texture drawing method questions

[ppheathead]

As far as I know the CL_Texture class store data in video memory, I want to use the davantage~
what I want to do is simple, just to use CL_Texture to draw a streched flat image in a rect.
I see there is a draw function that draw texture in rect, but how to strech?
and is there some bilinear support instead of linear or closest point?

Thanks.

[alexv1]

I think that scale is used for x and y.

[rombust]

For CL_Texture:

CL_Draw::texture(
		CL_GraphicContext gc,
		const CL_Rectf &rect,
		const CL_Colorf &color = CL_Colorf::white,
		const CL_Rectf &texture_unit1_coords = CL_Rectf(0.0, 0.0, 1.0, 1.0));

So, it will automatically be stretched by OpenGL.

Remember to use gc.set_texture(0, texture) before and gc.reset_texture(0) after.

To set the filters use: (CL_Texture)

	void set_min_filter(CL_TextureFilter filter);
	void set_mag_filter(CL_TextureFilter filter);

CL_Texture is very low level, where speed will be the priority.

Maybe CL_Sprite would be a better choice? http://clanlib.org/docs/clanlib-2.0....CL_Sprite.html

[alexv1]

Wow, that's quite different

[ppheathead]

Thank you ROMBUST, I'll try.
So the CL_Draw::texture's 2nd param means the rect in gc, and 3rd param deal with background color I guess? then the 4th param is the rect in source texture which should be picked up by gc.set_texture(0, texture).
Am I right?

[sphair]

"As far as I know the CL_Texture class store data in video memory, I want to use the davantage"

All ClanLibs image classes use data stored in video memory. You'll gain very little by using CL_Texture instead of for instance CL_Image, except for a more cryptic API.