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prog


how to write direct to memory under protected mode?

9 2024-06-08 16:30

>>1,5

Device Manager lists the physical address of the framebuffer under
Display Adapters > Resources, which you can pass to MmMapIoSpace to get
the nonpaged virtual address. You can draw directly on the framebuffer
using that address like /dev/fb0

If you want to create a window-relative framebuffer then you necessarily
have to go through the Window's API to request it before drawing, the
simplest way seems to be using BitBlt to draw a bitmap after requesting
a device context handle: https://solhsa.com/wintut/ch3.html

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