Tagged Questions

2
votes
3answers
312 views

Time of Day Lighting / Day Cycle

I'm trying to implement a simple "lighting" system that alters a value of light between 0.0-1.0, 1.0 is midday 0.0 is total blackness. Are there any "good" information regarding this particular ...
3
votes
0answers
105 views

Combining Effects

To be able to work efficiently with effects, isn't there a "good" way to combine multiple effects so that one effect handles stuff like "Multi texturing" and another controls the value like Ambient ...
0
votes
2answers
192 views

Tutorials for shadow mapping with multiple point lights in XNA [closed]

I've been trying to crack this problem for a while now and I'd like to know if there's a tutorial or two out there that can help me with this. I know how to do shadow mapping with a single light, and ...
6
votes
2answers
309 views

A big light with shadows

To have better texture2D quality in my 2D game, I had to recreate every textures with 300% of their original size. But the lights have to bright 3 times more. For lights, I'm using this : Catalin's ...
2
votes
1answer
340 views

Has anyone got the Krypton Lighting Engine working in MonoGame for Windows 8?

I've converted the core of the Krypton Lighting Engine so that it's compatible with Windows 8. The trouble I'm having when actually using it is that it can't load the KryptonEffect.xnb file. I'm ...
2
votes
1answer
138 views

Multiply mode in SpriteBatch

I have a "lighting" texture (black background with white or colours for lights) that I want to draw as a multiplcation operation. SpriteBatch.Begin can specify BlendState.Additive, but there's no ...
4
votes
1answer
237 views

How do I autogenerate gradient lighting?

I am trying to think of a way to generate a gradient like this picture: Something like this GetGradientTexture(360f,100(width),100(height)), or if i want a directional light (like a flashlight) ...
10
votes
4answers
883 views

How can I acheive a smooth 2D lighting effect?

I'm making a 2D tile based game in XNA. Currently my lightning looks like this. How can I get it to look like this? Instead of each block having its own tint, it has a smooth overlay. I'm assuming ...
1
vote
2answers
454 views

2-d lighting day/night cycle

Off the back of this post in which I asked two questions and received one answer, which I accepted as a valid answer. I have decided to re-ask the outstanding question. I have implemented light ...
3
votes
2answers
428 views

2D lighting theory: day-and-night cycle, spot lights at night

I am writing a rogue-like 'zombie' management game. The game map will be similar to Prison Architect. A top-down 50 X 50 grid. I want to implemented a day night cycle and during the night I would ...
1
vote
0answers
122 views

Light on every model and not in the whole scene

I am using a custom shader and try to pass the effect on my Models like that: foreach (ModelMesh mesh in Model.Meshes) { foreach (ModelMeshPart part in mesh.MeshParts) { ...
1
vote
1answer
197 views

multipass shadow mapping renderer in XNA

I am wanting to implement a multipass renderer in XNA (additive blending combines the contributions from each light). I have the renderer working without any shadows, but when I try to add shadow ...
8
votes
1answer
340 views

Drawing “Stenciled” Sprites and making them glow

Currently, in my game - I'm not using XNA's SpriteBatch to render anything(I am using Farseer Physic's Debug View), and I was wondering how I would render something like this: only using XNA. My ...
0
votes
0answers
314 views

3D Graphics with XNA Game Studio 4.0 bug in light map?

i'm following the tutorials on 3D Graphics with XNA Game Studio 4.0 and I came up with an horrible effect when I tried to implement the Light Map http://i.stack.imgur.com/BUWvU.jpg this effect shows ...
1
vote
1answer
423 views

how to modify shadow mapping in “3D Graphics with XNA Game Studio 4.0”?

So I've been following the tutorials from the book Sean James's "3D Graphics with XNA Game Studio 4.0", and have been doing fine until i reached the shadow mapping part. in this book it creates point ...
0
votes
2answers
494 views

how to make HLSL effect just for lighning without texture mapping?

I'm new to XNA, i created an effect and just want to use lightning but in default effect that XNA create we should do texture mapping or the model appears 'RED', because of this lines of code in the ...
0
votes
1answer
171 views

Drawing at negative coordinates in XNA?

I am trying to make a 2D isometric RPG and I kind of hit a wall when it comes to lighting. I was thinking of using shaders, if I manage to understand them.The problem I am anticipating is the presence ...
0
votes
1answer
196 views

Setting Krypton Light to Screen Pixels

So a few days back, I started playing around with Krypton XNA for 2D lighting in my game. I noticed in general, that spawning a light at (0,0) with Krypton causes the light to appear in, pretty much, ...
4
votes
2answers
665 views

XNA 4.0 - Normal mapping shader - strange texture artifacts

I recently started using custom shader. Shader can do diffuse and specular lighting and normal mapping. But normal mapping is causing really ugly artifacts (some sort of pixeling noise) for textures ...
2
votes
1answer
191 views

Deferred rendering with both Clockwise and CounterClockwise culling

I have a deferred rendering system that works well with objects that appear solid and drawn using CounterClockwise culling. I have a problem with Clockwise culled objects that are supposed to ...
2
votes
1answer
621 views

Light mask map and camera for static lights in XNA Platformer

Using the example for some basic light maps found here : http://blog.josack.com/2011/07/xna-2d-dynamic-lighting.html, I've managed to create a lightmap texture using individual lightmaps and display ...
1
vote
2answers
522 views

How does Minecraft compute lighting for it's non-block objects?

I was wondering how the creator of Minecraft went about lighting the objects (player and pickaxe) based on the lighting level around the player. I have implemented the ability to light the blocks ...
1
vote
1answer
266 views

How do I make light objects in XNA?

Here's my dilemma : I want to have light sources placeable by the player, in terms of lanterns. I know the best way to do this is to use pixel shaders, which I have done a lot of research and use ...
12
votes
2answers
3k views

How can I implement lighting in a voxel engine?

I am creating the MC like terrain engine, and I have thought that lighting would make it look a whole lot nicer.The problem is that the blocks are not being lit properly when a block which emits light ...
4
votes
2answers
2k views

2D XNA Tile Based Lighting. Ideas and Methods

I am currently working on developing a 2D tile based game, similar to the game 'Terraria'. We have the base tile and chunk engine working and are now looking to implement lighting. Instead of the tile ...
5
votes
2answers
307 views

How do walls affect lighting?

I have been trying to implement a simple form of lighting in my 2D game. In the screenshot, I don't think it looks very good, kind of just plastered over the top of the map. How would the wall effect ...
12
votes
4answers
2k views

How can I implement voxel-based lighting with occlusion in a Minecraft-style game?

I am using C# and XNA. My current algorithm for lighting is a recursive method. However, it is expensive, to the point where one 8x128x8 chunk calculated every 5 seconds. Are there other lighting ...
4
votes
0answers
209 views

2D Lighing in XNA [duplicate]

Possible Duplicate: How is 2D lighting implemented? I'm attempting to create a 2D game in 3/4th perspective (like Pokemon and the older Zelda games). The time has come for an attempt to ...
6
votes
2answers
619 views

Rendering collections of light sources

I have a small test environment where small point lights are scattered. Players should able to collect them. The collectible lights are rendered using a simple billboard technique where two triangles ...
17
votes
3answers
2k views

How can I create a lighting effect like this?

This is the most beautiful 2d lighting I have ever seen, and I'd like to perform lighting like this too. How do I do it? I don't care about the physics or how the particles are simulated - I only ...
1
vote
2answers
635 views

Getting a black scene with XNA, what am I doing wrong?

I'm new to XNA (ver 4) and I'm obviously doing something wrong but I don't know what. So far I have managed to model my scene (quite simple, just a bunch of squares which are calculated--there are no ...
43
votes
4answers
14k views

How is 2D lighting implemented?

I am wondering what the best way to approach a "lighting" effect in 2D games is. For instance, if my main character is glowing, what techniques can I use to complete the visual effect of the character ...