Bug 182379

Summary:

glClearColor - Safari Mobile WebGL implementation doesn't render a transparent background

Product:

WebKit

Reporter:

Roberto <robertogarridomartin>

Component:

Canvas

Assignee:

Nobody <webkit-unassigned>

Status:

RESOLVED DUPLICATE

Severity:

Major

CC:

dino, webkit-bug-importer

Priority:

Keywords:

InRadar

Version:

Other

Hardware:

iPhone / iPad

OS:

Other

Attachments:

Description	Flags
Minimal example reproducing the issue	none

Roberto

Reported 2018-02-01 01:35:37 PST

Created attachment 332860 [details] Minimal example reproducing the issue On safari mobile on iOS 1.3 beta, when loading a website with a WebGL canvas and a text behind it, if you just call glClearColor with a transparent color, the text is not shown. It didn't happen in the previous version of Safari mobile. The issue can be reproduced if you open Safari on iOS 1.3 beta and load any website with a WebGL canvas and a text behind it. For the canvas, just set the clear color to something semi transparent. What I expect is to see the text behind the canvas. What I actually see is a black canvas.

Attachments
Minimal example reproducing the issue (559 bytes, application/zip) 2018-02-01 01:35 PST, Roberto	no flags	Details
View All Add attachment proposed patch, testcase, etc.

Radar WebKit Bug Importer

Comment 1 2018-02-01 11:14:03 PST

<rdar://problem/37123031>

Dean Jackson

Comment 2 2018-03-07 11:05:36 PST

I think this is a dupe of 182550 and has been fixed. *** This bug has been marked as a duplicate of bug 182550 ***

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