Comments on:

By: Sharky

Sharky — Fri, 03 Sep 2010 08:18:33 +0000

Thanks for that. Good to know.

By: Dan

Dan — Fri, 03 Sep 2010 00:46:28 +0000

The website is http://www.digitseven.com by the way.

By: Dan

Dan — Fri, 03 Sep 2010 00:45:58 +0000

If you’re looking for help on shaders, I’ve written some pretty basic tutorials for things such as ambient light, diffuse light, specular light, rim lighting, texturing, etc.

I break them down to the very smallest detail so it should help out!

By: Dan Lodge

Dan Lodge — Wed, 19 Nov 2008 19:56:21 +0000

In one of the early posts on here, riemer suggests that people looking into HLSL already [should] have a foundation in 3D programming.

I’m an artist who is interested in post process effects and NPR (non-photo realistic) shaders. A few less technical artists have told me that shaders are programmer work, but at the end of the day shaders are a visual thing, and i want them in my bag of tricks – ideally without having to dedicate masses of time learning irrelevant info.

By: Sharky

Sharky — Wed, 12 Dec 2007 07:21:21 +0000

I’m not strong on shaders myself, but you could start by looking at this Ziggyware post & HLSL links…

http://www.ziggyware.com/news.php?readmore=461

p.s. HLSL = High Level Shader Language = “Shaders”.

By: Hannes

Hannes — Wed, 12 Dec 2007 01:31:46 +0000

I am very new to XNA programming and I want to make a water shader for my game.
Can anyone help me?
Thanks.

By: John Hurliman

John Hurliman — Mon, 30 Oct 2006 11:01:09 +0000

Sharky thanks for the help. I went out yesterday and bought a book on Managed DirectX which covers shaders, and most everything applies to XNA with a few code tweaks. I have a basic XNA app written (video here: http://www.jhurliman.org/index.php/2006/sceneviewer-video/) and will try out your color tint pixel shader now.

By: Sharky

Sharky — Tue, 10 Oct 2006 20:28:12 +0000

Thanks John.

Yeah, I know how you feel.

I might be able to help you with the color tint thing. I don’t have the code in front of me (I’m at work), but from memory it was something like:

outputColor.rgb = outputColor.rgb * tintColor.rgb;

where tintColor is a global(?) variable Vector4 passed in to the shader using the Effect class at render time.

I believe this is equivalent to doing:

outputColor.r = outputColor.r * tintColor.r;
outputColor.g = outputColor.g * tintColor.g;
outputColor.b = outputColor.b * tintColor.b;

I will confirm, and blog it along with my Cloud.fx hlsl source code ASAP.

Stay tuned…

By: John Hurliman

John Hurliman — Tue, 10 Oct 2006 19:56:53 +0000

I would love to see a set of HLSL tutorials that start from the very ground up. I’ve found plenty of “here’s how to make a realistic water shader!” followed by 100 lines of code, with no explanation of what each part is doing. Start from the very ground up, such as how to add a color tint with a pixel shader, or do a very simple vertex modification with a vertex shader.

By: Sharky

Sharky — Mon, 09 Oct 2006 04:09:37 +0000

Ah yes, the “Jigawatt” indeed!