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Questions tagged [color]

Color is the visual perception of light by humans into named categories, commonly "red," "green," and "blue."

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34 views

Does GPU mipmapping assume the texture es gamma corrected?

I have been reading the Real Time Rendering book and stumbled upon this paragraph: For textures encoded in a nonlinear space (such as most color textures), ignoring gamma correction when ...
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1answer
175 views

Why is enabling GL_FRAMEBUFFER_SRGB making the colours brighter?

My understanding of gamma correction is as follows: We want to do colour math in linear space so we can lerp etc. between colour values and get the results we expect. But human eyes don't have a ...
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1answer
42 views

change color to rgb in c# unity

So I am trying to change my color of my sprite to a rgb color. Now I can just change it to a color like red, black or blue... m_spriteRenderer.color = Color.blue; ...
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1answer
69 views

Can I linear interpolate color along both the X and Y axis of a circle instead of using the distance formula on each individual point?

I've been unable to make it work and I'm not sure whether it's a problem with my code or if this can even be done. I'm sure there is a way to prove whether it is possible mathematically but I don't ...
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0answers
60 views

GetPixel() doesn't return properly the values

So I'm trying to use GetPixel() function to get which colors is the texture as a value of x and y. So far it works well but it only return 1 color, being unable to get the rest of the colors of the ...
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0answers
31 views

How to do Colored Lights in CIE XYZ/LUV-like Space?

I've a 2d background, some sprites, blitted onto it. And over all that in the final pass I draw colored lights, to make projectiles look cooler. Basically I apply a classic lightmap, which is colored ...
2
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1answer
67 views

Triangular Metric

Given a point inside a unit equilateral triangle, how does one rotate it across the triangle perimeter? I.e. the triangle outline serving the same purpose as circle's circumference. That is actually a ...
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1answer
24 views

Color of Image changes to white between 2 positions using Color.Lerp - Unity

Hi I have an empty object barHolder that I move between 10 and 98 on x-axis. It has 2 child ...
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1answer
168 views

Unity Vertex Color Shader with Transparency

I'm trying to achieve a simple effect: I have a cube mesh and I want some of the vertices to change color. In this case, I want it to form some sort of a gradient where the unchanged vertices are set ...
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1answer
18 views

Easy way to generate colour-per-vertex models for input to Blender

I procedurally generate 3D planet models that I would like to import into Blender. I use colour per vertex rendering in my shaders (In practice, I use the same colour for all vertices of a face, but ...
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2answers
117 views

Problem with Material Parameter Collection Reference Variable in Set Scalar Parameter funcion

I was following a tutorial on using GameInstance. Where the guy in the video would teach how to choose the color of the ship by clicking a button on a level (x), so as to affect the ship on another ...
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2answers
51 views

how to loop color list spriterenderer

I can already make one for (int) normally, but I'm trying to create a sprite renderer loop using (i ++ / i--) sorry, I do not know the names for this condition but it's showing a mountain of errors <...
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0answers
20 views

Why use a quad background over a camera background

I'm quite new to Unity and after looking at a few tutorials for 2D games, I'm noticing people tend to use a Quad for their background colour. What is the benefit of this over just changing the ...
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1answer
535 views

Programmatically generated mesh vertex colors not showing up in Unity?

I'm sorry if this is an obvious thing to solve but I just can't figure it out...did I miss something...I've generated a mesh and during vertices generation I've also set its colors (and colors32 just ...
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1answer
598 views

What makes a shader function with a LineRenderer?

A LineRenderer has both Material and Color properties. But many shaders do not work, ie the line will not respect the Color property, or the line will show black (regardless of the materials having ...
2
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1answer
87 views

How can I create color fonts to be used in Unity?

I've been searching, downloaded a couple programs that lets you convert images into fonts, but none let you obtain the color. They all switch them to black and white. While searching the internet, I ...
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1answer
102 views

Running OpenGL app on Windows XP x86 produces incorrect texture colors

I'm working with the Cen64 emulator and I compiled from source a x86 version that operates fine on Windows 10 x64. As soon as I run it on a Windows XP x86 machine the colors are then all incorrect. ...
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1answer
173 views

How can I use the colours of a swatch in a script?

In Unity's editor I have set a swatch with some colours that are used throughout our game: This swatch is saved in a file in the project's Assets folder: ...
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1answer
72 views

Why only few parts of the 2D sprite change their colour when I apply sprite color in Unity?

I'm making a stickman 2D game where I have different sprites for the player. But when I try to change the Sprite Renderer Color, it only changes few pixels of the sprite and the rest stays black as ...
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0answers
36 views

How to apply a visual filter to what I am drawing?

I'm looking to apply a sepia filter to what I'm rendering. Perhaps we could just apply the filter to the view or pass it to the draw method to draw everything with the filter (I'm using one draw ...
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1answer
85 views

How to paint regions of a map with visually different colors

I'm learning some concepts of procedural content generation. Now I'm generating a map with regions and each region has a diferent colors generated in a pseudo-random way. My problem right now is ...
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1answer
67 views

OpenGL additive vertex color mode

Surely OpenGL has a way to set the vertex color mode. By default it is multiplication. When I have an existing texture on a quad to represent a player in my game, I want to add color to it. As of ...
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2answers
659 views

How can I efficiently change the color of a BufferedImage?

I am trying to change the color of a white BufferedImage image. I do know that you can use .setRGB(x,y,rgb) and simply run some ...
2
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1answer
251 views

Unity : Changing color of 2D sprite distorts sprite shape [closed]

In my 2D game, my circle shape for example, appears round, but when I change the color then it turns into a low poly circle with 8-16 points, more like a potato. Is there any way around this? ...
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0answers
523 views

Shadow & sorting issues with vertex colored PBR Shader Graph

I'm working on a custom shader using Unity 2018's new shader graph feature. Previously, I was using this shader, which worked great for awhile, but it ended up constantly breaking for seemingly no ...
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1answer
4k views

draw a box with transparent background (outline) in unity

I am trying to draw an outline (a transparent box with colored border essentially) I have the following code adapted from here ...
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2answers
190 views

What exactly is the “blend factor” t in Color.Lerp?

I had a bit of a look around and couldn't see anywhere this was addressed, my apologies if it has been. In Color.Lerp, I understand that the 3rd parameter t is not in fact the time that it takes to ...
3
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0answers
207 views

Weird libGDX BitmapFont Color Change (And Alpha) Bug

I want to change the color of my libGDX BitmapFont, but it can't change it. The font is generated with Hiero v5 (Lastest as I Know) but the color of the font doesn't change. Here is the example code, ...
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1answer
338 views

Changing the color data of an instance of a shared texture? MonoGame

I want to load multiple instances of a texture on the screen and be able to change the color of each one individually by clicking on it. I've tried many different ways and currently I'm creating two ...
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1answer
54 views

Quality deterioration on a device

I am using Unity. When I try the game out in the IDE everything looks pretty good: But when I am trying to play the same game on a device the quality becomes a great deal worse and you can see it for ...
4
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2answers
237 views

How do I implement 2d color animation like in this video?

link on youtube at 1:38 - 1:42, purple things (I think this is particle system) that come off from the moon. Someone else had decompiled the game in the past, and the assets shows that the dark blue ...
2
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1answer
2k views

Sprite changes colour when imported into Unity

I create some simple geometrical shapes in Inkscape, then export it to PNG and import into Unity. Positive example: I make a rectangle of colour hsva(0, 0, 32, 255), export it as a 32x32 PNG image ...
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1answer
154 views

How to achieve this kind of look of a cube in a most efficient way?

It might be a trivial question, but I couldn't come up with a simple solution. I need to create a cube like on the image below in Unity. As always, I target mobile ...
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2answers
292 views

Why do I get odd color effects in smooth transitions with OpenGL?

I am making a planet generator, and when I go too close to the planet, the smoothly colored surface has striations. Very visible striations, as seen in the attached image. The color transition is ...
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1answer
1k views

How can I accurately lerp Colors over seconds?

I have some code to lerp between two colors over a set number of seconds, and the lerp works fine: ...
1
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2answers
2k views

2D racetrack collision bounce using angle of reflection (bounce angle)

I am currently working on a race game where I want to define the collision of my vehicle with the outer and inner borders of the track. If that happens to be the case I want to vehicle to bounce of ...
36
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4answers
9k views

Should I use “conventional” colors to represent item rarity?

I'm making a new RPG that has loot. In fact, a majority of the game is based around loot. It's going to have colored borders to denote the rarity of the loot as it's drawn. WoW uses Grey, White, ...
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2answers
597 views

Flipping Textures in Modern OpenGL

How do I flip a texture in modern OpenGL (3.1+)? This is the unflipped render, keep in mind it is drawn with 8x8 tiles from a texture atlas, so I edited green squares below him into the image to ...
0
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1answer
48 views

Game Maker (and others): what data type is colour and how can I compare them?

In Game Maker, and I imagine other engines, one can "make colour" by defining either the red-green-blue values of the colour or its hue-value-saturation. I want to create a program that can compare ...
3
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1answer
2k views

How do I get the object color?

I want to get the object color, when I start the game. How do I do this? ...
1
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1answer
391 views

Can ARToolKit be used for color detection?

I'm trying to make an app that will show an object from different sides, but the target will be too small for any real marker detection. Think of a cube with one or two centimeter sides. The camera ...
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2answers
138 views

Game Design: Colour units per team or per unit type?

In an RTS game where the units are viewed from the top so that they appear relatively small on the screen: What would be the best game design? Colour the units per team, for example: enemy is always ...
3
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2answers
194 views

The meaning of colours in other cultures

According to http://www.color-wheel-pro.com/color-meaning.html and many other western websites certain colours have meanings. To summarise the meaning of colours in the context of a typical RTS game: ...
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1answer
95 views

glColor3f() 0.0 = no intensity 5.0 = full intensity?

I have a very weird behavior of openGL's glColor right now. I've wasted hours to detect why my line colors acting so weird until I found out that 0.0 rgb values is zero intensity and 5.0 lead to full ...
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1answer
814 views

What is Surface.set_colorkey() in Pygame

In pygame, what does Surface.set_colorkey() do? Explain it in a very easy way please. Also, what exactly does it do? I heard it makes parts that are the same color as the colorkey transparent, but ...
2
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1answer
206 views

Color Correction in DirectX

After playing games like Star Wars Battlefront & GTA 5 I was wondering how dev's implement Color Correction in their Engines. I know that this can be done through the use of 3D LUT's but I was ...
2
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1answer
494 views

Color spaces: Should colors be converted to linear color before applying premultiplied alpha?

For instance, when loading an image that is SRGB, which of these is correct? Simple premultiply: Take SRGB color from file and multiply RGB by alpha or Convert to linear before premultiply: Take ...
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1answer
181 views

Color mapping of difference

I have two arrays A and B. I want to do color mapping of their difference A - B. So far, I ...
2
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0answers
507 views

Linear color workflow with render to texture - Banding in alpha channel?

In OpenGL, I am using GL_SRGB8_ALPHA8 for the OpenGL internal texture format for my textures and render targets. This eliminated some banding I was seeing in dark ...
2
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1answer
73 views

How to save one color channel, taking only 1 byte per pixel?

How can I save only one color channel, such that it would only take 1 byte per pixel? I only want to save the alpha channel and apply colors later using a custom shader. But all the formats I tried ...