• Announcements

    • khawk

      Download the Game Design and Indie Game Marketing Freebook   07/19/17

      GameDev.net and CRC Press have teamed up to bring a free ebook of content curated from top titles published by CRC Press. The freebook, Practices of Game Design & Indie Game Marketing, includes chapters from The Art of Game Design: A Book of Lenses, A Practical Guide to Indie Game Marketing, and An Architectural Approach to Level Design. The GameDev.net FreeBook is relevant to game designers, developers, and those interested in learning more about the challenges in game development. We know game development can be a tough discipline and business, so we picked several chapters from CRC Press titles that we thought would be of interest to you, the GameDev.net audience, in your journey to design, develop, and market your next game. The free ebook is available through CRC Press by clicking here. The Curated Books The Art of Game Design: A Book of Lenses, Second Edition, by Jesse Schell Presents 100+ sets of questions, or different lenses, for viewing a game’s design, encompassing diverse fields such as psychology, architecture, music, film, software engineering, theme park design, mathematics, anthropology, and more. Written by one of the world's top game designers, this book describes the deepest and most fundamental principles of game design, demonstrating how tactics used in board, card, and athletic games also work in video games. It provides practical instruction on creating world-class games that will be played again and again. View it here. A Practical Guide to Indie Game Marketing, by Joel Dreskin Marketing is an essential but too frequently overlooked or minimized component of the release plan for indie games. A Practical Guide to Indie Game Marketing provides you with the tools needed to build visibility and sell your indie games. With special focus on those developers with small budgets and limited staff and resources, this book is packed with tangible recommendations and techniques that you can put to use immediately. As a seasoned professional of the indie game arena, author Joel Dreskin gives you insight into practical, real-world experiences of marketing numerous successful games and also provides stories of the failures. View it here. An Architectural Approach to Level Design This is one of the first books to integrate architectural and spatial design theory with the field of level design. The book presents architectural techniques and theories for level designers to use in their own work. It connects architecture and level design in different ways that address the practical elements of how designers construct space and the experiential elements of how and why humans interact with this space. Throughout the text, readers learn skills for spatial layout, evoking emotion through gamespaces, and creating better levels through architectural theory. View it here. Learn more and download the ebook by clicking here. Did you know? GameDev.net and CRC Press also recently teamed up to bring GDNet+ Members up to a 20% discount on all CRC Press books. Learn more about this and other benefits here.
Sign in to follow this  
Followers 0
Yura

?olor transition

5 posts in this topic

I want to make color transition from one point to another. By default, when I have one red point and one blue point, in the middle of the connecting line, I have violet. But is it possible to make color transition from red to blue, using different colors?

 

I have a rectangle, which consists of 4 points. 2 points are red and 2 are blue. 

 

[attachment=13041:2.PNG]   this is color transition buy default

[attachment=13042:1.PNG]   and this is what I want to do

 

 

 

 

 

0

Share this post


Link to post
Share on other sites
The easiest way to do this is to use some kind of lookup table. Determine an alpha value (0..1) on the x axis and use this alpha value to look up the mapped color in a 1d lookup table. This can be done on the GPU using some simple shader. Edited by Ashaman73
2

Share this post


Link to post
Share on other sites

To add to above solution, it isn't possible to "average" out the colors the way you are trying to achieve it in the colorbar fashion. So you do need separate buffer for each bar and use a color value for that. Ofcourse, getting the value of color to fill up each bar is easier to achieve by simply taking the leftmost and rightmost bar's color and breaking up into N components for N bars using Arithmetic progression logic or whatever suits you.

1

Share this post


Link to post
Share on other sites

I would just use a texture lookup, i.e. don't even bother providing colours for your vertices, just provide UV coordinates into a texture containing the colours you want with the colour steps you want.

 

If you didn't actually want the colour to step like the second image in the original post, then an alternative might be to convert your RGB values into HSV values in the vertex shader. They'll then interpolate through the hues, and you can convert back in your pixel shader. I suspect the texture approach is more straightforward.

2

Share this post


Link to post
Share on other sites
I have VertexBuffer filled with points (position and color).
Determining table is a good idea, but how to implement it to primitive? To many primitives - possible, but how to fill one (or two, as in picture) triangles with so much colors?
1 rectangle = 2 triangles Edited by Yura
0

Share this post


Link to post
Share on other sites
The easiest way to do this is to use some kind of lookup table. Determine an alpha value (0..1) on the x axis and use this alpha value to look up the mapped color in a 1d lookup table. This can be done on the GPU using some simple shader.

 

Please, tell me more details.  Maybe, you have some example how to do this?

0

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0