Alternatives to texture background images?

Graphics and GPU Programming Programming

Started by juuso January 14, 2004 04:44 AM

1 comment, last by juuso 20 years, 3 months ago

289

Author

January 14, 2004 04:44 AM

Is there a smarter way to throw a static background image to the screen, than using a large texture? As the texture size needs to be a power of 2, it means wasted blank space on the texture. Splitting the texture into many small texure chunks to get a better match for size isn''t desirable either. So, with a fixed screen resolution, and a static background image, are there any tricks to avoid the texture hassle?

126

January 14, 2004 04:59 AM

There''s the glDrawPixels function to write a image directly to the framebuffer but it''s generally slower than the texture approach, so i think it''s generally the best way to use one background texture.

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Lev Povalahev

122

January 14, 2004 05:20 AM

Since the texture does not need mipmaps you can use EXT_/NV_texture_rectangle. Works on ATI and NVIDIA.

Regards
-Lev