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Questions tagged [shadows]

Dark spaces cast by the presence of a solid object blocking the flow of light. Often helpful for telling where your character is going to land.

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28
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2answers
7k views

Why do some games show lights shine through walls?

In some games, I see lights shining through walls, even if I set video quality on high levels. A couple of examples of games I recently played are Borderlands 2 (missile explosions) and Call of ...
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0answers
28 views

Unity: How to fix shadows with several meshes in different objects?

I'm creating many GameObjects and each one has a single mesh, created in a script. The problem is that I would like to draw them so that they behave like a single mesh. Is it possible? Or I must ...
0
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0answers
448 views

LWRP Custom Shader Graph material casts no shadow

I created an empty Shader Graph by clicking Create -> Shaders -> PBR Graph. I created the material for this shader and assigned it to my game object, but the object does not cast a shadow. If I ...
0
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0answers
23 views

Unity : Casting shadows of anima2d characters

I want to cast shadows of animated 2d character on a level like this : The only thing here I want is dynamic shadows for anima2d character as animation progresses.Is there a way of achieving shadows ...
0
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0answers
71 views

Shadow problems with Unity's Lightweight Render Pipeline

So I installed the Lightweight Render Pipeline onto an existing project of mine and the placeholder model I've been using for the player (the broom) started showing a hole in its shadow. I don't ...
1
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0answers
49 views

Shadows are not showing up

I am fairly new to graphics programming, and I am working on a rudimentary game engine in C++. I had some old graphics code written in Java that I translated, but for some reason the shadows are not ...
0
votes
1answer
26 views

How can spotlights be implemented with a perspective projection?

I was reading Shadow Mapping with Directional Lights and noted that spotlights are implemented by rendering with the perspective projection, stating that the spotlight worked just like the camera. ...
0
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0answers
49 views

Unity Soft Shadows

I'm building a puzzle level in Unity. I have a ball with cracks on it and a point light inside it. The goal is to project the light coming through the cracks into the walls. I've managed to do that ...
1
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1answer
93 views

Shadow artifacts/acne on block intersections

This is using the default shader and depth shader from LibGdx. It creates lines at the blocks intersections. This is what I use to create the blocks models for now: ...
0
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1answer
159 views

LibGDX Box2dlights - Body Shadow Problem

While playing around with the box2dlights with libGDX, I have managed to get it all up and running, but have a problem with the shadow rendering. This is what I currently have atm: With the lighting ...
0
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1answer
119 views

Why do I get this weird shadow render error?

Using Unity 2018.2.14/15 I've recently been working on a small project and I encountered a very weird problem. It's hard to describe so here is a picture: Originally I assumed it may be an issue with ...
1
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1answer
188 views

How can I create a 2D sprite shadow like in “Alto's Odyssey”?

I've seen that the game "Alto's Odyssey" has a very nice way of projecting shadows on the ground the player is sliding on: How could i replicate that? Would I use some shader magic, or by projecting ...
2
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0answers
20 views

Unity Lighting Problems [duplicate]

I've got a problem with the settings of lighting in my unity scene. The objects have got "dark sides" and it doesn't look natural. You can see the screenshots and my light settings here: The ...
0
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0answers
58 views

Cascading Shadow Maps - Spotlight Projection

In all the cascading shadow map explanations I have read, the final projection into the shadow-map is done using an orthographic projection. This makes sense for a directional light because a ...
0
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1answer
157 views

Light and shadows like Diablo

I wanted to have shadows in my game and thought the way they were implemented in Diablo was good enough. Any hints on how to produce a similar outcome?
2
votes
1answer
882 views

Strange realtime shadows in Unity3D

I'm trying to do realtime lighting, and my shadows are acting very strange. When I project a spotlight out from the camera (like a flashlight in a first person game) my shadows show up as 3D skews of ...
1
vote
1answer
186 views

Unity3d - Cast dynamic shadows without processing multiple lights

Back Story I've built a game with a friend and all goes well until there are too many spheres under a group of 5 lights, then things start getting choppy. Troubleshooting I've found that by turning ...
1
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0answers
371 views

Screen-space shadows?

Is there such a thing as screen-space shadows? I know that most shadow projection comes from rendering the world from the viewpoint of the light source, projecting the shadows onto a large square ...
0
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1answer
52 views

Calculating the shadow cast by triangle onto the YZ plane

So, one of the exercises for my computer graphics class is as follows: Calculate the shadow cast by triangle T onto the YZ plane P. given: Triangle T coordinates: A=(30,10,16) B=(32,11,18) C=(31,...
0
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0answers
42 views

Getting proper shadows in my Disolve shader

So I wipped up this shader that disolves an object. The problem is that the shadow of the object is unaffected from the alpha value. How do I fix this. Full code : ...
0
votes
1answer
109 views

Omnidirectional Faded Soft Shadows

I'm doing research to implement a shadow algorithm for omnidirectional soft shadows in a real-time 3D renderer. I've read about PCF but to me it doesn't look very realistic since it doesn't "fade" ...
0
votes
1answer
113 views

How can you pass a large amount of textures or equivalent to the fragment shader in OpenGL?

I am adding shadow mapping to a game engine I am working on. For this effect, each light source needs it's own associated shadow map cube texture. I am going to be exaggerated and say there can be ...
0
votes
1answer
136 views

How to create a depth-recording shader for shadow mapping?

I am attempting to implement shadow maps. I am first going to implement spotlights over directional lights (I am aware this is harder). Since I was already rendering the geometry, my attempt was to ...
4
votes
1answer
120 views

Phantom objects in ray tracing

I am attempting to add volumetric shadowing to an application I am working on to test some things. For this effect I wrote the following fragment ...
1
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2answers
495 views

Proper indoor lighting without directional light

I would like to know how to properly handle indoor lighting without a directional light. My scene has a room( its some kind of shop), in which the player and ai-agents can move around. I can get good ...
1
vote
1answer
485 views

How can I animate shadow in surface shader?

I wrote wind shader that works but as you can see it have shadow problem! when I animating vertices shadow is fixed! ...
0
votes
1answer
2k views

How can I fix my shadow caster problem?

I'm trying to make invisible object with shadow by using it's shadow castting pass it additionaly shades back side of object itself. I mean object shades his back side and draws shadow on the ...
0
votes
1answer
172 views

Can you access the vertices passed into GLSL as an array?

So in the vertex shader I receive my vertex data as: ...
0
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0answers
67 views

How to put triangle information into a glsl shader for dynamic shadows?

I am experimenting with how much I can push the GPU with clever optimizations and correct use of hardware, so I know this may lag my computer a lot, that's not the issue. Currently my goal is as ...
2
votes
1answer
126 views

Unity Shadow shows on my Android device but NOT my Windows Mobile device

Unity version: 2017.1.1f1 Problem: I'm using Directional Light. Shadow is not showing in my Windows Mobile device (Lumia 640 XL), but works fine when I run the exact same UWP project as PC (Local ...
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0answers
201 views

Improving Shadow

I need to improve the shadows in my scene. At a first look they don't look too bad: They look awful when the camera gets closer to them, showing weird artifacts. I would like to know what are the ...
0
votes
1answer
257 views

How do I write to a 16-bit depth buffer using Monogame and HLSL?

I'm working on shadow mapping. Part of the implementation involves drawing 3D models to a depth buffer with recommended 16-bit depth. To that end, I'm first creating a render target as follows: ...
0
votes
1answer
369 views

A shader that casts shadows, doesn't receive shadows and doesn't render any textures/models at all?

Bit of a strange one but I'm in the situation where i need a shader to essentially render nothing and cast a shadow! I found this though some googling but sadly that casts shadows onto itself which ...
0
votes
1answer
221 views

Shadow Shimmering When Moving Objects

I am having a shadow shimmering in my scene when using a shadow mapping technique. I know that there is a lot of posts over the internet dealing with this subject but my issue is slightly different. ...
0
votes
0answers
490 views

Unity : orthographic camera and shadow

When using an Orthographic Camera, the shadows appear to be of poor quality. How can I display smooth shadows?
3
votes
0answers
105 views

How can I fix this shadow slicing the mesh on Android?

I have a golf ball in my Unity game for Android, which is an icosphere (imported from blender) with a baked normal map. There are 18 tracks located in one level around the (0, 0) coordinate, rotated ...
0
votes
1answer
1k views

Shadow casting in 2D OpenGL

I´ve read several articles, tutorials about shadow casting and I think that I understand the way how it works. However I miss some of the steps. Here is included my order list: Fill framebuffer with ...
3
votes
1answer
2k views

Pixelated shadows in Unity

I have tried everything I can think of and all the solutions I could find on forums, but I haven't been able to fix this problem. I have a point light that is shining on several spheres which are ...
4
votes
1answer
364 views

How to receive shadows on animated object In optimize way?

I've been trying to add shadow to my flag that animated In my vertex shader but after adding shadow , my shadow is fixed and does not follow the animation of the flag. for adding shadow I use below ...
3
votes
1answer
1k views

Rendering 2D shadows in shader

Update: I am getting slightly better results by modifying the shader so that it sets a flag on entering a obscured region, and then only sets the fragment to black if the ray casting exits the ...
1
vote
1answer
523 views

Mesh from MagicaVoxel cast a strange holed shadow

I have a problem with any mesh I import from MagicaVoxel into Unity. As you can see from the screenshot below, the mesh on the left cast a shadow that has holes in it. That's a basic 7-voxel mesh ...
1
vote
1answer
376 views

Shadows are choppy on Android, but look fine in Unity Editor on my PC

Here is a gif of what I'm seeing with my shadows on my Android device: https://gfycat.com/VapidTestyFrigatebird That shadow looks perfectly fine from any angle / distance in my Unity editor, however....
2
votes
1answer
87 views

How does one model the sun in a ray tracer?

How is sun modeled when doing ray-traced rendering? Is it part of the scene, like a sphere with a centre in some far location or it is just considered as a point? Also regarding sending shadow rays ...
1
vote
1answer
44 views

Is there anyway to filtere a texture in glsl that turns stair like texels into smooth lines

I'm trying to filter a static, low resolution shadowmap. Unfortunatly, it doesn't look smooth, because of the way the default trilinear filtering works. It does have a smooth transition from light ...
0
votes
0answers
476 views

real time lights and high quality shadows in webgl build

I have a game in which there are a lot of objects constantly moving around and a lot of real time lights with their setting set to highest, I'm building my game as webgl and this is costing me a lot ...
1
vote
1answer
68 views

Softshadows create graphical errors

I have been implementing soft shadows into my game engine and it all looks ok in the beginning, but when I rotate the camera I get this... https://puu.sh/rQ7yG/8cd692aaab.png When I move around I also ...
2
votes
1answer
2k views

Cave lighting in Unity

I have a cave that is inside a mountain (one mesh) that I created in Blender. I would like to make the cave quite dark inside so that either the player can light it up, or it is lit up with things ...
1
vote
1answer
339 views

Particles not rendering over projectors

I am using projectors for shadows...When I use particles for bike speed up i.e., nitro speed the particles get cutout by those shadows.... Here is screenshot of it, Here is my shader code of ...
2
votes
1answer
365 views

Omnidirectional light (point) shadow mapping bug: everything's lit up white

I am facing a really frustrating problem. After looking at a lot of tutorials (probably all existing on net, not kidding), i tried to do the point light shadow mapping using a cube texture. The ...
0
votes
0answers
172 views

how to prevent stretched vertical shadow in blob shadow which projected by Projector of Unity

I feel it's a ridiculous because projector's rotation of X is 90. the projector is a orthographic. how can i prevent that long stretch shadow in vertical side of a platform?