Bug 188342

Summary:	GLSL 1.0 shaders are not accepted by webgl 2.0 context
Product:	WebKit	Reporter:	Ryan Oswald <ryanoswald>
Component:	WebGL	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	dino
Priority:	P2
Version:	Safari Technology Preview
Hardware:	Mac
OS:	macOS 10.13

Description Ryan Oswald 2018-08-06 01:51:12 PDT

Webgl 2.0 context seems to expect only GLSL 3.00 shaders, even when the #version 300 es is omitted. 

The webgl 2.0 spec clearly indicates that webgl 2.0 should support both GLSL 1.00 and GLSL 3.00 shaders. Although I cannot find it in the spec, the overwhelming consensus seems to be that 2.0 shaders are by default GLSL 1.0 unless the version directive is included. When provided a GLSL 1.00 shader, I get the following error:

WebGL: ERROR: 0:1: " : #version required and missing.

Comment 1 Ryan Oswald 2018-08-06 12:18:18 PDT

This issue seems to be resolved in the latest nightly.