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xserver/fb/fbutil.c

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/*
* Copyright © 1998 Keith Packard
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Keith Packard not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include "fb.h"
FbBits
fbReplicatePixel(Pixel p, int bpp)
{
FbBits b = p;
b &= FbFullMask(bpp);
while (bpp < FB_UNIT) {
b |= b << bpp;
bpp <<= 1;
}
return b;
}
void
fbReduceRasterOp(int rop, FbBits fg, FbBits pm, FbBits * andp, FbBits * xorp)
{
FbBits and, xor;
switch (rop) {
default:
case GXclear: /* 0 0 0 0 */
and = 0;
xor = 0;
break;
case GXand: /* 0 0 0 1 */
and = fg;
xor = 0;
break;
case GXandReverse: /* 0 0 1 0 */
and = fg;
xor = fg;
break;
case GXcopy: /* 0 0 1 1 */
and = 0;
xor = fg;
break;
case GXandInverted: /* 0 1 0 0 */
and = ~fg;
xor = 0;
break;
case GXnoop: /* 0 1 0 1 */
and = FB_ALLONES;
xor = 0;
break;
case GXxor: /* 0 1 1 0 */
and = FB_ALLONES;
xor = fg;
break;
case GXor: /* 0 1 1 1 */
and = ~fg;
xor = fg;
break;
case GXnor: /* 1 0 0 0 */
and = ~fg;
xor = ~fg;
break;
case GXequiv: /* 1 0 0 1 */
and = FB_ALLONES;
xor = ~fg;
break;
case GXinvert: /* 1 0 1 0 */
and = FB_ALLONES;
xor = FB_ALLONES;
break;
case GXorReverse: /* 1 0 1 1 */
and = ~fg;
xor = FB_ALLONES;
break;
case GXcopyInverted: /* 1 1 0 0 */
and = 0;
xor = ~fg;
break;
case GXorInverted: /* 1 1 0 1 */
and = fg;
xor = ~fg;
break;
case GXnand: /* 1 1 1 0 */
and = fg;
xor = FB_ALLONES;
break;
case GXset: /* 1 1 1 1 */
and = 0;
xor = FB_ALLONES;
break;
}
and |= ~pm;
xor &= pm;
*andp = and;
*xorp = xor;
}
#define O 0
#define I FB_ALLONES
const FbMergeRopRec FbMergeRopBits[16] = {
{O, O, O, O}, /* clear 0x0 0 */
{I, O, O, O}, /* and 0x1 src AND dst */
{I, O, I, O}, /* andReverse 0x2 src AND NOT dst */
{O, O, I, O}, /* copy 0x3 src */
{I, I, O, O}, /* andInverted 0x4 NOT src AND dst */
{O, I, O, O}, /* noop 0x5 dst */
{O, I, I, O}, /* xor 0x6 src XOR dst */
{I, I, I, O}, /* or 0x7 src OR dst */
{I, I, I, I}, /* nor 0x8 NOT src AND NOT dst */
{O, I, I, I}, /* equiv 0x9 NOT src XOR dst */
{O, I, O, I}, /* invert 0xa NOT dst */
{I, I, O, I}, /* orReverse 0xb src OR NOT dst */
{O, O, I, I}, /* copyInverted 0xc NOT src */
{I, O, I, I}, /* orInverted 0xd NOT src OR dst */
{I, O, O, I}, /* nand 0xe NOT src OR NOT dst */
{O, O, O, I}, /* set 0xf 1 */
};
/*
* Stipple masks are independent of bit/byte order as long
* as bitorder == byteorder. FB doesn't handle the case
* where these differ
*/
#define BitsMask(x,w) ((FB_ALLONES << ((x) & FB_MASK)) & \
(FB_ALLONES >> ((FB_UNIT - ((x) + (w))) & FB_MASK)))
#define Mask(x,w) BitsMask((x)*(w),(w))
#define SelMask(b,n,w) ((((b) >> n) & 1) * Mask(n,w))
#define C1(b,w) \
(SelMask(b,0,w))
#define C2(b,w) \
(SelMask(b,0,w) | \
SelMask(b,1,w))
#define C4(b,w) \
(SelMask(b,0,w) | \
SelMask(b,1,w) | \
SelMask(b,2,w) | \
SelMask(b,3,w))
#define C8(b,w) \
(SelMask(b,0,w) | \
SelMask(b,1,w) | \
SelMask(b,2,w) | \
SelMask(b,3,w) | \
SelMask(b,4,w) | \
SelMask(b,5,w) | \
SelMask(b,6,w) | \
SelMask(b,7,w))
#if FB_UNIT == 16
#define fbStipple16Bits 0
#define fbStipple8Bits 0
const FbBits fbStipple4Bits[16] = {
C4(0, 4), C4(1, 4), C4(2, 4), C4(3, 4), C4(4, 4), C4(5, 4),
C4(6, 4), C4(7, 4), C4(8, 4), C4(9, 4), C4(10, 4), C4(11, 4),
C4(12, 4), C4(13, 4), C4(14, 4), C4(15, 4),
};
const FbBits fbStipple2Bits[4] = {
C2(0, 8), C2(1, 8), C2(2, 8), C2(3, 8),
};
const FbBits fbStipple1Bits[2] = {
C1(0, 16), C1(1, 16),
};
#endif
#if FB_UNIT == 32
#define fbStipple16Bits 0
const FbBits fbStipple8Bits[256] = {
C8(0, 4), C8(1, 4), C8(2, 4), C8(3, 4), C8(4, 4), C8(5, 4),
C8(6, 4), C8(7, 4), C8(8, 4), C8(9, 4), C8(10, 4), C8(11, 4),
C8(12, 4), C8(13, 4), C8(14, 4), C8(15, 4), C8(16, 4), C8(17, 4),
C8(18, 4), C8(19, 4), C8(20, 4), C8(21, 4), C8(22, 4), C8(23, 4),
C8(24, 4), C8(25, 4), C8(26, 4), C8(27, 4), C8(28, 4), C8(29, 4),
C8(30, 4), C8(31, 4), C8(32, 4), C8(33, 4), C8(34, 4), C8(35, 4),
C8(36, 4), C8(37, 4), C8(38, 4), C8(39, 4), C8(40, 4), C8(41, 4),
C8(42, 4), C8(43, 4), C8(44, 4), C8(45, 4), C8(46, 4), C8(47, 4),
C8(48, 4), C8(49, 4), C8(50, 4), C8(51, 4), C8(52, 4), C8(53, 4),
C8(54, 4), C8(55, 4), C8(56, 4), C8(57, 4), C8(58, 4), C8(59, 4),
C8(60, 4), C8(61, 4), C8(62, 4), C8(63, 4), C8(64, 4), C8(65, 4),
C8(66, 4), C8(67, 4), C8(68, 4), C8(69, 4), C8(70, 4), C8(71, 4),
C8(72, 4), C8(73, 4), C8(74, 4), C8(75, 4), C8(76, 4), C8(77, 4),
C8(78, 4), C8(79, 4), C8(80, 4), C8(81, 4), C8(82, 4), C8(83, 4),
C8(84, 4), C8(85, 4), C8(86, 4), C8(87, 4), C8(88, 4), C8(89, 4),
C8(90, 4), C8(91, 4), C8(92, 4), C8(93, 4), C8(94, 4), C8(95, 4),
C8(96, 4), C8(97, 4), C8(98, 4), C8(99, 4), C8(100, 4), C8(101, 4),
C8(102, 4), C8(103, 4), C8(104, 4), C8(105, 4), C8(106, 4), C8(107, 4),
C8(108, 4), C8(109, 4), C8(110, 4), C8(111, 4), C8(112, 4), C8(113, 4),
C8(114, 4), C8(115, 4), C8(116, 4), C8(117, 4), C8(118, 4), C8(119, 4),
C8(120, 4), C8(121, 4), C8(122, 4), C8(123, 4), C8(124, 4), C8(125, 4),
C8(126, 4), C8(127, 4), C8(128, 4), C8(129, 4), C8(130, 4), C8(131, 4),
C8(132, 4), C8(133, 4), C8(134, 4), C8(135, 4), C8(136, 4), C8(137, 4),
C8(138, 4), C8(139, 4), C8(140, 4), C8(141, 4), C8(142, 4), C8(143, 4),
C8(144, 4), C8(145, 4), C8(146, 4), C8(147, 4), C8(148, 4), C8(149, 4),
C8(150, 4), C8(151, 4), C8(152, 4), C8(153, 4), C8(154, 4), C8(155, 4),
C8(156, 4), C8(157, 4), C8(158, 4), C8(159, 4), C8(160, 4), C8(161, 4),
C8(162, 4), C8(163, 4), C8(164, 4), C8(165, 4), C8(166, 4), C8(167, 4),
C8(168, 4), C8(169, 4), C8(170, 4), C8(171, 4), C8(172, 4), C8(173, 4),
C8(174, 4), C8(175, 4), C8(176, 4), C8(177, 4), C8(178, 4), C8(179, 4),
C8(180, 4), C8(181, 4), C8(182, 4), C8(183, 4), C8(184, 4), C8(185, 4),
C8(186, 4), C8(187, 4), C8(188, 4), C8(189, 4), C8(190, 4), C8(191, 4),
C8(192, 4), C8(193, 4), C8(194, 4), C8(195, 4), C8(196, 4), C8(197, 4),
C8(198, 4), C8(199, 4), C8(200, 4), C8(201, 4), C8(202, 4), C8(203, 4),
C8(204, 4), C8(205, 4), C8(206, 4), C8(207, 4), C8(208, 4), C8(209, 4),
C8(210, 4), C8(211, 4), C8(212, 4), C8(213, 4), C8(214, 4), C8(215, 4),
C8(216, 4), C8(217, 4), C8(218, 4), C8(219, 4), C8(220, 4), C8(221, 4),
C8(222, 4), C8(223, 4), C8(224, 4), C8(225, 4), C8(226, 4), C8(227, 4),
C8(228, 4), C8(229, 4), C8(230, 4), C8(231, 4), C8(232, 4), C8(233, 4),
C8(234, 4), C8(235, 4), C8(236, 4), C8(237, 4), C8(238, 4), C8(239, 4),
C8(240, 4), C8(241, 4), C8(242, 4), C8(243, 4), C8(244, 4), C8(245, 4),
C8(246, 4), C8(247, 4), C8(248, 4), C8(249, 4), C8(250, 4), C8(251, 4),
C8(252, 4), C8(253, 4), C8(254, 4), C8(255, 4),
};
const FbBits fbStipple4Bits[16] = {
C4(0, 8), C4(1, 8), C4(2, 8), C4(3, 8), C4(4, 8), C4(5, 8),
C4(6, 8), C4(7, 8), C4(8, 8), C4(9, 8), C4(10, 8), C4(11, 8),
C4(12, 8), C4(13, 8), C4(14, 8), C4(15, 8),
};
const FbBits fbStipple2Bits[4] = {
C2(0, 16), C2(1, 16), C2(2, 16), C2(3, 16),
};
const FbBits fbStipple1Bits[2] = {
C1(0, 32), C1(1, 32),
};
#endif
#if FB_UNIT == 64
const FbBits fbStipple16Bits[256] = {
C8(0, 4), C8(1, 4), C8(2, 4), C8(3, 4), C8(4, 4), C8(5, 4),
C8(6, 4), C8(7, 4), C8(8, 4), C8(9, 4), C8(10, 4), C8(11, 4),
C8(12, 4), C8(13, 4), C8(14, 4), C8(15, 4), C8(16, 4), C8(17, 4),
C8(18, 4), C8(19, 4), C8(20, 4), C8(21, 4), C8(22, 4), C8(23, 4),
C8(24, 4), C8(25, 4), C8(26, 4), C8(27, 4), C8(28, 4), C8(29, 4),
C8(30, 4), C8(31, 4), C8(32, 4), C8(33, 4), C8(34, 4), C8(35, 4),
C8(36, 4), C8(37, 4), C8(38, 4), C8(39, 4), C8(40, 4), C8(41, 4),
C8(42, 4), C8(43, 4), C8(44, 4), C8(45, 4), C8(46, 4), C8(47, 4),
C8(48, 4), C8(49, 4), C8(50, 4), C8(51, 4), C8(52, 4), C8(53, 4),
C8(54, 4), C8(55, 4), C8(56, 4), C8(57, 4), C8(58, 4), C8(59, 4),
C8(60, 4), C8(61, 4), C8(62, 4), C8(63, 4), C8(64, 4), C8(65, 4),
C8(66, 4), C8(67, 4), C8(68, 4), C8(69, 4), C8(70, 4), C8(71, 4),
C8(72, 4), C8(73, 4), C8(74, 4), C8(75, 4), C8(76, 4), C8(77, 4),
C8(78, 4), C8(79, 4), C8(80, 4), C8(81, 4), C8(82, 4), C8(83, 4),
C8(84, 4), C8(85, 4), C8(86, 4), C8(87, 4), C8(88, 4), C8(89, 4),
C8(90, 4), C8(91, 4), C8(92, 4), C8(93, 4), C8(94, 4), C8(95, 4),
C8(96, 4), C8(97, 4), C8(98, 4), C8(99, 4), C8(100, 4), C8(101, 4),
C8(102, 4), C8(103, 4), C8(104, 4), C8(105, 4), C8(106, 4), C8(107, 4),
C8(108, 4), C8(109, 4), C8(110, 4), C8(111, 4), C8(112, 4), C8(113, 4),
C8(114, 4), C8(115, 4), C8(116, 4), C8(117, 4), C8(118, 4), C8(119, 4),
C8(120, 4), C8(121, 4), C8(122, 4), C8(123, 4), C8(124, 4), C8(125, 4),
C8(126, 4), C8(127, 4), C8(128, 4), C8(129, 4), C8(130, 4), C8(131, 4),
C8(132, 4), C8(133, 4), C8(134, 4), C8(135, 4), C8(136, 4), C8(137, 4),
C8(138, 4), C8(139, 4), C8(140, 4), C8(141, 4), C8(142, 4), C8(143, 4),
C8(144, 4), C8(145, 4), C8(146, 4), C8(147, 4), C8(148, 4), C8(149, 4),
C8(150, 4), C8(151, 4), C8(152, 4), C8(153, 4), C8(154, 4), C8(155, 4),
C8(156, 4), C8(157, 4), C8(158, 4), C8(159, 4), C8(160, 4), C8(161, 4),
C8(162, 4), C8(163, 4), C8(164, 4), C8(165, 4), C8(166, 4), C8(167, 4),
C8(168, 4), C8(169, 4), C8(170, 4), C8(171, 4), C8(172, 4), C8(173, 4),
C8(174, 4), C8(175, 4), C8(176, 4), C8(177, 4), C8(178, 4), C8(179, 4),
C8(180, 4), C8(181, 4), C8(182, 4), C8(183, 4), C8(184, 4), C8(185, 4),
C8(186, 4), C8(187, 4), C8(188, 4), C8(189, 4), C8(190, 4), C8(191, 4),
C8(192, 4), C8(193, 4), C8(194, 4), C8(195, 4), C8(196, 4), C8(197, 4),
C8(198, 4), C8(199, 4), C8(200, 4), C8(201, 4), C8(202, 4), C8(203, 4),
C8(204, 4), C8(205, 4), C8(206, 4), C8(207, 4), C8(208, 4), C8(209, 4),
C8(210, 4), C8(211, 4), C8(212, 4), C8(213, 4), C8(214, 4), C8(215, 4),
C8(216, 4), C8(217, 4), C8(218, 4), C8(219, 4), C8(220, 4), C8(221, 4),
C8(222, 4), C8(223, 4), C8(224, 4), C8(225, 4), C8(226, 4), C8(227, 4),
C8(228, 4), C8(229, 4), C8(230, 4), C8(231, 4), C8(232, 4), C8(233, 4),
C8(234, 4), C8(235, 4), C8(236, 4), C8(237, 4), C8(238, 4), C8(239, 4),
C8(240, 4), C8(241, 4), C8(242, 4), C8(243, 4), C8(244, 4), C8(245, 4),
C8(246, 4), C8(247, 4), C8(248, 4), C8(249, 4), C8(250, 4), C8(251, 4),
C8(252, 4), C8(253, 4), C8(254, 4), C8(255, 4),
};
const FbBits fbStipple8Bits[256] = {
C8(0, 8), C8(1, 8), C8(2, 8), C8(3, 8), C8(4, 8), C8(5, 8),
C8(6, 8), C8(7, 8), C8(8, 8), C8(9, 8), C8(10, 8), C8(11, 8),
C8(12, 8), C8(13, 8), C8(14, 8), C8(15, 8), C8(16, 8), C8(17, 8),
C8(18, 8), C8(19, 8), C8(20, 8), C8(21, 8), C8(22, 8), C8(23, 8),
C8(24, 8), C8(25, 8), C8(26, 8), C8(27, 8), C8(28, 8), C8(29, 8),
C8(30, 8), C8(31, 8), C8(32, 8), C8(33, 8), C8(34, 8), C8(35, 8),
C8(36, 8), C8(37, 8), C8(38, 8), C8(39, 8), C8(40, 8), C8(41, 8),
C8(42, 8), C8(43, 8), C8(44, 8), C8(45, 8), C8(46, 8), C8(47, 8),
C8(48, 8), C8(49, 8), C8(50, 8), C8(51, 8), C8(52, 8), C8(53, 8),
C8(54, 8), C8(55, 8), C8(56, 8), C8(57, 8), C8(58, 8), C8(59, 8),
C8(60, 8), C8(61, 8), C8(62, 8), C8(63, 8), C8(64, 8), C8(65, 8),
C8(66, 8), C8(67, 8), C8(68, 8), C8(69, 8), C8(70, 8), C8(71, 8),
C8(72, 8), C8(73, 8), C8(74, 8), C8(75, 8), C8(76, 8), C8(77, 8),
C8(78, 8), C8(79, 8), C8(80, 8), C8(81, 8), C8(82, 8), C8(83, 8),
C8(84, 8), C8(85, 8), C8(86, 8), C8(87, 8), C8(88, 8), C8(89, 8),
C8(90, 8), C8(91, 8), C8(92, 8), C8(93, 8), C8(94, 8), C8(95, 8),
C8(96, 8), C8(97, 8), C8(98, 8), C8(99, 8), C8(100, 8), C8(101, 8),
C8(102, 8), C8(103, 8), C8(104, 8), C8(105, 8), C8(106, 8), C8(107, 8),
C8(108, 8), C8(109, 8), C8(110, 8), C8(111, 8), C8(112, 8), C8(113, 8),
C8(114, 8), C8(115, 8), C8(116, 8), C8(117, 8), C8(118, 8), C8(119, 8),
C8(120, 8), C8(121, 8), C8(122, 8), C8(123, 8), C8(124, 8), C8(125, 8),
C8(126, 8), C8(127, 8), C8(128, 8), C8(129, 8), C8(130, 8), C8(131, 8),
C8(132, 8), C8(133, 8), C8(134, 8), C8(135, 8), C8(136, 8), C8(137, 8),
C8(138, 8), C8(139, 8), C8(140, 8), C8(141, 8), C8(142, 8), C8(143, 8),
C8(144, 8), C8(145, 8), C8(146, 8), C8(147, 8), C8(148, 8), C8(149, 8),
C8(150, 8), C8(151, 8), C8(152, 8), C8(153, 8), C8(154, 8), C8(155, 8),
C8(156, 8), C8(157, 8), C8(158, 8), C8(159, 8), C8(160, 8), C8(161, 8),
C8(162, 8), C8(163, 8), C8(164, 8), C8(165, 8), C8(166, 8), C8(167, 8),
C8(168, 8), C8(169, 8), C8(170, 8), C8(171, 8), C8(172, 8), C8(173, 8),
C8(174, 8), C8(175, 8), C8(176, 8), C8(177, 8), C8(178, 8), C8(179, 8),
C8(180, 8), C8(181, 8), C8(182, 8), C8(183, 8), C8(184, 8), C8(185, 8),
C8(186, 8), C8(187, 8), C8(188, 8), C8(189, 8), C8(190, 8), C8(191, 8),
C8(192, 8), C8(193, 8), C8(194, 8), C8(195, 8), C8(196, 8), C8(197, 8),
C8(198, 8), C8(199, 8), C8(200, 8), C8(201, 8), C8(202, 8), C8(203, 8),
C8(204, 8), C8(205, 8), C8(206, 8), C8(207, 8), C8(208, 8), C8(209, 8),
C8(210, 8), C8(211, 8), C8(212, 8), C8(213, 8), C8(214, 8), C8(215, 8),
C8(216, 8), C8(217, 8), C8(218, 8), C8(219, 8), C8(220, 8), C8(221, 8),
C8(222, 8), C8(223, 8), C8(224, 8), C8(225, 8), C8(226, 8), C8(227, 8),
C8(228, 8), C8(229, 8), C8(230, 8), C8(231, 8), C8(232, 8), C8(233, 8),
C8(234, 8), C8(235, 8), C8(236, 8), C8(237, 8), C8(238, 8), C8(239, 8),
C8(240, 8), C8(241, 8), C8(242, 8), C8(243, 8), C8(244, 8), C8(245, 8),
C8(246, 8), C8(247, 8), C8(248, 8), C8(249, 8), C8(250, 8), C8(251, 8),
C8(252, 8), C8(253, 8), C8(254, 8), C8(255, 8),
};
const FbBits fbStipple4Bits[16] = {
C4(0, 16), C4(1, 16), C4(2, 16), C4(3, 16), C4(4, 16), C4(5, 16),
C4(6, 16), C4(7, 16), C4(8, 16), C4(9, 16), C4(10, 16), C4(11, 16),
C4(12, 16), C4(13, 16), C4(14, 16), C4(15, 16),
};
const FbBits fbStipple2Bits[4] = {
C2(0, 32), C2(1, 32), C2(2, 32), C2(3, 32),
};
#define fbStipple1Bits 0
#endif
const FbBits *const fbStippleTable[] = {
0,
fbStipple1Bits,
fbStipple2Bits,
0,
fbStipple4Bits,
0,
0,
0,
fbStipple8Bits,
};
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