LXR qemu/hw/display/cirrus_vga

   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
  25static inline void glue(rop_8_,ROP_NAME)(uint8_t *dst, uint8_t src)
  26{
  27    *dst = ROP_FN(*dst, src);
  28}
  29
  30static inline void glue(rop_16_,ROP_NAME)(uint16_t *dst, uint16_t src)
  31{
  32    *dst = ROP_FN(*dst, src);
  33}
  34
  35static 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
  45static void
  46glue(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
  70static void
  71glue(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
  90static void
  91glue(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
 113static void
 114glue(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
 136static void
 137glue(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
 164static void
 165glue(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
 208