Shaders: ConstantTable.SetConst dynamicly [SOLVED]

**NecroDOME** · 09-05-2007, 10:01 PM

System: Windows XP
Compiler: Turbo Delphi
Api: DirectX 9

Hi there,

I still working on shaders, but progress is very slooooow...

so here is my question: how do I set my shader constants dynamicly??

This is what I want to do

Code:

ConstantTable.SetMatrix&#40;GetD3DDevice, @ConstName, Matrix&#41;

When I replace ConstName with a string (eg 'Proj', for projection matrix (doh)) it works (well, it doesn't return a failure

).
I think its because it wants to have a D3DXHandle, and not a string pointer... so how can I retreive that handle quikly??

greetz Michiel

LP · 10-05-2007, 02:00 AM

Although my knowledge is a bit rusty when working with shaders manually (I'm using effect files instead), I think you can obtain the handle of constant like this:

Code:

var
 Handle&#58; TD3DXHandle;
begin
 Handle&#58;= ConstantTable.GetConstantByName&#40;nil, PChar&#40;'MyVariable'&#41;&#41;;
 ConstantTable.SetMatrix&#40;GetD3DDevice, Handle, Matrix&#41;;
end;

**NecroDOME** · 10-05-2007, 08:09 AM

Cool

will try when I get home

**NecroDOME** · 10-05-2007, 05:46 PM

SOLVED!!!

yeah woohoow... finally shaders support

thnx Lifepower

**savage** · 10-05-2007, 06:20 PM

What no pics!!! You're banned

**NecroDOME** · 24-05-2007, 02:07 PM

Yo wanna see a pic?

not very impressive, but it's renderd with shaders

No plz unban me

**technomage** · 24-05-2007, 10:12 PM

Good work. I had a struggle with HLSL Shaders myself.In fact I'm still trying to get the textures working correctly (they appear corrupted).

Glad you got it working

**NecroDOME** · 07-09-2007, 04:24 PM

a bit late, but if you have problems with textures and directx, it could be wrong assignment of the fvf. example:
fvf := Tex0 and pos would not work, as pos comes before Tex0 (in bit sequence)
try this for example
fvf := Pos and Tex0 (also in your shader, had the same problem, once)