The Tor Browser / file comparison
comparison: content/canvas/test/webgl-conformance/conformance/misc/uninitialized-test.html
content/canvas/test/webgl-conformance/conformance/misc/uninitialized-test.html
- branch
- TOR_BUG_3246
- changeset 4
- fc2d59ddac77
equal
deleted
inserted
replaced
| -1:000000000000 | 0:445723faa126 |
|---|---|
| 1 <!DOCTYPE html> | |
| 2 <html> | |
| 3 <head> | |
| 4 <meta charset="utf-8"> | |
| 5 <title>WebGL Uninitialized GL Resources Tests</title> | |
| 6 <link rel="stylesheet" href="../../resources/js-test-style.css"/> | |
| 7 <script src="../../resources/js-test-pre.js"></script> | |
| 8 <script src="../resources/webgl-test.js"></script> | |
| 9 <script src="../resources/webgl-test-utils.js"></script> | |
| 10 </head> | |
| 11 <body> | |
| 12 <div id="description"></div> | |
| 13 <div id="console"></div> | |
| 14 <canvas id="canvas" width="2" height="2"> </canvas> | |
| 15 <script> | |
| 16 description("Tests to check user code cannot access uninitialized data from GL resources."); | |
| 17 | |
| 18 var wtu = WebGLTestUtils; | |
| 19 var gl = wtu.create3DContext("canvas"); | |
| 20 if (!gl) | |
| 21 testFailed("Context created."); | |
| 22 else | |
| 23 testPassed("Context created."); | |
| 24 | |
| 25 function setupTexture(texWidth, texHeight) { | |
| 26 var texture = gl.createTexture(); | |
| 27 gl.bindTexture(gl.TEXTURE_2D, texture); | |
| 28 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, texWidth, texHeight, 0, gl.RGBA, gl.UNSIGNED_BYTE, null); | |
| 29 | |
| 30 // this can be quite undeterministic so to improve odds of seeing uninitialized data write bits | |
| 31 // into tex then delete texture then re-create one with same characteristics (driver will likely reuse mem) | |
| 32 // with this trick on r59046 WebKit/OSX I get FAIL 100% of the time instead of ~15% of the time. | |
| 33 | |
| 34 var badData = new Uint8Array(texWidth * texHeight * 4); | |
| 35 for (var i = 0; i < badData.length; ++i) | |
| 36 badData[i] = i % 255; | |
| 37 | |
| 38 gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, texWidth, texHeight, gl.RGBA, gl.UNSIGNED_BYTE, badData); | |
| 39 gl.finish(); // make sure it has been uploaded | |
| 40 | |
| 41 gl.deleteTexture(texture); | |
| 42 gl.finish(); // make sure it has been deleted | |
| 43 | |
| 44 var texture = gl.createTexture(); | |
| 45 gl.bindTexture(gl.TEXTURE_2D, texture); | |
| 46 return texture; | |
| 47 } | |
| 48 | |
| 49 function checkNonZeroPixels(texture, texWidth, texHeight, skipX, skipY, skipWidth, skipHeight, skipR, skipG, skipB, skipA) { | |
| 50 gl.bindTexture(gl.TEXTURE_2D, null); | |
| 51 var fb = gl.createFramebuffer(); | |
| 52 gl.bindFramebuffer(gl.FRAMEBUFFER, fb); | |
| 53 gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 0); | |
| 54 shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE"); | |
| 55 | |
| 56 var data = new Uint8Array(texWidth * texHeight * 4); | |
| 57 gl.readPixels(0, 0, texWidth, texHeight, gl.RGBA, gl.UNSIGNED_BYTE, data); | |
| 58 | |
| 59 var k = 0; | |
| 60 for (var y = 0; y < texHeight; ++y) { | |
| 61 for (var x = 0; x < texWidth; ++x) { | |
| 62 var index = (y * texWidth + x) * 4; | |
| 63 if (x >= skipX && x < skipX + skipWidth && y >= skipY && y < skipY + skipHeight) { | |
| 64 if (data[index] != skipR || data[index + 1] != skipG || data[index + 2] != skipB || data[index + 3] != skipA) { | |
| 65 testFailed("non-zero pixel values are wrong at (" + x + ", " + y + "), data was (" + | |
| 66 data[index] + "," + data[index + 1] + "," + data[index + 2] + "," + data[index + 3] + | |
| 67 ") should have been (" + skipR + "," + skipG + "," + skipB + "," + skipA + ")"); | |
| 68 return; | |
| 69 } | |
| 70 } else { | |
| 71 for (var i = 0; i < 4; ++i) { | |
| 72 if (data[index + i] != 0) | |
| 73 k++; | |
| 74 } | |
| 75 } | |
| 76 } | |
| 77 } | |
| 78 if (k) { | |
| 79 testFailed("Found " + k + " non-zero bytes"); | |
| 80 } else { | |
| 81 testPassed("All data initialized"); | |
| 82 } | |
| 83 } | |
| 84 | |
| 85 var width = 512; | |
| 86 var height = 512; | |
| 87 | |
| 88 debug(""); | |
| 89 debug("Reading an uninitialized texture (texImage2D) should succeed with all bytes set to 0."); | |
| 90 | |
| 91 var tex = setupTexture(width, height); | |
| 92 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null); | |
| 93 checkNonZeroPixels(tex, width, height, 0, 0, 0, 0, 0, 0, 0, 0); | |
| 94 gl.deleteTexture(tex); | |
| 95 gl.finish(); | |
| 96 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 97 | |
| 98 debug(""); | |
| 99 debug("Reading an uninitialized portion of a texture (copyTexImage2D) should succeed with all bytes set to 0."); | |
| 100 | |
| 101 var tex = setupTexture(width, height); | |
| 102 var fbo = gl.createFramebuffer(); | |
| 103 gl.bindFramebuffer(gl.FRAMEBUFFER, fbo); | |
| 104 var rbo = gl.createRenderbuffer(); | |
| 105 gl.bindRenderbuffer(gl.RENDERBUFFER, rbo); | |
| 106 var fboWidth = 16; | |
| 107 var fboHeight = 16; | |
| 108 gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fboWidth, fboHeight); | |
| 109 gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, rbo); | |
| 110 shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE"); | |
| 111 gl.clearColor(1.0, 0.0, 0.0, 1.0); | |
| 112 gl.clear(gl.COLOR_BUFFER_BIT); | |
| 113 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 114 gl.copyTexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 0, 0, width, height, 0); | |
| 115 checkNonZeroPixels(tex, width, height, 0, 0, fboWidth, fboHeight, 255, 0, 0, 255); | |
| 116 gl.deleteTexture(tex); | |
| 117 gl.finish(); | |
| 118 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 119 | |
| 120 debug(""); | |
| 121 debug("Reading an uninitialized portion of a texture (copyTexImage2D with negative x and y) should succeed with all bytes set to 0."); | |
| 122 | |
| 123 var tex = setupTexture(width, height); | |
| 124 var fbo = gl.createFramebuffer(); | |
| 125 gl.bindFramebuffer(gl.FRAMEBUFFER, fbo); | |
| 126 var rbo = gl.createRenderbuffer(); | |
| 127 gl.bindRenderbuffer(gl.RENDERBUFFER, rbo); | |
| 128 var fboWidth = 16; | |
| 129 var fboHeight = 16; | |
| 130 gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fboWidth, fboHeight); | |
| 131 gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, rbo); | |
| 132 shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE"); | |
| 133 gl.clearColor(1.0, 0.0, 0.0, 1.0); | |
| 134 gl.clear(gl.COLOR_BUFFER_BIT); | |
| 135 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 136 var x = -8; | |
| 137 var y = -8; | |
| 138 gl.copyTexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, x, y, width, height, 0); | |
| 139 checkNonZeroPixels(tex, width, height, -x, -y, fboWidth, fboHeight, 255, 0, 0, 255); | |
| 140 gl.deleteTexture(tex); | |
| 141 gl.finish(); | |
| 142 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 143 | |
| 144 debug(""); | |
| 145 debug("Reading an uninitialized portion of a texture (copyTexImage2D from WebGL internal fbo) should succeed with all bytes set to 0."); | |
| 146 | |
| 147 var tex = setupTexture(width, height); | |
| 148 gl.bindFramebuffer(gl.FRAMEBUFFER, null); | |
| 149 gl.clearColor(0.0, 1.0, 0.0, 0.0); | |
| 150 gl.clear(gl.COLOR_BUFFER_BIT); | |
| 151 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 152 gl.copyTexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 0, 0, width, height, 0); | |
| 153 checkNonZeroPixels(tex, width, height, 0, 0, gl.canvas.width, gl.canvas.height, 0, 255, 0, 0); | |
| 154 gl.deleteTexture(tex); | |
| 155 gl.finish(); | |
| 156 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 157 | |
| 158 //TODO: uninitialized vertex array buffer | |
| 159 //TODO: uninitialized vertex elements buffer | |
| 160 //TODO: uninitialized framebuffer? (implementations would need to do a GL clear at first binding?) | |
| 161 //TODO: uninitialized renderbuffer? (implementations would need to do a GL clear at first binding?) | |
| 162 //TODO: uninitialized uniform arrays? | |
| 163 | |
| 164 debug(""); | |
| 165 successfullyParsed = true; | |
| 166 </script> | |
| 167 <script>finishTest();</script> | |
| 168 </body> | |
| 169 </html> | |
| 170 |
