hw/cirrus_vga_rop.h

   1 /*
   2  * QEMU Cirrus CLGD 54xx VGA Emulator.
   3  *
   4  * Copyright (c) 2004 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 static void
  26 glue(cirrus_bitblt_rop_fwd_, ROP_NAME)(CirrusVGAState *s,
  27                              uint8_t *dst,const uint8_t *src,
  28                              int dstpitch,int srcpitch,
  29                              int bltwidth,int bltheight)
  30 {
  31     int x,y;
  32     dstpitch -= bltwidth;
  33     srcpitch -= bltwidth;
  34
  35     if (dstpitch < 0 || srcpitch < 0) {
  36         /* is 0 valid? srcpitch == 0 could be useful */
  37         return;
  38     }
  39
  40     for (y = 0; y < bltheight; y++) {
  41         for (x = 0; x < bltwidth; x++) {
  42             ROP_OP(*dst, *src);
  43             dst++;
  44             src++;
  45         }
  46         dst += dstpitch;
  47         src += srcpitch;
  48     }
  49 }
  50
  51 static void
  52 glue(cirrus_bitblt_rop_bkwd_, ROP_NAME)(CirrusVGAState *s,
  53                                         uint8_t *dst,const uint8_t *src,
  54                                         int dstpitch,int srcpitch,
  55                                         int bltwidth,int bltheight)
  56 {
  57     int x,y;
  58     dstpitch += bltwidth;
  59     srcpitch += bltwidth;
  60     for (y = 0; y < bltheight; y++) {
  61         for (x = 0; x < bltwidth; x++) {
  62             ROP_OP(*dst, *src);
  63             dst--;
  64             src--;
  65         }
  66         dst += dstpitch;
  67         src += srcpitch;
  68     }
  69 }
  70
  71 static void
  72 glue(glue(cirrus_bitblt_rop_fwd_transp_, ROP_NAME),_8)(CirrusVGAState *s,
  73                                                        uint8_t *dst,const uint8_t *src,
  74                                                        int dstpitch,int srcpitch,
  75                                                        int bltwidth,int bltheight)
  76 {
  77     int x,y;
  78     uint8_t p;
  79     dstpitch -= bltwidth;
  80     srcpitch -= bltwidth;
  81     for (y = 0; y < bltheight; y++) {
  82         for (x = 0; x < bltwidth; x++) {
  83             p = *dst;
  84             ROP_OP(p, *src);
  85             if (p != s->vga.gr[0x34]) *dst = p;
  86             dst++;
  87             src++;
  88         }
  89         dst += dstpitch;
  90         src += srcpitch;
  91     }
  92 }
  93
  94 static void
  95 glue(glue(cirrus_bitblt_rop_bkwd_transp_, ROP_NAME),_8)(CirrusVGAState *s,
  96                                                         uint8_t *dst,const uint8_t *src,
  97                                                         int dstpitch,int srcpitch,
  98                                                         int bltwidth,int bltheight)
  99 {
 100     int x,y;
 101     uint8_t p;
 102     dstpitch += bltwidth;
 103     srcpitch += bltwidth;
 104     for (y = 0; y < bltheight; y++) {
 105         for (x = 0; x < bltwidth; x++) {
 106             p = *dst;
 107             ROP_OP(p, *src);
 108             if (p != s->vga.gr[0x34]) *dst = p;
 109             dst--;
 110             src--;
 111         }
 112         dst += dstpitch;
 113         src += srcpitch;
 114     }
 115 }
 116
 117 static void
 118 glue(glue(cirrus_bitblt_rop_fwd_transp_, ROP_NAME),_16)(CirrusVGAState *s,
 119                                                         uint8_t *dst,const uint8_t *src,
 120                                                         int dstpitch,int srcpitch,
 121                                                         int bltwidth,int bltheight)
 122 {
 123     int x,y;
 124     uint8_t p1, p2;
 125     dstpitch -= bltwidth;
 126     srcpitch -= bltwidth;
 127     for (y = 0; y < bltheight; y++) {
 128         for (x = 0; x < bltwidth; x+=2) {
 129             p1 = *dst;
 130             p2 = *(dst+1);
 131             ROP_OP(p1, *src);
 132             ROP_OP(p2, *(src+1));
 133             if ((p1 != s->vga.gr[0x34]) || (p2 != s->vga.gr[0x35])) {
 134                 *dst = p1;
 135                 *(dst+1) = p2;
 136             }
 137             dst+=2;
 138             src+=2;
 139         }
 140         dst += dstpitch;
 141         src += srcpitch;
 142     }
 143 }
 144
 145 static void
 146 glue(glue(cirrus_bitblt_rop_bkwd_transp_, ROP_NAME),_16)(CirrusVGAState *s,
 147                                                          uint8_t *dst,const uint8_t *src,
 148                                                          int dstpitch,int srcpitch,
 149                                                          int bltwidth,int bltheight)
 150 {
 151     int x,y;
 152     uint8_t p1, p2;
 153     dstpitch += bltwidth;
 154     srcpitch += bltwidth;
 155     for (y = 0; y < bltheight; y++) {
 156         for (x = 0; x < bltwidth; x+=2) {
 157             p1 = *(dst-1);
 158             p2 = *dst;
 159             ROP_OP(p1, *(src-1));
 160             ROP_OP(p2, *src);
 161             if ((p1 != s->vga.gr[0x34]) || (p2 != s->vga.gr[0x35])) {
 162                 *(dst-1) = p1;
 163                 *dst = p2;
 164             }
 165             dst-=2;
 166             src-=2;
 167         }
 168         dst += dstpitch;
 169         src += srcpitch;
 170     }
 171 }
 172
 173 #define DEPTH 8
 174 #include "cirrus_vga_rop2.h"
 175
 176 #define DEPTH 16
 177 #include "cirrus_vga_rop2.h"
 178
 179 #define DEPTH 24
 180 #include "cirrus_vga_rop2.h"
 181
 182 #define DEPTH 32
 183 #include "cirrus_vga_rop2.h"
 184
 185 #undef ROP_NAME
 186 #undef ROP_OP