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content/canvas/test/webgl-mochitest/test_depth_readpixels.html
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| 1 <!DOCTYPE HTML> | |
| 2 <html> | |
| 3 <head> | |
| 4 <title>WebGL test: Check for error on ReadPixels from a depth-only FB.</title> | |
| 5 <script src="/tests/SimpleTest/SimpleTest.js"></script> | |
| 6 <link rel="stylesheet" href="/tests/SimpleTest/test.css"> | |
| 7 <script src="webgl-util.js"></script> | |
| 8 <script src="driver-info.js"></script> | |
| 9 </head> | |
| 10 <body> | |
| 11 <canvas id="c"></canvas> | |
| 12 <script> | |
| 13 "use strict"; | |
| 14 | |
| 15 (function() { | |
| 16 var gl = WebGLUtil.getWebGL('c'); | |
| 17 if (!gl) { | |
| 18 todo(gl, 'Get GL working here first.'); | |
| 19 return; | |
| 20 } | |
| 21 | |
| 22 var rb = gl.createRenderbuffer(); | |
| 23 gl.bindRenderbuffer(gl.RENDERBUFFER, rb); | |
| 24 gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16, 4, 4); | |
| 25 | |
| 26 var fb = gl.createFramebuffer(); | |
| 27 gl.bindFramebuffer(gl.FRAMEBUFFER, fb); | |
| 28 gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, | |
| 29 gl.RENDERBUFFER, rb); | |
| 30 | |
| 31 if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) != gl.FRAMEBUFFER_COMPLETE) { | |
| 32 todo(false, 'Depth-only FB incomplete. This is valid.'); | |
| 33 return; | |
| 34 } | |
| 35 | |
| 36 ok(!gl.getError(), 'Should have no errors after constructing FB.'); | |
| 37 | |
| 38 var pixels = new Uint8Array([1, 2, 3, 4]); | |
| 39 gl.readPixels(0, 0, // x,y | |
| 40 1, 1, // w,h | |
| 41 gl.RGBA, gl.UNSIGNED_BYTE, pixels); | |
| 42 | |
| 43 ok(gl.getError() == gl.INVALID_OPERATION, | |
| 44 '1x1 color read from a depth FB should generated INVALID_OP.'); | |
| 45 console.log('Data after 1x1 color-from-depth readpixels:'); | |
| 46 console.log(pixels); | |
| 47 | |
| 48 gl.readPixels(0, 0, // x,y | |
| 49 0, 0, // w,h | |
| 50 gl.RGBA, gl.UNSIGNED_BYTE, pixels); | |
| 51 | |
| 52 ok(gl.getError() == gl.INVALID_OPERATION, | |
| 53 '0x0 color read from a depth FB should generated INVALID_OP.'); | |
| 54 })(); | |
| 55 | |
| 56 ok(true, 'Test complete.'); | |
| 57 | |
| 58 </script> | |
| 59 </body> | |
| 60 </html> |
