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 (bltheight > 1 && (dstpitch < 0 || srcpitch < 0)) {
  56         return;
  57     }
  58
  59     for (y = 0; y < bltheight; y++) {
  60         for (x = 0; x < bltwidth; x++) {
  61             ROP_OP(dst, *src);
  62             dst++;
  63             src++;
  64         }
  65         dst += dstpitch;
  66         src += srcpitch;
  67     }
  68 }
  69
  70 static void
  71 glue(cirrus_bitblt_rop_bkwd_, ROP_NAME)(CirrusVGAState *s,
  72                                         uint8_t *dst,const uint8_t *src,
  73                                         int dstpitch,int srcpitch,
  74                                         int bltwidth,int bltheight)
  75 {
  76     int x,y;
  77     dstpitch += bltwidth;
  78     srcpitch += bltwidth;
  79     for (y = 0; y < bltheight; y++) {
  80         for (x = 0; x < bltwidth; x++) {
  81             ROP_OP(dst, *src);
  82             dst--;
  83             src--;
  84         }
  85         dst += dstpitch;
  86         src += srcpitch;
  87     }
  88 }
  89
  90 static void
  91 glue(glue(cirrus_bitblt_rop_fwd_transp_, ROP_NAME),_8)(CirrusVGAState *s,
  92                                                        uint8_t *dst,const uint8_t *src,
  93                                                        int dstpitch,int srcpitch,
  94                                                        int bltwidth,int bltheight)
  95 {
  96     int x,y;
  97     uint8_t p;
  98     dstpitch -= bltwidth;
  99     srcpitch -= bltwidth;
 100     for (y = 0; y < bltheight; y++) {
 101         for (x = 0; x < bltwidth; x++) {
 102             p = *dst;
 103             ROP_OP(&p, *src);
 104             if (p != s->vga.gr[0x34]) *dst = p;
 105             dst++;
 106             src++;
 107         }
 108         dst += dstpitch;
 109         src += srcpitch;
 110     }
 111 }
 112
 113 static void
 114 glue(glue(cirrus_bitblt_rop_bkwd_transp_, ROP_NAME),_8)(CirrusVGAState *s,
 115                                                         uint8_t *dst,const uint8_t *src,
 116                                                         int dstpitch,int srcpitch,
 117                                                         int bltwidth,int bltheight)
 118 {
 119     int x,y;
 120     uint8_t p;
 121     dstpitch += bltwidth;
 122     srcpitch += bltwidth;
 123     for (y = 0; y < bltheight; y++) {
 124         for (x = 0; x < bltwidth; x++) {
 125             p = *dst;
 126             ROP_OP(&p, *src);
 127             if (p != s->vga.gr[0x34]) *dst = p;
 128             dst--;
 129             src--;
 130         }
 131         dst += dstpitch;
 132         src += srcpitch;
 133     }
 134 }
 135
 136 static void
 137 glue(glue(cirrus_bitblt_rop_fwd_transp_, ROP_NAME),_16)(CirrusVGAState *s,
 138                                                         uint8_t *dst,const uint8_t *src,
 139                                                         int dstpitch,int srcpitch,
 140                                                         int bltwidth,int bltheight)
 141 {
 142     int x,y;
 143     uint8_t p1, p2;
 144     dstpitch -= bltwidth;
 145     srcpitch -= bltwidth;
 146     for (y = 0; y < bltheight; y++) {
 147         for (x = 0; x < bltwidth; x+=2) {
 148             p1 = *dst;
 149             p2 = *(dst+1);
 150             ROP_OP(&p1, *src);
 151             ROP_OP(&p2, *(src + 1));
 152             if ((p1 != s->vga.gr[0x34]) || (p2 != s->vga.gr[0x35])) {
 153                 *dst = p1;
 154                 *(dst+1) = p2;
 155             }
 156             dst+=2;
 157             src+=2;
 158         }
 159         dst += dstpitch;
 160         src += srcpitch;
 161     }
 162 }
 163
 164 static void
 165 glue(glue(cirrus_bitblt_rop_bkwd_transp_, ROP_NAME),_16)(CirrusVGAState *s,
 166                                                          uint8_t *dst,const uint8_t *src,
 167                                                          int dstpitch,int srcpitch,
 168                                                          int bltwidth,int bltheight)
 169 {
 170     int x,y;
 171     uint8_t p1, p2;
 172     dstpitch += bltwidth;
 173     srcpitch += bltwidth;
 174     for (y = 0; y < bltheight; y++) {
 175         for (x = 0; x < bltwidth; x+=2) {
 176             p1 = *(dst-1);
 177             p2 = *dst;
 178             ROP_OP(&p1, *(src - 1));
 179             ROP_OP(&p2, *src);
 180             if ((p1 != s->vga.gr[0x34]) || (p2 != s->vga.gr[0x35])) {
 181                 *(dst-1) = p1;
 182                 *dst = p2;
 183             }
 184             dst-=2;
 185             src-=2;
 186         }
 187         dst += dstpitch;
 188         src += srcpitch;
 189     }
 190 }
 191
 192 #define DEPTH 8
 193 #include "cirrus_vga_rop2.h"
 194
 195 #define DEPTH 16
 196 #include "cirrus_vga_rop2.h"
 197
 198 #define DEPTH 24
 199 #include "cirrus_vga_rop2.h"
 200
 201 #define DEPTH 32
 202 #include "cirrus_vga_rop2.h"
 203
 204 #undef ROP_NAME
 205 #undef ROP_OP
 206 #undef ROP_OP_16
 207 #undef ROP_OP_32