The simulation of light and illumination in games, including its interaction with the environment. A core element of games that can bring out vivacity into otherwise static worlds.
-4
votes
0answers
44 views
Negating directional light's direction
Why we negate the direction vector of directional light when we calculating the light direction?
I am using this link to learn opengl: https://learnopengl.com/#!Lighting/Light-casters
But in ...
0
votes
1answer
41 views
Only 4 point lights display in unity
When ever I have more than 4 point lights in my scene, only 4 show up. Why does it do that? Is there anything I can do to show more than 4 at a time?
1
vote
1answer
35 views
Combining and drawing 2D lights in OpenGL
I have progressed to the lighting portion of my little framework and I managed to solve a few initial problems so now I'm left with the subtle weirdnesses.
At this stage I just have 2 lights - the ...
0
votes
0answers
14 views
Unity2D: How to disable all lights and add a spotlight which follows my player?
this is my first 2D project. back in 3D i could just simply delete the light and add new ones as i please but here there are no light items and the camera has its own light somehow. i want to make ...
0
votes
1answer
45 views
Tile set showing grid with lighting
Hi so I have this tile set generated procedurally at the start of the scene. When I activate the point light in the middle of the screen I keep getting this grid in the game view, i tried changing the ...
1
vote
1answer
96 views
creating a simple cartoon like light effect
I could like to create a really simple light engine that does not eat to much CPU and will produce this effect:
I am using libgdx for my game with box 2D light (which is too heavy for my needs). I ...
0
votes
0answers
8 views
ADS lighting Materials list?
I was wondering if anyone knew a good resource for looking up ADS materials? Something similar to below except a more extensive? Or is this something people just try to eyeball and figure out for ...
0
votes
0answers
69 views
Light 2D and Performance issues
I want to make a 2D game that will use 2 kinds of lights (Spotlight and Point Light). I need the game to be completly dark unless there is a light in the area and the light to not pass through walls. ...
1
vote
2answers
74 views
Lighting large scene with dynamic lights - Unity3D
I am working on a game project where most of the action takes place in a large scene that is built to look like a space station. Because it is all technological and enclosed, I can't use a directional ...
0
votes
0answers
13 views
Filtering the target for lights
I'm in process of writing my own 3D engine in WebGL using assets of one popular game. I do not use any existing graphing library(no Three.js or others), I operate with pure WebGL calls. I managed to ...
-1
votes
2answers
71 views
Unity - how to remove standard sky but keep the lighting?
How can I remove the standard Unity sky (to have an empty space with no texture around my scene), but keep all the lighting effects from it?
0
votes
0answers
55 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
1answer
47 views
Smooth Lighting Falloff
So, I'm having some issues with lighting in my Unity game. I had implemented torches, which seem to be working fine, but I have a creature (gelatinous cube) that I've put spot lights facing to give ...
1
vote
0answers
97 views
Lighting doesn't work properly in WebGL build only at one place
So I have a 2d game where a player walks around the level (top view) with a flashlight in front of him. Everything works fine in the editor, however whenever I build it for WebGL and test it in my ...
0
votes
0answers
13 views
Strange glitches with VolumetricLighting test scene (Unity)
I was going to test the VolumetricLighting test scene, but I faced a problem.
After starting the game, I can see only some strange glitches on the screen.
Also I get an error message in the console: ...
0
votes
0answers
35 views
Implementing Phong Shader whith 8 lighting
Reference: Phong Shader
I want to use 8 lights (4 red, and 4 green) but my object always has no color . I want to get this result:
but my result is like this:
For frag code, I have:
#version 120
...
-1
votes
1answer
69 views
Realistic 3D Lighting in Unity
The game I am working on is in 3D, and I need to create a realistic looking recessed ceiling light, preferably without any 3rd party plugins or tools, as I am on a school computer.
What is the best ...
0
votes
0answers
53 views
Is this 2D light implementation with shaders good enough?
After some days reading and programming shaders in GLSL (and Allegro 5) I came up with the stages I will be using to render the lights in my 2D test game. My first goal is to reach something like what ...
0
votes
1answer
58 views
BRDF Incorrect specular highlights
I'm currently attempting to implement BRDF lighting, and am hitting a bit of a snag with my specular term - the specular highlights aren't rendering correctly.
To make things simple, I'm using a ...
0
votes
0answers
17 views
Combine diffuse map and lightmap into one texture file
Working with Unity, I'd like to do some more memory optimization. Currently, my 3D models have a diffuse texture and a lightmap, both at the same resolution and compression.
I was wondering if there ...
2
votes
0answers
190 views
Enabling OpenGL lighting seems to disable blending
I have the following code to set up for some 2D drawing using OpenTK. I originally wrote it without any lighting considerations, but later added the lighting block. This version of the code uses GL....
0
votes
1answer
35 views
Fine tuning light shader mechanics
I'm currently trying to implement the lighting technique described in this article.
I've done pretty much exactly what is done in the article. My technique is the same, and my shader is the same. ...
0
votes
0answers
38 views
Area Lights in DirectX
So after reading https://www.guerrilla-games.com/read/killzone-shadow-fall-creating-art-tools-for-a-new-generation (a guerilla games presentation on PBR) I noticed the Area lights as opposed to the ...
0
votes
0answers
55 views
Deferred rendering black screen
UPDATE: I have discovered something. If i change the final display to be respect the, for example, normal map it is showed for a instant before disappear and become all black again. Could it be a ...
3
votes
1answer
140 views
Light Attenuation Formula Derivation
I understand that when sampling the brightness of a given point on the surface, a certain cutoff needs to be taken into consideration.
Other words, when the light is further away, the intensity ...
0
votes
1answer
75 views
Specular Lighting Error
At the moment I am implementing Specular Lighting for my engine in DirectX on top of Diffuse Lighting. I am using a physically based technique and as you can see from the image below something is ...
0
votes
0answers
52 views
OpenGL harsh lighting on model
I'm messing around with textured shading, but it appears to be doing something very odd with the lighting.
Here is a little hat I made. It is the only textured model in the scene, the other models ...
0
votes
1answer
29 views
Problem with Basic Diffuse Lighting
So recently I have been learning how to implement Diffuse Lighting in DirectX and I have done so with the following code:
float4 PS(VS_OUTPUT input) : SV_TARGET
{
input.normal = normalize(input....
4
votes
1answer
131 views
Directional light type
I am currently trying to implement a specific directional light type.
This light type has been used in the game INSIDE and is called orthogonal spotlight (aka local directional light). I assume that ...
1
vote
0answers
35 views
Opengl - SpotLight shadow map issue
I have a light / shadow system that implements a spot light too.
Every lights are working fine, but the spot light is acting weird.
If i dont use any type of "shadow softening" method, it works ...
2
votes
2answers
115 views
2D Lighting From Sun
I have been developing a game for over a year now and I have successfully implemented the basic foundation for lighting, but there are still a few things I'm struggling with. The biggest issue right ...
1
vote
2answers
84 views
Problem with Diffuse Lighting
So I am currently implementing Diffuse & Ambient Lighting based off this tutorial:
https://www.braynzarsoft.net/viewtutorial/q16390-simple-lighting
I think I have implemented everything correctly,...
1
vote
0answers
149 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 ...
0
votes
1answer
63 views
How to achieve light effect on a car panel icons?
I'm making a car and I want to make lightable icons on its panel. I want to add 'on' and 'off' effect to them separately. The Sprites are plane objects, with one material and UV texture for each plane....
2
votes
1answer
98 views
Physically based shading - ambient/indirect lighting
I implemented a physically based path tracer after studying PBRT by M. Pharr and G. Humphreys. Now I'm trying to apply physically based rendering to real time graphics using OpenGL.
I want to start ...
0
votes
1answer
143 views
What is the best PBR Real Time Fresnel function
I'm working on my physically based renderer, and I've come to a sort of crossroads regarding the Fresnel factor. I'm having trouble finding the best way to represent it. I know that Schlick's fresnel ...
1
vote
1answer
49 views
Transform luminosity (Watt) to be usable in shader
I'm studying the color and the Luminosity of Stars.
I'm trying to figure how to transform information of Luminosity i perceive at a given distance to something usable into a shader.
For instance , ...
0
votes
1answer
56 views
How to generate a multiplier map for radiosity
I am following this tutorial: here
I am at the part where you are creating a hemicube.
I have got the code to render the scene into a texture and therfore an array.
Now how can I generate a so-called ...
5
votes
1answer
219 views
Is there any less expensive way to achieve this lighting effect?
I'm creating a game that is similar to Tibia on its projection:
But I want it, under the hoods, to be 3D, and extremely dynamic - meshes generated on the fly, statues exploding and turning into smoke ...
0
votes
2answers
75 views
Simplst possible TBN-Matrix giving weird results
I'm implementing normal mapping and was trying different techniques of doing that. All seemed not to give me a correct result (e.g. the normals point in weird directions). To find the problem, I broke ...
0
votes
0answers
183 views
How can I make realistic light effects in 2D game?
I want to develop a 2D game with realistic light effects. I need them to represent the weather phenomenons, and the part of the day (sunlight, moonlight lights of the stars, torches, lanterns etc.)
I'...
1
vote
0answers
46 views
Why do I get white highlights at the edge once light build complete?
Whenever I build my lights in Unreal, why do I always get white highlights at the edges? I can't seem to solve this. I get this problem with both static and stationary lights. Can someone please help? ...
0
votes
0answers
44 views
Does light source color defines its radiance?
My understanding is that a light source can emits wavelength in red colour; and the same red light source (viewed from the same angle) can have more intensity if it emits much more light flux and ...
0
votes
0answers
43 views
Dark image on Stochastic path tracing
I am trying to implement stochastic path tracing, where direct and indirect illuminations are evaluated separately. Below is an example of the direct illuminance with 4 rays per pixel and 16 shadow ...
1
vote
1answer
160 views
How can I make shadows darker in unity5 without changing light intensity?
I have a problem where I want the shadow cast by an object to be a well defined and dark one. However I have to do it without changing how illuminated the object looks so only increasing the intensity ...
3
votes
4answers
272 views
Determining how much of a tile is intersected by a ray to help calculate lighting and deal with shadow issues
I'm currently using the following steps for my lighting system
Calculate all the tiles along the perimeter based on the radius of the light
Cast a ray from the center of the light to each perimeter ...
0
votes
1answer
66 views
C++ OpenGL - 2D Lighting Around Object in a Pitch-Black Environment [duplicate]
I am making a 2D game in C++ with OpenGL where a maze is generated and you have to move the character through the maze and get it to the end. I have achieved all this, but now I want to make it more ...
0
votes
0answers
42 views
Unity Light passing through solid mesh made in blender
I am trying to figure out why light is passing through a solid mesh I created in blender.
The geometry is simple:
Cube with a bevel that has a 4 inner faces extruded transformed inward and scaled.
...
3
votes
2answers
333 views
Java 2D Lighting
Edit- ive noticed that the issue is caused when drawing to a bufferedimage
I've been struggling to create 2D lighting in my 2D sandbox game. I've been reading through multiple threads and have tried ...
3
votes
0answers
42 views
Light bounding geometry for deferred rendering
What is the best bounding geometry to use in a deferred renderer for each one of the following light types?
Sphere area light (obviously a sphere)
Disk area light (obviously a cone)
Rectangular area ...
