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 (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
  71static void
  72glue(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
  91static void
  92glue(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
 114static void
 115glue(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
 137static void
 138glue(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
 165static void
 166glue(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
 209