Tech Source GFX 550e - Manual (Page 24)

GFX 550e Installation and Reference Manual
5-2
If it is running at 1024x768 resolution with a depth of 8-bits, 768K
is used for on-screen memory. That leaves 31.2MB available for
pixmaps. In 24-bit and 8+24-bit modes, the on-screen memory
that is used is 4 times larger than what is used in the 8-bit mode.
The largest pixmaps are stored in off-screen memory. If a larger
pixmap replaces a smaller pixmap in the off-screen memory, the
smaller pixmap will move to system memory and remain there
even after the larger pixmap is destroyed.
5.4 OpenGL Support
OpenGL support is provided through the Direct Pixel Access
(DPA) Extension. To use this function, OpenGL v1.5 or higher
must already be installed on your system.