Colorize with a given color a texture

Posted by Pacha on Game Development See other posts from Game Development or by Pacha
Published on 2014-05-31T20:59:42Z Indexed on 2014/05/31 22:05 UTC
Read the original article Hit count: 310

Filed under:

glsl

|

color

I have a texture and I want to "colorize" it with a given color, lets say cyan (#00ffff) or purple (#800080). What I want to do, is get all the pixel values from the texture, and remove the color and keep the "brightness" and "saturation" and apply to the desired color. There is a tool in GIMP to do this called Colorize (Colors -> Colorize.. while editing), I made an example below.

This is will all be done in a shader (GLSL), although this is probably a general algorithm.

enter image description here

© Game Development or respective owner

Related posts about glsl

How to debug a GLSL shader ?

as seen on Stack Overflow - Search for 'Stack Overflow'
I need to debug a GLSL program but I don't know how to output intermediate result. Is it possible to make some debug traces (like with printf) with GLSL ? >>> More
How to update a uniform variable in GLSL

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi All, I am trying to get update the eye position in my shader from my appliaction but I keep getting error 1281 when I attempt this. I have no problems after the initialization just when i subsequently try to update the values. Here is my code: void GraphicsObject::SendShadersDDS(char vertFile… >>> More
GLSL check if fragment is on geometry

as seen on Stack Overflow - Search for 'Stack Overflow'
I am currently writing the positions of my geometry to the RGB channels of gl_FragColor and I would like to write 1.0 to the alpha channel if the fragment is part of geometry, and 0.0 if its empty. Is there a simple way to tell if a fragment is geometry or not? Maybe through gl_FragCoord.z? thanks >>> More
Implementing your own depth buffer with GLSL

as seen on Stack Overflow - Search for 'Stack Overflow'
I need a datastructure of the same size as the normal depth buffer and I need to be able to read from and write to it in a shader. Is this possible, and what does this datastructure look like? >>> More
Passing multiple Vertex Attributes in GLSL 130

as seen on Game Development - Search for 'Game Development'
(note this question is closely related to this one however I didn't fully understand the accepted answer) To support videocards in laptops I have to rewrite my GLSL 330 shaders to GLSL 130. I'm trying to do this but somehow I don't get vertex attributes to work properly. My 330 shaders look like… >>> More

Related posts about color

ASP.NET Web API Exception Handling

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
When I talk about exceptions in my product team I often talk about two kind of exceptions, business and critical exceptions. Business exceptions are exceptions thrown based on “business rules”, for example if you aren’t allowed to do a purchase. Business exceptions in most case aren’t important to… >>> More
Design by Contract with Microsoft .Net Code Contract

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
I have done some talks on different events and summits about Defensive Programming and Design by Contract, last time was at Cornerstone’s Developer Summit 2010. Next time will be at SweNug (Sweden .Net User Group). I decided to write a blog post about of some stuffs I was talking about. Users are… >>> More
Use Extension method to write cleaner code

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
This blog post will show you step by step to refactoring some code to be more readable (at least what I think). Patrik Löwnedahl gave me some of the ideas when we where talking about making code much cleaner. The following is an simple application that will have a list of movies (Normal and Transfer)… >>> More
Setting color in two different ways @*android:color/color1 vs @android:color/color1

as seen on Stack Overflow - Search for 'Stack Overflow'
I have seen this example: @*android:color/secondary_text_light What's that * asterisk doing there? What is the difference when using or not? >>> More
Flex 3 color picker no color value

as seen on Stack Overflow - Search for 'Stack Overflow'
I need "no color" value in flex 3/4 color picker component. Here are some options I've investigated: 1) External componet. Searched a lot but didn't managed to find a suitable one. There is a great color picker that meets my needs completely, but it is in action script 2 format. I need as3. 2) Enhance… >>> More