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[wine/hacks.git] / dlls / winedos / vga.c
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1 /*
2 * VGA hardware emulation
3 *
4 * Copyright 1998 Ove Kåven (with some help from Marcus Meissner)
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include <stdarg.h>
22 #include <string.h>
23
24 #define NONAMELESSUNION
25 #define NONAMELESSSTRUCT
26 #include "windef.h"
27 #include "winbase.h"
28 #include "wingdi.h"
29 #include "winuser.h"
30 #include "wincon.h"
31 #include "dosexe.h"
32 #include "vga.h"
33 #include "ddraw.h"
34 #include "wine/debug.h"
35
36 WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
37
38 static IDirectDraw *lpddraw = NULL;
39 static IDirectDrawSurface *lpddsurf;
40 static IDirectDrawPalette *lpddpal;
41 static DDSURFACEDESC sdesc;
42
43 static BOOL vga_retrace_vertical;
44 static BOOL vga_retrace_horizontal;
45
46 /*
47 * Size and location of VGA controller window to framebuffer.
48 *
49 * Note: We support only single window even though some
50 * controllers support two. This should not be changed unless
51 * there are programs that depend on having two windows.
52 */
53 #define VGA_WINDOW_SIZE (64 * 1024)
54 #define VGA_WINDOW_START ((char *)0xa0000)
55
56 /*
57 * Size and location of CGA controller window to framebuffer.
58 */
59 #define CGA_WINDOW_SIZE (32 * 1024)
60 #define CGA_WINDOW_START ((char *)0xb8000)
61
62 /*
63 * VGA controller memory is emulated using linear framebuffer.
64 * This frambuffer also acts as an interface
65 * between VGA controller emulation and DirectDraw.
66 *
67 * vga_fb_width: Display width in pixels. Can be modified when
68 * display mode is changed.
69 * vga_fb_height: Display height in pixels. Can be modified when
70 * display mode is changed.
71 * vga_fb_depth: Number of bits used to store single pixel color information.
72 * Each pixel uses (vga_fb_depth+7)/8 bytes because
73 * 1-16 color modes are mapped to 256 color mode.
74 * Can be modified when display mode is changed.
75 * vga_fb_pitch: How many bytes to add to pointer in order to move
76 * from one row to another. This is fixed in VGA modes,
77 * but can be modified in SVGA modes.
78 * vga_fb_offset: Offset added to framebuffer start address in order
79 * to find the display origin. Programs use this to do
80 * double buffering and to scroll display. The value can
81 * be modified in VGA and SVGA modes.
82 * vga_fb_size: How many bytes are allocated to framebuffer.
83 * VGA framebuffers are always larger than display size and
84 * SVGA framebuffers may also be.
85 * vga_fb_data: Pointer to framebuffer start.
86 * vga_fb_window: Offset of 64k window 0xa0000 in bytes from framebuffer start.
87 * This value is >= 0, if mode uses linear framebuffer and
88 * -1, if mode uses color planes. This value is fixed
89 * in all modes except 0x13 (256 color VGA) where
90 * 0 means normal mode and -1 means Mode-X (unchained mode).
91 */
92 static int vga_fb_width;
93 static int vga_fb_height;
94 static int vga_fb_depth;
95 static int vga_fb_pitch;
96 static int vga_fb_offset;
97 static int vga_fb_size = 0;
98 static char *vga_fb_data = 0;
99 static int vga_fb_window = 0;
100 static int vga_fb_window_size;
101 static char *vga_fb_window_data;
102 static PALETTEENTRY *vga_fb_palette;
103 static unsigned vga_fb_palette_index;
104 static unsigned vga_fb_palette_size;
105 static BOOL vga_fb_bright;
106 static BOOL vga_fb_enabled;
107
108 /*
109 * VGA text mode data.
110 *
111 * vga_text_attr: Current active attribute.
112 * vga_text_old: Last data sent to console.
113 * This is used to optimize console updates.
114 * vga_text_width: Width of the text display in characters.
115 * vga_text_height: Height of the text display in characters.
116 * vga_text_x: Current cursor X-position. Starts from zero.
117 * vga_text_y: Current cursor Y-position. Starts from zero.
118 * vga_text_console: TRUE if stdout is console,
119 * FALSE if it is regular file.
120 */
121 static BYTE vga_text_attr;
122 static char *vga_text_old = NULL;
123 static BYTE vga_text_width;
124 static BYTE vga_text_height;
125 static BYTE vga_text_x;
126 static BYTE vga_text_y;
127 static BOOL vga_text_console;
128
129 /*
130 * VGA controller ports 0x3c0, 0x3c4, 0x3ce and 0x3d4 are
131 * indexed registers. These ports are used to select VGA controller
132 * subregister that can be written to or read from using ports 0x3c1,
133 * 0x3c5, 0x3cf or 0x3d5. Selected subregister indexes are
134 * stored in variables vga_index_*.
135 *
136 * Port 0x3c0 is special because it is both index and
137 * data-write register. Flip-flop vga_address_3c0 tells whether
138 * the port acts currently as an address register. Reading from port
139 * 0x3da resets the flip-flop to address mode.
140 */
141 static BYTE vga_index_3c0;
142 static BYTE vga_index_3c4;
143 static BYTE vga_index_3ce;
144 static BYTE vga_index_3d4;
145 static BOOL vga_address_3c0 = TRUE;
146
147 /*
148 * List of supported video modes.
149 *
150 * should be expanded to contain most or all information
151 * as required for SVGA VESA mode info block for VESA BIOS subsystem 1 (see _ModeInfoBlock)
152 * this will allow proper support for FIXME items in VGA/VESA mode configuration
153 *
154 * FIXME - verify and define support for VESA modes
155 * FIXME - add # bit planes, # video memory banks, & memory model
156 */
157 static WORD VGA_CurrentMode;
158 static BOOL CGA_ColorComposite = FALSE; /* behave like composite monitor */
159
160 const VGA_MODE VGA_modelist[] =
161 {
162 /* Mode, ModeType, TextCols, TextRows, CharWidth, CharHeight, Width, Height, Depth, Colors, ScreenPages, Supported*/
163 /* VGA modes */
164 {0x0000, TEXT, 40, 25, 9, 16, 360, 400, 0, 16, 8, TRUE}, /* VGA/CGA text mode 0 */
165 {0x0001, TEXT, 40, 25, 9, 16, 360, 400, 0, 16, 8, TRUE}, /* VGA/CGA text mode 1 */
166 {0x0002, TEXT, 80, 25, 9, 16, 360, 400, 0, 16, 8, TRUE}, /* VGA/CGA text mode 2 */
167 {0x0003, TEXT, 80, 25, 9, 16, 360, 400, 0, 16, 8, TRUE}, /* VGA/CGA text mode 3 */
168 {0x0004, GRAPHIC, 40, 25, 8, 8, 320, 200, 2, 4, 1, TRUE}, /* VGA/CGA graphics mode 4 */
169 {0x0005, GRAPHIC, 40, 25, 8, 8, 320, 200, 2, 4, 1, TRUE}, /* VGA/CGA graphics mode 5 */
170 {0x0006, GRAPHIC, 80, 25, 8, 8, 640, 200, 1, 2, 1, TRUE}, /* VGA/CGA graphics mode 6 */
171 {0x0007, TEXT, 80, 25, 9, 16, 720, 400, 0, 0, 8, FALSE}, /* VGA text mode 7 - FIXME bad default address */
172 {0x000d, GRAPHIC, 40, 25, 8, 8, 320, 200, 4, 16, 8, FALSE}, /* VGA graphics mode 13 */
173 {0x000e, GRAPHIC, 80, 25, 8, 8, 640, 200, 4, 16, 4, FALSE}, /* VGA graphics mode 14 */
174 {0x000f, GRAPHIC, 80, 25, 8, 14, 640, 350, 0, 0, 2, FALSE}, /* VGA graphics mode 15 */
175 {0x0010, GRAPHIC, 80, 25, 8, 14, 640, 350, 4, 16, 2, FALSE}, /* VGA graphics mode 16 */
176 {0x0012, GRAPHIC, 80, 30, 8, 16, 640, 480, 1, 2, 1, FALSE}, /* VGA graphics mode 17 */
177 {0x0012, GRAPHIC, 80, 30, 8, 16, 640, 480, 4, 16, 1, FALSE}, /* VGA graphics mode 18 */
178 {0x0013, GRAPHIC, 40, 25, 8, 8, 320, 200, 8, 256, 1, TRUE}, /* VGA graphics mode 19 */
179 /* VESA 7-bit modes */
180 {0x006a, GRAPHIC, 0, 0, 0, 0, 800, 600, 4, 16, 1, TRUE}, /* VESA graphics mode, same as 0x102 */
181 /* VESA 15-bit modes */
182 {0x0100, GRAPHIC, 0, 0, 0, 0, 640, 400, 8, 256, 1, TRUE}, /* VESA graphics mode */
183 {0x0101, GRAPHIC, 0, 0, 0, 0, 640, 480, 8, 256, 1, TRUE}, /* VESA graphics mode */
184 {0x0102, GRAPHIC, 0, 0, 0, 0, 800, 600, 4, 16, 1, TRUE}, /* VESA graphics mode */
185 {0x0103, GRAPHIC, 0, 0, 0, 0, 800, 600, 8, 256, 1, TRUE}, /* VESA graphics mode */
186 {0x0104, GRAPHIC, 0, 0, 0, 0, 1024, 768, 4, 16, 1, TRUE}, /* VESA graphics mode */
187 {0x0105, GRAPHIC, 0, 0, 0, 0, 1024, 768, 8, 256, 1, TRUE}, /* VESA graphics mode */
188 {0x0106, GRAPHIC, 0, 0, 0, 0, 1280, 1024, 4, 16, 1, TRUE}, /* VESA graphics mode */
189 {0x0107, GRAPHIC, 0, 0, 0, 0, 1280, 1024, 8, 256, 1, TRUE}, /* VESA graphics mode */
190 {0x0108, TEXT, 0, 0, 0, 0, 80, 60, 0, 0, 1, TRUE}, /* VESA text mode */
191 {0x0109, TEXT, 0, 0, 0, 0, 132, 25, 0, 0, 1, TRUE}, /* VESA text mode */
192 {0x010a, TEXT, 0, 0, 0, 0, 132, 43, 0, 0, 1, TRUE}, /* VESA text mode */
193 {0x010b, TEXT, 0, 0, 0, 0, 132, 50, 0, 0, 1, TRUE}, /* VESA text mode */
194 {0x010c, TEXT, 0, 0, 0, 0, 132, 60, 0, 0, 1, TRUE}, /* VESA text mode */
195 /* VESA 1.2 modes */
196 {0x010d, GRAPHIC, 0, 0, 0, 0, 320, 200, 15, 0, 1, TRUE}, /* VESA graphics mode, 32K colors */
197 {0x010e, GRAPHIC, 0, 0, 0, 0, 320, 200, 16, 0, 1, TRUE}, /* VESA graphics mode, 64K colors */
198 {0x010f, GRAPHIC, 0, 0, 0, 0, 320, 200, 24, 0, 1, TRUE}, /* VESA graphics mode, 16.8 Million colors */
199 {0x0110, GRAPHIC, 0, 0, 0, 0, 640, 480, 15, 0, 1, TRUE}, /* VESA graphics mode, 32K colors */
200 {0x0111, GRAPHIC, 0, 0, 0, 0, 640, 480, 16, 0, 1, TRUE}, /* VESA graphics mode, 64K colors */
201 {0x0112, GRAPHIC, 0, 0, 0, 0, 640, 480, 24, 0, 1, TRUE}, /* VESA graphics mode, 16.8 Million colors */
202 {0x0113, GRAPHIC, 0, 0, 0, 0, 800, 600, 15, 0, 1, TRUE}, /* VESA graphics mode, 32K colors */
203 {0x0114, GRAPHIC, 0, 0, 0, 0, 800, 600, 16, 0, 1, TRUE}, /* VESA graphics mode, 64K colors */
204 {0x0115, GRAPHIC, 0, 0, 0, 0, 800, 600, 24, 0, 1, TRUE}, /* VESA graphics mode, 16.8 Million colors */
205 {0x0116, GRAPHIC, 0, 0, 0, 0, 1024, 768, 15, 0, 1, TRUE}, /* VESA graphics mode, 32K colors */
206 {0x0117, GRAPHIC, 0, 0, 0, 0, 1024, 768, 16, 0, 1, TRUE}, /* VESA graphics mode, 64K colors */
207 {0x0118, GRAPHIC, 0, 0, 0, 0, 1024, 768, 24, 0, 1, TRUE}, /* VESA graphics mode, 16.8 Million colors */
208 {0x0119, GRAPHIC, 0, 0, 0, 0, 1280, 1024, 15, 0, 1, TRUE}, /* VESA graphics mode, 32K colors */
209 {0x011a, GRAPHIC, 0, 0, 0, 0, 1280, 1024, 16, 0, 1, TRUE}, /* VESA graphics mode, 64K colors */
210 {0x011b, GRAPHIC, 0, 0, 0, 0, 1280, 1024, 24, 0, 1, TRUE}, /* VESA graphics mode, 16.8 Million colors */
211 {0xffff, TEXT, 0, 0, 0, 0, 0, 0, 0, 0, 1, FALSE}
212 };
213
214 /*
215 * This mutex is used to protect VGA state during asynchronous
216 * screen updates (see VGA_Poll). It makes sure that VGA state changes
217 * are atomic and the user interface is protected from flicker and
218 * corruption.
219 *
220 * The mutex actually serializes VGA operations and the screen update.
221 * Which means that whenever VGA_Poll occurs, application stalls if it
222 * tries to modify VGA state. This is not how real VGA adapters work,
223 * but it makes timing and correctness issues much easier to deal with.
224 */
225 static CRITICAL_SECTION vga_lock;
226 static CRITICAL_SECTION_DEBUG critsect_debug =
227 {
228 0, 0, &vga_lock,
229 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
230 0, 0, { (DWORD_PTR)(__FILE__ ": vga_lock") }
231 };
232 static CRITICAL_SECTION vga_lock = { &critsect_debug, -1, 0, 0, 0, 0 };
233
234 typedef HRESULT (WINAPI *DirectDrawCreateProc)(LPGUID,LPDIRECTDRAW *,LPUNKNOWN);
235 static DirectDrawCreateProc pDirectDrawCreate;
236
237 static void CALLBACK VGA_Poll( LPVOID arg, DWORD low, DWORD high );
238
239 static HWND vga_hwnd = NULL;
240
241 /*
242 * CGA palette 1
243 */
244 static PALETTEENTRY cga_palette1[] = {
245 {0x00, 0x00, 0x00}, /* 0 - Black */
246 {0x00, 0xAA, 0xAA}, /* 1 - Cyan */
247 {0xAA, 0x00, 0xAA}, /* 2 - Magenta */
248 {0xAA, 0xAA, 0xAA} /* 3 - White */
249 };
250
251 /*
252 * CGA palette 1 in the bright variant
253 * intensities, when signalled to do so
254 * in register 0x3d9
255 */
256 static PALETTEENTRY cga_palette1_bright[] = {
257 {0x00, 0x00, 0x00}, /* 0 - Black */
258 {0x55, 0xFF, 0xFF}, /* 1 - Light cyan */
259 {0xFF, 0x55, 0xFF}, /* 2 - Light magenta */
260 {0xFF, 0xFF, 0xFF}, /* 3 - Bright White */
261 };
262
263 /*
264 * CGA palette 2
265 */
266 static PALETTEENTRY cga_palette2[] = {
267 {0x00, 0x00, 0x00}, /* 0 - Black */
268 {0x00, 0xAA, 0x00}, /* 1 - Green */
269 {0xAA, 0x00, 0x00}, /* 2 - Red */
270 {0xAA, 0x55, 0x00} /* 3 - Brown */
271 };
272
273 /*
274 * CGA palette 2 in the bright variant
275 * intensities, when signalled to do so
276 * in register 0x3d9
277 */
278 static PALETTEENTRY cga_palette2_bright[] = {
279 {0x00, 0x00, 0x00}, /* 0 - Black */
280 {0x55, 0xFF, 0x55}, /* 1 - Light green */
281 {0xFF, 0x55, 0x55}, /* 2 - Light red */
282 {0xFF, 0xFF, 0x55}, /* 3 - Yellow */
283 };
284
285 /*
286 * VGA Palette Registers, in actual 16 bit color
287 * port 3C0H - 6 bit rgbRGB format
288 *
289 * 16 color accesses will use these pointers and insert
290 * entries from the 64-color palette (mode 18) into the default
291 * palette. --Robert 'Admiral' Coeyman
292 */
293 static char vga_16_palette[17]={
294 0x00, /* 0 - Black */
295 0x01, /* 1 - Blue */
296 0x02, /* 2 - Green */
297 0x03, /* 3 - Cyan */
298 0x04, /* 4 - Red */
299 0x05, /* 5 - Magenta */
300 0x14, /* 6 - Brown */
301 0x07, /* 7 - White (Light gray) */
302 0x38, /* 8 - Dark gray */
303 0x39, /* 9 - Light blue */
304 0x3a, /* A - Light green */
305 0x3b, /* B - Light cyan */
306 0x3c, /* C - Light red */
307 0x3d, /* D - Light magenta */
308 0x3e, /* E - Yellow */
309 0x3f, /* F - Bright White (White) */
310 0x00 /* Border Color */
311 };
312
313 /*
314 * Mode 19 Default Color Register Setting
315 * DAC palette registers, converted from actual 18 bit color to 24.
316 */
317 static PALETTEENTRY vga_def_palette[256]={
318 /* red green blue */
319 /* 16 colors in IRGB values */
320 {0x00, 0x00, 0x00}, /* 0 (0) - Black */
321 {0x00, 0x00, 0xAA}, /* 1 (1) - Blue */
322 {0x00, 0xAA, 0x00}, /* 2 (2) - Green */
323 {0x00, 0xAA, 0xAA}, /* 3 (3) - Cyan */
324 {0xAA, 0x00, 0x00}, /* 4 (4) - Red */
325 {0xAA, 0x00, 0xAA}, /* 5 (5) - Magenta */
326 {0xAA, 0x55, 0x00}, /* 6 (6) - Brown */
327 {0xAA, 0xAA, 0xAA}, /* 7 (7) - White (Light gray) */
328 {0x55, 0x55, 0x55}, /* 8 (8) - Dark gray */
329 {0x55, 0x55, 0xFF}, /* 9 (9) - Light blue */
330 {0x55, 0xFF, 0x55}, /* 10 (A) - Light green */
331 {0x55, 0xFF, 0xFF}, /* 11 (B) - Light cyan */
332 {0xFF, 0x55, 0x55}, /* 12 (C) - Light red */
333 {0xFF, 0x55, 0xFF}, /* 13 (D) - Light magenta */
334 {0xFF, 0xFF, 0x55}, /* 14 (E) - Yellow */
335 {0xFF, 0xFF, 0xFF}, /* 15 (F) - Bright White (White) */
336 /* 16 shades of gray */
337 {0x00, 0x00, 0x00}, /* 16 (10) */
338 {0x10, 0x10, 0x10}, /* 17 (11) */
339 {0x20, 0x20, 0x20}, /* 18 (12) */
340 {0x35, 0x35, 0x35}, /* 19 (13) */
341 {0x45, 0x45, 0x45}, /* 20 (14) */
342 {0x55, 0x55, 0x55}, /* 21 (15) */
343 {0x65, 0x65, 0x65}, /* 22 (16) */
344 {0x75, 0x75, 0x75}, /* 23 (17) */
345 {0x8A, 0x8A, 0x8A}, /* 24 (18) */
346 {0x9A, 0x9A, 0x9A}, /* 25 (19) */
347 {0xAA, 0xAA, 0xAA}, /* 26 (1A) */
348 {0xBA, 0xBA, 0xBA}, /* 27 (1B) */
349 {0xCA, 0xCA, 0xCA}, /* 28 (1C) */
350 {0xDF, 0xDF, 0xDF}, /* 29 (1D) */
351 {0xEF, 0xEF, 0xEF}, /* 30 (1E) */
352 {0xFF, 0xFF, 0xFF}, /* 31 (1F) */
353 /* High Intensity group - 72 colors in 1/3 saturation groups (20H-37H high) */
354 {0x00, 0x00, 0xFF}, /* 32 (20) */
355 {0x41, 0x00, 0xFF}, /* 33 (21) */
356 {0x82, 0x00, 0xFF}, /* 34 (22) */
357 {0xBE, 0x00, 0xFF}, /* 35 (23) */
358 {0xFF, 0x00, 0xFF}, /* 36 (24) */
359 {0xFF, 0x00, 0xBE}, /* 37 (25) */
360 {0xFF, 0x00, 0x82}, /* 38 (26) */
361 {0xFF, 0x00, 0x41}, /* 39 (27) */
362 {0xFF, 0x00, 0x00}, /* 40 (28) */
363 {0xFF, 0x41, 0x00}, /* 41 (29) */
364 {0xFF, 0x82, 0x00}, /* 42 (2A) */
365 {0xFF, 0xBE, 0x00}, /* 43 (2B) */
366 {0xFF, 0xFF, 0x00}, /* 44 (2C) */
367 {0xBE, 0xFF, 0x00}, /* 45 (2D) */
368 {0x82, 0xFF, 0x00}, /* 46 (2E) */
369 {0x41, 0xFF, 0x00}, /* 47 (2F) */
370 {0x00, 0xFF, 0x00}, /* 48 (30) */
371 {0x00, 0xFF, 0x41}, /* 49 (31) */
372 {0x00, 0xFF, 0x82}, /* 50 (32) */
373 {0x00, 0xFF, 0xBE}, /* 51 (33) */
374 {0x00, 0xFF, 0xFF}, /* 52 (34) */
375 {0x00, 0xBE, 0xFF}, /* 53 (35) */
376 {0x00, 0x82, 0xFF}, /* 54 (36) */
377 {0x00, 0x41, 0xFF}, /* 55 (37) */
378 /* High Intensity group - 72 colors in 2/3 saturation groups (38H-4FH moderate) */
379 {0x82, 0x82, 0xFF}, /* 56 (38) */
380 {0x9E, 0x82, 0xFF}, /* 57 (39) */
381 {0xBE, 0x82, 0xFF}, /* 58 (3A) */
382 {0xDF, 0x82, 0xFF}, /* 59 (3B) */
383 {0xFF, 0x82, 0xFF}, /* 60 (3C) */
384 {0xFF, 0x82, 0xDF}, /* 61 (3D) */
385 {0xFF, 0x82, 0xBE}, /* 62 (3E) */
386 {0xFF, 0x82, 0x9E}, /* 63 (3F) */
387 {0xFF, 0x82, 0x82}, /* 64 (40) */
388 {0xFF, 0x9E, 0x82}, /* 65 (41) */
389 {0xFF, 0xBE, 0x82}, /* 66 (42) */
390 {0xFF, 0xDF, 0x82}, /* 67 (43) */
391 {0xFF, 0xFF, 0x82}, /* 68 (44) */
392 {0xDF, 0xFF, 0x82}, /* 69 (45) */
393 {0xBE, 0xFF, 0x82}, /* 70 (46) */
394 {0x9E, 0xFF, 0x82}, /* 71 (47) */
395 {0x82, 0xFF, 0x82}, /* 72 (48) */
396 {0x82, 0xFF, 0x9E}, /* 73 (49) */
397 {0x82, 0xFF, 0xBE}, /* 74 (4A) */
398 {0x82, 0xFF, 0xDF}, /* 75 (4B) */
399 {0x82, 0xFF, 0xFF}, /* 76 (4C) */
400 {0x82, 0xDF, 0xFF}, /* 77 (4D) */
401 {0x82, 0xBE, 0xFF}, /* 78 (4E) */
402 {0x82, 0x9E, 0xFF}, /* 79 (4F) */
403 /* High Intensity group - 72 colors in 3/3 saturation groups (50H-67H low) */
404 {0xBA, 0xBA, 0xFF}, /* 80 (50) */
405 {0xCA, 0xBA, 0xFF}, /* 81 (51) */
406 {0xDF, 0xBA, 0xFF}, /* 82 (52) */
407 {0xEF, 0xBA, 0xFF}, /* 83 (53) */
408 {0xFF, 0xBA, 0xFF}, /* 84 (54) */
409 {0xFF, 0xBA, 0xEF}, /* 85 (55) */
410 {0xFF, 0xBA, 0xDF}, /* 86 (56) */
411 {0xFF, 0xBA, 0xCA}, /* 87 (57) */
412 {0xFF, 0xBA, 0xBA}, /* 88 (58) */
413 {0xFF, 0xCA, 0xBA}, /* 89 (59) */
414 {0xFF, 0xDF, 0xBA}, /* 90 (5A) */
415 {0xFF, 0xEF, 0xBA}, /* 91 (5B) */
416 {0xFF, 0xFF, 0xBA}, /* 92 (5C) */
417 {0xEF, 0xFF, 0xBA}, /* 93 (5D) */
418 {0xDF, 0xFF, 0xBA}, /* 94 (5E) */
419 {0xCA, 0xFF, 0xBA}, /* 95 (5F) */
420 {0xBA, 0xFF, 0xBA}, /* 96 (60) */
421 {0xBA, 0xFF, 0xCA}, /* 97 (61) */
422 {0xBA, 0xFF, 0xDF}, /* 98 (62) */
423 {0xBA, 0xFF, 0xEF}, /* 99 (63) */
424 {0xBA, 0xFF, 0xFF}, /* 100 (64) */
425 {0xBA, 0xEF, 0xFF}, /* 101 (65) */
426 {0xBA, 0xDF, 0xFF}, /* 102 (66) */
427 {0xBA, 0xCA, 0xFF}, /* 103 (67) */
428 /* Medium Intensity group - 72 colors in 1/3 saturation groups (68H-7FH high) */
429 {0x00, 0x00, 0x71}, /* 104 (68) */
430 {0x1C, 0x00, 0x71}, /* 105 (69) */
431 {0x39, 0x00, 0x71}, /* 106 (6A) */
432 {0x55, 0x00, 0x71}, /* 107 (6B) */
433 {0x71, 0x00, 0x71}, /* 108 (6C) */
434 {0x71, 0x00, 0x55}, /* 109 (6D) */
435 {0x71, 0x00, 0x39}, /* 110 (6E) */
436 {0x71, 0x00, 0x1C}, /* 111 (6F) */
437 {0x71, 0x00, 0x00}, /* 112 (70) */
438 {0x71, 0x1C, 0x00}, /* 113 (71) */
439 {0x71, 0x39, 0x00}, /* 114 (72) */
440 {0x71, 0x55, 0x00}, /* 115 (73) */
441 {0x71, 0x71, 0x00}, /* 116 (74) */
442 {0x55, 0x71, 0x00}, /* 117 (75) */
443 {0x39, 0x71, 0x00}, /* 118 (76) */
444 {0x1C, 0x71, 0x00}, /* 119 (77) */
445 {0x00, 0x71, 0x00}, /* 120 (78) */
446 {0x00, 0x71, 0x1C}, /* 121 (79) */
447 {0x00, 0x71, 0x39}, /* 122 (7A) */
448 {0x00, 0x71, 0x55}, /* 123 (7B) */
449 {0x00, 0x71, 0x71}, /* 124 (7C) */
450 {0x00, 0x55, 0x71}, /* 125 (7D) */
451 {0x00, 0x39, 0x71}, /* 126 (7E) */
452 {0x00, 0x1C, 0x71}, /* 127 (7F) */
453 /* Medium Intensity group - 72 colors in 2/3 saturation groups (80H-97H moderate) */
454 {0x39, 0x39, 0x71}, /* 128 (80) */
455 {0x45, 0x39, 0x71}, /* 129 (81) */
456 {0x55, 0x39, 0x71}, /* 130 (82) */
457 {0x61, 0x39, 0x71}, /* 131 (83) */
458 {0x71, 0x39, 0x71}, /* 132 (84) */
459 {0x71, 0x39, 0x61}, /* 133 (85) */
460 {0x71, 0x39, 0x55}, /* 134 (86) */
461 {0x71, 0x39, 0x45}, /* 135 (87) */
462 {0x71, 0x39, 0x39}, /* 136 (88) */
463 {0x71, 0x45, 0x39}, /* 137 (89) */
464 {0x71, 0x55, 0x39}, /* 138 (8A) */
465 {0x71, 0x61, 0x39}, /* 139 (8B) */
466 {0x71, 0x71, 0x39}, /* 140 (8C) */
467 {0x61, 0x71, 0x39}, /* 141 (8D) */
468 {0x55, 0x71, 0x39}, /* 142 (8E) */
469 {0x45, 0x71, 0x39}, /* 143 (8F) */
470 {0x39, 0x71, 0x39}, /* 144 (90) */
471 {0x39, 0x71, 0x45}, /* 145 (91) */
472 {0x39, 0x71, 0x55}, /* 146 (92) */
473 {0x39, 0x71, 0x61}, /* 147 (93) */
474 {0x39, 0x71, 0x71}, /* 148 (94) */
475 {0x39, 0x61, 0x71}, /* 149 (95) */
476 {0x39, 0x55, 0x71}, /* 150 (96) */
477 {0x39, 0x45, 0x71}, /* 151 (97) */
478 /* Medium Intensity group - 72 colors in 3/3 saturation groups (98H-AFH low) */
479 {0x51, 0x51, 0x71}, /* 152 (98) */
480 {0x59, 0x51, 0x71}, /* 153 (99) */
481 {0x61, 0x51, 0x71}, /* 154 (9A) */
482 {0x69, 0x51, 0x71}, /* 155 (9B) */
483 {0x71, 0x51, 0x71}, /* 156 (9C) */
484 {0x71, 0x51, 0x69}, /* 157 (9D) */
485 {0x71, 0x51, 0x61}, /* 158 (9E) */
486 {0x71, 0x51, 0x59}, /* 159 (9F) */
487 {0x71, 0x51, 0x51}, /* 160 (A0) */
488 {0x71, 0x59, 0x51}, /* 161 (A1) */
489 {0x71, 0x61, 0x51}, /* 162 (A2) */
490 {0x71, 0x69, 0x51}, /* 163 (A3) */
491 {0x71, 0x71, 0x51}, /* 164 (A4) */
492 {0x69, 0x71, 0x51}, /* 165 (A5) */
493 {0x61, 0x71, 0x51}, /* 166 (A6) */
494 {0x59, 0x71, 0x51}, /* 167 (A7) */
495 {0x51, 0x71, 0x51}, /* 168 (A8) */
496 {0x51, 0x71, 0x59}, /* 169 (A9) */
497 {0x51, 0x71, 0x61}, /* 170 (AA) */
498 {0x51, 0x71, 0x69}, /* 171 (AB) */
499 {0x51, 0x71, 0x71}, /* 172 (AC) */
500 {0x51, 0x69, 0x71}, /* 173 (AD) */
501 {0x51, 0x61, 0x71}, /* 174 (AE) */
502 {0x51, 0x59, 0x71}, /* 175 (AF) */
503 /* Low Intensity group - 72 colors in 1/3 saturation groups (B0H-C7H high) */
504 {0x00, 0x00, 0x41}, /* 176 (B0) */
505 {0x10, 0x00, 0x41}, /* 177 (B1) */
506 {0x20, 0x00, 0x41}, /* 178 (B2) */
507 {0x31, 0x00, 0x41}, /* 179 (B3) */
508 {0x41, 0x00, 0x41}, /* 180 (B4) */
509 {0x41, 0x00, 0x31}, /* 181 (B5) */
510 {0x41, 0x00, 0x20}, /* 182 (B6) */
511 {0x41, 0x00, 0x10}, /* 183 (B7) */
512 {0x41, 0x00, 0x00}, /* 184 (B8) */
513 {0x41, 0x10, 0x00}, /* 185 (B9) */
514 {0x41, 0x20, 0x00}, /* 186 (BA) */
515 {0x41, 0x31, 0x00}, /* 187 (BB) */
516 {0x41, 0x41, 0x00}, /* 188 (BC) */
517 {0x31, 0x41, 0x00}, /* 189 (BD) */
518 {0x20, 0x41, 0x00}, /* 190 (BE) */
519 {0x10, 0x41, 0x00}, /* 191 (BF) */
520 {0x00, 0x41, 0x00}, /* 192 (C0) */
521 {0x00, 0x41, 0x10}, /* 193 (C1) */
522 {0x00, 0x41, 0x20}, /* 194 (C2) */
523 {0x00, 0x41, 0x31}, /* 195 (C3) */
524 {0x00, 0x41, 0x41}, /* 196 (C4) */
525 {0x00, 0x31, 0x41}, /* 197 (C5) */
526 {0x00, 0x20, 0x41}, /* 198 (C6) */
527 {0x00, 0x10, 0x41}, /* 199 (C7) */
528 /* Low Intensity group - 72 colors in 2/3 saturation groups (C8H-DFH moderate) */
529 {0x20, 0x20, 0x41}, /* 200 (C8) */
530 {0x28, 0x20, 0x41}, /* 201 (C9) */
531 {0x31, 0x20, 0x41}, /* 202 (CA) */
532 {0x39, 0x20, 0x41}, /* 203 (CB) */
533 {0x41, 0x20, 0x41}, /* 204 (CC) */
534 {0x41, 0x20, 0x39}, /* 205 (CD) */
535 {0x41, 0x20, 0x31}, /* 206 (CE) */
536 {0x41, 0x20, 0x28}, /* 207 (CF) */
537 {0x41, 0x20, 0x20}, /* 208 (D0) */
538 {0x41, 0x28, 0x20}, /* 209 (D1) */
539 {0x41, 0x31, 0x20}, /* 210 (D2) */
540 {0x41, 0x39, 0x20}, /* 211 (D3) */
541 {0x41, 0x41, 0x20}, /* 212 (D4) */
542 {0x39, 0x41, 0x20}, /* 213 (D5) */
543 {0x31, 0x41, 0x20}, /* 214 (D6) */
544 {0x28, 0x41, 0x20}, /* 215 (D7) */
545 {0x20, 0x41, 0x20}, /* 216 (D8) */
546 {0x20, 0x41, 0x28}, /* 217 (D9) */
547 {0x20, 0x41, 0x31}, /* 218 (DA) */
548 {0x20, 0x41, 0x39}, /* 219 (DB) */
549 {0x20, 0x41, 0x41}, /* 220 (DC) */
550 {0x20, 0x39, 0x41}, /* 221 (DD) */
551 {0x20, 0x31, 0x41}, /* 222 (DE) */
552 {0x20, 0x28, 0x41}, /* 223 (DF) */
553 /* Low Intensity group - 72 colors in 3/3 saturation groups (E0H-F7H low) */
554 {0x2D, 0x2D, 0x41}, /* 223 (E0) */
555 {0x31, 0x2D, 0x41}, /* 224 (E1) */
556 {0x35, 0x2D, 0x41}, /* 225 (E2) */
557 {0x3D, 0x2D, 0x41}, /* 226 (E3) */
558 {0x41, 0x2D, 0x41}, /* 227 (E4) */
559 {0x41, 0x2D, 0x3D}, /* 228 (E5) */
560 {0x41, 0x2D, 0x35}, /* 229 (E6) */
561 {0x41, 0x2D, 0x31}, /* 230 (E7) */
562 {0x41, 0x2D, 0x2D}, /* 231 (E8) */
563 {0x41, 0x31, 0x2D}, /* 232 (E9) */
564 {0x41, 0x35, 0x2D}, /* 233 (EA) */
565 {0x41, 0x3D, 0x2D}, /* 234 (EB) */
566 {0x41, 0x41, 0x2D}, /* 235 (EC) */
567 {0x3D, 0x41, 0x2D}, /* 236 (ED) */
568 {0x35, 0x41, 0x2D}, /* 237 (EE) */
569 {0x31, 0x41, 0x2D}, /* 238 (EF) */
570 {0x2D, 0x41, 0x2D}, /* 239 (F0) */
571 {0x2D, 0x41, 0x31}, /* 240 (F1) */
572 {0x2D, 0x41, 0x35}, /* 241 (F2) */
573 {0x2D, 0x41, 0x3D}, /* 242 (F3) */
574 {0x2D, 0x41, 0x41}, /* 243 (F4) */
575 {0x2D, 0x3D, 0x41}, /* 244 (F5) */
576 {0x2D, 0x35, 0x41}, /* 245 (F6) */
577 {0x2D, 0x31, 0x41}, /* 246 (F7) */
578 /* Fill up remainder of palettes with black */
579 {0,0,0}
580 };
581
582 /*
583 * Mode 18 Default Color Register Setting
584 * DAC palette registers, converted from actual 18 bit color to 24.
585 *
586 * This palette is the dos default, converted from 18 bit color to 24.
587 * It contains only 64 entries of colors--all others are zeros.
588 * --Robert 'Admiral' Coeyman
589 */
590 static PALETTEENTRY vga_def64_palette[256]={
591 /* red green blue */
592 {0x00, 0x00, 0x00}, /* 0x00 Black */
593 {0x00, 0x00, 0xaa}, /* 0x01 Blue */
594 {0x00, 0xaa, 0x00}, /* 0x02 Green */
595 {0x00, 0xaa, 0xaa}, /* 0x03 Cyan */
596 {0xaa, 0x00, 0x00}, /* 0x04 Red */
597 {0xaa, 0x00, 0xaa}, /* 0x05 Magenta */
598 {0xaa, 0xaa, 0x00}, /* 0x06 */
599 {0xaa, 0xaa, 0xaa}, /* 0x07 White (Light Gray) */
600 {0x00, 0x00, 0x55}, /* 0x08 */
601 {0x00, 0x00, 0xff}, /* 0x09 */
602 {0x00, 0xaa, 0x55}, /* 0x0a */
603 {0x00, 0xaa, 0xff}, /* 0x0b */
604 {0xaa, 0x00, 0x55}, /* 0x0c */
605 {0xaa, 0x00, 0xff}, /* 0x0d */
606 {0xaa, 0xaa, 0x55}, /* 0x0e */
607 {0xaa, 0xaa, 0xff}, /* 0x0f */
608 {0x00, 0x55, 0x00}, /* 0x10 */
609 {0x00, 0x55, 0xaa}, /* 0x11 */
610 {0x00, 0xff, 0x00}, /* 0x12 */
611 {0x00, 0xff, 0xaa}, /* 0x13 */
612 {0xaa, 0x55, 0x00}, /* 0x14 Brown */
613 {0xaa, 0x55, 0xaa}, /* 0x15 */
614 {0xaa, 0xff, 0x00}, /* 0x16 */
615 {0xaa, 0xff, 0xaa}, /* 0x17 */
616 {0x00, 0x55, 0x55}, /* 0x18 */
617 {0x00, 0x55, 0xff}, /* 0x19 */
618 {0x00, 0xff, 0x55}, /* 0x1a */
619 {0x00, 0xff, 0xff}, /* 0x1b */
620 {0xaa, 0x55, 0x55}, /* 0x1c */
621 {0xaa, 0x55, 0xff}, /* 0x1d */
622 {0xaa, 0xff, 0x55}, /* 0x1e */
623 {0xaa, 0xff, 0xff}, /* 0x1f */
624 {0x55, 0x00, 0x00}, /* 0x20 */
625 {0x55, 0x00, 0xaa}, /* 0x21 */
626 {0x55, 0xaa, 0x00}, /* 0x22 */
627 {0x55, 0xaa, 0xaa}, /* 0x23 */
628 {0xff, 0x00, 0x00}, /* 0x24 */
629 {0xff, 0x00, 0xaa}, /* 0x25 */
630 {0xff, 0xaa, 0x00}, /* 0x26 */
631 {0xff, 0xaa, 0xaa}, /* 0x27 */
632 {0x55, 0x00, 0x55}, /* 0x28 */
633 {0x55, 0x00, 0xff}, /* 0x29 */
634 {0x55, 0xaa, 0x55}, /* 0x2a */
635 {0x55, 0xaa, 0xff}, /* 0x2b */
636 {0xff, 0x00, 0x55}, /* 0x2c */
637 {0xff, 0x00, 0xff}, /* 0x2d */
638 {0xff, 0xaa, 0x55}, /* 0x2e */
639 {0xff, 0xaa, 0xff}, /* 0x2f */
640 {0x55, 0x55, 0x00}, /* 0x30 */
641 {0x55, 0x55, 0xaa}, /* 0x31 */
642 {0x55, 0xff, 0x00}, /* 0x32 */
643 {0x55, 0xff, 0xaa}, /* 0x33 */
644 {0xff, 0x55, 0x00}, /* 0x34 */
645 {0xff, 0x55, 0xaa}, /* 0x35 */
646 {0xff, 0xff, 0x00}, /* 0x36 */
647 {0xff, 0xff, 0xaa}, /* 0x37 */
648 {0x55, 0x55, 0x55}, /* 0x38 Dark Gray */
649 {0x55, 0x55, 0xff}, /* 0x39 Light Blue */
650 {0x55, 0xff, 0x55}, /* 0x3a Light Green */
651 {0x55, 0xff, 0xff}, /* 0x3b Light Cyan */
652 {0xff, 0x55, 0x55}, /* 0x3c Light Red */
653 {0xff, 0x55, 0xff}, /* 0x3d Light Magenta */
654 {0xff, 0xff, 0x55}, /* 0x3e Yellow */
655 {0xff, 0xff, 0xff}, /* 0x3f White */
656 {0,0,0} /* The next 192 entries are all zeros */
657 };
658
659 static HANDLE VGA_timer;
660 static HANDLE VGA_timer_thread;
661
662 /* set the timer rate; called in the polling thread context */
663 static void CALLBACK set_timer_rate( ULONG_PTR arg )
664 {
665 LARGE_INTEGER when;
666
667 when.u.LowPart = when.u.HighPart = 0;
668 SetWaitableTimer( VGA_timer, &when, arg, VGA_Poll, 0, FALSE );
669 }
670
671 static DWORD CALLBACK VGA_TimerThread( void *dummy )
672 {
673 for (;;) SleepEx( INFINITE, TRUE );
674 return 0;
675 }
676
677 static void VGA_DeinstallTimer(void)
678 {
679 if (VGA_timer_thread)
680 {
681 /*
682 * Make sure the update thread is not holding
683 * system resources when we kill it.
684 *
685 * Now, we only need to worry about update thread
686 * getting terminated while in EnterCriticalSection
687 * or WaitForMultipleObjectsEx.
688 *
689 * FIXME: Is this a problem?
690 */
691 EnterCriticalSection(&vga_lock);
692
693 CancelWaitableTimer( VGA_timer );
694 CloseHandle( VGA_timer );
695 TerminateThread( VGA_timer_thread, 0 );
696 CloseHandle( VGA_timer_thread );
697 VGA_timer_thread = 0;
698
699 LeaveCriticalSection(&vga_lock);
700
701 /*
702 * Synchronize display. This makes sure that
703 * changes to display become visible even if program
704 * terminates before update thread had time to run.
705 */
706 VGA_Poll( 0, 0, 0 );
707 }
708 }
709
710 static void VGA_InstallTimer(unsigned Rate)
711 {
712 if (!VGA_timer_thread)
713 {
714 VGA_timer = CreateWaitableTimerA( NULL, FALSE, NULL );
715 VGA_timer_thread = CreateThread( NULL, 0, VGA_TimerThread, NULL, 0, NULL );
716 }
717 QueueUserAPC( set_timer_rate, VGA_timer_thread, (ULONG_PTR)Rate );
718 }
719
720 static BOOL VGA_IsTimerRunning(void)
721 {
722 return VGA_timer_thread ? TRUE : FALSE;
723 }
724
725 static HANDLE VGA_AlphaConsole(void)
726 {
727 /* this assumes that no Win32 redirection has taken place, but then again,
728 * only 16-bit apps are likely to use this part of Wine... */
729 return GetStdHandle(STD_OUTPUT_HANDLE);
730 }
731
732 static char*VGA_AlphaBuffer(void)
733 {
734 return (char *)0xb8000;
735 }
736
737 /*** GRAPHICS MODE ***/
738
739 typedef struct {
740 unsigned Xres, Yres, Depth;
741 int ret;
742 } ModeSet;
743
744
745 /**********************************************************************
746 * VGA_SyncWindow
747 *
748 * Copy VGA window into framebuffer (if argument is TRUE) or
749 * part of framebuffer into VGA window (if argument is FALSE).
750 */
751 static void VGA_SyncWindow( BOOL target_is_fb )
752 {
753 int size = vga_fb_window_size;
754
755 /* Window does not overlap framebuffer. */
756 if (vga_fb_window >= vga_fb_size)
757 return;
758
759 /* Check if window overlaps framebuffer only partially. */
760 if (vga_fb_size - vga_fb_window < vga_fb_window_size)
761 size = vga_fb_size - vga_fb_window;
762
763 if (target_is_fb)
764 memmove( vga_fb_data + vga_fb_window, vga_fb_window_data, size );
765 else
766 memmove( vga_fb_window_data, vga_fb_data + vga_fb_window, size );
767 }
768
769
770 static void WINAPI VGA_DoExit(ULONG_PTR arg)
771 {
772 VGA_DeinstallTimer();
773 IDirectDrawSurface_SetPalette(lpddsurf,NULL);
774 IDirectDrawSurface_Release(lpddsurf);
775 lpddsurf=NULL;
776 IDirectDrawPalette_Release(lpddpal);
777 lpddpal=NULL;
778 IDirectDraw_Release(lpddraw);
779 lpddraw=NULL;
780 }
781
782 static void WINAPI VGA_DoSetMode(ULONG_PTR arg)
783 {
784 HRESULT res;
785 ModeSet *par = (ModeSet *)arg;
786 par->ret=1;
787
788 if (lpddraw) VGA_DoExit(0);
789 if (!lpddraw) {
790 if (!pDirectDrawCreate)
791 {
792 HMODULE hmod = LoadLibraryA( "ddraw.dll" );
793 if (hmod) pDirectDrawCreate = (DirectDrawCreateProc)GetProcAddress( hmod, "DirectDrawCreate" );
794 if (!pDirectDrawCreate) {
795 ERR("Can't lookup DirectDrawCreate from ddraw.dll.\n");
796 return;
797 }
798 }
799 res = pDirectDrawCreate(NULL,&lpddraw,NULL);
800 if (!lpddraw) {
801 ERR("DirectDraw is not available (res = 0x%x)\n",res);
802 return;
803 }
804 if (!vga_hwnd) {
805 vga_hwnd = CreateWindowExA(0,"STATIC","WINEDOS VGA",
806 WS_POPUP|WS_VISIBLE|SS_NOTIFY,0,0,
807 par->Xres,par->Yres,0,0,0,NULL);
808 if (!vga_hwnd) {
809 ERR("Failed to create user window.\n");
810 IDirectDraw_Release(lpddraw);
811 lpddraw=NULL;
812 return;
813 }
814 }
815 else
816 SetWindowPos(vga_hwnd,0,0,0,par->Xres,par->Yres,SWP_NOMOVE|SWP_NOZORDER);
817
818 res=IDirectDraw_SetCooperativeLevel(lpddraw,vga_hwnd,DDSCL_FULLSCREEN|DDSCL_EXCLUSIVE);
819 if (res != S_OK) {
820 ERR("Could not set cooperative level to exclusive (0x%x)\n",res);
821 }
822
823 res=IDirectDraw_SetDisplayMode(lpddraw,par->Xres,par->Yres,par->Depth);
824 if (res != S_OK) {
825 ERR("DirectDraw does not support requested display mode (%dx%dx%d), res = 0x%x!\n",par->Xres,par->Yres,par->Depth,res);
826 IDirectDraw_Release(lpddraw);
827 lpddraw=NULL;
828 return;
829 }
830
831 res=IDirectDraw_CreatePalette(lpddraw,DDPCAPS_8BIT,NULL,&lpddpal,NULL);
832 if (res != S_OK) {
833 ERR("Could not create palette (res = 0x%x)\n",res);
834 IDirectDraw_Release(lpddraw);
835 lpddraw=NULL;
836 return;
837 }
838
839 res=IDirectDrawPalette_SetEntries(lpddpal,0,0,vga_fb_palette_size,vga_fb_palette);
840 if (res != S_OK) {
841 ERR("Could not set default palette entries (res = 0x%x)\n", res);
842 }
843
844 memset(&sdesc,0,sizeof(sdesc));
845 sdesc.dwSize=sizeof(sdesc);
846 sdesc.dwFlags = DDSD_CAPS;
847 sdesc.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
848 res=IDirectDraw_CreateSurface(lpddraw,&sdesc,&lpddsurf,NULL);
849 if (res != S_OK || !lpddsurf) {
850 ERR("DirectDraw surface is not available\n");
851 IDirectDraw_Release(lpddraw);
852 lpddraw=NULL;
853 return;
854 }
855 IDirectDrawSurface_SetPalette(lpddsurf,lpddpal);
856 vga_retrace_vertical = vga_retrace_horizontal = FALSE;
857 /* poll every 20ms (50fps should provide adequate responsiveness) */
858 VGA_InstallTimer(20);
859 }
860 par->ret=0;
861 return;
862 }
863
864 /**********************************************************************\
865 * VGA_GetModeInfo
866 *
867 * Returns mode information, given mode number
868 \**********************************************************************/
869 const VGA_MODE *VGA_GetModeInfo(WORD mode)
870 {
871 const VGA_MODE *ModeInfo = VGA_modelist;
872
873 /*
874 * Filter out flags.
875 */
876 mode &= 0x17f;
877
878 while (ModeInfo->Mode != 0xffff)
879 {
880 if (ModeInfo->Mode == mode)
881 return ModeInfo;
882 ModeInfo++;
883 }
884 return NULL;
885 }
886
887 static int VGA_SetGraphicMode(WORD mode)
888 {
889 ModeSet par;
890 int newSize;
891
892 /* get info on VGA mode & set appropriately */
893 const VGA_MODE *ModeInfo = VGA_GetModeInfo(VGA_CurrentMode);
894 /* check if we're assuming composite display */
895 if ((mode == 6) && (CGA_ColorComposite))
896 {
897 vga_fb_width = (ModeInfo->Width / 4);
898 vga_fb_height = ModeInfo->Height;
899 vga_fb_depth = (ModeInfo->Depth * 4);
900 }
901 else
902 {
903 vga_fb_width = ModeInfo->Width;
904 vga_fb_height = ModeInfo->Height;
905 vga_fb_depth = ModeInfo->Depth;
906 }
907 vga_fb_offset = 0;
908 vga_fb_pitch = vga_fb_width * ((vga_fb_depth + 7) / 8);
909
910 newSize = vga_fb_width * vga_fb_height * ((vga_fb_depth + 7) / 8);
911 if(newSize < 256 * 1024)
912 newSize = 256 * 1024;
913
914 if(vga_fb_size < newSize) {
915 HeapFree(GetProcessHeap(), 0, vga_fb_data);
916 vga_fb_data = HeapAlloc(GetProcessHeap(), 0, newSize);
917 vga_fb_size = newSize;
918 }
919
920 if(vga_fb_width >= 640 || vga_fb_height >= 480) {
921 par.Xres = vga_fb_width;
922 par.Yres = vga_fb_height;
923 } else {
924 par.Xres = 640;
925 par.Yres = 480;
926 }
927
928 /* Setup window */
929 if(vga_fb_depth >= 8)
930 {
931 vga_fb_window_data = VGA_WINDOW_START;
932 vga_fb_window_size = VGA_WINDOW_SIZE;
933 vga_fb_palette = vga_def_palette;
934 vga_fb_palette_size = 256;
935 }
936 else
937 {
938 vga_fb_window_data = CGA_WINDOW_START;
939 vga_fb_window_size = CGA_WINDOW_SIZE;
940 if(vga_fb_depth == 2)
941 {
942 /* Select default 2 bit CGA palette */
943 vga_fb_palette = cga_palette1;
944 vga_fb_palette_size = 4;
945 }
946 else
947 {
948 /* Top of VGA palette is same as 4 bit CGA palette */
949 vga_fb_palette = vga_def_palette;
950 vga_fb_palette_size = 16;
951 }
952
953 vga_fb_palette_index = 0;
954 vga_fb_bright = 0;
955 }
956
957 /* Clean the HW buffer */
958 memset(vga_fb_window_data, 0x00, vga_fb_window_size);
959
960 /* Reset window start */
961 VGA_SetWindowStart(0);
962
963 par.Depth = (vga_fb_depth < 8) ? 8 : vga_fb_depth;
964
965 MZ_RunInThread(VGA_DoSetMode, (ULONG_PTR)&par);
966 return par.ret;
967 }
968
969 int VGA_SetMode(WORD mode)
970 {
971 const VGA_MODE *ModeInfo;
972 /* get info on VGA mode & set appropriately */
973 VGA_CurrentMode = mode;
974 ModeInfo = VGA_GetModeInfo(VGA_CurrentMode);
975
976 /* check if mode is supported */
977 if (ModeInfo->Supported)
978 {
979 FIXME("Setting VGA mode %i - Supported mode - Improve reporting of missing capabilities for modes & modetypes.\n", mode);
980 }
981 else
982 {
983 FIXME("Setting VGA mode %i - Unsupported mode - Will doubtfully work at all, but we'll try anyways.\n", mode);
984 }
985
986 /* set up graphic or text display */
987 if (ModeInfo->ModeType == TEXT)
988 {
989 VGA_SetAlphaMode(ModeInfo->TextCols, ModeInfo->TextRows);
990 }
991 else
992 {
993 return VGA_SetGraphicMode(mode);
994 }
995 return 0; /* assume all good & return zero */
996 }
997
998 int VGA_GetMode(unsigned*Height,unsigned*Width,unsigned*Depth)
999 {
1000 if (!lpddraw) return 1;
1001 if (!lpddsurf) return 1;
1002 if (Height) *Height=sdesc.dwHeight;
1003 if (Width) *Width=sdesc.dwWidth;
1004 if (Depth) *Depth=sdesc.ddpfPixelFormat.u1.dwRGBBitCount;
1005 return 0;
1006 }
1007
1008 static void VGA_Exit(void)
1009 {
1010 if (lpddraw) MZ_RunInThread(VGA_DoExit, 0);
1011 }
1012
1013 void VGA_SetPalette(PALETTEENTRY*pal,int start,int len)
1014 {
1015 if (!lpddraw) return;
1016 IDirectDrawPalette_SetEntries(lpddpal,0,start,len,pal);
1017 }
1018
1019 /* set a single [char wide] color in 16 color mode. */
1020 void VGA_SetColor16(int reg,int color)
1021 {
1022 PALETTEENTRY *pal;
1023
1024 if (!lpddraw) return;
1025 pal= &vga_def64_palette[color];
1026 IDirectDrawPalette_SetEntries(lpddpal,0,reg,1,pal);
1027 vga_16_palette[reg]=(char)color;
1028 }
1029
1030 /* Get a single [char wide] color in 16 color mode. */
1031 char VGA_GetColor16(int reg)
1032 {
1033
1034 if (!lpddraw) return 0;
1035 return vga_16_palette[reg];
1036 }
1037
1038 /* set all 17 [char wide] colors at once in 16 color mode. */
1039 void VGA_Set16Palette(char *Table)
1040 {
1041 PALETTEENTRY *pal;
1042 int c;
1043
1044 if (!lpddraw) return; /* return if we're in text only mode */
1045 memcpy( Table, vga_16_palette, 17 ); /* copy the entries into the table */
1046
1047 for (c=0; c<17; c++) { /* 17 entries */
1048 pal= &vga_def64_palette[(int)vga_16_palette[c]]; /* get color */
1049 IDirectDrawPalette_SetEntries(lpddpal,0,c,1,pal); /* set entry */
1050 TRACE("Palette register %d set to %d\n",c,(int)vga_16_palette[c]);
1051 } /* end of the counting loop */
1052 }
1053
1054 /* Get all 17 [ char wide ] colors at once in 16 color mode. */
1055 void VGA_Get16Palette(char *Table)
1056 {
1057
1058 if (!lpddraw) return; /* return if we're in text only mode */
1059 memcpy( vga_16_palette, Table, 17 ); /* copy the entries into the table */
1060 }
1061
1062 static LPSTR VGA_Lock(unsigned*Pitch,unsigned*Height,unsigned*Width,unsigned*Depth)
1063 {
1064 if (!lpddraw) return NULL;
1065 if (!lpddsurf) return NULL;
1066 if (IDirectDrawSurface_Lock(lpddsurf,NULL,&sdesc,0,0) != S_OK) {
1067 ERR("could not lock surface!\n");
1068 return NULL;
1069 }
1070 if (Pitch) *Pitch=sdesc.u1.lPitch;
1071 if (Height) *Height=sdesc.dwHeight;
1072 if (Width) *Width=sdesc.dwWidth;
1073 if (Depth) *Depth=sdesc.ddpfPixelFormat.u1.dwRGBBitCount;
1074 return sdesc.lpSurface;
1075 }
1076
1077 static void VGA_Unlock(void)
1078 {
1079 IDirectDrawSurface_Unlock(lpddsurf,sdesc.lpSurface);
1080 }
1081
1082 /*
1083 * Set start of 64k window at 0xa0000 in bytes.
1084 * If value is -1, initialize color plane support.
1085 * If value is >= 0, window contains direct copy of framebuffer.
1086 */
1087 void VGA_SetWindowStart(int start)
1088 {
1089 if(start == vga_fb_window)
1090 return;
1091
1092 EnterCriticalSection(&vga_lock);
1093
1094 if(vga_fb_window == -1)
1095 FIXME("Remove VGA memory emulation.\n");
1096 else
1097 VGA_SyncWindow( TRUE );
1098
1099 vga_fb_window = start;
1100
1101 if(vga_fb_window == -1)
1102 FIXME("Install VGA memory emulation.\n");
1103 else
1104 VGA_SyncWindow( FALSE );
1105
1106 LeaveCriticalSection(&vga_lock);
1107 }
1108
1109 /*
1110 * Get start of 64k window at 0xa0000 in bytes.
1111 * Value is -1 in color plane modes.
1112 */
1113 int VGA_GetWindowStart(void)
1114 {
1115 return vga_fb_window;
1116 }
1117
1118
1119 /**********************************************************************
1120 * VGA_DoShowMouse
1121 *
1122 * Callback for VGA_ShowMouse.
1123 */
1124 static void WINAPI VGA_DoShowMouse( ULONG_PTR show )
1125 {
1126 INT rv;
1127
1128 do
1129 {
1130 rv = ShowCursor( show );
1131 }
1132 while( show ? (rv < 0) : (rv >= 0) );
1133 }
1134
1135
1136 /**********************************************************************
1137 * VGA_ShowMouse
1138 *
1139 * If argument is TRUE, unconditionally show mouse cursor.
1140 * If argument is FALSE, unconditionally hide mouse cursor.
1141 * This only works in graphics mode.
1142 */
1143 void VGA_ShowMouse( BOOL show )
1144 {
1145 if (lpddraw)
1146 MZ_RunInThread( VGA_DoShowMouse, (ULONG_PTR)show );
1147 }
1148
1149
1150 /**********************************************************************
1151 * VGA_UpdatePalette
1152 *
1153 * Update the current palette
1154 *
1155 * Note: When updating the current CGA palette, palette index 0
1156 * refers to palette2, and index 1 is palette1 (default palette)
1157 */
1158 void VGA_UpdatePalette(void)
1159 {
1160 /* Figure out which palette is used now */
1161 if(vga_fb_bright == TRUE)
1162 {
1163 if(vga_fb_palette_index == 0)
1164 {
1165 vga_fb_palette = cga_palette2_bright;
1166 }
1167 else if(vga_fb_palette_index == 1)
1168 {
1169 vga_fb_palette = cga_palette1_bright;
1170 }
1171 }
1172 else
1173 {
1174 if(vga_fb_palette_index == 0)
1175 {
1176 vga_fb_palette = cga_palette2;
1177 }
1178 else if(vga_fb_palette_index == 1)
1179 {
1180 vga_fb_palette = cga_palette1;
1181 }
1182 }
1183
1184 /* Now update the palette */
1185 VGA_SetPalette(vga_fb_palette,0,4);
1186 }
1187
1188 /**********************************************************************
1189 * VGA_SetBright
1190 *
1191 * Select if using a "bright" palette or not.
1192 * This is a property of the CGA controller
1193 */
1194 void VGA_SetBright(BOOL bright)
1195 {
1196 TRACE("%i\n", bright);
1197
1198 /* Remember the "bright" value used by the CGA controller */
1199 vga_fb_bright = bright;
1200 }
1201
1202 /**********************************************************************
1203 * VGA_SetEnabled
1204 *
1205 * Select if output is enabled or disabled
1206 * This is a property of the CGA controller
1207 */
1208 static void VGA_SetEnabled(BOOL enabled)
1209 {
1210 TRACE("%i\n", enabled);
1211
1212 /* Check if going from enabled to disabled */
1213 if(vga_fb_enabled == TRUE && enabled == FALSE)
1214 {
1215 /* Clear frame buffer */
1216 memset(vga_fb_window_data, 0x00, vga_fb_window_size);
1217 }
1218
1219 /* Remember the "enabled" value */
1220 vga_fb_enabled = enabled;
1221 }
1222
1223 /**********************************************************************
1224 * VGA_SetPaletteIndex
1225 *
1226 * Select the index of the palette which is currently in use
1227 * This is a property of the CGA controller
1228 */
1229 void VGA_SetPaletteIndex(unsigned index)
1230 {
1231 TRACE("%i\n", index);
1232
1233 /* Remember the palette index, which is only used by CGA for now */
1234 vga_fb_palette_index = index;
1235 }
1236
1237 /**********************************************************************
1238 * VGA_WritePixel
1239 *
1240 * Write data to the framebuffer
1241 * This is a property of the CGA controller, but might be supported
1242 * later by other framebuffer types
1243 */
1244 void VGA_WritePixel(unsigned color, unsigned page, unsigned col, unsigned row)
1245 {
1246 int off;
1247 int bits;
1248 int pos;
1249
1250 /* Calculate CGA byte offset */
1251 char *data = vga_fb_window_data;
1252 off = row & 1 ? (8 * 1024) : 0;
1253 off += (80 * (row/2));
1254 off += col/4;
1255
1256 /* Calculate bits offset */
1257 pos = 6 - (col%4 * 2);
1258
1259 /* Clear current data */
1260 bits = 0x03 << pos;
1261 data[off] &= ~bits;
1262
1263 /* Set new data */
1264 bits = color << pos;
1265 data[off] |= bits;
1266 }
1267
1268 /*** TEXT MODE ***/
1269
1270 /* prepare the text mode video memory copy that is used to only
1271 * update the video memory line that did get updated. */
1272 static void VGA_PrepareVideoMemCopy(unsigned Xres, unsigned Yres)
1273 {
1274 char *p, *p2;
1275 unsigned int i;
1276
1277 /*
1278 * Allocate space for char + attr.
1279 */
1280
1281 if (vga_text_old)
1282 vga_text_old = HeapReAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY,
1283 vga_text_old, Xres * Yres * 2 );
1284 else
1285 vga_text_old = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY,
1286 Xres * Yres * 2 );
1287 p = VGA_AlphaBuffer();
1288 p2 = vga_text_old;
1289
1290 /* make sure the video mem copy contains the exact opposite of our
1291 * actual text mode memory area to make sure the screen
1292 * does get updated fully initially */
1293 for (i=0; i < Xres*Yres*2; i++)
1294 *p2++ = *p++ ^ 0xff; /* XOR it */
1295 }
1296
1297 /**********************************************************************
1298 * VGA_SetAlphaMode
1299 *
1300 * Set VGA emulation to text mode.
1301 */
1302 void VGA_SetAlphaMode(unsigned Xres,unsigned Yres)
1303 {
1304 VGA_Exit();
1305 VGA_DeinstallTimer();
1306
1307 VGA_PrepareVideoMemCopy(Xres, Yres);
1308 vga_text_width = Xres;
1309 vga_text_height = Yres;
1310
1311 if (vga_text_x >= vga_text_width || vga_text_y >= vga_text_height)
1312 VGA_SetCursorPos(0,0);
1313
1314 if(vga_text_console) {
1315 COORD size;
1316 size.X = Xres;
1317 size.Y = Yres;
1318 SetConsoleScreenBufferSize( VGA_AlphaConsole(), size );
1319
1320 /* poll every 30ms (33fps should provide adequate responsiveness) */
1321 VGA_InstallTimer(30);
1322 }
1323 }
1324
1325 /**********************************************************************
1326 * VGA_InitAlphaMode
1327 *
1328 * Initialize VGA text mode handling and return default text mode.
1329 * This function does not set VGA emulation to text mode.
1330 */
1331 void VGA_InitAlphaMode(unsigned*Xres,unsigned*Yres)
1332 {
1333 CONSOLE_SCREEN_BUFFER_INFO info;
1334
1335 if(GetConsoleScreenBufferInfo( VGA_AlphaConsole(), &info ))
1336 {
1337 vga_text_console = TRUE;
1338 vga_text_x = info.dwCursorPosition.X;
1339 vga_text_y = info.dwCursorPosition.Y;
1340 vga_text_attr = info.wAttributes;
1341 *Xres = info.dwSize.X;
1342 *Yres = info.dwSize.Y;
1343 }
1344 else
1345 {
1346 vga_text_console = FALSE;
1347 vga_text_x = 0;
1348 vga_text_y = 0;
1349 vga_text_attr = 0x0f;
1350 *Xres = 80;
1351 *Yres = 25;
1352 }
1353 }
1354
1355 /**********************************************************************
1356 * VGA_GetAlphaMode
1357 *
1358 * Get current text mode. Returns TRUE and sets resolution if
1359 * any VGA text mode has been initialized.
1360 */
1361 BOOL VGA_GetAlphaMode(unsigned*Xres,unsigned*Yres)
1362 {
1363 if (vga_text_width != 0 && vga_text_height != 0) {
1364 *Xres = vga_text_width;
1365 *Yres = vga_text_height;
1366 return TRUE;
1367 } else
1368 return FALSE;
1369 }
1370
1371 void VGA_SetCursorShape(unsigned char start_options, unsigned char end)
1372 {
1373 CONSOLE_CURSOR_INFO cci;
1374
1375 /* standard cursor settings:
1376 * 0x0607 == CGA, 0x0b0c == monochrome, 0x0d0e == EGA/VGA */
1377
1378 /* calculate percentage from bottom - assuming VGA (bottom 0x0e) */
1379 cci.dwSize = ((end & 0x1f) - (start_options & 0x1f))/0x0e * 100;
1380 if (!cci.dwSize) cci.dwSize++; /* NULL cursor would make SCCI() fail ! */
1381 cci.bVisible = ((start_options & 0x60) != 0x20); /* invisible ? */
1382
1383 SetConsoleCursorInfo(VGA_AlphaConsole(),&cci);
1384 }
1385
1386 void VGA_SetCursorPos(unsigned X,unsigned Y)
1387 {
1388 vga_text_x = X;
1389 vga_text_y = Y;
1390 }
1391
1392 void VGA_GetCursorPos(unsigned*X,unsigned*Y)
1393 {
1394 if (X) *X = vga_text_x;
1395 if (Y) *Y = vga_text_y;
1396 }
1397
1398 static void VGA_PutCharAt(unsigned x, unsigned y, BYTE ascii, int attr)
1399 {
1400 const VGA_MODE *ModeInfo = VGA_GetModeInfo(VGA_CurrentMode);
1401 if ( ModeInfo->ModeType == TEXT )
1402 {
1403 char *dat = VGA_AlphaBuffer() + ((vga_text_width * y + x) * 2);
1404 dat[0] = ascii;
1405 if (attr>=0)
1406 dat[1] = attr;
1407 }
1408 else
1409 {
1410 FIXME("Write %c at (%i,%i) - not yet supported in graphic modes.\n", (char)ascii, x, y);
1411 }
1412 }
1413
1414 void VGA_WriteChars(unsigned X,unsigned Y,unsigned ch,int attr,int count)
1415 {
1416 EnterCriticalSection(&vga_lock);
1417
1418 while (count--)
1419 VGA_PutCharAt(X + count, Y, ch, attr);
1420
1421 LeaveCriticalSection(&vga_lock);
1422 }
1423
1424 void VGA_PutChar(BYTE ascii)
1425 {
1426 DWORD w;
1427
1428 EnterCriticalSection(&vga_lock);
1429
1430 switch(ascii) {
1431 case '\b':
1432 if (vga_text_x)
1433 {
1434 vga_text_x--;
1435 VGA_PutCharAt(vga_text_x, vga_text_y, ' ', 0);
1436 }
1437 break;
1438
1439 case '\t':
1440 vga_text_x += ((vga_text_x + 8) & ~7) - vga_text_x;
1441 break;
1442
1443 case '\n':
1444 vga_text_y++;
1445 vga_text_x = 0;
1446 break;
1447
1448 case '\a':
1449 break;
1450
1451 case '\r':
1452 vga_text_x = 0;
1453 break;
1454
1455 default:
1456 VGA_PutCharAt(vga_text_x, vga_text_y, ascii, vga_text_attr);
1457 vga_text_x++;
1458 }
1459
1460 if (vga_text_x >= vga_text_width)
1461 {
1462 vga_text_x = 0;
1463 vga_text_y++;
1464 }
1465
1466 if (vga_text_y >= vga_text_height)
1467 {
1468 vga_text_y = vga_text_height - 1;
1469 VGA_ScrollUpText( 0, 0,
1470 vga_text_height - 1, vga_text_width - 1,
1471 1, vga_text_attr );
1472 }
1473
1474 /*
1475 * If we don't have a console, write directly to standard output.
1476 */
1477 if(!vga_text_console)
1478 WriteFile(VGA_AlphaConsole(), &ascii, 1, &w, NULL);
1479
1480 LeaveCriticalSection(&vga_lock);
1481 }
1482
1483 void VGA_ClearText(unsigned row1, unsigned col1,
1484 unsigned row2, unsigned col2,
1485 BYTE attr)
1486 {
1487 unsigned x, y;
1488
1489 EnterCriticalSection(&vga_lock);
1490
1491 for(y=row1; y<=row2; y++)
1492 for(x=col1; x<=col2; x++)
1493 VGA_PutCharAt(x, y, 0x20, attr);
1494
1495 LeaveCriticalSection(&vga_lock);
1496 }
1497
1498 void VGA_ScrollUpText(unsigned row1, unsigned col1,
1499 unsigned row2, unsigned col2,
1500 unsigned lines, BYTE attr)
1501 {
1502 char *buffer = VGA_AlphaBuffer();
1503 unsigned y;
1504
1505 EnterCriticalSection(&vga_lock);
1506
1507 /*
1508 * Scroll buffer.
1509 */
1510 for (y = row1; y <= row2 - lines; y++)
1511 memmove( buffer + col1 + y * vga_text_width * 2,
1512 buffer + col1 + (y + lines) * vga_text_width * 2,
1513 (col2 - col1 + 1) * 2 );
1514
1515 /*
1516 * Fill exposed lines.
1517 */
1518 for (y = max(row1, row2 - lines + 1); y <= row2; y++)
1519 VGA_WriteChars( col1, y, ' ', attr, col2 - col1 + 1 );
1520
1521 LeaveCriticalSection(&vga_lock);
1522 }
1523
1524 void VGA_ScrollDownText(unsigned row1, unsigned col1,
1525 unsigned row2, unsigned col2,
1526 unsigned lines, BYTE attr)
1527 {
1528 char *buffer = VGA_AlphaBuffer();
1529 unsigned y;
1530
1531 EnterCriticalSection(&vga_lock);
1532
1533 /*
1534 * Scroll buffer.
1535 */
1536 for (y = row2; y >= row1 + lines; y--)
1537 memmove( buffer + col1 + y * vga_text_width * 2,
1538 buffer + col1 + (y - lines) * vga_text_width * 2,
1539 (col2 - col1 + 1) * 2 );
1540
1541 /*
1542 * Fill exposed lines.
1543 */
1544 for (y = row1; y <= min(row1 + lines - 1, row2); y++)
1545 VGA_WriteChars( col1, y, ' ', attr, col2 - col1 + 1 );
1546
1547 LeaveCriticalSection(&vga_lock);
1548 }
1549
1550 void VGA_GetCharacterAtCursor(BYTE *ascii, BYTE *attr)
1551 {
1552 char *dat;
1553
1554 dat = VGA_AlphaBuffer() + ((vga_text_width * vga_text_y + vga_text_x) * 2);
1555
1556 *ascii = dat[0];
1557 *attr = dat[1];
1558 }
1559
1560
1561 /*** CONTROL ***/
1562
1563 /* FIXME: optimize by doing this only if the data has actually changed
1564 * (in a way similar to DIBSection, perhaps) */
1565 static void VGA_Poll_Graphics(void)
1566 {
1567 unsigned int Pitch, Height, Width, X, Y;
1568 char *surf;
1569 char *dat = vga_fb_data + vga_fb_offset;
1570 int bpp = (vga_fb_depth + 7) / 8;
1571
1572 surf = VGA_Lock(&Pitch,&Height,&Width,NULL);
1573 if (!surf) return;
1574
1575 /*
1576 * Synchronize framebuffer contents.
1577 */
1578 if (vga_fb_window != -1)
1579 VGA_SyncWindow( TRUE );
1580
1581 /*
1582 * CGA framebuffer (160x200) - CGA_ColorComposite, special subtype of mode 6
1583 * This buffer is encoded as following:
1584 * - 4 bit pr. pixel, 2 pixels per byte
1585 * - 80 bytes per row
1586 * - Every second line has an offset of 8096
1587 */
1588 if(vga_fb_depth == 4 && vga_fb_width == 160 && vga_fb_height == 200){
1589 WORD off = 0;
1590 BYTE bits = 4;
1591 BYTE value;
1592 for(Y=0; Y<vga_fb_height; Y++, surf+=(Pitch*2)){
1593 for(X=0; X<vga_fb_width; X++){
1594 off = Y & 1 ? (8 * 1024) : 0;
1595 off += (80 * (Y/2));
1596 off += X/2;
1597 value = (dat[off] >> bits) & 0xF;
1598 surf[(X*4)+0] = value;
1599 surf[(X*4)+1] = value;
1600 surf[(X*4)+2] = value;
1601 surf[(X*4)+3] = value;
1602 surf[(X*4)+Pitch+0] = value;
1603 surf[(X*4)+Pitch+1] = value;
1604 surf[(X*4)+Pitch+2] = value;
1605 surf[(X*4)+Pitch+3] = value;
1606 bits -= 4;
1607 bits &= 7;
1608 }
1609 }
1610 }
1611
1612 /*
1613 * CGA framebuffer (320x200)
1614 * This buffer is encoded as following:
1615 * - 2 bits per color, 4 pixels per byte
1616 * - 80 bytes per row
1617 * - Every second line has an offset of 8096
1618 */
1619 else if(vga_fb_depth == 2 && vga_fb_width == 320 && vga_fb_height == 200){
1620 WORD off = 0;
1621 BYTE bits = 6;
1622 BYTE value;
1623 /* Go thru rows */
1624 for(Y=0; Y<vga_fb_height; Y++, surf+=(Pitch*2)){
1625 for(X=0; X<vga_fb_width; X++){
1626 off = Y & 1 ? (8 * 1024) : 0;
1627 off += (80 * (Y/2));
1628 off += X/4;
1629 value = (dat[off] >> bits) & 0x3;
1630 surf[(X*2)] = value;
1631 surf[(X*2)+1] = value;
1632 surf[(X*2)+Pitch] = value;
1633 surf[(X*2)+Pitch+1] = value;
1634 bits -= 2;
1635 bits &= 7;
1636 }
1637 }
1638 }
1639
1640 /*
1641 * Double VGA framebuffer (320x200 -> 640x400), if needed.
1642 */
1643 else if(Height >= 2 * vga_fb_height && Width >= 2 * vga_fb_width && bpp == 1)
1644 for (Y=0; Y<vga_fb_height; Y++,surf+=Pitch*2,dat+=vga_fb_pitch)
1645 for (X=0; X<vga_fb_width; X++) {
1646 BYTE value = dat[X];
1647 surf[X*2] = value;
1648 surf[X*2+1] = value;
1649 surf[X*2+Pitch] = value;
1650 surf[X*2+Pitch+1] = value;
1651 }
1652 /*
1653 * Linear Buffer, including mode 19
1654 */
1655 else
1656 for (Y=0; Y<vga_fb_height; Y++,surf+=Pitch,dat+=vga_fb_pitch)
1657 memcpy(surf, dat, vga_fb_width * bpp);
1658
1659 VGA_Unlock();
1660 }
1661
1662 static void VGA_Poll_Text(void)
1663 {
1664 char *dat, *old, *p_line;
1665 unsigned int X, Y;
1666 CHAR_INFO ch[256]; /* that should suffice for the largest text width */
1667 COORD siz, off;
1668 SMALL_RECT dest;
1669 HANDLE con = VGA_AlphaConsole();
1670 BOOL linechanged = FALSE; /* video memory area differs from stored copy? */
1671
1672 /* Synchronize cursor position. */
1673 off.X = vga_text_x;
1674 off.Y = vga_text_y;
1675 SetConsoleCursorPosition(con,off);
1676
1677 dat = VGA_AlphaBuffer();
1678 old = vga_text_old; /* pointer to stored video mem copy */
1679 siz.X = vga_text_width; siz.Y = 1;
1680 off.X = 0; off.Y = 0;
1681
1682 /* copy from virtual VGA frame buffer to console */
1683 for (Y=0; Y<vga_text_height; Y++) {
1684 linechanged = memcmp(dat, old, vga_text_width*2);
1685 if (linechanged)
1686 {
1687 /*TRACE("line %d changed\n", Y);*/
1688 p_line = dat;
1689 for (X=0; X<vga_text_width; X++) {
1690 ch[X].Char.AsciiChar = *p_line++;
1691 /* WriteConsoleOutputA doesn't like "dead" chars */
1692 if (ch[X].Char.AsciiChar == '\0')
1693 ch[X].Char.AsciiChar = ' ';
1694 ch[X].Attributes = *p_line++;
1695 }
1696 dest.Top=Y; dest.Bottom=Y;
1697 dest.Left=0; dest.Right=vga_text_width+1;
1698 WriteConsoleOutputA(con, ch, siz, off, &dest);
1699 memcpy(old, dat, vga_text_width*2);
1700 }
1701 /* advance to next text line */
1702 dat += vga_text_width*2;
1703 old += vga_text_width*2;
1704 }
1705 }
1706
1707 static void CALLBACK VGA_Poll( LPVOID arg, DWORD low, DWORD high )
1708 {
1709 EnterCriticalSection(&vga_lock);
1710
1711 if (lpddraw)
1712 VGA_Poll_Graphics();
1713 else
1714 VGA_Poll_Text();
1715
1716 /*
1717 * Fake start of retrace.
1718 */
1719 vga_retrace_vertical = TRUE;
1720
1721 LeaveCriticalSection(&vga_lock);
1722 }
1723
1724 static BYTE palreg,palcnt;
1725 static PALETTEENTRY paldat;
1726
1727 void VGA_ioport_out( WORD port, BYTE val )
1728 {
1729 switch (port) {
1730 /* General Register - Feature Control */
1731 case 0x3ba:
1732 FIXME("Unsupported VGA register: general register - feature control 0x%04x (value 0x%02x)\n", port, val);
1733 break;
1734 /* Attribute Controller - Address/Other */
1735 case 0x3c0:
1736 if (vga_address_3c0)
1737 vga_index_3c0 = val;
1738 else
1739 FIXME("Unsupported index, VGA attribute controller register 0x3c0: 0x%02x (value 0x%02x)\n",
1740 vga_index_3c0, val);
1741 vga_address_3c0 = !vga_address_3c0;
1742 break;
1743 /* General Register - Misc output */
1744 case 0x3c2:
1745 FIXME("Unsupported VGA register: general register - misc output 0x%04x (value 0x%02x)\n", port, val);
1746 break;
1747 /* General Register - Video subsystem enable */
1748 case 0x3c3:
1749 FIXME("Unsupported VGA register: general register - video subsystem enable 0x%04x (value 0x%02x)\n", port, val);
1750 break;
1751 /* Sequencer Register - Address */
1752 case 0x3c4:
1753 vga_index_3c4 = val;
1754 break;
1755 /* Sequencer Register - Other */
1756 case 0x3c5:
1757 switch(vga_index_3c4) {
1758 case 0x04: /* Sequencer: Memory Mode Register */
1759 if(vga_fb_depth == 8)
1760 VGA_SetWindowStart((val & 8) ? 0 : -1);
1761 else
1762 FIXME("Memory Mode Register not supported in this mode.\n");
1763 break;
1764 default:
1765 FIXME("Unsupported index, VGA sequencer register 0x3c4: 0x%02x (value 0x%02x)\n",
1766 vga_index_3c4, val);
1767 }
1768 break;
1769 case 0x3c8:
1770 palreg=val; palcnt=0; break;
1771 case 0x3c9:
1772 ((BYTE*)&paldat)[palcnt++]=val << 2;
1773 if (palcnt==3) {
1774 VGA_SetPalette(&paldat,palreg++,1);
1775 palcnt=0;
1776 }
1777 break;
1778 /* Graphics Controller Register - Address */
1779 case 0x3ce:
1780 vga_index_3ce = val;
1781 break;
1782 /* Graphics Controller Register - Other */
1783 case 0x3cf:
1784 FIXME("Unsupported index, VGA graphics controller register - other 0x3ce: 0x%02x (value 0x%02x)\n",
1785 vga_index_3ce, val);
1786 break;
1787 /* CRT Controller Register - Index (MDA) */
1788 case 0x3b4:
1789 /* CRT Controller Register - Index (CGA) */
1790 case 0x3d4:
1791 vga_index_3d4 = val;
1792 break;
1793 /* CRT Controller Register - Other (MDA) */
1794 case 0x3b5:
1795 /* CRT Controller Register - Other (CGA) */
1796 case 0x3d5:
1797 FIXME("Unsupported index, VGA crt controller register 0x3b4/0x3d4: 0x%02x (value 0x%02x)\n",
1798 vga_index_3d4, val);
1799 break;
1800 /* Mode control register - 6845 Motorola (MDA) */
1801 case 0x3b8:
1802 /* Mode control register - 6845 Motorola (CGA) */
1803 case 0x3d8:
1804 /*
1805 * xxxxxxx1 = 80x25 text
1806 * xxxxxxx0 = 40x25 text (default)
1807 * xxxxxx1x = graphics (320x200)
1808 * xxxxxx0x = text
1809 * xxxxx1xx = B/W
1810 * xxxxx0xx = color
1811 * xxxx1xxx = enable video signal
1812 * xxx1xxxx = 640x200 B/W graphics
1813 * xx1xxxxx = blink
1814 */
1815
1816 /* check bits 6 and 7 */
1817 if (val & 0xC0)
1818 {
1819 FIXME("Unsupported value, VGA register 0x3d8: 0x%02x - bits 7 and 6 not supported.\n", val);
1820 }
1821 /* check bits 5 - blink on */
1822 if (val & 0x20)
1823 {
1824 FIXME("Unsupported value, VGA register 0x3d8: 0x%02x (bit 5) - blink is not supported.\n", val);
1825 }
1826 /* Enable Video Signal (bit 3) - Set the enabled bit */
1827 VGA_SetEnabled((val & 0x08) && 1);
1828
1829 /* xxx1x010 - Detect 160x200, 16 color mode (CGA composite) */
1830 if( (val & 0x17) == 0x12 )
1831 {
1832 /* Switch to 160x200x4 composite mode - special case of mode 6 */
1833 CGA_ColorComposite = TRUE;
1834 VGA_SetMode(6);
1835 }
1836 else
1837 {
1838 /* turn off composite colors otherwise, including 320x200 (80x200 16 color) */
1839 CGA_ColorComposite = FALSE;
1840 }
1841
1842 /* xxx0x100 - Detect VGA mode 0 */
1843 if( (val & 0x17) == 0x04 )
1844 {
1845 VGA_SetMode(0);
1846 }
1847 /* xxx0x000 - Detect VGA mode 1 */
1848 else if( (val & 0x17) == 0x00 )
1849 {
1850 VGA_SetMode(1);
1851 }
1852 /* xxx0x101 - Detect VGA mode 2 */
1853 else if( (val & 0x17) == 0x05 )
1854 {
1855 VGA_SetMode(2);
1856 }
1857 /* xxx0x001 - Detect VGA mode 3 */
1858 else if( (val & 0x17) == 0x01 )
1859 {
1860 VGA_SetMode(3);
1861 }
1862 /* xxx0x010 - Detect VGA mode 4 */
1863 else if( (val & 0x17) == 0x02 )
1864 {
1865 VGA_SetMode(4);
1866 }
1867 /* xxx0x110 - Detect VGA mode 5 */
1868 else if( (val & 0x17) == 0x06 )
1869 {
1870 VGA_SetMode(5);
1871 }
1872 /* xxx1x110 - Detect VGA mode 6 */
1873 else if( (val & 0x17) == 0x16 )
1874 {
1875 VGA_SetMode(6);
1876 }
1877 /* unsupported mode */
1878 else
1879 {
1880 FIXME("Unsupported value, VGA register 0x3d8: 0x%02x - unrecognized MDA/CGA mode\n", val); /* Set the enabled bit */
1881 }
1882
1883 break;
1884
1885 /* Colour control register (CGA) */
1886 case 0x3d9:
1887 /* Set bright */
1888 VGA_SetBright((val & 0x10) && 1);
1889
1890 /* Set palette index */
1891 VGA_SetPaletteIndex((val & 0x20) && 1);
1892
1893 /* Now update the palette */
1894 VGA_UpdatePalette();
1895 break;
1896 default:
1897 FIXME("Unsupported VGA register: 0x%04x (value 0x%02x)\n", port, val);
1898 }
1899 }
1900
1901 BYTE VGA_ioport_in( WORD port )
1902 {
1903 BYTE ret;
1904
1905 switch (port) {
1906 /* Attribute Controller - Other */
1907 case 0x3c1:
1908 FIXME("Unsupported index, VGA attribute controller register 0x3c0: 0x%02x\n",
1909 vga_index_3c0);
1910 return 0xff;
1911 /* General Register - Input status 0 */
1912 case 0x3c2:
1913 ret=0xff;
1914 FIXME("Unsupported VGA register: general register - input status 0 0x%04x\n", port);
1915 break;
1916 /* General Register - Video subsystem enable */
1917 case 0x3c3:
1918 ret=0xff;
1919 FIXME("Unsupported VGA register: general register - video subsystem enable 0x%04x\n", port);
1920 break;
1921 /* Sequencer Register - Other */
1922 case 0x3c5:
1923 switch(vga_index_3c4) {
1924 case 0x04: /* Sequencer: Memory Mode Register */
1925 return (VGA_GetWindowStart() == -1) ? 0xf7 : 0xff;
1926 default:
1927 FIXME("Unsupported index, register 0x3c4: 0x%02x\n",
1928 vga_index_3c4);
1929 return 0xff;
1930 }
1931 /* General Register - DAC State */
1932 case 0x3c7:
1933 ret=0xff;
1934 FIXME("Unsupported VGA register: general register - DAC State 0x%04x\n", port);
1935 break;
1936 /* General Register - Feature control */
1937 case 0x3ca:
1938 ret=0xff;
1939 FIXME("Unsupported VGA register: general register - Feature control 0x%04x\n", port);
1940 break;
1941 /* General Register - Misc output */
1942 case 0x3cc:
1943 ret=0xff;
1944 FIXME("Unsupported VGA register: general register - Feature control 0x%04x\n", port);
1945 break;
1946 /* Graphics Controller Register - Other */
1947 case 0x3cf:
1948 FIXME("Unsupported index, register 0x3ce: 0x%02x\n",
1949 vga_index_3ce);
1950 return 0xff;
1951 /* CRT Controller Register - Other (MDA) */
1952 case 0x3b5:
1953 /* CRT Controller Register - Other (CGA) */
1954 case 0x3d5:
1955 FIXME("Unsupported index, VGA crt controller register 0x3b4/0x3d4: 0x%02x\n",
1956 vga_index_3d4);
1957 return 0xff;
1958 /* General Register - Input status 1 (MDA) */
1959 case 0x3ba:
1960 /* General Register - Input status 1 (CGA) */
1961 case 0x3da:
1962 /*
1963 * Read from this register resets register 0x3c0 address flip-flop.
1964 */
1965 vga_address_3c0 = TRUE;
1966
1967 /*
1968 * Read from this register returns following bits:
1969 * xxxx1xxx = Vertical retrace in progress if set.
1970 * xxxxx1xx = Light pen switched on.
1971 * xxxxxx1x = Light pen trigger set.
1972 * xxxxxxx1 = Either vertical or horizontal retrace
1973 * in progress if set.
1974 */
1975 ret = 0;
1976 if (vga_retrace_vertical)
1977 ret |= 9;
1978 if (vga_retrace_horizontal)
1979 ret |= 3;
1980
1981 /*
1982 * If VGA mode has been set, vertical retrace is
1983 * turned on once a frame and cleared after each read.
1984 * This might cause applications that synchronize with
1985 * vertical retrace to actually skip one frame but that
1986 * is probably not a problem.
1987 *
1988 * If no VGA mode has been set, vertical retrace is faked
1989 * by toggling the value after every read.
1990 */
1991 if (VGA_IsTimerRunning())
1992 vga_retrace_vertical = FALSE;
1993 else
1994 vga_retrace_vertical = !vga_retrace_vertical;
1995
1996 /*
1997 * Toggle horizontal retrace.
1998 */
1999 vga_retrace_horizontal = !vga_retrace_horizontal;
2000 break;
2001
2002 default:
2003 ret=0xff;
2004 FIXME("Unsupported VGA register: 0x%04x\n", port);
2005 }
2006 return ret;
2007 }
2008
2009 void VGA_Clean(void)
2010 {
2011 VGA_Exit();
2012 VGA_DeinstallTimer();
2013 }
useful hacks and other patches not (yet) suitable for mainline