jujuadams/bulb

2D lighting and shadows for GameMaker 2022 LTS

Bulb 21.0.1

2D lighting and shadows for GameMaker 2022 LTS

 

 

• Download the .yymps

• Read the documentation

• You may also like borup’s lighting engine, YoYoGames’ DIY explanation, and Aura 2

bulb's Issues

Add warning (or work around) for people forgetting to rebuild the renderer when changing rooms

Support 16-bit float surfaces

Polygonal overlay renderer

Requires triangulation algo

Add more control for rendering resolution

GM's garbage collector doesn't quickly clean up orphaned lights

Need to add a proper .Destroy() method.

Add method to subtract from shadowmap

https://discord.com/channels/724320164371497020/784850704485056533/1081439515475972157

Feature proposal: Light/Shadow Masking

I asked you about it a while ago. So this is just in case you find a way for this feature...

Light/Shadow Masking : In 2d game with side view, it might be useful to have the lights/shadows displayed only on the assets that are imediately behind the light (close to it) and not displayed on those that are far away.

In this case shadows from the light orb cast on the yellow wall and not on the background blue sky.

As user, maybe we could use a .add_masking_layer() to add layers as masks and tell Bulb its elements should be used to build the masking surface....

Add infinite distance light source for e.g. sunlight

Feature to add last-in-pipeline non-casting lighting sprites to lighting system

Add option for dithering on lighting surface

Improve documentation on occluder edge coordinates

Add helper function to add a tile layer as an occluder

Lights with `.castShadows` set to `false` still cast shadows

Hello there Juju,

In the demo project, if I turn castShadows to False in Lights and iterate on lighting modes, Lights will continue to cast shadows except for Soft alpha Clip bm_add.

I downloaded the latest demo 20.5.0.
In oLightDiscooooI Object create event, I set light.castShadows = false;
I only keep one light instance and delete the step event to see what I'm doing

I run the demo and in the rmTest Room, I iterate over lighting modes using the [2] key
All modes (but Soft alpha Clip bm_add) continue to cast shadows

(In fact I was trying to reproduce in the Demo a bug I have in my project (where when I set castShadows to false, my light fully disappear) but got this result instead. I'll investigate further...

Feature to add "negative space" shadow sprites to lighting system

Sometimes it is helpful to be able to apply negative space to lighting e.g. for fog effects or to mask level boundaries. The proposed feature would allow for shadow sprites to be drawn directly to the lighting accumulation surface.

Сan't create room larger than 8800х8800.

I got a problem that if I increase the room width to 8900, then strong lags begin, although the fps debug shows that everything is fine (2000+) If I set it to 1300x1300 I get such an error.
https://i.imgur.com/mQUeD6P.png
https://i.imgur.com/l7BLKnt.png
https://i.imgur.com/WRreJ13.png
https://i.imgur.com/RdRtlmn.png
I have not encountered this with other light systems. In what there can be a problem? Same limitation?

BulbLight seems not existing

Add tilemap equivalents for ambience/shadow overlay/light overlay functions

Add global illumination... maybe?

A bug that doesn't appear often

Hello! Sometimes such a bug appears and disappears by itself, or after you move the window with the mouse. It appears under different conditions, in different places. How to catch him?

Add helper function to add a sprite as a pixel-perfect occluder

An object without shadows and light

Hello! Is it possible to draw an object in the middle of a darkened room that would not be darkened? It is necessary to show a hint object for the player, so that it is not affected by light and shadows.

Typo... I think

In the accumulateHardLights() method from BulbRenderer class, shouldn't line 588 be:
if (mode == BULB_MODE.HARD_BM_MAX or mode == BULB_MODE.HARD_BM_MAX_SELFLIGHTING)
Instead of:
if (mode == BULB_MODE.HARD_BM_MAX)

To use BM_MAX for both standard and selflighting ?

M

Make depth in lighting system?

In this topic I explained the essence of the problem.
https://forum.yoyogames.com/index.php?threads/how-to-make-depth-in-lighting-system.96579/#post-581799

Normal mapping

Shadows flicker on BULB_MODE.SOFT_ADD

When using SOFT_ADD bulb mode, shadows flicker. This behavior happens on both export targets I tried (Windows and HTML5). Tested with the Bulb.yyp sample project downloaded from the Github page itself, and confirmed with my sample project. When switching to any other bulb modes, it works fine.

A (kinda low bit) GIF showing the behavior with SOFT_ADD and with the next mode (HARD_BM_ADD) can be viewed here: https://ibb.co/G2Q6pQh

Tested on an mobile Nvidia RTX 2080 Max-Q using Gamemaker Studio 2 IDE v2.3.2.560 and runtime 2.3.2.426.

Dynamic occluders crash when using a hard shadow mode with a group-based renderer

Solution is to replace line 413 __BulbAddOcclusionSoft(_dynamicVBuffer); with __BulbAddOcclusionHard(...)

Blocky soft shadow rendering near penumbra potentially with AMD Cards

Hello, thanks for the wonderful lighting engine. I am having a slight issue.

There seems to be an issue rendering shadows that shows up on one computer but not another. One difference between the two that may affect this may be the difference in graphics cards, Vega 64 vs GTX1080, where the Vega 64 computer shows this issue and the GTX1080 computer does not. It also seems to favor glitchy rendering on the "left" side of the shadow.

Thanks again.

Get world matrices working with normal transformation

Automatically clean up surfaces from renderers

Use a tick method and weak references for this one.