1, format, type, dest); |
| 184 // note that the GL error is INVALID_OPERATION if both format and type are i
nvalid, but |
| 185 // INVALID_ENUM if only one is. |
| 186 glErrorShouldBe( |
| 187 gl, error, |
| 188 "Should not be able to read as " + wtu.glEnumToString(gl, format) + |
| 189 " / " + wtu.glEnumToString(gl, type)); |
| 190 } |
| 191 |
| 192 debug(""); |
| 193 debug("check reading with lots of drawing"); |
| 194 continueTestFunc = continueTestPart2; |
| 195 width = 1024; |
| 196 height = 1024; |
| 197 canvas.width = width; |
| 198 canvas.height = height; |
| 199 if (gl.getError() != gl.CONTEXT_LOST_WEBGL) { |
| 200 continueTestPart2(); |
| 201 } |
| 202 } |
| 203 |
| 204 function continueTestPart2() { |
| 205 gl.viewport(0, 0, 1024, 1024); |
| 206 var program = wtu.setupTexturedQuad(gl); |
| 207 var loc = gl.getUniformLocation(program, "tex"); |
| 208 gl.disable(gl.BLEND); |
| 209 gl.disable(gl.DEPTH_TEST); |
| 210 var colors = [[255, 0, 0, 255], [0, 255, 0, 255], [0, 0, 255, 255]]; |
| 211 var textures = []; |
| 212 var results = []; |
| 213 for (var ii = 0; ii < colors.length; ++ii) { |
| 214 gl.activeTexture(gl.TEXTURE0 + ii); |
| 215 var tex = gl.createTexture(); |
| 216 wtu.fillTexture(gl, tex, 1, 1, colors[ii]); |
| 217 textures.push(tex); |
| 218 } |
| 219 for (var ii = 0; ii < colors.length; ++ii) { |
| 220 for (var jj = 0; jj < 300 + ii + 1; ++jj) { |
| 221 gl.uniform1i(loc, jj % 3); |
| 222 gl.drawArrays(gl.TRIANGLES, 0, 6); |
| 223 } |
| 224 var buf = new Uint8Array(4); |
| 225 gl.readPixels(512, 512, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, buf); |
| 226 results.push(buf); |
| 227 for (var kk = 0; kk < 99; ++kk) { |
| 228 gl.uniform1i(loc, (jj + kk) % 3); |
| 229 gl.drawArrays(gl.TRIANGLES, 0, 6); |
| 230 } |
| 231 } |
| 232 for (var ii = 0; ii < colors.length; ++ii) { |
| 233 var buf = results[ii]; |
| 234 var color = colors[ii]; |
| 235 actual = [buf[0], buf[1], buf[2], buf[3]]; |
| 236 expected = [color[0], color[1], color[2], color[3]]; |
| 237 shouldBe("actual", "expected"); |
| 238 } |
| 239 glErrorShouldBe(gl, gl.NO_ERROR, "there should be no GL errors"); |
| 240 |
| 241 debug(""); |
| 242 finishTest(); |
| 243 } |
| 244 </script> |
| 245 </body> |
| 246 </html> |
| 247 |
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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/