Bug 212181

Summary: EXT_color_buffer_half_float not exposed on iOS
Product: WebKit Reporter: Kenneth Russell <kbr>
Component: WebGLAssignee: Kenneth Russell <kbr>
Status: RESOLVED FIXED    
Severity: Normal CC: dino, ews-watchlist, graouts, jdarpinian, justin_fan, kondapallykalyan, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Bug Depends on: 210524, 210994    
Bug Blocks: 126404    
Attachments:
Description Flags
Patch none

Kenneth Russell
Reported 2020-05-20 19:08:12 PDT
WebKit's WebGL implementation isn't advertising EXT_color_buffer_half_float on iOS (at least the simulator, and almost surely hardware too). FP texture renderability used to be implicit in the non-ANGLE backend, but is explicit now. This means that FP16 textures can't be used as FBO attachments. This functionality difference could be the reason for some content not working. OES_texture_half_float is supported since Bug 210524, and EXT_color_buffer_half float since Bug 210994.
Attachments
Patch (6.07 KB, patch)
2020-05-21 00:12 PDT, Kenneth Russell 		no flags
DetailsFormatted DiffDiff
View All Add attachment proposed patch, testcase, etc.
Kenneth Russell
Comment 1 2020-05-21 00:12:11 PDT
Created attachment 399940 [details] Patch
EWS Watchlist
Comment 2 2020-05-21 00:13:12 PDT
Note that there are important steps to take when updating ANGLE. See http://trac.webkit.org/wiki/UpdatingANGLE
EWS
Comment 3 2020-05-21 03:50:59 PDT
Committed r261990: <https://trac.webkit.org/changeset/261990> All reviewed patches have been landed. Closing bug and clearing flags on attachment 399940 [details].
Radar WebKit Bug Importer
Comment 4 2020-05-21 03:51:18 PDT
<rdar://problem/63487578>
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