hw/display/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 inline void glue(rop_8_,ROP_NAME)(uint8_t *dst, uint8_t src)
  26 {
  27     *dst = ROP_FN(*dst, src);
  28 }
  29
  30 static inline void glue(rop_16_,ROP_NAME)(uint16_t *dst, uint16_t src)
  31 {
  32     *dst = ROP_FN(*dst, src);
  33 }
  34
  35 static inline void glue(rop_32_,ROP_NAME)(uint32_t *dst, uint32_t src)
  36 {
  37     *dst = ROP_FN(*dst, src);
  38 }
  39
  40 #define ROP_OP(d, s) glue(rop_8_,ROP_NAME)(d, s)
  41 #define ROP_OP_16(d, s) glue(rop_16_,ROP_NAME)(d, s)
  42 #define ROP_OP_32(d, s) glue(rop_32_,ROP_NAME)(d, s)
  43 #undef ROP_FN
  44
  45 static void
  46 glue(cirrus_bitblt_rop_fwd_, ROP_NAME)(CirrusVGAState *s,
  47                              uint8_t *dst,const uint8_t *src,
  48                              int dstpitch,int srcpitch,
  49                              int bltwidth,int bltheight)
  50 {
  51     int x,y;
  52     dstpitch -= bltwidth;
  53     srcpitch -= bltwidth;
  54
  55     if (dstpitch < 0 || srcpitch < 0) {
  56         /* is 0 valid? srcpitch == 0 could be useful */
  57         return;
  58     }
  59
  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(cirrus_bitblt_rop_bkwd_, ROP_NAME)(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     dstpitch += bltwidth;
  79     srcpitch += bltwidth;
  80     for (y = 0; y < bltheight; y++) {
  81         for (x = 0; x < bltwidth; x++) {
  82             ROP_OP(dst, *src);
  83             dst--;
  84             src--;
  85         }
  86         dst += dstpitch;
  87         src += srcpitch;
  88     }
  89 }
  90
  91 static void
  92 glue(glue(cirrus_bitblt_rop_fwd_transp_, ROP_NAME),_8)(CirrusVGAState *s,
  93                                                        uint8_t *dst,const uint8_t *src,
  94                                                        int dstpitch,int srcpitch,
  95                                                        int bltwidth,int bltheight)
  96 {
  97     int x,y;
  98     uint8_t p;
  99     dstpitch -= bltwidth;
 100     srcpitch -= bltwidth;
 101     for (y = 0; y < bltheight; y++) {
 102         for (x = 0; x < bltwidth; x++) {
 103             p = *dst;
 104             ROP_OP(&p, *src);
 105             if (p != s->vga.gr[0x34]) *dst = p;
 106             dst++;
 107             src++;
 108         }
 109         dst += dstpitch;
 110         src += srcpitch;
 111     }
 112 }
 113
 114 static void
 115 glue(glue(cirrus_bitblt_rop_bkwd_transp_, ROP_NAME),_8)(CirrusVGAState *s,
 116                                                         uint8_t *dst,const uint8_t *src,
 117                                                         int dstpitch,int srcpitch,
 118                                                         int bltwidth,int bltheight)
 119 {
 120     int x,y;
 121     uint8_t p;
 122     dstpitch += bltwidth;
 123     srcpitch += bltwidth;
 124     for (y = 0; y < bltheight; y++) {
 125         for (x = 0; x < bltwidth; x++) {
 126             p = *dst;
 127             ROP_OP(&p, *src);
 128             if (p != s->vga.gr[0x34]) *dst = p;
 129             dst--;
 130             src--;
 131         }
 132         dst += dstpitch;
 133         src += srcpitch;
 134     }
 135 }
 136
 137 static void
 138 glue(glue(cirrus_bitblt_rop_fwd_transp_, ROP_NAME),_16)(CirrusVGAState *s,
 139                                                         uint8_t *dst,const uint8_t *src,
 140                                                         int dstpitch,int srcpitch,
 141                                                         int bltwidth,int bltheight)
 142 {
 143     int x,y;
 144     uint8_t p1, p2;
 145     dstpitch -= bltwidth;
 146     srcpitch -= bltwidth;
 147     for (y = 0; y < bltheight; y++) {
 148         for (x = 0; x < bltwidth; x+=2) {
 149             p1 = *dst;
 150             p2 = *(dst+1);
 151             ROP_OP(&p1, *src);
 152             ROP_OP(&p2, *(src + 1));
 153             if ((p1 != s->vga.gr[0x34]) || (p2 != s->vga.gr[0x35])) {
 154                 *dst = p1;
 155                 *(dst+1) = p2;
 156             }
 157             dst+=2;
 158             src+=2;
 159         }
 160         dst += dstpitch;
 161         src += srcpitch;
 162     }
 163 }
 164
 165 static void
 166 glue(glue(cirrus_bitblt_rop_bkwd_transp_, ROP_NAME),_16)(CirrusVGAState *s,
 167                                                          uint8_t *dst,const uint8_t *src,
 168                                                          int dstpitch,int srcpitch,
 169                                                          int bltwidth,int bltheight)
 170 {
 171     int x,y;
 172     uint8_t p1, p2;
 173     dstpitch += bltwidth;
 174     srcpitch += bltwidth;
 175     for (y = 0; y < bltheight; y++) {
 176         for (x = 0; x < bltwidth; x+=2) {
 177             p1 = *(dst-1);
 178             p2 = *dst;
 179             ROP_OP(&p1, *(src - 1));
 180             ROP_OP(&p2, *src);
 181             if ((p1 != s->vga.gr[0x34]) || (p2 != s->vga.gr[0x35])) {
 182                 *(dst-1) = p1;
 183                 *dst = p2;
 184             }
 185             dst-=2;
 186             src-=2;
 187         }
 188         dst += dstpitch;
 189         src += srcpitch;
 190     }
 191 }
 192
 193 #define DEPTH 8
 194 #include "cirrus_vga_rop2.h"
 195
 196 #define DEPTH 16
 197 #include "cirrus_vga_rop2.h"
 198
 199 #define DEPTH 24
 200 #include "cirrus_vga_rop2.h"
 201
 202 #define DEPTH 32
 203 #include "cirrus_vga_rop2.h"
 204
 205 #undef ROP_NAME
 206 #undef ROP_OP
 207 #undef ROP_OP_16
 208 #undef ROP_OP_32