[MC-194675] While spectating a creeper, enderman, spider or cave spider, UI elements are rendered completely white

The bug

Any bossbar or status effect icon on screen is completely blank when viewing the perspective of the following mobs:

Enderman
Creeper
Spider
Cave Spider

It may relates to MC-192290 as the video attachments also includes this issue

Code analysis by @unknown can be found in this comment

Video

[media]

Linked issues

is duplicated by 13

MC-194705 Status effect when I enter into the "creeper" or "spider" view Resolved

MC-194882 Spectating entities that apply a shader breaks the display of hotbar and crosshair Resolved

MC-197624 When entering a creeper in spectator with a potion effect on, the potion effect turns into a white square. Resolved

MC-200040 spectating a mob does not show the texture of effects Resolved

MC-205398 if you have effect on and spactate a creper and the effect become an white block Resolved

8 more links

relates to 2

MC-215534 Spectating a mob with a shader whilst having a carved pumpkin equipped turns the screen completely white Resolved

MC-192290 When Spectating mobs with no skylight or block light, it shows black Resolved

Attachments

Minecraft 1.16.1 - Singleplayer 2020-07-12 15-29-58.mp4

Comments 5

Miguel Pelaez 2020-08-08T06:54:29Z

Hey, I tried to debug this issue. Using the official Minecraft mappings, at the class GameRenderer, the problem seems to be the calling of

this.postEffect.process(float2);

If you disable just the post effect call, everything works. So the surrounding code is not the problem.

RenderSystem.disableBlend();
                RenderSystem.disableDepthTest();
                RenderSystem.disableAlphaTest();
                RenderSystem.enableTexture();
                RenderSystem.matrixMode(5890);
                RenderSystem.pushMatrix();
                RenderSystem.loadIdentity();
                this.postEffect.process(float2);
                RenderSystem.popMatrix();

So the PostPass class is the problem, the process method to be specific.

Avoma 2020-12-13T15:48:16Z

Can confirm in 20w49a.

Avoma 2021-01-21T11:00:11Z

Can confirm in 21w03a.

The Sycorax 2021-03-11T01:24:50Z

This bug no longer exists as of 21w10a.

Avoma 2021-03-11T17:41:20Z

As stated above, this issue appears to be fixed in 21w10a.