Loading Textures by glTexImage2D

[Mad Max]

Hi, ALL!

Anyone now that glTexImage2D support different input and output data types, even GL_BGR_EXT and GL_BGRA_EXT for windows bitmap. But, does anyone know how use input data stored in 16 bits per pixel (555 or 565) without manually converting into supported type.

Thanks.

[paolom]

Yes, you do it this way: check for the extension EXT_packed_pixel.
If it's found use an internal_format of GL_RGB5_A1, or GL_RGBA4. Look the specs for more info/formats.
Note that drivers without that ext, won't work with the mentioned formats.

[Mad Max]

Thanks, paolom!

[This message has been edited by Mad Max (edited 02-17-2000).]