(Realtime postprocess + Compositor) PPComp warnings

this three.js webgl2 example here is working fine on iOS 14.2 : https://threejs.org/examples/?q=webgl2#webgl2_volume_instancing but exporting to html5/webgl2 (or webgl1 with legacy shaders) with Armory3D you will get a black screen on iOS 14.2. On iOS 13.3.1 everything works fine.

I also get the below errors in the web dev console now (not sure if related to this issue) :

[Log] kha/graphics4/PipelineState.hx:96: Warning: Uniform PPComp3 not found. (kha.js, line 1)
[Log] kha/graphics4/PipelineState.hx:96: Warning: Uniform PPComp5 not found. (kha.js, line 1)
[Log] kha/graphics4/PipelineState.hx:96: Warning: Uniform PPComp6 not found. (kha.js, line 1)
[Log] kha/graphics4/PipelineState.hx:96: Warning: Uniform PPComp7 not found. (kha.js, line 1)
[Log] kha/graphics4/PipelineState.hx:96: Warning: Uniform PPComp8 not found. (kha.js, line 1)
[Error] WebGL: INVALID_ENUM: texParameter: invalid parameter name
	texParameteri
	setTextureCompareMode (kha.js:1:944491)
	(anonymous function) (kha.js:1:385507)
	(anonymous function) (kha.js:1:382557)
	render (kha.js:1:352629)
	submitDraw (kha.js:1:223761)
	drawMeshes (kha.js:1:222697)
	(anonymous function) (kha.js:1:59468)
	(anonymous function) (kha.js:1:60281)
	renderFrame (kha.js:1:219169)
	renderFrame (kha.js:1:321235)
	renderFrame (kha.js:1:101139)
	(anonymous function) (kha.js:1:73571)
	(anonymous function) (kha.js:1:520512)
	animate (kha.js:1:530955)

[RobDangerous]

Hey, @onelsonic just reminded me that I forgot to comment here by closing https://github.com/Kode/Kha/issues/1274 The constants were added manually because they didn’t yet exist in the Haxe API. They are on the top of the file, should be fine that way. The warnings listed here also look very much like a very different problem. Can’t test iOS 14 things myself yet though and off-by-default browser features are not a priority.

[MoritzBrueckner]

Just a guess, but I think there might be a typo here:

https://github.com/Kode/Kha/blob/b4fb18402b04675146b1d0770d6cce4f30b36de6/Backends/HTML5/kha/js/graphics4/Graphics.hx#L445

Instead of GL_COMPARE_REF_TO_TEXTURE the parameter should probably be called GL.COMPARE_REF_TO_TEXTURE according to the webgl documentation. The same error probably also occurs in setCubeMapCompareMode() a few lines below that. Also, in the Haxe js API it seems that this parameter is only available on webgl2 and not on webgl1 which is imported in the file linked above.

@RobDangerous Maybe you can help us here? Is this a Kha issue?

@onelsonic Can you share the kha.js file? If you recompiled the project in between and the lines in the error message changed, please also paste the new error message alongside the file.