b9ca8e8378
allow the shadow framebuffer (softscreen) to be used with any vga driver, not just vesa. this removes the ugly scr->paddr = 0 hack employed by vesa driver to force softscreen and adds a softscreen vgactl message that can switch the feature on and off at runtime. softscreen can greatly improve graphics performance when bus reads are slow even tho it disables hardware acceleration. |
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