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| 1 <!doctype html> | |
| 2 <html> | |
| 3 <head> | |
| 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> | |
| 5 <title>WebGL Uninitialized GL Resources Tests</title> | |
| 6 <script src="../../../resources/js-test.js"></script> | |
| 7 <script src="resources/webgl-test.js"></script> | |
| 8 </head> | |
| 9 <body> | |
| 10 <div id="description"></div> | |
| 11 <div id="console"></div> | |
| 12 <canvas id="canvas" width="2" height="2"> </canvas> | |
| 13 <script> | |
| 14 description("Tests to check user code cannot access uninitialized data from GL r
esources."); | |
| 15 | |
| 16 var canvas = document.getElementById("canvas"); | |
| 17 var gl = create3DContext(canvas); | |
| 18 if (!gl) | |
| 19 testFailed("Context created."); | |
| 20 else | |
| 21 testPassed("Context created."); | |
| 22 | |
| 23 function setupTexture(texWidth, texHeight) { | |
| 24 var texture = gl.createTexture(); | |
| 25 gl.bindTexture(gl.TEXTURE_2D, texture); | |
| 26 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, texWidth, texHeight, 0, gl.RGBA, gl
.UNSIGNED_BYTE, null); | |
| 27 | |
| 28 // this can be quite undeterministic so to improve odds of seeing uninitiali
zed data write bits | |
| 29 // into tex then delete texture then re-create one with same characteristics
(driver will likely reuse mem) | |
| 30 // with this trick on r59046 WebKit/OSX I get FAIL 100% of the time instead
of ~15% of the time. | |
| 31 | |
| 32 var badData = new Uint8Array(texWidth * texHeight * 4); | |
| 33 for (var i = 0; i < badData.length; ++i) | |
| 34 badData[i] = i % 255; | |
| 35 | |
| 36 gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, texWidth, texHeight, gl.RGBA, gl.UN
SIGNED_BYTE, badData); | |
| 37 gl.finish(); // make sure it has been uploaded | |
| 38 | |
| 39 gl.deleteTexture(texture); | |
| 40 gl.finish(); // make sure it has been deleted | |
| 41 | |
| 42 var texture = gl.createTexture(); | |
| 43 gl.bindTexture(gl.TEXTURE_2D, texture); | |
| 44 return texture; | |
| 45 } | |
| 46 | |
| 47 function checkNonZeroPixels(texture, texWidth, texHeight, skipX, skipY, skipWidt
h, skipHeight, skipR, skipG, skipB, skipA) { | |
| 48 gl.bindTexture(gl.TEXTURE_2D, null); | |
| 49 var fb = gl.createFramebuffer(); | |
| 50 gl.bindFramebuffer(gl.FRAMEBUFFER, fb); | |
| 51 gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D,
texture, 0); | |
| 52 shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLE
TE"); | |
| 53 | |
| 54 var data = new Uint8Array(texWidth * texHeight * 4); | |
| 55 gl.readPixels(0, 0, texWidth, texHeight, gl.RGBA, gl.UNSIGNED_BYTE, data); | |
| 56 | |
| 57 var k = 0; | |
| 58 for (var y = 0; y < texHeight; ++y) { | |
| 59 for (var x = 0; x < texWidth; ++x) { | |
| 60 var index = (y * texWidth + x) * 4; | |
| 61 if (x >= skipX && x < skipX + skipWidth && y >= skipY && y < skipY +
skipHeight) { | |
| 62 if (data[index] != skipR || data[index + 1] != skipG || data[ind
ex + 2] != skipB || data[index + 3] != skipA) { | |
| 63 testFailed("non-zero pixel values are wrong"); | |
| 64 return; | |
| 65 } | |
| 66 } else { | |
| 67 for (var i = 0; i < 4; ++i) { | |
| 68 if (data[index + i] != 0) | |
| 69 k++; | |
| 70 } | |
| 71 } | |
| 72 } | |
| 73 } | |
| 74 if (k) { | |
| 75 testFailed("Found " + k + " non-zero bytes"); | |
| 76 } else { | |
| 77 testPassed("All data initialized"); | |
| 78 } | |
| 79 } | |
| 80 | |
| 81 var width = 512; | |
| 82 var height = 512; | |
| 83 | |
| 84 debug(""); | |
| 85 debug("Reading an uninitialized texture (texImage2D) should succeed with all byt
es set to 0."); | |
| 86 | |
| 87 var tex = setupTexture(width, height); | |
| 88 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_
BYTE, null); | |
| 89 checkNonZeroPixels(tex, width, height, 0, 0, 0, 0, 0, 0, 0, 0); | |
| 90 gl.deleteTexture(tex); | |
| 91 gl.finish(); | |
| 92 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 93 | |
| 94 debug(""); | |
| 95 debug("Reading an uninitialized portion of a texture (copyTexImage2D) should suc
ceed with all bytes set to 0."); | |
| 96 | |
| 97 var tex = setupTexture(width, height); | |
| 98 var fbo = gl.createFramebuffer(); | |
| 99 gl.bindFramebuffer(gl.FRAMEBUFFER, fbo); | |
| 100 var rbo = gl.createRenderbuffer(); | |
| 101 gl.bindRenderbuffer(gl.RENDERBUFFER, rbo); | |
| 102 var fboWidth = 16; | |
| 103 var fboHeight = 16; | |
| 104 gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fboWidth, fboHeight); | |
| 105 gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER
, rbo); | |
| 106 shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE")
; | |
| 107 gl.clearColor(1.0, 0.0, 0.0, 1.0); | |
| 108 gl.clear(gl.COLOR_BUFFER_BIT); | |
| 109 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 110 gl.copyTexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 0, 0, width, height, 0); | |
| 111 checkNonZeroPixels(tex, width, height, 0, 0, fboWidth, fboHeight, 255, 0, 0, 255
); | |
| 112 gl.deleteTexture(tex); | |
| 113 gl.finish(); | |
| 114 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 115 | |
| 116 debug(""); | |
| 117 debug("Reading an uninitialized portion of a texture (copyTexImage2D with negati
ve x and y) should succeed with all bytes set to 0."); | |
| 118 | |
| 119 var tex = setupTexture(width, height); | |
| 120 var fbo = gl.createFramebuffer(); | |
| 121 gl.bindFramebuffer(gl.FRAMEBUFFER, fbo); | |
| 122 var rbo = gl.createRenderbuffer(); | |
| 123 gl.bindRenderbuffer(gl.RENDERBUFFER, rbo); | |
| 124 var fboWidth = 16; | |
| 125 var fboHeight = 16; | |
| 126 gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fboWidth, fboHeight); | |
| 127 gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER
, rbo); | |
| 128 shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE")
; | |
| 129 gl.clearColor(1.0, 0.0, 0.0, 1.0); | |
| 130 gl.clear(gl.COLOR_BUFFER_BIT); | |
| 131 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 132 var x = -8; | |
| 133 var y = -8; | |
| 134 gl.copyTexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, x, y, width, height, 0); | |
| 135 checkNonZeroPixels(tex, width, height, -x, -y, fboWidth, fboHeight, 255, 0, 0, 2
55); | |
| 136 gl.deleteTexture(tex); | |
| 137 gl.finish(); | |
| 138 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 139 | |
| 140 debug(""); | |
| 141 debug("Reading an uninitialized portion of a texture (copyTexImage2D from WebGL
internal fbo) should succeed with all bytes set to 0."); | |
| 142 | |
| 143 var tex = setupTexture(width, height); | |
| 144 gl.bindFramebuffer(gl.FRAMEBUFFER, null); | |
| 145 gl.clearColor(0.0, 1.0, 0.0, 0.0); | |
| 146 gl.clear(gl.COLOR_BUFFER_BIT); | |
| 147 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 148 gl.copyTexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 0, 0, width, height, 0); | |
| 149 checkNonZeroPixels(tex, width, height, 0, 0, canvas.width, canvas.height, 0, 255
, 0, 0); | |
| 150 gl.deleteTexture(tex); | |
| 151 gl.finish(); | |
| 152 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 153 | |
| 154 debug(""); | |
| 155 debug("Reading an uninitialized portion of a texture (copyTexSubImage2D) should
succeed with all bytes set to 0."); | |
| 156 | |
| 157 var tex = gl.createTexture(); | |
| 158 gl.bindTexture(gl.TEXTURE_2D, tex); | |
| 159 var data = new Uint8Array(width * height * 4); | |
| 160 for (var i = 0; i < width * height * 4; ++i) | |
| 161 data[i] = 255; | |
| 162 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_
BYTE, data); | |
| 163 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 164 var fbo = gl.createFramebuffer(); | |
| 165 gl.bindFramebuffer(gl.FRAMEBUFFER, fbo); | |
| 166 var rbo = gl.createRenderbuffer(); | |
| 167 gl.bindRenderbuffer(gl.RENDERBUFFER, rbo); | |
| 168 var fboWidth = 16; | |
| 169 var fboHeight = 16; | |
| 170 gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fboWidth, fboHeight); | |
| 171 gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER
, rbo); | |
| 172 shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE")
; | |
| 173 gl.clearColor(1.0, 0.0, 0.0, 1.0); | |
| 174 gl.clear(gl.COLOR_BUFFER_BIT); | |
| 175 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 176 gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 0, 0, width, height); | |
| 177 checkNonZeroPixels(tex, width, height, 0, 0, fboWidth, fboHeight, 255, 0, 0, 255
); | |
| 178 gl.deleteTexture(tex); | |
| 179 gl.finish(); | |
| 180 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 181 | |
| 182 debug(""); | |
| 183 debug("Reading an uninitialized portion of a texture (copyTexSubImage2D with neg
ative x and y) should succeed with all bytes set to 0."); | |
| 184 | |
| 185 var tex = gl.createTexture(); | |
| 186 gl.bindTexture(gl.TEXTURE_2D, tex); | |
| 187 var data = new Uint8Array(width * height * 4); | |
| 188 for (var i = 0; i < width * height * 4; ++i) | |
| 189 data[i] = 255; | |
| 190 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_
BYTE, data); | |
| 191 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 192 var fbo = gl.createFramebuffer(); | |
| 193 gl.bindFramebuffer(gl.FRAMEBUFFER, fbo); | |
| 194 var rbo = gl.createRenderbuffer(); | |
| 195 gl.bindRenderbuffer(gl.RENDERBUFFER, rbo); | |
| 196 var fboWidth = 16; | |
| 197 var fboHeight = 16; | |
| 198 gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fboWidth, fboHeight); | |
| 199 gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER
, rbo); | |
| 200 shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE")
; | |
| 201 gl.clearColor(1.0, 0.0, 0.0, 1.0); | |
| 202 gl.clear(gl.COLOR_BUFFER_BIT); | |
| 203 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 204 var x = -8; | |
| 205 var y = -8; | |
| 206 gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, x, y, width, height); | |
| 207 checkNonZeroPixels(tex, width, height, -x, -y, fboWidth, fboHeight, 255, 0, 0, 2
55); | |
| 208 gl.deleteTexture(tex); | |
| 209 gl.finish(); | |
| 210 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 211 | |
| 212 debug(""); | |
| 213 debug("Reading an uninitialized portion of a texture (copyTexSubImage2D from Web
GL internal fbo) should succeed with all bytes set to 0."); | |
| 214 | |
| 215 var tex = gl.createTexture(); | |
| 216 gl.bindTexture(gl.TEXTURE_2D, tex); | |
| 217 var data = new Uint8Array(width * height * 4); | |
| 218 for (var i = 0; i < width * height * 4; ++i) | |
| 219 data[i] = 255; | |
| 220 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_
BYTE, data); | |
| 221 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 222 gl.bindFramebuffer(gl.FRAMEBUFFER, null); | |
| 223 gl.clearColor(0.0, 1.0, 0.0, 0.0); | |
| 224 gl.clear(gl.COLOR_BUFFER_BIT); | |
| 225 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 226 gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 0, 0, width, height); | |
| 227 checkNonZeroPixels(tex, width, height, 0, 0, canvas.width, canvas.height, 0, 255
, 0, 0); | |
| 228 gl.deleteTexture(tex); | |
| 229 gl.finish(); | |
| 230 glErrorShouldBe(gl, gl.NO_ERROR); | |
| 231 | |
| 232 //TODO: uninitialized vertex array buffer | |
| 233 //TODO: uninitialized vertex elements buffer | |
| 234 //TODO: uninitialized framebuffer? (implementations would need to do a GL clear
at first binding?) | |
| 235 //TODO: uninitialized renderbuffer? (implementations would need to do a GL clear
at first binding?) | |
| 236 //TODO: uninitialized uniform arrays? | |
| 237 | |
| 238 debug(""); | |
| 239 </script> | |
| 240 </body> | |
| 241 </html> | |
| 242 | |
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Chromium Code Reviews
Issue 1601093008:
Remove duplicated WebGL layout tests. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master