94 lines
2.7 KiB
HolyC
94 lines
2.7 KiB
HolyC
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#help_index "Graphics/Color"
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public U8 gr_rainbow_10[10]={
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BLACK,BROWN,RED,LTRED,YELLOW,GREEN,BLUE,PURPLE,LTGRAY,WHITE};
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DefineLstLoad("ST_RAINBOW_10",
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"BLACK\0BROWN\0RED\0LTRED\0YELLOW\0GREEN\0BLUE\0PURPLE\0LTGRAY\0WHITE\0");
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U0 GrPaletteIndicesSet()
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{//There is a level of indirection that we identity map.
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// Set 16-colors to use first 16 DAC BGR entries, so we
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// never need to worry about indexes, just DAC palette settings.
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I64 i;
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if (!Bt(&sys_run_level,RLf_VGA)) return;
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PUSHFD
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CLI
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while (LBts(&sys_semas[SEMA_VGA],0))
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Yield;
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InU8(VGAP_INPUT_STAT); //Rsts attr index/data
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for (i=0;i<COLORS_NUM;i++) {
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OutU8(VGAP_ATTR_INDEX,i);
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OutU8(VGAP_ATTR_DATA_WRITE,i);
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}
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OutU8(VGAP_ATTR_INDEX,0x20);
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OutU8(VGAP_ATTR_DATA_WRITE,0); //Dummy write
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InU8(VGAP_INPUT_STAT); //Rsts attr index/data
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LBtr(&sys_semas[SEMA_VGA],0);
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POPFD
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}
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public U0 GrPaletteColorSet(I64 color_num,CBGR48 bgr48)
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{//VGA has 6-bits for blue, for green, and for red.
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if (!Bt(&sys_run_level,RLf_VGA)) return;
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PUSHFD
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CLI
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while (LBts(&sys_semas[SEMA_VGA],0))
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Yield;
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OutU8(VGAP_PALETTE_MASK,0xFF);
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OutU8(VGAP_REG_WRITE,color_num);
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OutU8(VGAP_PALETTE_DATA,bgr48.r>>10);
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OutU8(VGAP_PALETTE_DATA,bgr48.g>>10);
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OutU8(VGAP_PALETTE_DATA,bgr48.b>>10);
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LBtr(&sys_semas[SEMA_VGA],0);
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POPFD
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}
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public CBGR48 GrPaletteColorGet(I64 color_num)
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{//VGA has 6-bits for blue, for green, and for red.
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CBGR48 res=0;
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if (!Bt(&sys_run_level,RLf_VGA)) return 0;
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PUSHFD
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CLI
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while (LBts(&sys_semas[SEMA_VGA],0))
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Yield;
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OutU8(VGAP_PALETTE_MASK,0xFF);
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OutU8(VGAP_REG_READ,color_num);
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res.r=0xFFFF<<10*InU8(VGAP_PALETTE_DATA)/0xFC00;
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res.g=0xFFFF<<10*InU8(VGAP_PALETTE_DATA)/0xFC00;
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res.b=0xFFFF<<10*InU8(VGAP_PALETTE_DATA)/0xFC00;
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LBtr(&sys_semas[SEMA_VGA],0);
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POPFD
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return res;
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}
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public CBGR48 gr_palette_std[COLORS_NUM]={
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0x000000000000,0x00000000AAAA,0x0000AAAA0000,0x0000AAAAAAAA,
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0xAAAA00000000,0xAAAA0000AAAA,0xAAAA55550000,0xAAAAAAAAAAAA,
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0x555555555555,0x55555555FFFF,0x5555FFFF5555,0x5555FFFFFFFF,
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0xFFFF55555555,0xFFFF5555FFFF,0xFFFFFFFF5555,0xFFFFFFFFFFFF};
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public CBGR48 gr_palette_gray[COLORS_NUM]={
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0x000000000000,0x111111111111,0x222222222222,0x333333333333,
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0x444444444444,0x555555555555,0x666666666666,0x777777777777,
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0x888888888888,0x999999999999,0xAAAAAAAAAAAA,0xBBBBBBBBBBBB,
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0xCCCCCCCCCCCC,0xDDDDDDDDDDDD,0xEEEEEEEEEEEE,0xFFFFFFFFFFFF};
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public U0 GrPaletteGet(CBGR48 *bgr48)
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{//16 colors
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I64 i;
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for (i=0;i<COLORS_NUM;i++)
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bgr48[i]=GrPaletteColorGet(i);
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}
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public U0 GrPaletteSet(CBGR48 *bgr48)
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{//16 colors
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I64 i;
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for (i=0;i<COLORS_NUM;i++)
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GrPaletteColorSet(i,bgr48[i]);
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}
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public U0 PaletteSetStd()
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{//Activate std palette.
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GrPaletteSet(gr_palette_std);
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}
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