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Issue 1586053002: Reland of Untouch out of bound pixels for CopyTexSubImage2D (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: fix layout tests Created 4 years, 11 months ago
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1 <!doctype html> 1 <!doctype html>
2 <html> 2 <html>
3 <head> 3 <head>
4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
5 <title>WebGL Uninitialized GL Resources Tests</title> 5 <title>WebGL Uninitialized GL Resources Tests</title>
6 <script src="../../../resources/js-test.js"></script> 6 <script src="../../../resources/js-test.js"></script>
7 <script src="resources/webgl-test.js"></script> 7 <script src="resources/webgl-test.js"></script>
8 </head> 8 </head>
9 <body> 9 <body>
10 <div id="description"></div> 10 <div id="description"></div>
(...skipping 26 matching lines...) Expand all
37 gl.finish(); // make sure it has been uploaded 37 gl.finish(); // make sure it has been uploaded
38 38
39 gl.deleteTexture(texture); 39 gl.deleteTexture(texture);
40 gl.finish(); // make sure it has been deleted 40 gl.finish(); // make sure it has been deleted
41 41
42 var texture = gl.createTexture(); 42 var texture = gl.createTexture();
43 gl.bindTexture(gl.TEXTURE_2D, texture); 43 gl.bindTexture(gl.TEXTURE_2D, texture);
44 return texture; 44 return texture;
45 } 45 }
46 46
47 function checkNonZeroPixels(texture, texWidth, texHeight, skipX, skipY, skipWidt h, skipHeight, skipR, skipG, skipB, skipA) { 47 function checkPixels(texture, texWidth, texHeight, skipX, skipY, skipWidth, skip Height, skipR, skipG, skipB, skipA, expectedValue) {
48 gl.bindTexture(gl.TEXTURE_2D, null); 48 gl.bindTexture(gl.TEXTURE_2D, null);
49 var fb = gl.createFramebuffer(); 49 var fb = gl.createFramebuffer();
50 gl.bindFramebuffer(gl.FRAMEBUFFER, fb); 50 gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
51 gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 0); 51 gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 0);
52 shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLE TE"); 52 shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLE TE");
53 53
54 var data = new Uint8Array(texWidth * texHeight * 4); 54 var data = new Uint8Array(texWidth * texHeight * 4);
55 gl.readPixels(0, 0, texWidth, texHeight, gl.RGBA, gl.UNSIGNED_BYTE, data); 55 gl.readPixels(0, 0, texWidth, texHeight, gl.RGBA, gl.UNSIGNED_BYTE, data);
56 56
57 var k = 0; 57 var k = 0;
58 for (var y = 0; y < texHeight; ++y) { 58 for (var y = 0; y < texHeight; ++y) {
59 for (var x = 0; x < texWidth; ++x) { 59 for (var x = 0; x < texWidth; ++x) {
60 var index = (y * texWidth + x) * 4; 60 var index = (y * texWidth + x) * 4;
61 if (x >= skipX && x < skipX + skipWidth && y >= skipY && y < skipY + skipHeight) { 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) { 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"); 63 testFailed("non-zero pixel values are wrong");
64 return; 64 return;
65 } 65 }
66 } else { 66 } else {
67 for (var i = 0; i < 4; ++i) { 67 for (var i = 0; i < 4; ++i) {
68 if (data[index + i] != 0) 68 if (data[index + i] != expectedValue)
69 k++; 69 k++;
70 } 70 }
71 } 71 }
72 } 72 }
73 } 73 }
74 if (k) { 74 if (k) {
75 testFailed("Found " + k + " non-zero bytes"); 75 testFailed("Found " + k + " unexpected bytes");
76 } else { 76 } else {
77 testPassed("All data initialized"); 77 testPassed("All data is expected");
78 } 78 }
79 } 79 }
80 80
81 var width = 512; 81 var width = 512;
82 var height = 512; 82 var height = 512;
83 83
84 debug(""); 84 debug("");
85 debug("Reading an uninitialized texture (texImage2D) should succeed with all byt es set to 0."); 85 debug("Reading an uninitialized texture (texImage2D) should succeed with all byt es set to 0.");
86 86
87 var tex = setupTexture(width, height); 87 var tex = setupTexture(width, height);
88 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_ BYTE, null); 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); 89 checkPixels(tex, width, height, 0, 0, 0, 0, 0, 0, 0, 0, 0);
90 gl.deleteTexture(tex); 90 gl.deleteTexture(tex);
91 gl.finish(); 91 gl.finish();
92 glErrorShouldBe(gl, gl.NO_ERROR); 92 glErrorShouldBe(gl, gl.NO_ERROR);
93 93
94 debug(""); 94 debug("");
95 debug("Reading an uninitialized portion of a texture (copyTexImage2D) should suc ceed with all bytes set to 0."); 95 debug("Reading an uninitialized portion of a texture (copyTexImage2D) should suc ceed with all bytes set to 0.");
96 96
97 var tex = setupTexture(width, height); 97 var tex = setupTexture(width, height);
98 var fbo = gl.createFramebuffer(); 98 var fbo = gl.createFramebuffer();
99 gl.bindFramebuffer(gl.FRAMEBUFFER, fbo); 99 gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
100 var rbo = gl.createRenderbuffer(); 100 var rbo = gl.createRenderbuffer();
101 gl.bindRenderbuffer(gl.RENDERBUFFER, rbo); 101 gl.bindRenderbuffer(gl.RENDERBUFFER, rbo);
102 var fboWidth = 16; 102 var fboWidth = 16;
103 var fboHeight = 16; 103 var fboHeight = 16;
104 gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fboWidth, fboHeight); 104 gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fboWidth, fboHeight);
105 gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER , rbo); 105 gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER , rbo);
106 shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE") ; 106 shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE") ;
107 gl.clearColor(1.0, 0.0, 0.0, 1.0); 107 gl.clearColor(1.0, 0.0, 0.0, 1.0);
108 gl.clear(gl.COLOR_BUFFER_BIT); 108 gl.clear(gl.COLOR_BUFFER_BIT);
109 glErrorShouldBe(gl, gl.NO_ERROR); 109 glErrorShouldBe(gl, gl.NO_ERROR);
110 gl.copyTexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 0, 0, width, height, 0); 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 ); 111 checkPixels(tex, width, height, 0, 0, fboWidth, fboHeight, 255, 0, 0, 255, 0);
112 gl.deleteTexture(tex); 112 gl.deleteTexture(tex);
113 gl.finish(); 113 gl.finish();
114 glErrorShouldBe(gl, gl.NO_ERROR); 114 glErrorShouldBe(gl, gl.NO_ERROR);
115 115
116 debug(""); 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."); 117 debug("Reading an uninitialized portion of a texture (copyTexImage2D with negati ve x and y) should succeed with all bytes set to 0.");
118 118
119 var tex = setupTexture(width, height); 119 var tex = setupTexture(width, height);
120 var fbo = gl.createFramebuffer(); 120 var fbo = gl.createFramebuffer();
121 gl.bindFramebuffer(gl.FRAMEBUFFER, fbo); 121 gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
122 var rbo = gl.createRenderbuffer(); 122 var rbo = gl.createRenderbuffer();
123 gl.bindRenderbuffer(gl.RENDERBUFFER, rbo); 123 gl.bindRenderbuffer(gl.RENDERBUFFER, rbo);
124 var fboWidth = 16; 124 var fboWidth = 16;
125 var fboHeight = 16; 125 var fboHeight = 16;
126 gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fboWidth, fboHeight); 126 gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fboWidth, fboHeight);
127 gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER , rbo); 127 gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER , rbo);
128 shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE") ; 128 shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE") ;
129 gl.clearColor(1.0, 0.0, 0.0, 1.0); 129 gl.clearColor(1.0, 0.0, 0.0, 1.0);
130 gl.clear(gl.COLOR_BUFFER_BIT); 130 gl.clear(gl.COLOR_BUFFER_BIT);
131 glErrorShouldBe(gl, gl.NO_ERROR); 131 glErrorShouldBe(gl, gl.NO_ERROR);
132 var x = -8; 132 var x = -8;
133 var y = -8; 133 var y = -8;
134 gl.copyTexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, x, y, width, height, 0); 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); 135 checkPixels(tex, width, height, -x, -y, fboWidth, fboHeight, 255, 0, 0, 255, 0);
136 gl.deleteTexture(tex); 136 gl.deleteTexture(tex);
137 gl.finish(); 137 gl.finish();
138 glErrorShouldBe(gl, gl.NO_ERROR); 138 glErrorShouldBe(gl, gl.NO_ERROR);
139 139
140 debug(""); 140 debug("");
141 debug("Reading an uninitialized portion of a texture (copyTexImage2D from WebGL internal fbo) should succeed with all bytes set to 0."); 141 debug("Reading an uninitialized portion of a texture (copyTexImage2D from WebGL internal fbo) should succeed with all bytes set to 0.");
142 142
143 var tex = setupTexture(width, height); 143 var tex = setupTexture(width, height);
144 gl.bindFramebuffer(gl.FRAMEBUFFER, null); 144 gl.bindFramebuffer(gl.FRAMEBUFFER, null);
145 gl.clearColor(0.0, 1.0, 0.0, 0.0); 145 gl.clearColor(0.0, 1.0, 0.0, 0.0);
146 gl.clear(gl.COLOR_BUFFER_BIT); 146 gl.clear(gl.COLOR_BUFFER_BIT);
147 glErrorShouldBe(gl, gl.NO_ERROR); 147 glErrorShouldBe(gl, gl.NO_ERROR);
148 gl.copyTexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 0, 0, width, height, 0); 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); 149 checkPixels(tex, width, height, 0, 0, canvas.width, canvas.height, 0, 255, 0, 0, 0);
150 gl.deleteTexture(tex); 150 gl.deleteTexture(tex);
151 gl.finish(); 151 gl.finish();
152 glErrorShouldBe(gl, gl.NO_ERROR); 152 glErrorShouldBe(gl, gl.NO_ERROR);
153 153
154 debug(""); 154 debug("");
155 debug("Reading an uninitialized portion of a texture (copyTexSubImage2D) should succeed with all bytes set to 0."); 155 debug("Reading an uninitialized portion of a texture (copyTexSubImage2D) should succeed with all bytes untouched.");
156 156
157 var tex = gl.createTexture(); 157 var tex = gl.createTexture();
158 gl.bindTexture(gl.TEXTURE_2D, tex); 158 gl.bindTexture(gl.TEXTURE_2D, tex);
159 var data = new Uint8Array(width * height * 4); 159 var data = new Uint8Array(width * height * 4);
160 for (var i = 0; i < width * height * 4; ++i) 160 for (var i = 0; i < width * height * 4; ++i)
161 data[i] = 255; 161 data[i] = 255;
162 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_ BYTE, data); 162 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_ BYTE, data);
163 glErrorShouldBe(gl, gl.NO_ERROR); 163 glErrorShouldBe(gl, gl.NO_ERROR);
164 var fbo = gl.createFramebuffer(); 164 var fbo = gl.createFramebuffer();
165 gl.bindFramebuffer(gl.FRAMEBUFFER, fbo); 165 gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
166 var rbo = gl.createRenderbuffer(); 166 var rbo = gl.createRenderbuffer();
167 gl.bindRenderbuffer(gl.RENDERBUFFER, rbo); 167 gl.bindRenderbuffer(gl.RENDERBUFFER, rbo);
168 var fboWidth = 16; 168 var fboWidth = 16;
169 var fboHeight = 16; 169 var fboHeight = 16;
170 gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fboWidth, fboHeight); 170 gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fboWidth, fboHeight);
171 gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER , rbo); 171 gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER , rbo);
172 shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE") ; 172 shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE") ;
173 gl.clearColor(1.0, 0.0, 0.0, 1.0); 173 gl.clearColor(1.0, 0.0, 0.0, 1.0);
174 gl.clear(gl.COLOR_BUFFER_BIT); 174 gl.clear(gl.COLOR_BUFFER_BIT);
175 glErrorShouldBe(gl, gl.NO_ERROR); 175 glErrorShouldBe(gl, gl.NO_ERROR);
176 gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 0, 0, width, height); 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 ); 177 checkPixels(tex, width, height, 0, 0, fboWidth, fboHeight, 255, 0, 0, 255, 255);
178 gl.deleteTexture(tex); 178 gl.deleteTexture(tex);
179 gl.finish(); 179 gl.finish();
180 glErrorShouldBe(gl, gl.NO_ERROR); 180 glErrorShouldBe(gl, gl.NO_ERROR);
181 181
182 debug(""); 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."); 183 debug("Reading an uninitialized portion of a texture (copyTexSubImage2D with neg ative x and y) should succeed with all bytes untouched.");
184 184
185 var tex = gl.createTexture(); 185 var tex = gl.createTexture();
186 gl.bindTexture(gl.TEXTURE_2D, tex); 186 gl.bindTexture(gl.TEXTURE_2D, tex);
187 var data = new Uint8Array(width * height * 4); 187 var data = new Uint8Array(width * height * 4);
188 for (var i = 0; i < width * height * 4; ++i) 188 for (var i = 0; i < width * height * 4; ++i)
189 data[i] = 255; 189 data[i] = 255;
190 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_ BYTE, data); 190 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_ BYTE, data);
191 glErrorShouldBe(gl, gl.NO_ERROR); 191 glErrorShouldBe(gl, gl.NO_ERROR);
192 var fbo = gl.createFramebuffer(); 192 var fbo = gl.createFramebuffer();
193 gl.bindFramebuffer(gl.FRAMEBUFFER, fbo); 193 gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
194 var rbo = gl.createRenderbuffer(); 194 var rbo = gl.createRenderbuffer();
195 gl.bindRenderbuffer(gl.RENDERBUFFER, rbo); 195 gl.bindRenderbuffer(gl.RENDERBUFFER, rbo);
196 var fboWidth = 16; 196 var fboWidth = 16;
197 var fboHeight = 16; 197 var fboHeight = 16;
198 gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fboWidth, fboHeight); 198 gl.renderbufferStorage(gl.RENDERBUFFER, gl.RGBA4, fboWidth, fboHeight);
199 gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER , rbo); 199 gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER , rbo);
200 shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE") ; 200 shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_COMPLETE") ;
201 gl.clearColor(1.0, 0.0, 0.0, 1.0); 201 gl.clearColor(1.0, 0.0, 0.0, 1.0);
202 gl.clear(gl.COLOR_BUFFER_BIT); 202 gl.clear(gl.COLOR_BUFFER_BIT);
203 glErrorShouldBe(gl, gl.NO_ERROR); 203 glErrorShouldBe(gl, gl.NO_ERROR);
204 var x = -8; 204 var x = -8;
205 var y = -8; 205 var y = -8;
206 gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, x, y, width, height); 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); 207 checkPixels(tex, width, height, -x, -y, fboWidth, fboHeight, 255, 0, 0, 255, 255 );
208 gl.deleteTexture(tex); 208 gl.deleteTexture(tex);
209 gl.finish(); 209 gl.finish();
210 glErrorShouldBe(gl, gl.NO_ERROR); 210 glErrorShouldBe(gl, gl.NO_ERROR);
211 211
212 debug(""); 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."); 213 debug("Reading an uninitialized portion of a texture (copyTexSubImage2D from Web GL internal fbo) should succeed with all bytes untouched.");
214 214
215 var tex = gl.createTexture(); 215 var tex = gl.createTexture();
216 gl.bindTexture(gl.TEXTURE_2D, tex); 216 gl.bindTexture(gl.TEXTURE_2D, tex);
217 var data = new Uint8Array(width * height * 4); 217 var data = new Uint8Array(width * height * 4);
218 for (var i = 0; i < width * height * 4; ++i) 218 for (var i = 0; i < width * height * 4; ++i)
219 data[i] = 255; 219 data[i] = 255;
220 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_ BYTE, data); 220 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_ BYTE, data);
221 glErrorShouldBe(gl, gl.NO_ERROR); 221 glErrorShouldBe(gl, gl.NO_ERROR);
222 gl.bindFramebuffer(gl.FRAMEBUFFER, null); 222 gl.bindFramebuffer(gl.FRAMEBUFFER, null);
223 gl.clearColor(0.0, 1.0, 0.0, 0.0); 223 gl.clearColor(0.0, 1.0, 0.0, 0.0);
224 gl.clear(gl.COLOR_BUFFER_BIT); 224 gl.clear(gl.COLOR_BUFFER_BIT);
225 glErrorShouldBe(gl, gl.NO_ERROR); 225 glErrorShouldBe(gl, gl.NO_ERROR);
226 gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0, 0, 0, 0, width, height); 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); 227 checkPixels(tex, width, height, 0, 0, canvas.width, canvas.height, 0, 255, 0, 0, 255);
228 gl.deleteTexture(tex); 228 gl.deleteTexture(tex);
229 gl.finish(); 229 gl.finish();
230 glErrorShouldBe(gl, gl.NO_ERROR); 230 glErrorShouldBe(gl, gl.NO_ERROR);
231 231
232 //TODO: uninitialized vertex array buffer 232 //TODO: uninitialized vertex array buffer
233 //TODO: uninitialized vertex elements buffer 233 //TODO: uninitialized vertex elements buffer
234 //TODO: uninitialized framebuffer? (implementations would need to do a GL clear at first binding?) 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?) 235 //TODO: uninitialized renderbuffer? (implementations would need to do a GL clear at first binding?)
236 //TODO: uninitialized uniform arrays? 236 //TODO: uninitialized uniform arrays?
237 237
238 debug(""); 238 debug("");
239 </script> 239 </script>
240 </body> 240 </body>
241 </html> 241 </html>
242 242
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