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)(CirrusVGAState *s,
  26                                           uint32_t dstaddr, uint8_t src)
  27 {
  28     uint8_t *dst = &s->vga.vram_ptr[dstaddr & s->cirrus_addr_mask];
  29     *dst = ROP_FN(*dst, src);
  30 }
  31
  32 static inline void glue(rop_tr_8_, ROP_NAME)(CirrusVGAState *s,
  33                                              uint32_t dstaddr, uint8_t src,
  34                                              uint8_t transp)
  35 {
  36     uint8_t *dst = &s->vga.vram_ptr[dstaddr & s->cirrus_addr_mask];
  37     uint8_t pixel = ROP_FN(*dst, src);
  38     if (pixel != transp) {
  39         *dst = pixel;
  40     }
  41 }
  42
  43 static inline void glue(rop_16_, ROP_NAME)(CirrusVGAState *s,
  44                                            uint32_t dstaddr, uint16_t src)
  45 {
  46     uint16_t *dst = (uint16_t *)
  47         (&s->vga.vram_ptr[dstaddr & s->cirrus_addr_mask & ~1]);
  48     *dst = ROP_FN(*dst, src);
  49 }
  50
  51 static inline void glue(rop_tr_16_, ROP_NAME)(CirrusVGAState *s,
  52                                               uint32_t dstaddr, uint16_t src,
  53                                               uint16_t transp)
  54 {
  55     uint16_t *dst = (uint16_t *)
  56         (&s->vga.vram_ptr[dstaddr & s->cirrus_addr_mask & ~1]);
  57     uint16_t pixel = ROP_FN(*dst, src);
  58     if (pixel != transp) {
  59         *dst = pixel;
  60     }
  61 }
  62
  63 static inline void glue(rop_32_, ROP_NAME)(CirrusVGAState *s,
  64                                            uint32_t dstaddr, uint32_t src)
  65 {
  66     uint32_t *dst = (uint32_t *)
  67         (&s->vga.vram_ptr[dstaddr & s->cirrus_addr_mask & ~3]);
  68     *dst = ROP_FN(*dst, src);
  69 }
  70
  71 #define ROP_OP(st, d, s)           glue(rop_8_, ROP_NAME)(st, d, s)
  72 #define ROP_OP_TR(st, d, s, t)     glue(rop_tr_8_, ROP_NAME)(st, d, s, t)
  73 #define ROP_OP_16(st, d, s)        glue(rop_16_, ROP_NAME)(st, d, s)
  74 #define ROP_OP_TR_16(st, d, s, t)  glue(rop_tr_16_, ROP_NAME)(st, d, s, t)
  75 #define ROP_OP_32(st, d, s)        glue(rop_32_, ROP_NAME)(st, d, s)
  76 #undef ROP_FN
  77
  78 static void
  79 glue(cirrus_bitblt_rop_fwd_, ROP_NAME)(CirrusVGAState *s,
  80                                        uint32_t dstaddr,
  81                                        uint32_t srcaddr,
  82                                        int dstpitch, int srcpitch,
  83                                        int bltwidth, int bltheight)
  84 {
  85     int x,y;
  86     dstpitch -= bltwidth;
  87     srcpitch -= bltwidth;
  88
  89     if (bltheight > 1 && (dstpitch < 0 || srcpitch < 0)) {
  90         return;
  91     }
  92
  93     for (y = 0; y < bltheight; y++) {
  94         for (x = 0; x < bltwidth; x++) {
  95             ROP_OP(s, dstaddr, cirrus_src(s, srcaddr));
  96             dstaddr++;
  97             srcaddr++;
  98         }
  99         dstaddr += dstpitch;
 100         srcaddr += srcpitch;
 101     }
 102 }
 103
 104 static void
 105 glue(cirrus_bitblt_rop_bkwd_, ROP_NAME)(CirrusVGAState *s,
 106                                         uint32_t dstaddr,
 107                                         uint32_t srcaddr,
 108                                         int dstpitch, int srcpitch,
 109                                         int bltwidth, int bltheight)
 110 {
 111     int x,y;
 112     dstpitch += bltwidth;
 113     srcpitch += bltwidth;
 114     for (y = 0; y < bltheight; y++) {
 115         for (x = 0; x < bltwidth; x++) {
 116             ROP_OP(s, dstaddr, cirrus_src(s, srcaddr));
 117             dstaddr--;
 118             srcaddr--;
 119         }
 120         dstaddr += dstpitch;
 121         srcaddr += srcpitch;
 122     }
 123 }
 124
 125 static void
 126 glue(glue(cirrus_bitblt_rop_fwd_transp_, ROP_NAME),_8)(CirrusVGAState *s,
 127                                                        uint32_t dstaddr,
 128                                                        uint32_t srcaddr,
 129                                                        int dstpitch,
 130                                                        int srcpitch,
 131                                                        int bltwidth,
 132                                                        int bltheight)
 133 {
 134     int x,y;
 135     uint8_t transp = s->vga.gr[0x34];
 136     dstpitch -= bltwidth;
 137     srcpitch -= bltwidth;
 138
 139     if (bltheight > 1 && (dstpitch < 0 || srcpitch < 0)) {
 140         return;
 141     }
 142
 143     for (y = 0; y < bltheight; y++) {
 144         for (x = 0; x < bltwidth; x++) {
 145             ROP_OP_TR(s, dstaddr, cirrus_src(s, srcaddr), transp);
 146             dstaddr++;
 147             srcaddr++;
 148         }
 149         dstaddr += dstpitch;
 150         srcaddr += srcpitch;
 151     }
 152 }
 153
 154 static void
 155 glue(glue(cirrus_bitblt_rop_bkwd_transp_, ROP_NAME),_8)(CirrusVGAState *s,
 156                                                         uint32_t dstaddr,
 157                                                         uint32_t srcaddr,
 158                                                         int dstpitch,
 159                                                         int srcpitch,
 160                                                         int bltwidth,
 161                                                         int bltheight)
 162 {
 163     int x,y;
 164     uint8_t transp = s->vga.gr[0x34];
 165     dstpitch += bltwidth;
 166     srcpitch += bltwidth;
 167     for (y = 0; y < bltheight; y++) {
 168         for (x = 0; x < bltwidth; x++) {
 169             ROP_OP_TR(s, dstaddr, cirrus_src(s, srcaddr), transp);
 170             dstaddr--;
 171             srcaddr--;
 172         }
 173         dstaddr += dstpitch;
 174         srcaddr += srcpitch;
 175     }
 176 }
 177
 178 static void
 179 glue(glue(cirrus_bitblt_rop_fwd_transp_, ROP_NAME),_16)(CirrusVGAState *s,
 180                                                         uint32_t dstaddr,
 181                                                         uint32_t srcaddr,
 182                                                         int dstpitch,
 183                                                         int srcpitch,
 184                                                         int bltwidth,
 185                                                         int bltheight)
 186 {
 187     int x,y;
 188     uint16_t transp = s->vga.gr[0x34] | (uint16_t)s->vga.gr[0x35] << 8;
 189     dstpitch -= bltwidth;
 190     srcpitch -= bltwidth;
 191
 192     if (bltheight > 1 && (dstpitch < 0 || srcpitch < 0)) {
 193         return;
 194     }
 195
 196     for (y = 0; y < bltheight; y++) {
 197         for (x = 0; x < bltwidth; x+=2) {
 198             ROP_OP_TR_16(s, dstaddr, cirrus_src16(s, srcaddr), transp);
 199             dstaddr += 2;
 200             srcaddr += 2;
 201         }
 202         dstaddr += dstpitch;
 203         srcaddr += srcpitch;
 204     }
 205 }
 206
 207 static void
 208 glue(glue(cirrus_bitblt_rop_bkwd_transp_, ROP_NAME),_16)(CirrusVGAState *s,
 209                                                          uint32_t dstaddr,
 210                                                          uint32_t srcaddr,
 211                                                          int dstpitch,
 212                                                          int srcpitch,
 213                                                          int bltwidth,
 214                                                          int bltheight)
 215 {
 216     int x,y;
 217     uint16_t transp = s->vga.gr[0x34] | (uint16_t)s->vga.gr[0x35] << 8;
 218     dstpitch += bltwidth;
 219     srcpitch += bltwidth;
 220     for (y = 0; y < bltheight; y++) {
 221         for (x = 0; x < bltwidth; x+=2) {
 222             ROP_OP_TR_16(s, dstaddr - 1, cirrus_src16(s, srcaddr - 1), transp);
 223             dstaddr -= 2;
 224             srcaddr -= 2;
 225         }
 226         dstaddr += dstpitch;
 227         srcaddr += srcpitch;
 228     }
 229 }
 230
 231 #define DEPTH 8
 232 #include "cirrus_vga_rop2.h"
 233
 234 #define DEPTH 16
 235 #include "cirrus_vga_rop2.h"
 236
 237 #define DEPTH 24
 238 #include "cirrus_vga_rop2.h"
 239
 240 #define DEPTH 32
 241 #include "cirrus_vga_rop2.h"
 242
 243 #undef ROP_NAME
 244 #undef ROP_OP
 245 #undef ROP_OP_16
 246 #undef ROP_OP_32