Game Development

Questions tagged [shadows]

Ask Question

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.

52 questions with no upvoted or accepted answers
Newest
Active
Bountied
Unanswered
Filter by
Sorted by
Tagged with
7
votes
0answers
301 views

How to draw Shadow Volumes in one draw call?

I've got a simple app that draws 3D cubes using instance rendering and I'm implementing Shadow Volume. Each cube's vertex, uv, normal and index data are statically stored in 4 vertex array buffers. On ...
5
votes
0answers
178 views

Virtual infinite plane in shadow map

I have a WebGL deferred rendering pipeline, where I'm rendering shadow map with VSM technique. The goal is that the scene, or model, is hovering in space, and in addition to casting shadow on itself, ...
4
votes
0answers
701 views

Shadow mapping - Can't get the right texture coordinates

I'm trying to implement shadow maps for Spotlight's, but alas I can't get them to work. I have verified that my fragment shader is getting the shadow map texture. I can sample from it in the ...
4
votes
0answers
727 views

Shadow map shimmering, indexing outside the shadow map

I have tried to reduce the shadow shimmering/flickering using the technique described here: http://msdn.microsoft.com/en-us/library/windows/desktop/ee416324%28v=vs.85%29.aspx It works as I want and ...
4
votes
0answers
949 views

implementing shadows into my 2D GLSL-based lighting system

I'm writing a lighting system in OPENGL using GLSL shaders, and I'm pretty happy with the light casting I have so far, but I'm totally stuck on casting shadows. Everything I've found online on this ...
3
votes
0answers
110 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 ...
3
votes
0answers
214 views

OpenGL ES 2.0 not drawing images with shadows

I'm using OpenGL ES 2 to program a simple game 2D for Android mobile phones. I'm coding the rendering portion of the software, using the GLES20 default library. All my sprites are rendered from a ...
2
votes
0answers
72 views

Consistent Shadow Map Filtering

I want to filter my shadow map generated by PSSM, but the problem is that I have a inconsistent filter size. The problem is that the shadow map sources rotate to find the best fit for the camera ...
2
votes
0answers
143 views

Instancing meshes messing up scene lighting

I've been rendering a scene (some objects over a large field of grass) to test shadow mapping which is working fine. But when I use instancing to "gain" performance, I not only get a decrease in ...
2
votes
0answers
367 views

PSSM and tightening the split frustrums

So I have implemented PSSM which currently does not care about the objects in the scene, meaning alot of resolution is wasted on empty space. This image shows the bottom two splits wasting alot of ...
1
vote
1answer
2k 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 ...
1
vote
0answers
51 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 ...
1
vote
0answers
697 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 ...
1
vote
0answers
227 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 ...
1
vote
1answer
376 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 ...
1
vote
0answers
152 views

Shadow Mapping, why does my shadow change size and position when I rotate my light?

I have looked far and wide for this and have not found any issue like this, so far. Basically, when my light is at a certain angle my shadows seem to be correctly positioned and scaled, yet if I ...
1
vote
0answers
275 views

Front Face Culling with Shadowmapping

To avoid shadow acne I usualy use front face culling which works great. But for my current implementation the mesh is a quite complex terrain (depending on the lod level) and than the shading (dot ...
1
vote
0answers
1k views

Smooth+Flat shaded meshes cause shadow artifacts (understanding the source of the problem)

I'm using blender to create assets to use in Unity3D, and I'm having some trouble understanding how the smooth/flat shading interacts with shadows, I'm sorry if it has been asked before, but all the "...
1
vote
0answers
57 views

Directional light view frustum stabilisation

Calculating directional light view frustum based on scene objects(bounding frustum) results in noticeable scene jittering on camera movement in CSM and non-CSM rendering code paths. What are the ...
1
vote
0answers
189 views

Why would an ambient occlusion (AO) shader's performance be dependent on light direction?

One of my favourite games recently implemented ambient occlusion as a graphics feature, which appears to perform very well in most circumstances - except during sunrise and sunset. As someone who is ...
1
vote
0answers
1k views

How can I get shadows to appear correctly when using a custom projection matrix?

EDIT: This has been officially marked as a bug in Unity. If anyone else has this issue, you can vote here for Unity to fix it. As mentioned in this thread, I'm using a custom projection matrix in ...
1
vote
1answer
960 views

Depth texture white in shader

I am trying to implement shadow mapping into my project and am stuck at this problem: If I'm reading the shadow map values with glReadPixels and linearize those ...
1
vote
0answers
199 views

How can I modify my procedural shadows to also show some of the walls?

I'm rendering shadows in Libgdx with the method from this tutorial. I think it's a nice and easy method. I render all my shadows in a framebuffer, then invert it. Before invert: After Invert: ...
1
vote
0answers
387 views

Unity Pro - Shadow rendering issue

I am using Unity Pro 4.2.1f4 and I always have this sort of glitch. This is due to the shadows and the bias. Even with a low bias this is happening. I've found a thread that talks about that but I ...
1
vote
0answers
409 views

Simple shadow casting in 2.5D game

I am trying to build simple game and I just bumped on some logical problem that I am sure many of you already came across. I have a plane - floor and several sprites-trees that have tree texture on ...
1
vote
0answers
691 views

Dynamic 2D soft shadows with concave polygons?

I've implemented dynamic 2D soft shadows from this article on gamedev.net. It uses an image for the penubmra and is fast, physically accurate and looks good in most situations, so I really like the ...
1
vote
0answers
427 views

JOGL Hardware Shadow Mapping Transparent Shadow Texture

I'm using hardware shadow mapping on JOGL based on the demo(HardwareShadowMapping) supplied by the distribution. After generating the shadow texture from lights point of view, I apply it to my scene ...
1
vote
1answer
176 views

Can't run Nvidia PracticalPSM sample in debug mode

I want to add PSM (Prespective shadow map) to my engine but I have problems with that. I think the problem is somewhere in my math code so I want debug Nvidia PracticalPSM sample and compare the math ...
0
votes
0answers
23 views

Is it appropriate approach to simulate shadowing via occlusion culling of lights?

I have own deferred renderer and a scene with both closed and open spaces. I want to prevent light passing though solid objects. For example, there can be a house with a lot of point lights inside. I ...
0
votes
0answers
10 views

Unity : I can't turn on my realtime shadow

I just add new project using 2019.4.4f1 and setup for Android build. Nothing fancy, i add a plane and sphere. Put sphere on top of plane. There's only 1 light (directional light with default setting). ...
0
votes
0answers
233 views

How do you make lights affect 2D sprites in a 3D environment using Unity's URP render pipeline?

I'm using Unity, URP and have 2d sprites characters in a 3D environment. I want 2D sprites to be affected by lights/shadows like the rest of the environment. -I know if I use a 2D renderer I can use ...
0
votes
0answers
17 views

How variance shadow maps moments fall into Chebyshev's inequality

I'm having hard time understanding how the moments fall into place into Chebyshev's inequality. I'm reading about the technique in the following article. In the article the following is written: ...
0
votes
0answers
38 views

Strange lighting bug in my game

I've been experiencing this lighting bug in my game. As you can see there is a box around the player on the back wall and underneath it. the platform and back wall are 3D objects and the player is a ...
0
votes
0answers
16 views

SMR shadow fade by script?

I want to make fade for my player shadow. I don't know if it's possible or not. In my skinned mesh render there is "Cast shadows" with four options "Off, On, Two sides, and Shadows Only". How to do it ...
0
votes
0answers
299 views

Unity Light Baking for Best Balance between Performance and Visuals

I'm trying to optimize my Unity game. I have static objects, dynamic objects and (only) static lights. I wish to fully pre-compute lighting and shadows for the static objects while still ...
0
votes
0answers
35 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
votes
0answers
54 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
votes
0answers
595 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 ...
0
votes
0answers
88 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
votes
0answers
52 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
0answers
74 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 ...
0
votes
1answer
314 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
619 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?
0
votes
0answers
507 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 ...
0
votes
0answers
188 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?
0
votes
0answers
136 views

XNA/C# Shadows look strange in orthographic

I have implemented shadows in to my game engine. They look fine when rendered in projection mode as a projected light, however I get a strange "blocky" look when they are put into orho'. I will be ...
0
votes
0answers
332 views

How to move vertices of matrix in order to cast a 2d shadow?

I am trying to add shadows to my 2D xna game. Currently I have created a "shadow" using the texture of the caster with a transparent gray color, rotated, and stretched using a matrix. This, though, ...
0
votes
0answers
132 views

Box2D—Dropshadow

I am about to create a Jump'n'run game using Box2D for the physics. I am asked to add a Dropshadow to the main Character, but as I noticed this could become quite complicated. Basically the Light ...
0
votes
0answers
198 views

Cast shadow without rendering object

I'm new to UDK, and am using it to develop a survival-horror game based heavily on shadows. My question is short: is there a way to create an actor that, when rendered, ONLY renders its shadow (not ...
0
votes
0answers
85 views

“Blinking” graphical bug when rotating shadow matrix

So, we have implemented Krypton shadows into our code for our 2D game, and it's working beautifully. Only issue is that we're running into a bizarre graphical bug when rotating the shadows with the ...

1
2