126538 2014-01-06 14:03:47 -0800 [WebGL] FBO Depth Buffer Attachment Function Improperly Clearing With 0 2014-04-08 16:17:13 -0700 1 1 1 Unclassified WebKit WebGL 528+ (Nightly build) All All RESOLVED FIXED InRadar P2 Normal --- 36248 1 bfulgham bfulgham bfulgham commit-queue dino esprehn+autocc gyuyoung.kim kondapallykalyan p.szymanski3 roger_fong tomeu oldest_to_newest 964748 0 bfulgham 2014-01-06 14:03:47 -0800 The problem was introduced in 2010 under https://bugs.webkit.org/show_bug.cgi?id=36248. The depth buffer should be initialized to 1.0f (rather than 0.0f) to match expected initialization behavior. The current logic was setting the depth buffer to 1.0, blocking all drawing operations, unless an explicit "gl.clear(gl.DEPTH_BUFFER_BIT)" was being done immediately after attaching the depth FBO.  Found by webgl/1.0.2/resources/webgl_test_files/conformance/renderbuffers/framebuffer-object-attachment.html 964749 1 bfulgham 2014-01-06 14:04:35 -0800 <rdar://problem/15201336> 964751 2 220455 bfulgham 2014-01-06 14:08:38 -0800 Created attachment 220455 Patch 964765 3 bfulgham 2014-01-06 14:39:55 -0800 Committed r161375: <http://trac.webkit.org/changeset/161375> 965036 4 bfulgham 2014-01-07 09:15:35 -0800 *** Bug 81290 has been marked as a duplicate of this bug. *** 966425 5 bfulgham 2014-01-10 10:27:18 -0800 *** Bug 122264 has been marked as a duplicate of this bug. *** 998866 6 mrobinson 2014-04-08 16:17:13 -0700 *** Bug 94300 has been marked as a duplicate of this bug. *** 220455 2014-01-06 14:08:38 -0800 2014-01-06 14:10:05 -0800 Patch bug-126538-20140106140837.patch text/plain 1618 bfulgham SW5kZXg6IFNvdXJjZS9XZWJDb3JlL0NoYW5nZUxvZwo9PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09Ci0tLSBTb3VyY2UvV2Vi Q29yZS9DaGFuZ2VMb2cJKHJldmlzaW9uIDE2MTM3MSkKKysrIFNvdXJjZS9XZWJDb3JlL0NoYW5n ZUxvZwkod29ya2luZyBjb3B5KQpAQCAtMSwzICsxLDE4IEBACisyMDE0LTAxLTA2ICBCcmVudCBG dWxnaGFtICA8YmZ1bGdoYW1AYXBwbGUuY29tPgorCisgICAgICAgIFtXZWJHTF0gRkJPIERlcHRo IEJ1ZmZlciBBdHRhY2htZW50IEZ1bmN0aW9uIEltcHJvcGVybHkgQ2xlYXJpbmcgd2l0aCAwCisg ICAgICAgIGh0dHBzOi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVnLmNnaT9pZD0xMjY1MzgKKyAg ICAgICAgPHJkYXI6Ly9wcm9ibGVtLzE1MjAxMzM2PgorCisgICAgICAgIFJldmlld2VkIGJ5IE5P Qk9EWSAoT09QUyEpLgorCisgICAgICAgIFRlc3RlZCBieSB3ZWJnbC8xLjAuMi9yZXNvdXJjZXMv d2ViZ2xfdGVzdF9maWxlcy9jb25mb3JtYW5jZS9yZW5kZXJidWZmZXJzL2ZyYW1lYnVmZmVyLW9i amVjdC1hdHRhY2htZW50Lmh0bWwKKworICAgICAgICAqIGh0bWwvY2FudmFzL1dlYkdMRnJhbWVi dWZmZXIuY3BwOgorICAgICAgICAoV2ViQ29yZTo6V2ViR0xGcmFtZWJ1ZmZlcjo6aW5pdGlhbGl6 ZUF0dGFjaG1lbnRzKTogQ2xlYXIgZGVwdGggYnVmZmVyIHdpdGggMS4wZiAocmF0aGVyIHRoYW4g MCksIHRvIG1hdGNoIGV4cGVjdGVkCisgICAgICAgIGRlZmF1bHQgKGNsZWFyKSBidWZmZXIgc3Rh dGUgZm9yIE9wZW5HTC4gVXNpbmcgMCB3b3VsZCByZXF1aXJlIHVzIHRvIGZsaXAgdGhlIGNsZWFy IG1hc2sgZm9yIHRoZSBkZXB0aCBhdHRhY2htZW50CisgICAgICAgIHR5cGUuCisKIDIwMTQtMDEt MDYgIEdhdmluIEJhcnJhY2xvdWdoICA8YmFycmFjbG91Z2hAYXBwbGUuY29tPgogCiAgICAgICAg IE1vdmUgVmlld1N0YXRlIHRvIFdlYkNvcmUKSW5kZXg6IFNvdXJjZS9XZWJDb3JlL2h0bWwvY2Fu dmFzL1dlYkdMRnJhbWVidWZmZXIuY3BwCj09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT0KLS0tIFNvdXJjZS9XZWJDb3JlL2h0 bWwvY2FudmFzL1dlYkdMRnJhbWVidWZmZXIuY3BwCShyZXZpc2lvbiAxNjEzNzEpCisrKyBTb3Vy Y2UvV2ViQ29yZS9odG1sL2NhbnZhcy9XZWJHTEZyYW1lYnVmZmVyLmNwcAkod29ya2luZyBjb3B5 KQpAQCAtNTM4LDcgKzUzOCw3IEBAIGJvb2wgV2ViR0xGcmFtZWJ1ZmZlcjo6aW5pdGlhbGl6ZUF0 dGFjaG0KICAgICBpZiAoaW5pdERlcHRoKSB7CiAgICAgICAgIGczZC0+Z2V0RmxvYXR2KEdyYXBo aWNzQ29udGV4dDNEOjpERVBUSF9DTEVBUl9WQUxVRSwgJmRlcHRoQ2xlYXJWYWx1ZSk7CiAgICAg ICAgIGczZC0+Z2V0Qm9vbGVhbnYoR3JhcGhpY3NDb250ZXh0M0Q6OkRFUFRIX1dSSVRFTUFTSywg JmRlcHRoTWFzayk7Ci0gICAgICAgIGczZC0+Y2xlYXJEZXB0aCgwKTsKKyAgICAgICAgZzNkLT5j bGVhckRlcHRoKDEuMGYpOwogICAgICAgICBnM2QtPmRlcHRoTWFzayh0cnVlKTsKICAgICB9CiAg ICAgaWYgKGluaXRTdGVuY2lsKSB7Cg==