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MAJOR RESTRUCTURE

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Tom-on
2024-12-28 21:23:58 +01:00
parent 12b07a9f70
commit 2e0b030324
81 changed files with 1168 additions and 579 deletions
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backup/libk/screen/gfxmode.c
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#include <screen/gfxmode.h>
#include <memory/addresses.h>
#include <stdint.h>
modeInfoBlock_t* gfxMode = (modeInfoBlock_t*)MODE_INFO_BLOCK_LOC;
uint32_t convertColor(uint32_t color) {
if (gfxMode->bpp == 8) { // Uses VGA Color pallete, idk how to support that
return color & 0xff;
}
// TODO: !! Important !! - Is should be divided by 255.0 (for floats), but using '-mgeneral-regs-only' removes fp-registers and
// wants to use some dumb functions for converting fp numbers in the stdlib (that we don't have)
uint8_t red = ((color >> 16) & 0xff) * (((1 << gfxMode->linearRedMaskSize) - 1) / 255);
uint8_t green = ((color >> 8 ) & 0xff) * (((1 << gfxMode->linearGreenMaskSize) - 1) / 255);
uint8_t blue = ((color ) & 0xff) * (((1 << gfxMode->linearBlueMaskSize) - 1) / 255);
return (red << gfxMode->redFieldPos) | (green << gfxMode->greenFieldPos) | (blue << gfxMode->blueFieldPos);
}