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-rw-r--r--xorg-server/fb/fbutil.c362
1 files changed, 362 insertions, 0 deletions
diff --git a/xorg-server/fb/fbutil.c b/xorg-server/fb/fbutil.c
new file mode 100644
index 000000000..5e232971e
--- /dev/null
+++ b/xorg-server/fb/fbutil.c
@@ -0,0 +1,362 @@
+/*
+ * 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,
+};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 21:00:15 +0000