TBGL_EntitySetTexture

[Michael Clease]

I want to use different parts of my texture but at the moment I am stuck with using the whole texture or create multiple displayslists with the appropriate co-ords.

I can't see how you could add some options but maybe a new keyword instead

How about

TBGL_LoadTexturelist TextureFile, TextureIndexStart,TextureCount,SubX,SubY, TextureFiltering [, AnisotropicLevel [, TransparentColor ]

same functions as TBGL_LoadTexture but

TextureIndexStart = Starting Texture
TextureCount = number of textures
SubX = Size of tile X Axis
SubY = Size of tile Y Axis

what do you think ?

[Michael Hartlef]

I want to use different parts of my texture but at the moment I am stuck with using the whole texture or create multiple displayslists with the appropriate co-ords.

I can't see how you could add some options but maybe a new keyword instead

How about

TBGL_LoadTexturelist TextureFile, TextureIndexStart,TextureCount,SubX,SubY, TextureFiltering [, AnisotropicLevel [, TransparentColor ]

same functions as TBGL_LoadTexture but

TextureIndexStart = Starting Texture
TextureCount = number of textures
SubX = Size of tile X Axis
SubY = Size of tile Y Axis

what do you think ?

Hi Michael,

do you need this for 3D models or for 2D sprites? Later one is allready developed (in a variation) and will be available with the next TGBL update.

Cheers
Michael

[Petr Schreiber]

Hi Michael,

Michael said it

If you need it for something else, would you like this command to create multiple independent textures from one bigger?
In which order - row/column?


Petr

[Michael Clease]

What I am suggesting can be used for both 3D and 2D and its not for sprites.

would you like this command to create multiple independent textures from one bigger?

yes, column,row (x,y)

[Petr Schreiber]

Thank you Mike,

it should be relatively easy to do, thanks for the suggestion.

I have one idea - what about doing it like:

TBGL_LoadTexturesFromTiles fileName, startIndex, numberOfColumns, numberOfRows, TextureFiltering [, AnisotropicLevel [, TransparentColor ]

Why this way? Imagine you have texture, with 16x32 "subtextures".
When you change the resolution of bitmap ( but still having 16x32 subtextures ), using your original proposal you would have to recalculate tile sizes in pixels again.
My syntax is not resolution dependant, all dirty calculations will be done inside command and coder does not have to care.


Let me know,
Petr

[Michael Clease]

That looks good. thanks.

Was I right about Displaylist entities and changing co-ords is not possible?

[Petr Schreiber]

Hi Mike,

yes you were 100% correct.

This problem is very interesting generally, as all solutions have quite strong both pros and cons:
Multiple objects textured by image from bigger texture
+ easy to implement
+ one texture binded for multiple "graphics"
- might have performance hit in recalculating the coordinates
- filtering artifacts can occur ( I call it pixel bleeding but I guess that is not proper term )
- does not allow repeating

To do it now via immediate mode ( BeginPoly/EndPoly ) is overkill for lot of objects, using M15 commands could be ok.

Multiple objects textured by multiple textures
+ easy to implement
+ no filtering problems
+ texture can be repeated
- binding different texture for different object can mean performance hit on graphic hardware side

Doable using any approach.


Petr

[Petr Schreiber]

Developed,

will be present in next release.

[Lionheart008]

hi all, dear michael (2x), petr ...
and I like this good idea, very useful

thank you! for...

Multiple objects textured by image from bigger and multiple texture

I hope we can handle with new texture functions easier in 2d and 3d world... would be nice for working with tbgl/ui module and for example human bodies, rooms, objects, landscapes, tiles, water and more daily fantasy inputs

bye, Lionheart

[Petr Schreiber]

Developed, will present in next release