aboutsummaryrefslogtreecommitdiff
path: root/hw/cirrus_vga_rop2.h
blob: d28bcc6f2580513cd2c3d1891fa15393b133bc08 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
/*
 * QEMU Cirrus CLGD 54xx VGA Emulator.
 *
 * Copyright (c) 2004 Fabrice Bellard
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#if DEPTH == 8
#define PUTPIXEL()    ROP_OP(&d[0], col)
#elif DEPTH == 16
#define PUTPIXEL()    ROP_OP_16((uint16_t *)&d[0], col)
#elif DEPTH == 24
#define PUTPIXEL()    ROP_OP(&d[0], col);        \
                      ROP_OP(&d[1], (col >> 8)); \
                      ROP_OP(&d[2], (col >> 16))
#elif DEPTH == 32
#define PUTPIXEL()    ROP_OP_32(((uint32_t *)&d[0]), col)
#else
#error unsupported DEPTH
#endif

static void
glue(glue(glue(cirrus_patternfill_, ROP_NAME), _),DEPTH)
     (CirrusVGAState * s, uint8_t * dst,
      const uint8_t * src,
      int dstpitch, int srcpitch,
      int bltwidth, int bltheight)
{
    uint8_t *d;
    int x, y, pattern_y, pattern_pitch, pattern_x;
    unsigned int col;
    const uint8_t *src1;
#if DEPTH == 24
    int skipleft = s->vga.gr[0x2f] & 0x1f;
#else
    int skipleft = (s->vga.gr[0x2f] & 0x07) * (DEPTH / 8);
#endif

#if DEPTH == 8
    pattern_pitch = 8;
#elif DEPTH == 16
    pattern_pitch = 16;
#else
    pattern_pitch = 32;
#endif
    pattern_y = s->cirrus_blt_srcaddr & 7;
    for(y = 0; y < bltheight; y++) {
        pattern_x = skipleft;
        d = dst + skipleft;
        src1 = src + pattern_y * pattern_pitch;
        for (x = skipleft; x < bltwidth; x += (DEPTH / 8)) {
#if DEPTH == 8
            col = src1[pattern_x];
            pattern_x = (pattern_x + 1) & 7;
#elif DEPTH == 16
            col = ((uint16_t *)(src1 + pattern_x))[0];
            pattern_x = (pattern_x + 2) & 15;
#elif DEPTH == 24
            {
                const uint8_t *src2 = src1 + pattern_x * 3;
                col = src2[0] | (src2[1] << 8) | (src2[2] << 16);
                pattern_x = (pattern_x + 1) & 7;
            }
#else
            col = ((uint32_t *)(src1 + pattern_x))[0];
            pattern_x = (pattern_x + 4) & 31;
#endif
            PUTPIXEL();
            d += (DEPTH / 8);
        }
        pattern_y = (pattern_y + 1) & 7;
        dst += dstpitch;
    }
}

/* NOTE: srcpitch is ignored */
static void
glue(glue(glue(cirrus_colorexpand_transp_, ROP_NAME), _),DEPTH)
     (CirrusVGAState * s, uint8_t * dst,
      const uint8_t * src,
      int dstpitch, int srcpitch,
      int bltwidth, int bltheight)
{
    uint8_t *d;
    int x, y;
    unsigned bits, bits_xor;
    unsigned int col;
    unsigned bitmask;
    unsigned index;
#if DEPTH == 24
    int dstskipleft = s->vga.gr[0x2f] & 0x1f;
    int srcskipleft = dstskipleft / 3;
#else
    int srcskipleft = s->vga.gr[0x2f] & 0x07;
    int dstskipleft = srcskipleft * (DEPTH / 8);
#endif

    if (s->cirrus_blt_modeext & CIRRUS_BLTMODEEXT_COLOREXPINV) {
        bits_xor = 0xff;
        col = s->cirrus_blt_bgcol;
    } else {
        bits_xor = 0x00;
        col = s->cirrus_blt_fgcol;
    }

    for(y = 0; y < bltheight; y++) {
        bitmask = 0x80 >> srcskipleft;
        bits = *src++ ^ bits_xor;
        d = dst + dstskipleft;
        for (x = dstskipleft; x < bltwidth; x += (DEPTH / 8)) {
            if ((bitmask & 0xff) == 0) {
                bitmask = 0x80;
                bits = *src++ ^ bits_xor;
            }
            index = (bits & bitmask);
            if (index) {
                PUTPIXEL();
            }
            d += (DEPTH / 8);
            bitmask >>= 1;
        }
        dst += dstpitch;
    }
}

static void
glue(glue(glue(cirrus_colorexpand_, ROP_NAME), _),DEPTH)
     (CirrusVGAState * s, uint8_t * dst,
      const uint8_t * src,
      int dstpitch, int srcpitch,
      int bltwidth, int bltheight)
{
    uint32_t colors[2];
    uint8_t *d;
    int x, y;
    unsigned bits;
    unsigned int col;
    unsigned bitmask;
    int srcskipleft = s->vga.gr[0x2f] & 0x07;
    int dstskipleft = srcskipleft * (DEPTH / 8);

    colors[0] = s->cirrus_blt_bgcol;
    colors[1] = s->cirrus_blt_fgcol;
    for(y = 0; y < bltheight; y++) {
        bitmask = 0x80 >> srcskipleft;
        bits = *src++;
        d = dst + dstskipleft;
        for (x = dstskipleft; x < bltwidth; x += (DEPTH / 8)) {
            if ((bitmask & 0xff) == 0) {
                bitmask = 0x80;
                bits = *src++;
            }
            col = colors[!!(bits & bitmask)];
            PUTPIXEL();
            d += (DEPTH / 8);
            bitmask >>= 1;
        }
        dst += dstpitch;
    }
}

static void
glue(glue(glue(cirrus_colorexpand_pattern_transp_, ROP_NAME), _),DEPTH)
     (CirrusVGAState * s, uint8_t * dst,
      const uint8_t * src,
      int dstpitch, int srcpitch,
      int bltwidth, int bltheight)
{
    uint8_t *d;
    int x, y, bitpos, pattern_y;
    unsigned int bits, bits_xor;
    unsigned int col;
#if DEPTH == 24
    int dstskipleft = s->vga.gr[0x2f] & 0x1f;
    int srcskipleft = dstskipleft / 3;
#else
    int srcskipleft = s->vga.gr[0x2f] & 0x07;
    int dstskipleft = srcskipleft * (DEPTH / 8);
#endif

    if (s->cirrus_blt_modeext & CIRRUS_BLTMODEEXT_COLOREXPINV) {
        bits_xor = 0xff;
        col = s->cirrus_blt_bgcol;
    } else {
        bits_xor = 0x00;
        col = s->cirrus_blt_fgcol;
    }
    pattern_y = s->cirrus_blt_srcaddr & 7;

    for(y = 0; y < bltheight; y++) {
        bits = src[pattern_y] ^ bits_xor;
        bitpos = 7 - srcskipleft;
        d = dst + dstskipleft;
        for (x = dstskipleft; x < bltwidth; x += (DEPTH / 8)) {
            if ((bits >> bitpos) & 1) {
                PUTPIXEL();
            }
            d += (DEPTH / 8);
            bitpos = (bitpos - 1) & 7;
        }
        pattern_y = (pattern_y + 1) & 7;
        dst += dstpitch;
    }
}

static void
glue(glue(glue(cirrus_colorexpand_pattern_, ROP_NAME), _),DEPTH)
     (CirrusVGAState * s, uint8_t * dst,
      const uint8_t * src,
      int dstpitch, int srcpitch,
      int bltwidth, int bltheight)
{
    uint32_t colors[2];
    uint8_t *d;
    int x, y, bitpos, pattern_y;
    unsigned int bits;
    unsigned int col;
    int srcskipleft = s->vga.gr[0x2f] & 0x07;
    int dstskipleft = srcskipleft * (DEPTH / 8);

    colors[0] = s->cirrus_blt_bgcol;
    colors[1] = s->cirrus_blt_fgcol;
    pattern_y = s->cirrus_blt_srcaddr & 7;

    for(y = 0; y < bltheight; y++) {
        bits = src[pattern_y];
        bitpos = 7 - srcskipleft;
        d = dst + dstskipleft;
        for (x = dstskipleft; x < bltwidth; x += (DEPTH / 8)) {
            col = colors[(bits >> bitpos) & 1];
            PUTPIXEL();
            d += (DEPTH / 8);
            bitpos = (bitpos - 1) & 7;
        }
        pattern_y = (pattern_y + 1) & 7;
        dst += dstpitch;
    }
}

static void
glue(glue(glue(cirrus_fill_, ROP_NAME), _),DEPTH)
     (CirrusVGAState *s,
      uint8_t *dst, int dst_pitch,
      int width, int height)
{
    uint8_t *d, *d1;
    uint32_t col;
    int x, y;

    col = s->cirrus_blt_fgcol;

    d1 = dst;
    for(y = 0; y < height; y++) {
        d = d1;
        for(x = 0; x < width; x += (DEPTH / 8)) {
            PUTPIXEL();
            d += (DEPTH / 8);
        }
        d1 += dst_pitch;
    }
}

#undef DEPTH
#undef PUTPIXEL