2 * QEMU VGA Emulator templates
4 * Copyright (c) 2003 Fabrice Bellard
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
25 static inline void vga_draw_glyph_line(uint8_t *d, uint32_t font_data,
26 uint32_t xorcol, uint32_t bgcol)
28 ((uint32_t *)d)[0] = (-((font_data >> 7)) & xorcol) ^ bgcol;
29 ((uint32_t *)d)[1] = (-((font_data >> 6) & 1) & xorcol) ^ bgcol;
30 ((uint32_t *)d)[2] = (-((font_data >> 5) & 1) & xorcol) ^ bgcol;
31 ((uint32_t *)d)[3] = (-((font_data >> 4) & 1) & xorcol) ^ bgcol;
32 ((uint32_t *)d)[4] = (-((font_data >> 3) & 1) & xorcol) ^ bgcol;
33 ((uint32_t *)d)[5] = (-((font_data >> 2) & 1) & xorcol) ^ bgcol;
34 ((uint32_t *)d)[6] = (-((font_data >> 1) & 1) & xorcol) ^ bgcol;
35 ((uint32_t *)d)[7] = (-((font_data >> 0) & 1) & xorcol) ^ bgcol;
38 static void vga_draw_glyph8(uint8_t *d, int linesize,
39 const uint8_t *font_ptr, int h,
40 uint32_t fgcol, uint32_t bgcol)
42 uint32_t font_data, xorcol;
44 xorcol = bgcol ^ fgcol;
46 font_data = font_ptr[0];
47 vga_draw_glyph_line(d, font_data, xorcol, bgcol);
53 static void vga_draw_glyph16(uint8_t *d, int linesize,
54 const uint8_t *font_ptr, int h,
55 uint32_t fgcol, uint32_t bgcol)
57 uint32_t font_data, xorcol;
59 xorcol = bgcol ^ fgcol;
61 font_data = font_ptr[0];
62 vga_draw_glyph_line(d, expand4to8[font_data >> 4],
64 vga_draw_glyph_line(d + 32, expand4to8[font_data & 0x0f],
71 static void vga_draw_glyph9(uint8_t *d, int linesize,
72 const uint8_t *font_ptr, int h,
73 uint32_t fgcol, uint32_t bgcol, int dup9)
75 uint32_t font_data, xorcol, v;
77 xorcol = bgcol ^ fgcol;
79 font_data = font_ptr[0];
80 ((uint32_t *)d)[0] = (-((font_data >> 7)) & xorcol) ^ bgcol;
81 ((uint32_t *)d)[1] = (-((font_data >> 6) & 1) & xorcol) ^ bgcol;
82 ((uint32_t *)d)[2] = (-((font_data >> 5) & 1) & xorcol) ^ bgcol;
83 ((uint32_t *)d)[3] = (-((font_data >> 4) & 1) & xorcol) ^ bgcol;
84 ((uint32_t *)d)[4] = (-((font_data >> 3) & 1) & xorcol) ^ bgcol;
85 ((uint32_t *)d)[5] = (-((font_data >> 2) & 1) & xorcol) ^ bgcol;
86 ((uint32_t *)d)[6] = (-((font_data >> 1) & 1) & xorcol) ^ bgcol;
87 v = (-((font_data >> 0) & 1) & xorcol) ^ bgcol;
88 ((uint32_t *)d)[7] = v;
90 ((uint32_t *)d)[8] = v;
92 ((uint32_t *)d)[8] = bgcol;
101 static void vga_draw_line2(VGACommonState *s1, uint8_t *d,
102 const uint8_t *s, int width)
104 uint32_t plane_mask, *palette, data, v;
107 palette = s1->last_palette;
108 plane_mask = mask16[s1->ar[VGA_ATC_PLANE_ENABLE] & 0xf];
110 for(x = 0; x < width; x++) {
111 data = ((uint32_t *)s)[0];
113 v = expand2[GET_PLANE(data, 0)];
114 v |= expand2[GET_PLANE(data, 2)] << 2;
115 ((uint32_t *)d)[0] = palette[v >> 12];
116 ((uint32_t *)d)[1] = palette[(v >> 8) & 0xf];
117 ((uint32_t *)d)[2] = palette[(v >> 4) & 0xf];
118 ((uint32_t *)d)[3] = palette[(v >> 0) & 0xf];
120 v = expand2[GET_PLANE(data, 1)];
121 v |= expand2[GET_PLANE(data, 3)] << 2;
122 ((uint32_t *)d)[4] = palette[v >> 12];
123 ((uint32_t *)d)[5] = palette[(v >> 8) & 0xf];
124 ((uint32_t *)d)[6] = palette[(v >> 4) & 0xf];
125 ((uint32_t *)d)[7] = palette[(v >> 0) & 0xf];
131 #define PUT_PIXEL2(d, n, v) \
132 ((uint32_t *)d)[2*(n)] = ((uint32_t *)d)[2*(n)+1] = (v)
135 * 4 color mode, dup2 horizontal
137 static void vga_draw_line2d2(VGACommonState *s1, uint8_t *d,
138 const uint8_t *s, int width)
140 uint32_t plane_mask, *palette, data, v;
143 palette = s1->last_palette;
144 plane_mask = mask16[s1->ar[VGA_ATC_PLANE_ENABLE] & 0xf];
146 for(x = 0; x < width; x++) {
147 data = ((uint32_t *)s)[0];
149 v = expand2[GET_PLANE(data, 0)];
150 v |= expand2[GET_PLANE(data, 2)] << 2;
151 PUT_PIXEL2(d, 0, palette[v >> 12]);
152 PUT_PIXEL2(d, 1, palette[(v >> 8) & 0xf]);
153 PUT_PIXEL2(d, 2, palette[(v >> 4) & 0xf]);
154 PUT_PIXEL2(d, 3, palette[(v >> 0) & 0xf]);
156 v = expand2[GET_PLANE(data, 1)];
157 v |= expand2[GET_PLANE(data, 3)] << 2;
158 PUT_PIXEL2(d, 4, palette[v >> 12]);
159 PUT_PIXEL2(d, 5, palette[(v >> 8) & 0xf]);
160 PUT_PIXEL2(d, 6, palette[(v >> 4) & 0xf]);
161 PUT_PIXEL2(d, 7, palette[(v >> 0) & 0xf]);
170 static void vga_draw_line4(VGACommonState *s1, uint8_t *d,
171 const uint8_t *s, int width)
173 uint32_t plane_mask, data, v, *palette;
176 palette = s1->last_palette;
177 plane_mask = mask16[s1->ar[VGA_ATC_PLANE_ENABLE] & 0xf];
179 for(x = 0; x < width; x++) {
180 data = ((uint32_t *)s)[0];
182 v = expand4[GET_PLANE(data, 0)];
183 v |= expand4[GET_PLANE(data, 1)] << 1;
184 v |= expand4[GET_PLANE(data, 2)] << 2;
185 v |= expand4[GET_PLANE(data, 3)] << 3;
186 ((uint32_t *)d)[0] = palette[v >> 28];
187 ((uint32_t *)d)[1] = palette[(v >> 24) & 0xf];
188 ((uint32_t *)d)[2] = palette[(v >> 20) & 0xf];
189 ((uint32_t *)d)[3] = palette[(v >> 16) & 0xf];
190 ((uint32_t *)d)[4] = palette[(v >> 12) & 0xf];
191 ((uint32_t *)d)[5] = palette[(v >> 8) & 0xf];
192 ((uint32_t *)d)[6] = palette[(v >> 4) & 0xf];
193 ((uint32_t *)d)[7] = palette[(v >> 0) & 0xf];
200 * 16 color mode, dup2 horizontal
202 static void vga_draw_line4d2(VGACommonState *s1, uint8_t *d,
203 const uint8_t *s, int width)
205 uint32_t plane_mask, data, v, *palette;
208 palette = s1->last_palette;
209 plane_mask = mask16[s1->ar[VGA_ATC_PLANE_ENABLE] & 0xf];
211 for(x = 0; x < width; x++) {
212 data = ((uint32_t *)s)[0];
214 v = expand4[GET_PLANE(data, 0)];
215 v |= expand4[GET_PLANE(data, 1)] << 1;
216 v |= expand4[GET_PLANE(data, 2)] << 2;
217 v |= expand4[GET_PLANE(data, 3)] << 3;
218 PUT_PIXEL2(d, 0, palette[v >> 28]);
219 PUT_PIXEL2(d, 1, palette[(v >> 24) & 0xf]);
220 PUT_PIXEL2(d, 2, palette[(v >> 20) & 0xf]);
221 PUT_PIXEL2(d, 3, palette[(v >> 16) & 0xf]);
222 PUT_PIXEL2(d, 4, palette[(v >> 12) & 0xf]);
223 PUT_PIXEL2(d, 5, palette[(v >> 8) & 0xf]);
224 PUT_PIXEL2(d, 6, palette[(v >> 4) & 0xf]);
225 PUT_PIXEL2(d, 7, palette[(v >> 0) & 0xf]);
232 * 256 color mode, double pixels
234 * XXX: add plane_mask support (never used in standard VGA modes)
236 static void vga_draw_line8d2(VGACommonState *s1, uint8_t *d,
237 const uint8_t *s, int width)
242 palette = s1->last_palette;
244 for(x = 0; x < width; x++) {
245 PUT_PIXEL2(d, 0, palette[s[0]]);
246 PUT_PIXEL2(d, 1, palette[s[1]]);
247 PUT_PIXEL2(d, 2, palette[s[2]]);
248 PUT_PIXEL2(d, 3, palette[s[3]]);
255 * standard 256 color mode
257 * XXX: add plane_mask support (never used in standard VGA modes)
259 static void vga_draw_line8(VGACommonState *s1, uint8_t *d,
260 const uint8_t *s, int width)
265 palette = s1->last_palette;
267 for(x = 0; x < width; x++) {
268 ((uint32_t *)d)[0] = palette[s[0]];
269 ((uint32_t *)d)[1] = palette[s[1]];
270 ((uint32_t *)d)[2] = palette[s[2]];
271 ((uint32_t *)d)[3] = palette[s[3]];
272 ((uint32_t *)d)[4] = palette[s[4]];
273 ((uint32_t *)d)[5] = palette[s[5]];
274 ((uint32_t *)d)[6] = palette[s[6]];
275 ((uint32_t *)d)[7] = palette[s[7]];
284 static void vga_draw_line15_le(VGACommonState *s1, uint8_t *d,
285 const uint8_t *s, int width)
292 v = lduw_le_p((void *)s);
296 ((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
302 static void vga_draw_line15_be(VGACommonState *s1, uint8_t *d,
303 const uint8_t *s, int width)
310 v = lduw_be_p((void *)s);
314 ((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
323 static void vga_draw_line16_le(VGACommonState *s1, uint8_t *d,
324 const uint8_t *s, int width)
331 v = lduw_le_p((void *)s);
335 ((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
341 static void vga_draw_line16_be(VGACommonState *s1, uint8_t *d,
342 const uint8_t *s, int width)
349 v = lduw_be_p((void *)s);
353 ((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
362 static void vga_draw_line24_le(VGACommonState *s1, uint8_t *d,
363 const uint8_t *s, int width)
373 ((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
379 static void vga_draw_line24_be(VGACommonState *s1, uint8_t *d,
380 const uint8_t *s, int width)
390 ((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
399 static void vga_draw_line32_le(VGACommonState *s1, uint8_t *d,
400 const uint8_t *s, int width)
402 #ifndef HOST_WORDS_BIGENDIAN
403 memcpy(d, s, width * 4);
413 ((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
420 static void vga_draw_line32_be(VGACommonState *s1, uint8_t *d,
421 const uint8_t *s, int width)
423 #ifdef HOST_WORDS_BIGENDIAN
424 memcpy(d, s, width * 4);
434 ((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);