Getting around the ^2 texture limitation

Godji · 2003-07-11T11:50:27

Is that possible and how? I have a 2000x1500 picture that I want to use as a 2D background. Loading it as a 2048x2048 texture and pasting only what I need is extremely inefficient, obviously... G-9405

NeHe Productions Affiliates

Started by Godji July 08, 2003 12:59 PM

26 comments, last by Godji 20 years, 9 months ago

RuntimeError

122

July 09, 2003 06:24 PM

quote:Original post by Anonymous Poster
My TNT2 supports 2k x 2k textures. I say fsck 3Dfx, no one should be using those cards anymore anyway.

Hey, say nothing against 3Dfx ... I used my good old Voodoo Banshee till last year.
But I agree, only a few people still use them. Not because they are too slow, but the the driver-support is pratically nonexistent :-)

sjelkjd

171

July 09, 2003 07:32 PM

quote:Original post by Anonymous Poster
WRONG!

ATI supports it on all the Radeon series cards.

It doesn''t work on my Radeon 9800 pro.

neurokaotix

100

July 10, 2003 12:59 PM

I know that the Voodoo3 only supports 256x256 textures but I was thinking that 512x512 would be nice in a lot of instances inside the game. Do you really think it''s a good idea to cut those older cards out of the lineup?

James Simmons
MindEngine Development
http://medev.sourceforge.net

MindEngine (C++) | E-Commerce Business Architecture (ASP.NET / C#)

Godji

122

Author

July 10, 2003 03:42 PM

OK, thanks to everyone for replying, but I''ve given up making a 2D engine use OpenGL. It''s way too inefficient. If you want to do solely 2D, use DirectDraw.

G-9405

Godji

neurokaotix

100

July 10, 2003 03:46 PM

Or get off the outdated, never-going-to-be-updated-again bandwagon and just learn how to do things efficiently with quads

MindEngine (C++) | E-Commerce Business Architecture (ASP.NET / C#)

Crawl

136

July 11, 2003 11:13 AM

quote:Original post by Anonymous Poster
quote:Original post by Crawl
quote:Original post by Godji
I believe using this extension limits my game to NVIDIA users?
G-9405

Yep,.... so,.. DON''T USE IT!!,...

WRONG!

ATI supports it on all the Radeon series cards.

Nope,.....

ATI
Delphi 3D''s extension library thingy

The ATI page does say it supports an extension called EXT_texture_rectangle (ie. not NVidia specific) but i can''t seem to find its specs on the OpenGL Extension Registry.

--------<a href="http://www.icarusindie.com/rpc>Reverse Pop Culture

Anonymous

July 11, 2003 11:19 AM

EXT_texture_rectangle IS NV_texture_rectangle

http://developer.apple.com/opengl/extensions/ext_texture_rectangle.html
http://oss.sgi.com/projects/ogl-sample/registry/NV/texture_rectangle.txt

Crawl

136

July 11, 2003 11:50 AM

Ah, i see it now,....

SGI and NVIDIA have this in their extension headers
#define GL_TEXTURE_RECTANGLE_NV 0x84F5

and ATI has this
#define GL_TEXTURE_RECTANGLE_EXT 0x84F5

...... same extension, different name,.... my bad....

--------<a href="http://www.icarusindie.com/rpc>Reverse Pop Culture

Getting around the ^2 texture limitation

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