| 1 | /************************************************************
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| 2 | Copyright 1987 by Sun Microsystems, Inc. Mountain View, CA.
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| 3 |
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| 4 | All Rights Reserved
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| 5 |
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| 6 | Permission to use, copy, modify, and distribute this
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| 7 | software and its documentation for any purpose and without
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| 8 | fee is hereby granted, provided that the above copyright no-
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| 9 | tice appear in all copies and that both that copyright no-
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| 10 | tice and this permission notice appear in supporting docu-
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| 11 | mentation, and that the names of Sun or The Open Group
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| 12 | not be used in advertising or publicity pertaining to
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| 13 | distribution of the software without specific prior
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| 14 | written permission. Sun and The Open Group make no
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| 15 | representations about the suitability of this software for
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| 16 | any purpose. It is provided "as is" without any express or
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| 17 | implied warranty.
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| 18 |
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| 19 | SUN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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| 20 | INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT-
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| 21 | NESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SUN BE LI-
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| 22 | ABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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| 23 | ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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| 24 | PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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| 25 | OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH
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| 26 | THE USE OR PERFORMANCE OF THIS SOFTWARE.
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| 27 |
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| 28 | ********************************************************/
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| 29 |
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| 30 | /* Optimizations for PSZ == 32 added by Kyle Marvin ([email protected]) */
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| 31 |
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| 32 | #include <X11/X.h>
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| 33 | #include <X11/Xmd.h>
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| 34 | #include "servermd.h"
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| 35 | #include "compiler.h"
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| 36 |
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| 37 | /*
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| 38 | * ==========================================================================
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| 39 | * Converted from mfb to support memory-mapped color framebuffer by smarks@sun,
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| 40 | * April-May 1987.
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| 41 | *
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| 42 | * The way I did the conversion was to consider each longword as an
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| 43 | * array of four bytes instead of an array of 32 one-bit pixels. So
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| 44 | * getbits() and putbits() retain much the same calling sequence, but
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| 45 | * they move bytes around instead of bits. Of course, this entails the
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| 46 | * removal of all of the one-bit-pixel dependencies from the other
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| 47 | * files, but the major bit-hacking stuff should be covered here.
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| 48 | *
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| 49 | * I've created some new macros that make it easier to understand what's
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| 50 | * going on in the pixel calculations, and that make it easier to change the
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| 51 | * pixel size.
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| 52 | *
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| 53 | * name explanation
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| 54 | * ---- -----------
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| 55 | * PSZ pixel size (in bits)
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| 56 | * PGSZ pixel group size (in bits)
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| 57 | * PGSZB pixel group size (in bytes)
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| 58 | * PGSZBMSK mask with lowest PGSZB bits set to 1
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| 59 | * PPW pixels per word (pixels per pixel group)
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| 60 | * PPWMSK mask with lowest PPW bits set to 1
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| 61 | * PLST index of last pixel in a word (should be PPW-1)
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| 62 | * PIM pixel index mask (index within a pixel group)
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| 63 | * PWSH pixel-to-word shift (should be log2(PPW))
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| 64 | * PMSK mask with lowest PSZ bits set to 1
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| 65 | *
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| 66 | *
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| 67 | * Here are some sample values. In the notation cfbA,B: A is PSZ, and
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| 68 | * B is PGSZB. All the other values are derived from these
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| 69 | * two. This table does not show all combinations!
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| 70 | *
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| 71 | * name cfb8,4 cfb24,4 cfb32,4 cfb8,8 cfb24,8 cfb32,8
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| 72 | * ---- ------ ------- ------ ------ ------ -------
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| 73 | * PSZ 8 24 32 8 24 32
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| 74 | * PGSZ 32 32 32 64 64 64
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| 75 | * PGSZB 4 4 4 8 8 8
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| 76 | * PGSZBMSK 0xF 0xF? 0xF 0xFF 0xFF 0xFF
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| 77 | * PPW 4 1 1 8 2 2
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| 78 | * PPWMSK 0xF 0x1 0x1 0xFF 0x3? 0x3
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| 79 | * PLST 3 0 0 7 1 1
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| 80 | * PIM 0x3 0x0 0x0 0x7 0x1? 0x1
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| 81 | * PWSH 2 0 0 3 1 1
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| 82 | * PMSK 0xFF 0xFFFFFF 0xFFFFFFFF 0xFF 0xFFFFFF 0xFFFFFFFF
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| 83 | *
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| 84 | *
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| 85 | * I have also added a new macro, PFILL, that takes one pixel and
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| 86 | * replicates it throughout a word. This macro definition is dependent
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| 87 | * upon pixel and word size; it doesn't use macros like PPW and so
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| 88 | * forth. Examples: for monochrome, PFILL(1) => 0xffffffff, PFILL(0) =>
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| 89 | * 0x00000000. For 8-bit color, PFILL(0x5d) => 0x5d5d5d5d. This macro
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| 90 | * is used primarily for replicating a plane mask into a word.
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| 91 | *
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| 92 | * Color framebuffers operations also support the notion of a plane
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| 93 | * mask. This mask determines which planes of the framebuffer can be
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| 94 | * altered; the others are left unchanged. I have added another
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| 95 | * parameter to the putbits and putbitsrop macros that is the plane
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| 96 | * mask.
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| 97 | * ==========================================================================
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| 98 | *
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| 99 | * Keith Packard ([email protected])
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| 100 | * 64bit code is no longer supported; it requires DIX support
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| 101 | * for repadding images which significantly impacts performance
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| 102 | */
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| 103 |
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| 104 | /*
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| 105 | * PSZ needs to be defined before we get here. Usually it comes from a
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| 106 | * -DPSZ=foo on the compilation command line.
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| 107 | */
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| 108 |
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| 109 | #ifndef PSZ
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| 110 | #define PSZ 8
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| 111 | #endif
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| 112 |
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| 113 | /*
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| 114 | * PixelGroup is the data type used to operate on groups of pixels.
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| 115 | * We typedef it here to CARD32 with the assumption that you
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| 116 | * want to manipulate 32 bits worth of pixels at a time as you can. If CARD32
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| 117 | * is not appropriate for your server, define it to something else
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| 118 | * before including this file. In this case you will also have to define
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| 119 | * PGSZB to the size in bytes of PixelGroup.
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| 120 | */
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| 121 | #ifndef PixelGroup
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| 122 | #define PixelGroup CARD32
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| 123 | #define PGSZB 4
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| 124 | #endif /* PixelGroup */
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| 125 |
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| 126 | #ifndef CfbBits
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| 127 | #define CfbBits CARD32
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| 128 | #endif
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| 129 |
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| 130 | #define PGSZ (PGSZB << 3)
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| 131 | #define PPW (PGSZ/PSZ)
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| 132 | #define PLST (PPW-1)
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| 133 | #define PIM PLST
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| 134 | #define PMSK (((PixelGroup)1 << PSZ) - 1)
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| 135 | #define PPWMSK (((PixelGroup)1 << PPW) - 1) /* instead of BITMSK */
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| 136 | #define PGSZBMSK (((PixelGroup)1 << PGSZB) - 1)
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| 137 |
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| 138 | /* set PWSH = log2(PPW) using brute force */
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| 139 |
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| 140 | #if PPW == 1
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| 141 | #define PWSH 0
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| 142 | #else
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| 143 | #if PPW == 2
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| 144 | #define PWSH 1
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| 145 | #else
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| 146 | #if PPW == 4
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| 147 | #define PWSH 2
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| 148 | #else
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| 149 | #if PPW == 8
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| 150 | #define PWSH 3
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| 151 | #else
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| 152 | #if PPW == 16
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| 153 | #define PWSH 4
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| 154 | #endif /* PPW == 16 */
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| 155 | #endif /* PPW == 8 */
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| 156 | #endif /* PPW == 4 */
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| 157 | #endif /* PPW == 2 */
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| 158 | #endif /* PPW == 1 */
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| 159 |
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| 160 | /* Defining PIXEL_ADDR means that individual pixels are addressable by this
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| 161 | * machine (as type PixelType). A possible CFB architecture which supported
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| 162 | * 8-bits-per-pixel on a non byte-addressable machine would not have this
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| 163 | * defined.
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| 164 | *
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| 165 | * Defining FOUR_BIT_CODE means that cfb knows how to stipple on this machine;
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| 166 | * eventually, stippling code for 16 and 32 bit devices should be written
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| 167 | * which would allow them to also use FOUR_BIT_CODE. There isn't that
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| 168 | * much to do in those cases, but it would make them quite a bit faster.
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| 169 | */
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| 170 |
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| 171 | #if PSZ == 8
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| 172 | #define PIXEL_ADDR
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| 173 | typedef CARD8 PixelType;
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| 174 | #define FOUR_BIT_CODE
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| 175 | #endif
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| 176 |
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| 177 | #if PSZ == 16
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| 178 | #define PIXEL_ADDR
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| 179 | typedef CARD16 PixelType;
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| 180 | #endif
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| 181 |
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| 182 | #if PSZ == 24
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| 183 | #undef PMSK
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| 184 | #define PMSK 0xFFFFFF
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| 185 | /*#undef PIM
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| 186 | #define PIM 3*/
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| 187 | #define PIXEL_ADDR
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| 188 | typedef CARD32 PixelType;
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| 189 | #endif
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| 190 |
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| 191 | #if PSZ == 32
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| 192 | #undef PMSK
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| 193 | #define PMSK 0xFFFFFFFF
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| 194 | #define PIXEL_ADDR
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| 195 | typedef CARD32 PixelType;
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| 196 | #endif
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| 197 |
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| 198 |
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| 199 | /* the following notes use the following conventions:
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| 200 | SCREEN LEFT SCREEN RIGHT
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| 201 | in this file and maskbits.c, left and right refer to screen coordinates,
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| 202 | NOT bit numbering in registers.
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| 203 |
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| 204 | cfbstarttab[n]
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| 205 | pixels[0,n-1] = 0's pixels[n,PPW-1] = 1's
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| 206 | cfbendtab[n] =
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| 207 | pixels[0,n-1] = 1's pixels[n,PPW-1] = 0's
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| 208 |
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| 209 | cfbstartpartial[], cfbendpartial[]
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| 210 | these are used as accelerators for doing putbits and masking out
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| 211 | bits that are all contained between longword boudaries. the extra
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| 212 | 256 bytes of data seems a small price to pay -- code is smaller,
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| 213 | and narrow things (e.g. window borders) go faster.
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| 214 |
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| 215 | the names may seem misleading; they are derived not from which end
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| 216 | of the word the bits are turned on, but at which end of a scanline
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| 217 | the table tends to be used.
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| 218 |
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| 219 | look at the tables and macros to understand boundary conditions.
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| 220 | (careful readers will note that starttab[n] = ~endtab[n] for n != 0)
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| 221 |
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| 222 | -----------------------------------------------------------------------
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| 223 | these two macros depend on the screen's bit ordering.
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| 224 | in both of them x is a screen position. they are used to
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| 225 | combine bits collected from multiple longwords into a
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| 226 | single destination longword, and to unpack a single
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| 227 | source longword into multiple destinations.
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| 228 |
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| 229 | SCRLEFT(dst, x)
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| 230 | takes dst[x, PPW] and moves them to dst[0, PPW-x]
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| 231 | the contents of the rest of dst are 0 ONLY IF
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| 232 | dst is UNSIGNED.
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| 233 | is cast as an unsigned.
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| 234 | this is a right shift on the VAX, left shift on
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| 235 | Sun and pc-rt.
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| 236 |
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| 237 | SCRRIGHT(dst, x)
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| 238 | takes dst[0,x] and moves them to dst[PPW-x, PPW]
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| 239 | the contents of the rest of dst are 0 ONLY IF
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| 240 | dst is UNSIGNED.
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| 241 | this is a left shift on the VAX, right shift on
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| 242 | Sun and pc-rt.
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| 243 |
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| 244 |
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| 245 | the remaining macros are cpu-independent; all bit order dependencies
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| 246 | are built into the tables and the two macros above.
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| 247 |
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| 248 | maskbits(x, w, startmask, endmask, nlw)
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| 249 | for a span of width w starting at position x, returns
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| 250 | a mask for ragged pixels at start, mask for ragged pixels at end,
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| 251 | and the number of whole longwords between the ends.
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| 252 |
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| 253 | maskpartialbits(x, w, mask)
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| 254 | works like maskbits(), except all the pixels are in the
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| 255 | same longword (i.e. (x&0xPIM + w) <= PPW)
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| 256 |
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| 257 | mask32bits(x, w, startmask, endmask, nlw)
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| 258 | as maskbits, but does not calculate nlw. it is used by
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| 259 | cfbGlyphBlt to put down glyphs <= PPW bits wide.
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| 260 |
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| 261 | getbits(psrc, x, w, dst)
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| 262 | starting at position x in psrc (x < PPW), collect w
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| 263 | pixels and put them in the screen left portion of dst.
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| 264 | psrc is a longword pointer. this may span longword boundaries.
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| 265 | it special-cases fetching all w bits from one longword.
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| 266 |
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| 267 | +--------+--------+ +--------+
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| 268 | | | m |n| | ==> | m |n| |
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| 269 | +--------+--------+ +--------+
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| 270 | x x+w 0 w
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| 271 | psrc psrc+1 dst
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| 272 | m = PPW - x
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| 273 | n = w - m
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| 274 |
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| 275 | implementation:
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| 276 | get m pixels, move to screen-left of dst, zeroing rest of dst;
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| 277 | get n pixels from next word, move screen-right by m, zeroing
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| 278 | lower m pixels of word.
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| 279 | OR the two things together.
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| 280 |
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| 281 | putbits(src, x, w, pdst, planemask)
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| 282 | starting at position x in pdst, put down the screen-leftmost
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| 283 | w bits of src. pdst is a longword pointer. this may
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| 284 | span longword boundaries.
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| 285 | it special-cases putting all w bits into the same longword.
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| 286 |
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| 287 | +--------+ +--------+--------+
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| 288 | | m |n| | ==> | | m |n| |
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| 289 | +--------+ +--------+--------+
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| 290 | 0 w x x+w
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| 291 | dst pdst pdst+1
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| 292 | m = PPW - x
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| 293 | n = w - m
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| 294 |
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| 295 | implementation:
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| 296 | get m pixels, shift screen-right by x, zero screen-leftmost x
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| 297 | pixels; zero rightmost m bits of *pdst and OR in stuff
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| 298 | from before the semicolon.
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| 299 | shift src screen-left by m, zero bits n-32;
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| 300 | zero leftmost n pixels of *(pdst+1) and OR in the
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| 301 | stuff from before the semicolon.
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| 302 |
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| 303 | putbitsrop(src, x, w, pdst, planemask, ROP)
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| 304 | like putbits but calls DoRop with the rasterop ROP (see cfb.h for
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| 305 | DoRop)
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| 306 |
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| 307 | getleftbits(psrc, w, dst)
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| 308 | get the leftmost w (w<=PPW) bits from *psrc and put them
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| 309 | in dst. this is used by the cfbGlyphBlt code for glyphs
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| 310 | <=PPW bits wide.
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| 311 | */
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| 312 |
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| 313 | #if (BITMAP_BIT_ORDER == MSBFirst)
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| 314 | #define BitRight(lw,n) ((lw) >> (n))
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| 315 | #define BitLeft(lw,n) ((lw) << (n))
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| 316 | #else /* (BITMAP_BIT_ORDER == LSBFirst) */
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| 317 | #define BitRight(lw,n) ((lw) << (n))
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| 318 | #define BitLeft(lw,n) ((lw) >> (n))
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| 319 | #endif /* (BITMAP_BIT_ORDER == MSBFirst) */
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| 320 |
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| 321 | #define SCRLEFT(lw, n) BitLeft (lw, (n) * PSZ)
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| 322 | #define SCRRIGHT(lw, n) BitRight(lw, (n) * PSZ)
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| 323 |
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| 324 | /*
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| 325 | * Note that the shift direction is independent of the byte ordering of the
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| 326 | * machine. The following is portable code.
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| 327 | */
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| 328 | #if PPW == 16
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| 329 | #define PFILL(p) ( ((p)&PMSK) | \
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| 330 | ((p)&PMSK) << PSZ | \
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| 331 | ((p)&PMSK) << 2*PSZ | \
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| 332 | ((p)&PMSK) << 3*PSZ | \
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| 333 | ((p)&PMSK) << 4*PSZ | \
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| 334 | ((p)&PMSK) << 5*PSZ | \
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| 335 | ((p)&PMSK) << 6*PSZ | \
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| 336 | ((p)&PMSK) << 7*PSZ | \
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| 337 | ((p)&PMSK) << 8*PSZ | \
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| 338 | ((p)&PMSK) << 9*PSZ | \
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| 339 | ((p)&PMSK) << 10*PSZ | \
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| 340 | ((p)&PMSK) << 11*PSZ | \
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| 341 | ((p)&PMSK) << 12*PSZ | \
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| 342 | ((p)&PMSK) << 13*PSZ | \
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| 343 | ((p)&PMSK) << 14*PSZ | \
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| 344 | ((p)&PMSK) << 15*PSZ )
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| 345 | #define PFILL2(p, pf) { \
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| 346 | pf = (p) & PMSK; \
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| 347 | pf |= (pf << PSZ); \
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| 348 | pf |= (pf << 2*PSZ); \
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| 349 | pf |= (pf << 4*PSZ); \
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| 350 | pf |= (pf << 8*PSZ); \
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| 351 | }
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| 352 | #endif /* PPW == 16 */
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| 353 | #if PPW == 8
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| 354 | #define PFILL(p) ( ((p)&PMSK) | \
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| 355 | ((p)&PMSK) << PSZ | \
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| 356 | ((p)&PMSK) << 2*PSZ | \
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| 357 | ((p)&PMSK) << 3*PSZ | \
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| 358 | ((p)&PMSK) << 4*PSZ | \
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| 359 | ((p)&PMSK) << 5*PSZ | \
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| 360 | ((p)&PMSK) << 6*PSZ | \
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| 361 | ((p)&PMSK) << 7*PSZ )
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| 362 | #define PFILL2(p, pf) { \
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| 363 | pf = (p) & PMSK; \
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| 364 | pf |= (pf << PSZ); \
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| 365 | pf |= (pf << 2*PSZ); \
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| 366 | pf |= (pf << 4*PSZ); \
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| 367 | }
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| 368 | #endif
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| 369 | #if PPW == 4
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| 370 | #define PFILL(p) ( ((p)&PMSK) | \
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| 371 | ((p)&PMSK) << PSZ | \
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| 372 | ((p)&PMSK) << 2*PSZ | \
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| 373 | ((p)&PMSK) << 3*PSZ )
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| 374 | #define PFILL2(p, pf) { \
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| 375 | pf = (p) & PMSK; \
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| 376 | pf |= (pf << PSZ); \
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| 377 | pf |= (pf << 2*PSZ); \
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| 378 | }
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| 379 | #endif
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| 380 | #if PPW == 2
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| 381 | #define PFILL(p) ( ((p)&PMSK) | \
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| 382 | ((p)&PMSK) << PSZ )
|
|---|
| 383 | #define PFILL2(p, pf) { \
|
|---|
| 384 | pf = (p) & PMSK; \
|
|---|
| 385 | pf |= (pf << PSZ); \
|
|---|
| 386 | }
|
|---|
| 387 | #endif
|
|---|
| 388 | #if PPW == 1
|
|---|
| 389 | #define PFILL(p) (p)
|
|---|
| 390 | #define PFILL2(p,pf) (pf = (p))
|
|---|
| 391 | #endif
|
|---|
| 392 |
|
|---|
| 393 | /*
|
|---|
| 394 | * Reduced raster op - using precomputed values, perform the above
|
|---|
| 395 | * in three instructions
|
|---|
| 396 | */
|
|---|
| 397 |
|
|---|
| 398 | #define DoRRop(dst, and, xor) (((dst) & (and)) ^ (xor))
|
|---|
| 399 |
|
|---|
| 400 | #define DoMaskRRop(dst, and, xor, mask) \
|
|---|
| 401 | (((dst) & ((and) | ~(mask))) ^ (xor & mask))
|
|---|
| 402 |
|
|---|
| 403 | #if PSZ != 32 || PPW != 1
|
|---|
| 404 |
|
|---|
| 405 | # if (PSZ == 24 && PPW == 1)
|
|---|
| 406 | #define maskbits(x, w, startmask, endmask, nlw) {\
|
|---|
| 407 | startmask = cfbstarttab[(x)&3]; \
|
|---|
| 408 | endmask = cfbendtab[((x)+(w)) & 3]; \
|
|---|
| 409 | nlw = ((((x)+(w))*3)>>2) - (((x)*3 +3)>>2); \
|
|---|
| 410 | }
|
|---|
| 411 |
|
|---|
| 412 | #define mask32bits(x, w, startmask, endmask) \
|
|---|
| 413 | startmask = cfbstarttab[(x)&3]; \
|
|---|
| 414 | endmask = cfbendtab[((x)+(w)) & 3];
|
|---|
| 415 |
|
|---|
| 416 | #define maskpartialbits(x, w, mask) \
|
|---|
| 417 | mask = cfbstartpartial[(x) & 3] & cfbendpartial[((x)+(w)) & 3];
|
|---|
| 418 |
|
|---|
| 419 | #define maskbits24(x, w, startmask, endmask, nlw) \
|
|---|
| 420 | startmask = cfbstarttab24[(x) & 3]; \
|
|---|
| 421 | endmask = cfbendtab24[((x)+(w)) & 3]; \
|
|---|
| 422 | if (startmask){ \
|
|---|
| 423 | nlw = (((w) - (4 - ((x) & 3))) >> 2); \
|
|---|
| 424 | } else { \
|
|---|
| 425 | nlw = (w) >> 2; \
|
|---|
| 426 | }
|
|---|
| 427 |
|
|---|
| 428 | #define getbits24(psrc, dst, index) {\
|
|---|
| 429 | register int idx; \
|
|---|
| 430 | switch(idx = ((index)&3)<<1){ \
|
|---|
| 431 | case 0: \
|
|---|
| 432 | dst = (*(psrc) &cfbmask[idx]); \
|
|---|
| 433 | break; \
|
|---|
| 434 | case 6: \
|
|---|
| 435 | dst = BitLeft((*(psrc) &cfbmask[idx]), cfb24Shift[idx]); \
|
|---|
| 436 | break; \
|
|---|
| 437 | default: \
|
|---|
| 438 | dst = BitLeft((*(psrc) &cfbmask[idx]), cfb24Shift[idx]) | \
|
|---|
| 439 | BitRight(((*((psrc)+1)) &cfbmask[idx+1]), cfb24Shift[idx+1]); \
|
|---|
| 440 | }; \
|
|---|
| 441 | }
|
|---|
| 442 |
|
|---|
| 443 | #define putbits24(src, w, pdst, planemask, index) {\
|
|---|
| 444 | register PixelGroup dstpixel; \
|
|---|
| 445 | register unsigned int idx; \
|
|---|
| 446 | switch(idx = ((index)&3)<<1){ \
|
|---|
| 447 | case 0: \
|
|---|
| 448 | dstpixel = (*(pdst) &cfbmask[idx]); \
|
|---|
| 449 | break; \
|
|---|
| 450 | case 6: \
|
|---|
| 451 | dstpixel = BitLeft((*(pdst) &cfbmask[idx]), cfb24Shift[idx]); \
|
|---|
| 452 | break; \
|
|---|
| 453 | default: \
|
|---|
| 454 | dstpixel = BitLeft((*(pdst) &cfbmask[idx]), cfb24Shift[idx])| \
|
|---|
| 455 | BitRight(((*((pdst)+1)) &cfbmask[idx+1]), cfb24Shift[idx+1]); \
|
|---|
| 456 | }; \
|
|---|
| 457 | dstpixel &= ~(planemask); \
|
|---|
| 458 | dstpixel |= (src & planemask); \
|
|---|
| 459 | *(pdst) &= cfbrmask[idx]; \
|
|---|
| 460 | switch(idx){ \
|
|---|
| 461 | case 0: \
|
|---|
| 462 | *(pdst) |= (dstpixel & cfbmask[idx]); \
|
|---|
| 463 | break; \
|
|---|
| 464 | case 2: \
|
|---|
| 465 | case 4: \
|
|---|
| 466 | pdst++;idx++; \
|
|---|
| 467 | *(pdst) = ((*(pdst)) & cfbrmask[idx]) | \
|
|---|
| 468 | (BitLeft(dstpixel, cfb24Shift[idx]) & cfbmask[idx]); \
|
|---|
| 469 | pdst--;idx--; \
|
|---|
| 470 | case 6: \
|
|---|
| 471 | *(pdst) |= (BitRight(dstpixel, cfb24Shift[idx]) & cfbmask[idx]); \
|
|---|
| 472 | break; \
|
|---|
| 473 | }; \
|
|---|
| 474 | }
|
|---|
| 475 |
|
|---|
| 476 | #define putbitsrop24(src, x, pdst, planemask, rop) \
|
|---|
| 477 | { \
|
|---|
| 478 | register PixelGroup t1, dstpixel; \
|
|---|
| 479 | register unsigned int idx; \
|
|---|
| 480 | switch(idx = (x)<<1){ \
|
|---|
| 481 | case 0: \
|
|---|
| 482 | dstpixel = (*(pdst) &cfbmask[idx]); \
|
|---|
| 483 | break; \
|
|---|
| 484 | case 6: \
|
|---|
| 485 | dstpixel = BitLeft((*(pdst) &cfbmask[idx]), cfb24Shift[idx]); \
|
|---|
| 486 | break; \
|
|---|
| 487 | default: \
|
|---|
| 488 | dstpixel = BitLeft((*(pdst) &cfbmask[idx]), cfb24Shift[idx])| \
|
|---|
| 489 | BitRight(((*((pdst)+1)) &cfbmask[idx+1]), cfb24Shift[idx+1]); \
|
|---|
| 490 | }; \
|
|---|
| 491 | DoRop(t1, rop, (src), dstpixel); \
|
|---|
| 492 | dstpixel &= ~planemask; \
|
|---|
| 493 | dstpixel |= (t1 & planemask); \
|
|---|
| 494 | *(pdst) &= cfbrmask[idx]; \
|
|---|
| 495 | switch(idx){ \
|
|---|
| 496 | case 0: \
|
|---|
| 497 | *(pdst) |= (dstpixel & cfbmask[idx]); \
|
|---|
| 498 | break; \
|
|---|
| 499 | case 2: \
|
|---|
| 500 | case 4: \
|
|---|
| 501 | *((pdst)+1) = ((*((pdst)+1)) & cfbrmask[idx+1]) | \
|
|---|
| 502 | (BitLeft(dstpixel, cfb24Shift[idx+1]) & (cfbmask[idx+1])); \
|
|---|
| 503 | case 6: \
|
|---|
| 504 | *(pdst) |= (BitRight(dstpixel, cfb24Shift[idx]) & cfbmask[idx]); \
|
|---|
| 505 | }; \
|
|---|
| 506 | }
|
|---|
| 507 | # else /* PSZ == 24 && PPW == 1 */
|
|---|
| 508 | #define maskbits(x, w, startmask, endmask, nlw) \
|
|---|
| 509 | startmask = cfbstarttab[(x)&PIM]; \
|
|---|
| 510 | endmask = cfbendtab[((x)+(w)) & PIM]; \
|
|---|
| 511 | if (startmask) \
|
|---|
| 512 | nlw = (((w) - (PPW - ((x)&PIM))) >> PWSH); \
|
|---|
| 513 | else \
|
|---|
| 514 | nlw = (w) >> PWSH;
|
|---|
| 515 |
|
|---|
| 516 | #define maskpartialbits(x, w, mask) \
|
|---|
| 517 | mask = cfbstartpartial[(x) & PIM] & cfbendpartial[((x) + (w)) & PIM];
|
|---|
| 518 |
|
|---|
| 519 | #define mask32bits(x, w, startmask, endmask) \
|
|---|
| 520 | startmask = cfbstarttab[(x)&PIM]; \
|
|---|
| 521 | endmask = cfbendtab[((x)+(w)) & PIM];
|
|---|
| 522 |
|
|---|
| 523 | /* FIXME */
|
|---|
| 524 | #define maskbits24(x, w, startmask, endmask, nlw) \
|
|---|
| 525 | abort()
|
|---|
| 526 | #define getbits24(psrc, dst, index) \
|
|---|
| 527 | abort()
|
|---|
| 528 | #define putbits24(src, w, pdst, planemask, index) \
|
|---|
| 529 | abort()
|
|---|
| 530 | #define putbitsrop24(src, x, pdst, planemask, rop) \
|
|---|
| 531 | abort()
|
|---|
| 532 |
|
|---|
| 533 | #endif /* PSZ == 24 && PPW == 1 */
|
|---|
| 534 |
|
|---|
| 535 | #define getbits(psrc, x, w, dst) \
|
|---|
| 536 | if ( ((x) + (w)) <= PPW) \
|
|---|
| 537 | { \
|
|---|
| 538 | dst = SCRLEFT(*(psrc), (x)); \
|
|---|
| 539 | } \
|
|---|
| 540 | else \
|
|---|
| 541 | { \
|
|---|
| 542 | int m; \
|
|---|
| 543 | m = PPW-(x); \
|
|---|
| 544 | dst = (SCRLEFT(*(psrc), (x)) & cfbendtab[m]) | \
|
|---|
| 545 | (SCRRIGHT(*((psrc)+1), m) & cfbstarttab[m]); \
|
|---|
| 546 | }
|
|---|
| 547 |
|
|---|
| 548 |
|
|---|
| 549 | #define putbits(src, x, w, pdst, planemask) \
|
|---|
| 550 | if ( ((x)+(w)) <= PPW) \
|
|---|
| 551 | { \
|
|---|
| 552 | PixelGroup tmpmask; \
|
|---|
| 553 | maskpartialbits((x), (w), tmpmask); \
|
|---|
| 554 | tmpmask &= PFILL(planemask); \
|
|---|
| 555 | *(pdst) = (*(pdst) & ~tmpmask) | (SCRRIGHT(src, x) & tmpmask); \
|
|---|
| 556 | } \
|
|---|
| 557 | else \
|
|---|
| 558 | { \
|
|---|
| 559 | unsigned int m; \
|
|---|
| 560 | unsigned int n; \
|
|---|
| 561 | PixelGroup pm = PFILL(planemask); \
|
|---|
| 562 | m = PPW-(x); \
|
|---|
| 563 | n = (w) - m; \
|
|---|
| 564 | *(pdst) = (*(pdst) & (cfbendtab[x] | ~pm)) | \
|
|---|
| 565 | (SCRRIGHT(src, x) & (cfbstarttab[x] & pm)); \
|
|---|
| 566 | *((pdst)+1) = (*((pdst)+1) & (cfbstarttab[n] | ~pm)) | \
|
|---|
| 567 | (SCRLEFT(src, m) & (cfbendtab[n] & pm)); \
|
|---|
| 568 | }
|
|---|
| 569 | #if defined(__GNUC__) && defined(mc68020)
|
|---|
| 570 | #undef getbits
|
|---|
| 571 | #define FASTGETBITS(psrc, x, w, dst) \
|
|---|
| 572 | asm ("bfextu %3{%1:%2},%0" \
|
|---|
| 573 | : "=d" (dst) : "di" (x), "di" (w), "o" (*(char *)(psrc)))
|
|---|
| 574 |
|
|---|
| 575 | #define getbits(psrc,x,w,dst) \
|
|---|
| 576 | { \
|
|---|
| 577 | FASTGETBITS(psrc, (x) * PSZ, (w) * PSZ, dst); \
|
|---|
| 578 | dst = SCRLEFT(dst,PPW-(w)); \
|
|---|
| 579 | }
|
|---|
| 580 |
|
|---|
| 581 | #define FASTPUTBITS(src, x, w, pdst) \
|
|---|
| 582 | asm ("bfins %3,%0{%1:%2}" \
|
|---|
| 583 | : "=o" (*(char *)(pdst)) \
|
|---|
| 584 | : "di" (x), "di" (w), "d" (src), "0" (*(char *) (pdst)))
|
|---|
| 585 |
|
|---|
| 586 | #undef putbits
|
|---|
| 587 | #define putbits(src, x, w, pdst, planemask) \
|
|---|
| 588 | { \
|
|---|
| 589 | if (planemask != PMSK) { \
|
|---|
| 590 | PixelGroup _m, _pm; \
|
|---|
| 591 | FASTGETBITS(pdst, (x) * PSZ , (w) * PSZ, _m); \
|
|---|
| 592 | PFILL2(planemask, _pm); \
|
|---|
| 593 | _m &= (~_pm); \
|
|---|
| 594 | _m |= (SCRRIGHT(src, PPW-(w)) & _pm); \
|
|---|
| 595 | FASTPUTBITS(_m, (x) * PSZ, (w) * PSZ, pdst); \
|
|---|
| 596 | } else { \
|
|---|
| 597 | FASTPUTBITS(SCRRIGHT(src, PPW-(w)), (x) * PSZ, (w) * PSZ, pdst); \
|
|---|
| 598 | } \
|
|---|
| 599 | }
|
|---|
| 600 |
|
|---|
| 601 |
|
|---|
| 602 | #endif /* mc68020 */
|
|---|
| 603 |
|
|---|
| 604 | #define putbitsrop(src, x, w, pdst, planemask, rop) \
|
|---|
| 605 | if ( ((x)+(w)) <= PPW) \
|
|---|
| 606 | { \
|
|---|
| 607 | PixelGroup tmpmask; \
|
|---|
| 608 | PixelGroup t1, t2; \
|
|---|
| 609 | maskpartialbits((x), (w), tmpmask); \
|
|---|
| 610 | PFILL2(planemask, t1); \
|
|---|
| 611 | tmpmask &= t1; \
|
|---|
| 612 | t1 = SCRRIGHT((src), (x)); \
|
|---|
| 613 | DoRop(t2, rop, t1, *(pdst)); \
|
|---|
| 614 | *(pdst) = (*(pdst) & ~tmpmask) | (t2 & tmpmask); \
|
|---|
| 615 | } \
|
|---|
| 616 | else \
|
|---|
| 617 | { \
|
|---|
| 618 | CfbBits m; \
|
|---|
| 619 | CfbBits n; \
|
|---|
| 620 | PixelGroup t1, t2; \
|
|---|
| 621 | PixelGroup pm; \
|
|---|
| 622 | PFILL2(planemask, pm); \
|
|---|
| 623 | m = PPW-(x); \
|
|---|
| 624 | n = (w) - m; \
|
|---|
| 625 | t1 = SCRRIGHT((src), (x)); \
|
|---|
| 626 | DoRop(t2, rop, t1, *(pdst)); \
|
|---|
| 627 | *(pdst) = (*(pdst) & (cfbendtab[x] | ~pm)) | (t2 & (cfbstarttab[x] & pm));\
|
|---|
| 628 | t1 = SCRLEFT((src), m); \
|
|---|
| 629 | DoRop(t2, rop, t1, *((pdst) + 1)); \
|
|---|
| 630 | *((pdst)+1) = (*((pdst)+1) & (cfbstarttab[n] | ~pm)) | \
|
|---|
| 631 | (t2 & (cfbendtab[n] & pm)); \
|
|---|
| 632 | }
|
|---|
| 633 |
|
|---|
| 634 | #else /* PSZ == 32 && PPW == 1*/
|
|---|
| 635 |
|
|---|
| 636 | /*
|
|---|
| 637 | * These macros can be optimized for 32-bit pixels since there is no
|
|---|
| 638 | * need to worry about left/right edge masking. These macros were
|
|---|
| 639 | * derived from the above using the following reductions:
|
|---|
| 640 | *
|
|---|
| 641 | * - x & PIW = 0 [since PIW = 0]
|
|---|
| 642 | * - all masking tables are only indexed by 0 [ due to above ]
|
|---|
| 643 | * - cfbstartab[0] and cfbendtab[0] = 0 [ no left/right edge masks]
|
|---|
| 644 | * - cfbstartpartial[0] and cfbendpartial[0] = ~0 [no partial pixel mask]
|
|---|
| 645 | *
|
|---|
| 646 | * Macro reduction based upon constants cannot be performed automatically
|
|---|
| 647 | * by the compiler since it does not know the contents of the masking
|
|---|
| 648 | * arrays in cfbmskbits.c.
|
|---|
| 649 | */
|
|---|
| 650 | #define maskbits(x, w, startmask, endmask, nlw) \
|
|---|
| 651 | startmask = endmask = 0; \
|
|---|
| 652 | nlw = (w);
|
|---|
| 653 |
|
|---|
| 654 | #define maskpartialbits(x, w, mask) \
|
|---|
| 655 | mask = 0xFFFFFFFF;
|
|---|
| 656 |
|
|---|
| 657 | #define mask32bits(x, w, startmask, endmask) \
|
|---|
| 658 | startmask = endmask = 0;
|
|---|
| 659 |
|
|---|
| 660 | /*
|
|---|
| 661 | * For 32-bit operations, getbits(), putbits(), and putbitsrop()
|
|---|
| 662 | * will only be invoked with x = 0 and w = PPW (1). The getbits()
|
|---|
| 663 | * macro is only called within left/right edge logic, which doesn't
|
|---|
| 664 | * happen for 32-bit pixels.
|
|---|
| 665 | */
|
|---|
| 666 | #define getbits(psrc, x, w, dst) (dst) = *(psrc)
|
|---|
| 667 |
|
|---|
| 668 | #define putbits(src, x, w, pdst, planemask) \
|
|---|
| 669 | *(pdst) = (*(pdst) & ~planemask) | (src & planemask);
|
|---|
| 670 |
|
|---|
| 671 | #define putbitsrop(src, x, w, pdst, planemask, rop) \
|
|---|
| 672 | { \
|
|---|
| 673 | PixelGroup t1; \
|
|---|
| 674 | DoRop(t1, rop, (src), *(pdst)); \
|
|---|
| 675 | *(pdst) = (*(pdst) & ~planemask) | (t1 & planemask); \
|
|---|
| 676 | }
|
|---|
| 677 |
|
|---|
| 678 | #endif /* PSZ != 32 */
|
|---|
| 679 |
|
|---|
| 680 | /*
|
|---|
| 681 | * Use these macros only when you're using the MergeRop stuff
|
|---|
| 682 | * in ../mfb/mergerop.h
|
|---|
| 683 | */
|
|---|
| 684 |
|
|---|
| 685 | /* useful only when not spanning destination longwords */
|
|---|
| 686 | #if PSZ == 24
|
|---|
| 687 | #define putbitsmropshort24(src,x,w,pdst,index) {\
|
|---|
| 688 | PixelGroup _tmpmask; \
|
|---|
| 689 | PixelGroup _t1; \
|
|---|
| 690 | maskpartialbits ((x), (w), _tmpmask); \
|
|---|
| 691 | _t1 = SCRRIGHT((src), (x)); \
|
|---|
| 692 | DoMaskMergeRop24(_t1, pdst, _tmpmask, index); \
|
|---|
| 693 | }
|
|---|
| 694 | #endif
|
|---|
| 695 | #define putbitsmropshort(src,x,w,pdst) {\
|
|---|
| 696 | PixelGroup _tmpmask; \
|
|---|
| 697 | PixelGroup _t1; \
|
|---|
| 698 | maskpartialbits ((x), (w), _tmpmask); \
|
|---|
| 699 | _t1 = SCRRIGHT((src), (x)); \
|
|---|
| 700 | *pdst = DoMaskMergeRop(_t1, *pdst, _tmpmask); \
|
|---|
| 701 | }
|
|---|
| 702 |
|
|---|
| 703 | /* useful only when spanning destination longwords */
|
|---|
| 704 | #define putbitsmroplong(src,x,w,pdst) { \
|
|---|
| 705 | PixelGroup _startmask, _endmask; \
|
|---|
| 706 | int _m; \
|
|---|
| 707 | PixelGroup _t1; \
|
|---|
| 708 | _m = PPW - (x); \
|
|---|
| 709 | _startmask = cfbstarttab[x]; \
|
|---|
| 710 | _endmask = cfbendtab[(w) - _m]; \
|
|---|
| 711 | _t1 = SCRRIGHT((src), (x)); \
|
|---|
| 712 | pdst[0] = DoMaskMergeRop(_t1,pdst[0],_startmask); \
|
|---|
| 713 | _t1 = SCRLEFT ((src),_m); \
|
|---|
| 714 | pdst[1] = DoMaskMergeRop(_t1,pdst[1],_endmask); \
|
|---|
| 715 | }
|
|---|
| 716 |
|
|---|
| 717 | #define putbitsmrop(src,x,w,pdst) \
|
|---|
| 718 | if ((x) + (w) <= PPW) {\
|
|---|
| 719 | putbitsmropshort(src,x,w,pdst); \
|
|---|
| 720 | } else { \
|
|---|
| 721 | putbitsmroplong(src,x,w,pdst); \
|
|---|
| 722 | }
|
|---|
| 723 |
|
|---|
| 724 | #if GETLEFTBITS_ALIGNMENT == 1
|
|---|
| 725 | #define getleftbits(psrc, w, dst) dst = *((unsigned int *) psrc)
|
|---|
| 726 | #define getleftbits24(psrc, w, dst, idx){ \
|
|---|
| 727 | regiseter int index; \
|
|---|
| 728 | switch(index = ((idx)&3)<<1){ \
|
|---|
| 729 | case 0: \
|
|---|
| 730 | dst = (*((unsigned int *) psrc))&cfbmask[index]; \
|
|---|
| 731 | break; \
|
|---|
| 732 | case 2: \
|
|---|
| 733 | case 4: \
|
|---|
| 734 | dst = BitLeft(((*((unsigned int *) psrc))&cfbmask[index]), cfb24Shift[index]); \
|
|---|
| 735 | dst |= BitRight(((*((unsigned int *) psrc)+1)&cfbmask[index]), cfb4Shift[index]); \
|
|---|
| 736 | break; \
|
|---|
| 737 | case 6: \
|
|---|
| 738 | dst = BitLeft((*((unsigned int *) psrc)),cfb24Shift[index]); \
|
|---|
| 739 | break; \
|
|---|
| 740 | }; \
|
|---|
| 741 | }
|
|---|
| 742 | #endif /* GETLEFTBITS_ALIGNMENT == 1 */
|
|---|
| 743 |
|
|---|
| 744 | #define getglyphbits(psrc, x, w, dst) \
|
|---|
| 745 | { \
|
|---|
| 746 | dst = BitLeft((unsigned) *(psrc), (x)); \
|
|---|
| 747 | if ( ((x) + (w)) > 32) \
|
|---|
| 748 | dst |= (BitRight((unsigned) *((psrc)+1), 32-(x))); \
|
|---|
| 749 | }
|
|---|
| 750 | #if GETLEFTBITS_ALIGNMENT == 2
|
|---|
| 751 | #define getleftbits(psrc, w, dst) \
|
|---|
| 752 | { \
|
|---|
| 753 | if ( ((int)(psrc)) & 0x01 ) \
|
|---|
| 754 | getglyphbits( ((unsigned int *)(((char *)(psrc))-1)), 8, (w), (dst) ); \
|
|---|
| 755 | else \
|
|---|
| 756 | dst = *((unsigned int *) psrc); \
|
|---|
| 757 | }
|
|---|
| 758 | #endif /* GETLEFTBITS_ALIGNMENT == 2 */
|
|---|
| 759 |
|
|---|
| 760 | #if GETLEFTBITS_ALIGNMENT == 4
|
|---|
| 761 | #define getleftbits(psrc, w, dst) \
|
|---|
| 762 | { \
|
|---|
| 763 | int off, off_b; \
|
|---|
| 764 | off_b = (off = ( ((int)(psrc)) & 0x03)) << 3; \
|
|---|
| 765 | getglyphbits( \
|
|---|
| 766 | (unsigned int *)( ((char *)(psrc)) - off), \
|
|---|
| 767 | (off_b), (w), (dst) \
|
|---|
| 768 | ); \
|
|---|
| 769 | }
|
|---|
| 770 | #endif /* GETLEFTBITS_ALIGNMENT == 4 */
|
|---|
| 771 |
|
|---|
| 772 | /*
|
|---|
| 773 | * getstipplepixels( psrcstip, x, w, ones, psrcpix, destpix )
|
|---|
| 774 | *
|
|---|
| 775 | * Converts bits to pixels in a reasonable way. Takes w (1 <= w <= PPW)
|
|---|
| 776 | * bits from *psrcstip, starting at bit x; call this a quartet of bits.
|
|---|
| 777 | * Then, takes the pixels from *psrcpix corresponding to the one-bits (if
|
|---|
| 778 | * ones is TRUE) or the zero-bits (if ones is FALSE) of the quartet
|
|---|
| 779 | * and puts these pixels into destpix.
|
|---|
| 780 | *
|
|---|
| 781 | * Example:
|
|---|
| 782 | *
|
|---|
| 783 | * getstipplepixels( &(0x08192A3B), 17, 4, 1, &(0x4C5D6E7F), dest )
|
|---|
| 784 | *
|
|---|
| 785 | * 0x08192A3B = 0000 1000 0001 1001 0010 1010 0011 1011
|
|---|
| 786 | *
|
|---|
| 787 | * This will take 4 bits starting at bit 17, so the quartet is 0x5 = 0101.
|
|---|
| 788 | * It will take pixels from 0x4C5D6E7F corresponding to the one-bits in this
|
|---|
| 789 | * quartet, so dest = 0x005D007F.
|
|---|
| 790 | *
|
|---|
| 791 | * XXX Works with both byte order.
|
|---|
| 792 | * XXX This works for all values of x and w within a doubleword.
|
|---|
| 793 | */
|
|---|
| 794 | #if (BITMAP_BIT_ORDER == MSBFirst)
|
|---|
| 795 | #define getstipplepixels( psrcstip, x, w, ones, psrcpix, destpix ) \
|
|---|
| 796 | { \
|
|---|
| 797 | PixelGroup q; \
|
|---|
| 798 | int m; \
|
|---|
| 799 | if ((m = ((x) - ((PPW*PSZ)-PPW))) > 0) { \
|
|---|
| 800 | q = (*(psrcstip)) << m; \
|
|---|
| 801 | if ( (x)+(w) > (PPW*PSZ) ) \
|
|---|
| 802 | q |= *((psrcstip)+1) >> ((PPW*PSZ)-m); \
|
|---|
| 803 | } \
|
|---|
| 804 | else \
|
|---|
| 805 | q = (*(psrcstip)) >> -m; \
|
|---|
| 806 | q = QuartetBitsTable[(w)] & ((ones) ? q : ~q); \
|
|---|
| 807 | *(destpix) = (*(psrcpix)) & QuartetPixelMaskTable[q]; \
|
|---|
| 808 | }
|
|---|
| 809 | /* I just copied this to get the linker satisfied on PowerPC,
|
|---|
| 810 | * so this may not be correct at all.
|
|---|
| 811 | */
|
|---|
| 812 | #define getstipplepixels24(psrcstip,xt,ones,psrcpix,destpix,stipindex) \
|
|---|
| 813 | { \
|
|---|
| 814 | PixelGroup q; \
|
|---|
| 815 | q = *(psrcstip) >> (xt); \
|
|---|
| 816 | q = ((ones) ? q : ~q) & 1; \
|
|---|
| 817 | *(destpix) = (*(psrcpix)) & QuartetPixelMaskTable[q]; \
|
|---|
| 818 | }
|
|---|
| 819 | #else /* BITMAP_BIT_ORDER == LSB */
|
|---|
| 820 |
|
|---|
| 821 | /* this must load 32 bits worth; for most machines, thats an int */
|
|---|
| 822 | #define CfbFetchUnaligned(x) ldl_u(x)
|
|---|
| 823 |
|
|---|
| 824 | #define getstipplepixels( psrcstip, xt, w, ones, psrcpix, destpix ) \
|
|---|
| 825 | { \
|
|---|
| 826 | PixelGroup q; \
|
|---|
| 827 | q = CfbFetchUnaligned(psrcstip) >> (xt); \
|
|---|
| 828 | if ( ((xt)+(w)) > (PPW*PSZ) ) \
|
|---|
| 829 | q |= (CfbFetchUnaligned((psrcstip)+1)) << ((PPW*PSZ)-(xt)); \
|
|---|
| 830 | q = QuartetBitsTable[(w)] & ((ones) ? q : ~q); \
|
|---|
| 831 | *(destpix) = (*(psrcpix)) & QuartetPixelMaskTable[q]; \
|
|---|
| 832 | }
|
|---|
| 833 | #if PSZ == 24
|
|---|
| 834 | #define getstipplepixels24(psrcstip,xt,ones,psrcpix,destpix,stipindex) \
|
|---|
| 835 | { \
|
|---|
| 836 | PixelGroup q; \
|
|---|
| 837 | q = *(psrcstip) >> (xt); \
|
|---|
| 838 | q = ((ones) ? q : ~q) & 1; \
|
|---|
| 839 | *(destpix) = (*(psrcpix)) & QuartetPixelMaskTable[q]; \
|
|---|
| 840 | }
|
|---|
| 841 | #endif /* PSZ == 24 */
|
|---|
| 842 | #endif
|
|---|
| 843 |
|
|---|
| 844 | extern PixelGroup cfbstarttab[];
|
|---|
| 845 | extern PixelGroup cfbendtab[];
|
|---|
| 846 | extern PixelGroup cfbstartpartial[];
|
|---|
| 847 | extern PixelGroup cfbendpartial[];
|
|---|
| 848 | extern PixelGroup cfbrmask[];
|
|---|
| 849 | extern PixelGroup cfbmask[];
|
|---|
| 850 | extern PixelGroup QuartetBitsTable[];
|
|---|
| 851 | extern PixelGroup QuartetPixelMaskTable[];
|
|---|
| 852 | #if PSZ == 24
|
|---|
| 853 | extern int cfb24Shift[];
|
|---|
| 854 | #endif
|
|---|
