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Another Texturing Question

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Started by EasyGino October 23, 2003 07:49 AM

4 comments, last by EasyGino 20 years, 5 months ago

EasyGino

122

Author

October 23, 2003 07:49 AM

*Note DirectX I was wondering how I would input more then one texture into a scene? It seems that whenever I set the texture, the whole scene gets textures, regardless If I put in texture coordinates. I was trying something like:


{ 0.0f, 0.0f, 0.0f, 0xfffffffff, },

#ifndef TEXTURE
{ 0.0f, 0.0f, 0.0f, 0xffffffff, 0.0f, 0.0f, },
#endif

And then under my Render() function I have something like


#ifndef TEXTURE
g_pd3dDevice->SetTexture(etc.);
#endif

There is more to it then that but thats the jist of it. Basically what I wanted here is to texture my "floor" but not my "walls". But the floor code is within the same code that holds my walls. [edited by - EasyGino on October 23, 2003 8:52:58 AM]

Nik02

4,359

October 23, 2003 08:22 AM

Set "floor" texture.

Draw "floor".

Either set the "wall" texture or 0 in place of a texture to disable previous texture.

Draw "wall".

-Nik

EDIT: HTML mixed up

[edited by - Nik02 on October 23, 2003 9:23:00 AM]

Niko Suni

EasyGino

122

Author

October 23, 2003 08:38 AM

Does that mean I would almost have to get rid of my Render function and replace it with individual drawing functions? Or in the other case, your example 3, it says set the texture to 0? I'm not sure what you mean there.

[edited by - EasyGino on October 23, 2003 9:40:45 AM]

Nik02

4,359

October 23, 2003 08:56 AM

If you pass 0 as the texture pointer in IDirect3DDevice9::SetTexture(), it will disable the texture previously set on that sampler.

If you have a mesh of data, then you should have subsets anyway, which you can draw separately.
And if drawing directly from vertex buffers, you do have the choice of which vertices to draw per one operation.

-Nik

EDIT:
And of course you can do all these steps inside your render function

[edited by - Nik02 on October 23, 2003 9:58:38 AM]

Niko Suni

EasyGino

122

Author

October 23, 2003 10:36 AM

I need some code :D

Ok so say I do a
SetTexture(0, &pointer);
DrawPrimitive(TriangleList, 0, 4);
SetTexture(0, 0);
DrawPrimitive(TriangleList, 5, 12);

and the first four is what I want textured, Will that work.

I dont have the API''s and im not sure what the 0 and 5 mean, but im assuming its the starting point.

Nik02

4,359

October 23, 2003 11:47 AM

The second parameter of the DrawPrimitive is the index of the first vertex you want to use.
Third is the number of primitives to draw, in your case triangles.

pDev->SetTexture(0, pFloorTexture); //set the floor texturepDev->DrawPrimitive(TriangleList, 0, 4); //draw 4 _triangles_ as floor.pDev->SetTexture(0, 0); //discard the wall texturepDev->DrawPrimitive(TriangleList, 6, 12); //note the offset 6, because a 4 triangle floor probably uses at least vertices indexed 0...5.

-Nik

EDIT: You don't have the APIs? Download the sdk

It'll be helpful!

[edited by - Nik02 on October 23, 2003 12:52:55 PM]

Niko Suni

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