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imm32: ImmGetCandidateWindow should not return unset data.
[wine.git] / dlls / krnl386.exe16 / vga.c
blobf1b632e24e4714a652d7d8b2e1a1f93298720b8d
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 {0x0011, 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 static void CALLBACK VGA_Poll( LPVOID arg, DWORD low, DWORD high );
235
236 static HWND vga_hwnd = NULL;
237
238 /*
239 * CGA palette 1
240 */
241 static PALETTEENTRY cga_palette1[] = {
242 {0x00, 0x00, 0x00}, /* 0 - Black */
243 {0x00, 0xAA, 0xAA}, /* 1 - Cyan */
244 {0xAA, 0x00, 0xAA}, /* 2 - Magenta */
245 {0xAA, 0xAA, 0xAA} /* 3 - White */
246 };
247
248 /*
249 * CGA palette 1 in the bright variant
250 * intensities, when signalled to do so
251 * in register 0x3d9
252 */
253 static PALETTEENTRY cga_palette1_bright[] = {
254 {0x00, 0x00, 0x00}, /* 0 - Black */
255 {0x55, 0xFF, 0xFF}, /* 1 - Light cyan */
256 {0xFF, 0x55, 0xFF}, /* 2 - Light magenta */
257 {0xFF, 0xFF, 0xFF}, /* 3 - Bright White */
258 };
259
260 /*
261 * CGA palette 2
262 */
263 static PALETTEENTRY cga_palette2[] = {
264 {0x00, 0x00, 0x00}, /* 0 - Black */
265 {0x00, 0xAA, 0x00}, /* 1 - Green */
266 {0xAA, 0x00, 0x00}, /* 2 - Red */
267 {0xAA, 0x55, 0x00} /* 3 - Brown */
268 };
269
270 /*
271 * CGA palette 2 in the bright variant
272 * intensities, when signalled to do so
273 * in register 0x3d9
274 */
275 static PALETTEENTRY cga_palette2_bright[] = {
276 {0x00, 0x00, 0x00}, /* 0 - Black */
277 {0x55, 0xFF, 0x55}, /* 1 - Light green */
278 {0xFF, 0x55, 0x55}, /* 2 - Light red */
279 {0xFF, 0xFF, 0x55}, /* 3 - Yellow */
280 };
281
282 /*
283 * VGA Palette Registers, in actual 16 bit color
284 * port 3C0H - 6 bit rgbRGB format
285 *
286 * 16 color accesses will use these pointers and insert
287 * entries from the 64-color palette (mode 18) into the default
288 * palette. --Robert 'Admiral' Coeyman
289 */
290 static char vga_16_palette[17]={
291 0x00, /* 0 - Black */
292 0x01, /* 1 - Blue */
293 0x02, /* 2 - Green */
294 0x03, /* 3 - Cyan */
295 0x04, /* 4 - Red */
296 0x05, /* 5 - Magenta */
297 0x14, /* 6 - Brown */
298 0x07, /* 7 - White (Light gray) */
299 0x38, /* 8 - Dark gray */
300 0x39, /* 9 - Light blue */
301 0x3a, /* A - Light green */
302 0x3b, /* B - Light cyan */
303 0x3c, /* C - Light red */
304 0x3d, /* D - Light magenta */
305 0x3e, /* E - Yellow */
306 0x3f, /* F - Bright White (White) */
307 0x00 /* Border Color */
308 };
309
310 /*
311 * Mode 19 Default Color Register Setting
312 * DAC palette registers, converted from actual 18 bit color to 24.
313 */
314 static PALETTEENTRY vga_def_palette[256]={
315 /* red green blue */
316 /* 16 colors in IRGB values */
317 {0x00, 0x00, 0x00}, /* 0 (0) - Black */
318 {0x00, 0x00, 0xAA}, /* 1 (1) - Blue */
319 {0x00, 0xAA, 0x00}, /* 2 (2) - Green */
320 {0x00, 0xAA, 0xAA}, /* 3 (3) - Cyan */
321 {0xAA, 0x00, 0x00}, /* 4 (4) - Red */
322 {0xAA, 0x00, 0xAA}, /* 5 (5) - Magenta */
323 {0xAA, 0x55, 0x00}, /* 6 (6) - Brown */
324 {0xAA, 0xAA, 0xAA}, /* 7 (7) - White (Light gray) */
325 {0x55, 0x55, 0x55}, /* 8 (8) - Dark gray */
326 {0x55, 0x55, 0xFF}, /* 9 (9) - Light blue */
327 {0x55, 0xFF, 0x55}, /* 10 (A) - Light green */
328 {0x55, 0xFF, 0xFF}, /* 11 (B) - Light cyan */
329 {0xFF, 0x55, 0x55}, /* 12 (C) - Light red */
330 {0xFF, 0x55, 0xFF}, /* 13 (D) - Light magenta */
331 {0xFF, 0xFF, 0x55}, /* 14 (E) - Yellow */
332 {0xFF, 0xFF, 0xFF}, /* 15 (F) - Bright White (White) */
333 /* 16 shades of gray */
334 {0x00, 0x00, 0x00}, /* 16 (10) */
335 {0x10, 0x10, 0x10}, /* 17 (11) */
336 {0x20, 0x20, 0x20}, /* 18 (12) */
337 {0x35, 0x35, 0x35}, /* 19 (13) */
338 {0x45, 0x45, 0x45}, /* 20 (14) */
339 {0x55, 0x55, 0x55}, /* 21 (15) */
340 {0x65, 0x65, 0x65}, /* 22 (16) */
341 {0x75, 0x75, 0x75}, /* 23 (17) */
342 {0x8A, 0x8A, 0x8A}, /* 24 (18) */
343 {0x9A, 0x9A, 0x9A}, /* 25 (19) */
344 {0xAA, 0xAA, 0xAA}, /* 26 (1A) */
345 {0xBA, 0xBA, 0xBA}, /* 27 (1B) */
346 {0xCA, 0xCA, 0xCA}, /* 28 (1C) */
347 {0xDF, 0xDF, 0xDF}, /* 29 (1D) */
348 {0xEF, 0xEF, 0xEF}, /* 30 (1E) */
349 {0xFF, 0xFF, 0xFF}, /* 31 (1F) */
350 /* High Intensity group - 72 colors in 1/3 saturation groups (20H-37H high) */
351 {0x00, 0x00, 0xFF}, /* 32 (20) */
352 {0x41, 0x00, 0xFF}, /* 33 (21) */
353 {0x82, 0x00, 0xFF}, /* 34 (22) */
354 {0xBE, 0x00, 0xFF}, /* 35 (23) */
355 {0xFF, 0x00, 0xFF}, /* 36 (24) */
356 {0xFF, 0x00, 0xBE}, /* 37 (25) */
357 {0xFF, 0x00, 0x82}, /* 38 (26) */
358 {0xFF, 0x00, 0x41}, /* 39 (27) */
359 {0xFF, 0x00, 0x00}, /* 40 (28) */
360 {0xFF, 0x41, 0x00}, /* 41 (29) */
361 {0xFF, 0x82, 0x00}, /* 42 (2A) */
362 {0xFF, 0xBE, 0x00}, /* 43 (2B) */
363 {0xFF, 0xFF, 0x00}, /* 44 (2C) */
364 {0xBE, 0xFF, 0x00}, /* 45 (2D) */
365 {0x82, 0xFF, 0x00}, /* 46 (2E) */
366 {0x41, 0xFF, 0x00}, /* 47 (2F) */
367 {0x00, 0xFF, 0x00}, /* 48 (30) */
368 {0x00, 0xFF, 0x41}, /* 49 (31) */
369 {0x00, 0xFF, 0x82}, /* 50 (32) */
370 {0x00, 0xFF, 0xBE}, /* 51 (33) */
371 {0x00, 0xFF, 0xFF}, /* 52 (34) */
372 {0x00, 0xBE, 0xFF}, /* 53 (35) */
373 {0x00, 0x82, 0xFF}, /* 54 (36) */
374 {0x00, 0x41, 0xFF}, /* 55 (37) */
375 /* High Intensity group - 72 colors in 2/3 saturation groups (38H-4FH moderate) */
376 {0x82, 0x82, 0xFF}, /* 56 (38) */
377 {0x9E, 0x82, 0xFF}, /* 57 (39) */
378 {0xBE, 0x82, 0xFF}, /* 58 (3A) */
379 {0xDF, 0x82, 0xFF}, /* 59 (3B) */
380 {0xFF, 0x82, 0xFF}, /* 60 (3C) */
381 {0xFF, 0x82, 0xDF}, /* 61 (3D) */
382 {0xFF, 0x82, 0xBE}, /* 62 (3E) */
383 {0xFF, 0x82, 0x9E}, /* 63 (3F) */
384 {0xFF, 0x82, 0x82}, /* 64 (40) */
385 {0xFF, 0x9E, 0x82}, /* 65 (41) */
386 {0xFF, 0xBE, 0x82}, /* 66 (42) */
387 {0xFF, 0xDF, 0x82}, /* 67 (43) */
388 {0xFF, 0xFF, 0x82}, /* 68 (44) */
389 {0xDF, 0xFF, 0x82}, /* 69 (45) */
390 {0xBE, 0xFF, 0x82}, /* 70 (46) */
391 {0x9E, 0xFF, 0x82}, /* 71 (47) */
392 {0x82, 0xFF, 0x82}, /* 72 (48) */
393 {0x82, 0xFF, 0x9E}, /* 73 (49) */
394 {0x82, 0xFF, 0xBE}, /* 74 (4A) */
395 {0x82, 0xFF, 0xDF}, /* 75 (4B) */
396 {0x82, 0xFF, 0xFF}, /* 76 (4C) */
397 {0x82, 0xDF, 0xFF}, /* 77 (4D) */
398 {0x82, 0xBE, 0xFF}, /* 78 (4E) */
399 {0x82, 0x9E, 0xFF}, /* 79 (4F) */
400 /* High Intensity group - 72 colors in 3/3 saturation groups (50H-67H low) */
401 {0xBA, 0xBA, 0xFF}, /* 80 (50) */
402 {0xCA, 0xBA, 0xFF}, /* 81 (51) */
403 {0xDF, 0xBA, 0xFF}, /* 82 (52) */
404 {0xEF, 0xBA, 0xFF}, /* 83 (53) */
405 {0xFF, 0xBA, 0xFF}, /* 84 (54) */
406 {0xFF, 0xBA, 0xEF}, /* 85 (55) */
407 {0xFF, 0xBA, 0xDF}, /* 86 (56) */
408 {0xFF, 0xBA, 0xCA}, /* 87 (57) */
409 {0xFF, 0xBA, 0xBA}, /* 88 (58) */
410 {0xFF, 0xCA, 0xBA}, /* 89 (59) */
411 {0xFF, 0xDF, 0xBA}, /* 90 (5A) */
412 {0xFF, 0xEF, 0xBA}, /* 91 (5B) */
413 {0xFF, 0xFF, 0xBA}, /* 92 (5C) */
414 {0xEF, 0xFF, 0xBA}, /* 93 (5D) */
415 {0xDF, 0xFF, 0xBA}, /* 94 (5E) */
416 {0xCA, 0xFF, 0xBA}, /* 95 (5F) */
417 {0xBA, 0xFF, 0xBA}, /* 96 (60) */
418 {0xBA, 0xFF, 0xCA}, /* 97 (61) */
419 {0xBA, 0xFF, 0xDF}, /* 98 (62) */
420 {0xBA, 0xFF, 0xEF}, /* 99 (63) */
421 {0xBA, 0xFF, 0xFF}, /* 100 (64) */
422 {0xBA, 0xEF, 0xFF}, /* 101 (65) */
423 {0xBA, 0xDF, 0xFF}, /* 102 (66) */
424 {0xBA, 0xCA, 0xFF}, /* 103 (67) */
425 /* Medium Intensity group - 72 colors in 1/3 saturation groups (68H-7FH high) */
426 {0x00, 0x00, 0x71}, /* 104 (68) */
427 {0x1C, 0x00, 0x71}, /* 105 (69) */
428 {0x39, 0x00, 0x71}, /* 106 (6A) */
429 {0x55, 0x00, 0x71}, /* 107 (6B) */
430 {0x71, 0x00, 0x71}, /* 108 (6C) */
431 {0x71, 0x00, 0x55}, /* 109 (6D) */
432 {0x71, 0x00, 0x39}, /* 110 (6E) */
433 {0x71, 0x00, 0x1C}, /* 111 (6F) */
434 {0x71, 0x00, 0x00}, /* 112 (70) */
435 {0x71, 0x1C, 0x00}, /* 113 (71) */
436 {0x71, 0x39, 0x00}, /* 114 (72) */
437 {0x71, 0x55, 0x00}, /* 115 (73) */
438 {0x71, 0x71, 0x00}, /* 116 (74) */
439 {0x55, 0x71, 0x00}, /* 117 (75) */
440 {0x39, 0x71, 0x00}, /* 118 (76) */
441 {0x1C, 0x71, 0x00}, /* 119 (77) */
442 {0x00, 0x71, 0x00}, /* 120 (78) */
443 {0x00, 0x71, 0x1C}, /* 121 (79) */
444 {0x00, 0x71, 0x39}, /* 122 (7A) */
445 {0x00, 0x71, 0x55}, /* 123 (7B) */
446 {0x00, 0x71, 0x71}, /* 124 (7C) */
447 {0x00, 0x55, 0x71}, /* 125 (7D) */
448 {0x00, 0x39, 0x71}, /* 126 (7E) */
449 {0x00, 0x1C, 0x71}, /* 127 (7F) */
450 /* Medium Intensity group - 72 colors in 2/3 saturation groups (80H-97H moderate) */
451 {0x39, 0x39, 0x71}, /* 128 (80) */
452 {0x45, 0x39, 0x71}, /* 129 (81) */
453 {0x55, 0x39, 0x71}, /* 130 (82) */
454 {0x61, 0x39, 0x71}, /* 131 (83) */
455 {0x71, 0x39, 0x71}, /* 132 (84) */
456 {0x71, 0x39, 0x61}, /* 133 (85) */
457 {0x71, 0x39, 0x55}, /* 134 (86) */
458 {0x71, 0x39, 0x45}, /* 135 (87) */
459 {0x71, 0x39, 0x39}, /* 136 (88) */
460 {0x71, 0x45, 0x39}, /* 137 (89) */
461 {0x71, 0x55, 0x39}, /* 138 (8A) */
462 {0x71, 0x61, 0x39}, /* 139 (8B) */
463 {0x71, 0x71, 0x39}, /* 140 (8C) */
464 {0x61, 0x71, 0x39}, /* 141 (8D) */
465 {0x55, 0x71, 0x39}, /* 142 (8E) */
466 {0x45, 0x71, 0x39}, /* 143 (8F) */
467 {0x39, 0x71, 0x39}, /* 144 (90) */
468 {0x39, 0x71, 0x45}, /* 145 (91) */
469 {0x39, 0x71, 0x55}, /* 146 (92) */
470 {0x39, 0x71, 0x61}, /* 147 (93) */
471 {0x39, 0x71, 0x71}, /* 148 (94) */
472 {0x39, 0x61, 0x71}, /* 149 (95) */
473 {0x39, 0x55, 0x71}, /* 150 (96) */
474 {0x39, 0x45, 0x71}, /* 151 (97) */
475 /* Medium Intensity group - 72 colors in 3/3 saturation groups (98H-AFH low) */
476 {0x51, 0x51, 0x71}, /* 152 (98) */
477 {0x59, 0x51, 0x71}, /* 153 (99) */
478 {0x61, 0x51, 0x71}, /* 154 (9A) */
479 {0x69, 0x51, 0x71}, /* 155 (9B) */
480 {0x71, 0x51, 0x71}, /* 156 (9C) */
481 {0x71, 0x51, 0x69}, /* 157 (9D) */
482 {0x71, 0x51, 0x61}, /* 158 (9E) */
483 {0x71, 0x51, 0x59}, /* 159 (9F) */
484 {0x71, 0x51, 0x51}, /* 160 (A0) */
485 {0x71, 0x59, 0x51}, /* 161 (A1) */
486 {0x71, 0x61, 0x51}, /* 162 (A2) */
487 {0x71, 0x69, 0x51}, /* 163 (A3) */
488 {0x71, 0x71, 0x51}, /* 164 (A4) */
489 {0x69, 0x71, 0x51}, /* 165 (A5) */
490 {0x61, 0x71, 0x51}, /* 166 (A6) */
491 {0x59, 0x71, 0x51}, /* 167 (A7) */
492 {0x51, 0x71, 0x51}, /* 168 (A8) */
493 {0x51, 0x71, 0x59}, /* 169 (A9) */
494 {0x51, 0x71, 0x61}, /* 170 (AA) */
495 {0x51, 0x71, 0x69}, /* 171 (AB) */
496 {0x51, 0x71, 0x71}, /* 172 (AC) */
497 {0x51, 0x69, 0x71}, /* 173 (AD) */
498 {0x51, 0x61, 0x71}, /* 174 (AE) */
499 {0x51, 0x59, 0x71}, /* 175 (AF) */
500 /* Low Intensity group - 72 colors in 1/3 saturation groups (B0H-C7H high) */
501 {0x00, 0x00, 0x41}, /* 176 (B0) */
502 {0x10, 0x00, 0x41}, /* 177 (B1) */
503 {0x20, 0x00, 0x41}, /* 178 (B2) */
504 {0x31, 0x00, 0x41}, /* 179 (B3) */
505 {0x41, 0x00, 0x41}, /* 180 (B4) */
506 {0x41, 0x00, 0x31}, /* 181 (B5) */
507 {0x41, 0x00, 0x20}, /* 182 (B6) */
508 {0x41, 0x00, 0x10}, /* 183 (B7) */
509 {0x41, 0x00, 0x00}, /* 184 (B8) */
510 {0x41, 0x10, 0x00}, /* 185 (B9) */
511 {0x41, 0x20, 0x00}, /* 186 (BA) */
512 {0x41, 0x31, 0x00}, /* 187 (BB) */
513 {0x41, 0x41, 0x00}, /* 188 (BC) */
514 {0x31, 0x41, 0x00}, /* 189 (BD) */
515 {0x20, 0x41, 0x00}, /* 190 (BE) */
516 {0x10, 0x41, 0x00}, /* 191 (BF) */
517 {0x00, 0x41, 0x00}, /* 192 (C0) */
518 {0x00, 0x41, 0x10}, /* 193 (C1) */
519 {0x00, 0x41, 0x20}, /* 194 (C2) */
520 {0x00, 0x41, 0x31}, /* 195 (C3) */
521 {0x00, 0x41, 0x41}, /* 196 (C4) */
522 {0x00, 0x31, 0x41}, /* 197 (C5) */
523 {0x00, 0x20, 0x41}, /* 198 (C6) */
524 {0x00, 0x10, 0x41}, /* 199 (C7) */
525 /* Low Intensity group - 72 colors in 2/3 saturation groups (C8H-DFH moderate) */
526 {0x20, 0x20, 0x41}, /* 200 (C8) */
527 {0x28, 0x20, 0x41}, /* 201 (C9) */
528 {0x31, 0x20, 0x41}, /* 202 (CA) */
529 {0x39, 0x20, 0x41}, /* 203 (CB) */
530 {0x41, 0x20, 0x41}, /* 204 (CC) */
531 {0x41, 0x20, 0x39}, /* 205 (CD) */
532 {0x41, 0x20, 0x31}, /* 206 (CE) */
533 {0x41, 0x20, 0x28}, /* 207 (CF) */
534 {0x41, 0x20, 0x20}, /* 208 (D0) */
535 {0x41, 0x28, 0x20}, /* 209 (D1) */
536 {0x41, 0x31, 0x20}, /* 210 (D2) */
537 {0x41, 0x39, 0x20}, /* 211 (D3) */
538 {0x41, 0x41, 0x20}, /* 212 (D4) */
539 {0x39, 0x41, 0x20}, /* 213 (D5) */
540 {0x31, 0x41, 0x20}, /* 214 (D6) */
541 {0x28, 0x41, 0x20}, /* 215 (D7) */
542 {0x20, 0x41, 0x20}, /* 216 (D8) */
543 {0x20, 0x41, 0x28}, /* 217 (D9) */
544 {0x20, 0x41, 0x31}, /* 218 (DA) */
545 {0x20, 0x41, 0x39}, /* 219 (DB) */
546 {0x20, 0x41, 0x41}, /* 220 (DC) */
547 {0x20, 0x39, 0x41}, /* 221 (DD) */
548 {0x20, 0x31, 0x41}, /* 222 (DE) */
549 {0x20, 0x28, 0x41}, /* 223 (DF) */
550 /* Low Intensity group - 72 colors in 3/3 saturation groups (E0H-F7H low) */
551 {0x2D, 0x2D, 0x41}, /* 223 (E0) */
552 {0x31, 0x2D, 0x41}, /* 224 (E1) */
553 {0x35, 0x2D, 0x41}, /* 225 (E2) */
554 {0x3D, 0x2D, 0x41}, /* 226 (E3) */
555 {0x41, 0x2D, 0x41}, /* 227 (E4) */
556 {0x41, 0x2D, 0x3D}, /* 228 (E5) */
557 {0x41, 0x2D, 0x35}, /* 229 (E6) */
558 {0x41, 0x2D, 0x31}, /* 230 (E7) */
559 {0x41, 0x2D, 0x2D}, /* 231 (E8) */
560 {0x41, 0x31, 0x2D}, /* 232 (E9) */
561 {0x41, 0x35, 0x2D}, /* 233 (EA) */
562 {0x41, 0x3D, 0x2D}, /* 234 (EB) */
563 {0x41, 0x41, 0x2D}, /* 235 (EC) */
564 {0x3D, 0x41, 0x2D}, /* 236 (ED) */
565 {0x35, 0x41, 0x2D}, /* 237 (EE) */
566 {0x31, 0x41, 0x2D}, /* 238 (EF) */
567 {0x2D, 0x41, 0x2D}, /* 239 (F0) */
568 {0x2D, 0x41, 0x31}, /* 240 (F1) */
569 {0x2D, 0x41, 0x35}, /* 241 (F2) */
570 {0x2D, 0x41, 0x3D}, /* 242 (F3) */
571 {0x2D, 0x41, 0x41}, /* 243 (F4) */
572 {0x2D, 0x3D, 0x41}, /* 244 (F5) */
573 {0x2D, 0x35, 0x41}, /* 245 (F6) */
574 {0x2D, 0x31, 0x41}, /* 246 (F7) */
575 /* Fill up remainder of palettes with black */
576 {0,0,0}
577 };
578
579 /*
580 * Mode 18 Default Color Register Setting
581 * DAC palette registers, converted from actual 18 bit color to 24.
582 *
583 * This palette is the dos default, converted from 18 bit color to 24.
584 * It contains only 64 entries of colors--all others are zeros.
585 * --Robert 'Admiral' Coeyman
586 */
587 static PALETTEENTRY vga_def64_palette[256]={
588 /* red green blue */
589 {0x00, 0x00, 0x00}, /* 0x00 Black */
590 {0x00, 0x00, 0xaa}, /* 0x01 Blue */
591 {0x00, 0xaa, 0x00}, /* 0x02 Green */
592 {0x00, 0xaa, 0xaa}, /* 0x03 Cyan */
593 {0xaa, 0x00, 0x00}, /* 0x04 Red */
594 {0xaa, 0x00, 0xaa}, /* 0x05 Magenta */
595 {0xaa, 0xaa, 0x00}, /* 0x06 */
596 {0xaa, 0xaa, 0xaa}, /* 0x07 White (Light Gray) */
597 {0x00, 0x00, 0x55}, /* 0x08 */
598 {0x00, 0x00, 0xff}, /* 0x09 */
599 {0x00, 0xaa, 0x55}, /* 0x0a */
600 {0x00, 0xaa, 0xff}, /* 0x0b */
601 {0xaa, 0x00, 0x55}, /* 0x0c */
602 {0xaa, 0x00, 0xff}, /* 0x0d */
603 {0xaa, 0xaa, 0x55}, /* 0x0e */
604 {0xaa, 0xaa, 0xff}, /* 0x0f */
605 {0x00, 0x55, 0x00}, /* 0x10 */
606 {0x00, 0x55, 0xaa}, /* 0x11 */
607 {0x00, 0xff, 0x00}, /* 0x12 */
608 {0x00, 0xff, 0xaa}, /* 0x13 */
609 {0xaa, 0x55, 0x00}, /* 0x14 Brown */
610 {0xaa, 0x55, 0xaa}, /* 0x15 */
611 {0xaa, 0xff, 0x00}, /* 0x16 */
612 {0xaa, 0xff, 0xaa}, /* 0x17 */
613 {0x00, 0x55, 0x55}, /* 0x18 */
614 {0x00, 0x55, 0xff}, /* 0x19 */
615 {0x00, 0xff, 0x55}, /* 0x1a */
616 {0x00, 0xff, 0xff}, /* 0x1b */
617 {0xaa, 0x55, 0x55}, /* 0x1c */
618 {0xaa, 0x55, 0xff}, /* 0x1d */
619 {0xaa, 0xff, 0x55}, /* 0x1e */
620 {0xaa, 0xff, 0xff}, /* 0x1f */
621 {0x55, 0x00, 0x00}, /* 0x20 */
622 {0x55, 0x00, 0xaa}, /* 0x21 */
623 {0x55, 0xaa, 0x00}, /* 0x22 */
624 {0x55, 0xaa, 0xaa}, /* 0x23 */
625 {0xff, 0x00, 0x00}, /* 0x24 */
626 {0xff, 0x00, 0xaa}, /* 0x25 */
627 {0xff, 0xaa, 0x00}, /* 0x26 */
628 {0xff, 0xaa, 0xaa}, /* 0x27 */
629 {0x55, 0x00, 0x55}, /* 0x28 */
630 {0x55, 0x00, 0xff}, /* 0x29 */
631 {0x55, 0xaa, 0x55}, /* 0x2a */
632 {0x55, 0xaa, 0xff}, /* 0x2b */
633 {0xff, 0x00, 0x55}, /* 0x2c */
634 {0xff, 0x00, 0xff}, /* 0x2d */
635 {0xff, 0xaa, 0x55}, /* 0x2e */
636 {0xff, 0xaa, 0xff}, /* 0x2f */
637 {0x55, 0x55, 0x00}, /* 0x30 */
638 {0x55, 0x55, 0xaa}, /* 0x31 */
639 {0x55, 0xff, 0x00}, /* 0x32 */
640 {0x55, 0xff, 0xaa}, /* 0x33 */
641 {0xff, 0x55, 0x00}, /* 0x34 */
642 {0xff, 0x55, 0xaa}, /* 0x35 */
643 {0xff, 0xff, 0x00}, /* 0x36 */
644 {0xff, 0xff, 0xaa}, /* 0x37 */
645 {0x55, 0x55, 0x55}, /* 0x38 Dark Gray */
646 {0x55, 0x55, 0xff}, /* 0x39 Light Blue */
647 {0x55, 0xff, 0x55}, /* 0x3a Light Green */
648 {0x55, 0xff, 0xff}, /* 0x3b Light Cyan */
649 {0xff, 0x55, 0x55}, /* 0x3c Light Red */
650 {0xff, 0x55, 0xff}, /* 0x3d Light Magenta */
651 {0xff, 0xff, 0x55}, /* 0x3e Yellow */
652 {0xff, 0xff, 0xff}, /* 0x3f White */
653 {0,0,0} /* The next 192 entries are all zeros */
654 };
655
656 static HANDLE VGA_timer;
657 static HANDLE VGA_timer_thread;
658
659 /* set the timer rate; called in the polling thread context */
660 static void CALLBACK set_timer_rate( ULONG_PTR arg )
661 {
662 LARGE_INTEGER when;
663
664 when.u.LowPart = when.u.HighPart = 0;
665 SetWaitableTimer( VGA_timer, &when, arg, VGA_Poll, 0, FALSE );
666 }
667
668 static DWORD CALLBACK VGA_TimerThread( void *dummy )
669 {
670 for (;;) SleepEx( INFINITE, TRUE );
671 return 0;
672 }
673
674 static void VGA_DeinstallTimer(void)
675 {
676 if (VGA_timer_thread)
677 {
678 /*
679 * Make sure the update thread is not holding
680 * system resources when we kill it.
681 *
682 * Now, we only need to worry about update thread
683 * getting terminated while in EnterCriticalSection
684 * or WaitForMultipleObjectsEx.
685 *
686 * FIXME: Is this a problem?
687 */
688 EnterCriticalSection(&vga_lock);
689
690 CancelWaitableTimer( VGA_timer );
691 CloseHandle( VGA_timer );
692 TerminateThread( VGA_timer_thread, 0 );
693 CloseHandle( VGA_timer_thread );
694 VGA_timer_thread = 0;
695
696 LeaveCriticalSection(&vga_lock);
697
698 /*
699 * Synchronize display. This makes sure that
700 * changes to display become visible even if program
701 * terminates before update thread had time to run.
702 */
703 VGA_Poll( 0, 0, 0 );
704 }
705 }
706
707 static void VGA_InstallTimer(unsigned Rate)
708 {
709 if (!VGA_timer_thread)
710 {
711 VGA_timer = CreateWaitableTimerA( NULL, FALSE, NULL );
712 VGA_timer_thread = CreateThread( NULL, 0, VGA_TimerThread, NULL, 0, NULL );
713 }
714 QueueUserAPC( set_timer_rate, VGA_timer_thread, (ULONG_PTR)Rate );
715 }
716
717 static BOOL VGA_IsTimerRunning(void)
718 {
719 return VGA_timer_thread != 0;
720 }
721
722 static HANDLE VGA_AlphaConsole(void)
723 {
724 /* this assumes that no Win32 redirection has taken place, but then again,
725 * only 16-bit apps are likely to use this part of Wine... */
726 return GetStdHandle(STD_OUTPUT_HANDLE);
727 }
728
729 static char*VGA_AlphaBuffer(void)
730 {
731 return (char *)0xb8000;
732 }
733
734 /*** GRAPHICS MODE ***/
735
736 typedef struct {
737 unsigned Xres, Yres, Depth;
738 int ret;
739 } ModeSet;
740
741
742 /**********************************************************************
743 * VGA_SyncWindow
744 *
745 * Copy VGA window into framebuffer (if argument is TRUE) or
746 * part of framebuffer into VGA window (if argument is FALSE).
747 */
748 static void VGA_SyncWindow( BOOL target_is_fb )
749 {
750 int size = vga_fb_window_size;
751
752 /* Window does not overlap framebuffer. */
753 if (vga_fb_window >= vga_fb_size)
754 return;
755
756 /* Check if window overlaps framebuffer only partially. */
757 if (vga_fb_size - vga_fb_window < vga_fb_window_size)
758 size = vga_fb_size - vga_fb_window;
759
760 if (target_is_fb)
761 memmove( vga_fb_data + vga_fb_window, vga_fb_window_data, size );
762 else
763 memmove( vga_fb_window_data, vga_fb_data + vga_fb_window, size );
764 }
765
766
767 static void WINAPI VGA_DoExit(ULONG_PTR arg)
768 {
769 VGA_DeinstallTimer();
770 IDirectDrawSurface_SetPalette(lpddsurf,NULL);
771 IDirectDrawSurface_Release(lpddsurf);
772 lpddsurf=NULL;
773 IDirectDrawPalette_Release(lpddpal);
774 lpddpal=NULL;
775 IDirectDraw_Release(lpddraw);
776 lpddraw=NULL;
777 }
778
779 static void WINAPI VGA_DoSetMode(ULONG_PTR arg)
780 {
781 HRESULT res;
782 ModeSet *par = (ModeSet *)arg;
783 par->ret=1;
784
785 if (lpddraw) VGA_DoExit(0);
786 if (!lpddraw) {
787 res = DirectDrawCreate(NULL,&lpddraw,NULL);
788 if (!lpddraw) {
789 ERR("DirectDraw is not available (res = 0x%x)\n",res);
790 return;
791 }
792 if (!vga_hwnd) {
793 vga_hwnd = CreateWindowExA(0,"STATIC","WINEDOS VGA",
794 WS_POPUP|WS_VISIBLE|SS_NOTIFY,0,0,
795 par->Xres,par->Yres,0,0,0,NULL);
796 if (!vga_hwnd) {
797 ERR("Failed to create user window.\n");
798 IDirectDraw_Release(lpddraw);
799 lpddraw=NULL;
800 return;
801 }
802 }
803 else
804 SetWindowPos(vga_hwnd,0,0,0,par->Xres,par->Yres,SWP_NOMOVE|SWP_NOZORDER);
805
806 res=IDirectDraw_SetCooperativeLevel(lpddraw,vga_hwnd,DDSCL_FULLSCREEN|DDSCL_EXCLUSIVE);
807 if (res != S_OK) {
808 ERR("Could not set cooperative level to exclusive (0x%x)\n",res);
809 }
810
811 res=IDirectDraw_SetDisplayMode(lpddraw,par->Xres,par->Yres,par->Depth);
812 if (res != S_OK) {
813 ERR("DirectDraw does not support requested display mode (%dx%dx%d), res = 0x%x!\n",par->Xres,par->Yres,par->Depth,res);
814 IDirectDraw_Release(lpddraw);
815 lpddraw=NULL;
816 return;
817 }
818
819 res=IDirectDraw_CreatePalette(lpddraw,DDPCAPS_8BIT,NULL,&lpddpal,NULL);
820 if (res != S_OK) {
821 ERR("Could not create palette (res = 0x%x)\n",res);
822 IDirectDraw_Release(lpddraw);
823 lpddraw=NULL;
824 return;
825 }
826
827 res=IDirectDrawPalette_SetEntries(lpddpal,0,0,vga_fb_palette_size,vga_fb_palette);
828 if (res != S_OK) {
829 ERR("Could not set default palette entries (res = 0x%x)\n", res);
830 }
831
832 memset(&sdesc,0,sizeof(sdesc));
833 sdesc.dwSize=sizeof(sdesc);
834 sdesc.dwFlags = DDSD_CAPS;
835 sdesc.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
836 res=IDirectDraw_CreateSurface(lpddraw,&sdesc,&lpddsurf,NULL);
837 if (res != S_OK || !lpddsurf) {
838 ERR("DirectDraw surface is not available\n");
839 IDirectDraw_Release(lpddraw);
840 lpddraw=NULL;
841 return;
842 }
843 IDirectDrawSurface_SetPalette(lpddsurf,lpddpal);
844 vga_retrace_vertical = vga_retrace_horizontal = FALSE;
845 /* poll every 20ms (50fps should provide adequate responsiveness) */
846 VGA_InstallTimer(20);
847 }
848 par->ret=0;
849 return;
850 }
851
852 /**********************************************************************\
853 * VGA_GetModeInfo
854 *
855 * Returns mode information, given mode number
856 \**********************************************************************/
857 const VGA_MODE *VGA_GetModeInfo(WORD mode)
858 {
859 const VGA_MODE *ModeInfo = VGA_modelist;
860
861 /*
862 * Filter out flags.
863 */
864 mode &= 0x17f;
865
866 while (ModeInfo->Mode != 0xffff)
867 {
868 if (ModeInfo->Mode == mode)
869 return ModeInfo;
870 ModeInfo++;
871 }
872 return NULL;
873 }
874
875 static int VGA_SetGraphicMode(WORD mode)
876 {
877 ModeSet par;
878 int newSize;
879
880 /* get info on VGA mode & set appropriately */
881 const VGA_MODE *ModeInfo = VGA_GetModeInfo(VGA_CurrentMode);
882 /* check if we're assuming composite display */
883 if ((mode == 6) && (CGA_ColorComposite))
884 {
885 vga_fb_width = (ModeInfo->Width / 4);
886 vga_fb_height = ModeInfo->Height;
887 vga_fb_depth = (ModeInfo->Depth * 4);
888 }
889 else
890 {
891 vga_fb_width = ModeInfo->Width;
892 vga_fb_height = ModeInfo->Height;
893 vga_fb_depth = ModeInfo->Depth;
894 }
895 vga_fb_offset = 0;
896 vga_fb_pitch = vga_fb_width * ((vga_fb_depth + 7) / 8);
897
898 newSize = vga_fb_width * vga_fb_height * ((vga_fb_depth + 7) / 8);
899 if(newSize < 256 * 1024)
900 newSize = 256 * 1024;
901
902 if(vga_fb_size < newSize) {
903 HeapFree(GetProcessHeap(), 0, vga_fb_data);
904 vga_fb_data = HeapAlloc(GetProcessHeap(), 0, newSize);
905 vga_fb_size = newSize;
906 }
907
908 if(vga_fb_width >= 640 || vga_fb_height >= 480) {
909 par.Xres = vga_fb_width;
910 par.Yres = vga_fb_height;
911 } else {
912 par.Xres = 640;
913 par.Yres = 480;
914 }
915
916 /* Setup window */
917 if(vga_fb_depth >= 8)
918 {
919 vga_fb_window_data = VGA_WINDOW_START;
920 vga_fb_window_size = VGA_WINDOW_SIZE;
921 vga_fb_palette = vga_def_palette;
922 vga_fb_palette_size = 256;
923 }
924 else
925 {
926 vga_fb_window_data = CGA_WINDOW_START;
927 vga_fb_window_size = CGA_WINDOW_SIZE;
928 if(vga_fb_depth == 2)
929 {
930 /* Select default 2 bit CGA palette */
931 vga_fb_palette = cga_palette1;
932 vga_fb_palette_size = 4;
933 }
934 else
935 {
936 /* Top of VGA palette is same as 4 bit CGA palette */
937 vga_fb_palette = vga_def_palette;
938 vga_fb_palette_size = 16;
939 }
940
941 vga_fb_palette_index = 0;
942 vga_fb_bright = 0;
943 }
944
945 /* Clean the HW buffer */
946 memset(vga_fb_window_data, 0x00, vga_fb_window_size);
947
948 /* Reset window start */
949 VGA_SetWindowStart(0);
950
951 par.Depth = (vga_fb_depth < 8) ? 8 : vga_fb_depth;
952
953 MZ_RunInThread(VGA_DoSetMode, (ULONG_PTR)&par);
954 return par.ret;
955 }
956
957 int VGA_SetMode(WORD mode)
958 {
959 const VGA_MODE *ModeInfo;
960 /* get info on VGA mode & set appropriately */
961 VGA_CurrentMode = mode;
962 ModeInfo = VGA_GetModeInfo(VGA_CurrentMode);
963
964 /* check if mode is supported */
965 if (ModeInfo->Supported)
966 {
967 FIXME("Setting VGA mode %i - Supported mode - Improve reporting of missing capabilities for modes & modetypes.\n", mode);
968 }
969 else
970 {
971 FIXME("Setting VGA mode %i - Unsupported mode - Will doubtfully work at all, but we'll try anyways.\n", mode);
972 }
973
974 /* set up graphic or text display */
975 if (ModeInfo->ModeType == TEXT)
976 {
977 VGA_SetAlphaMode(ModeInfo->TextCols, ModeInfo->TextRows);
978 }
979 else
980 {
981 return VGA_SetGraphicMode(mode);
982 }
983 return 0; /* assume all good & return zero */
984 }
985
986 int VGA_GetMode(unsigned*Height,unsigned*Width,unsigned*Depth)
987 {
988 if (!lpddraw) return 1;
989 if (!lpddsurf) return 1;
990 if (Height) *Height=sdesc.dwHeight;
991 if (Width) *Width=sdesc.dwWidth;
992 if (Depth) *Depth=sdesc.ddpfPixelFormat.u1.dwRGBBitCount;
993 return 0;
994 }
995
996 static void VGA_Exit(void)
997 {
998 if (lpddraw) MZ_RunInThread(VGA_DoExit, 0);
999 }
1000
1001 void VGA_SetPalette(PALETTEENTRY*pal,int start,int len)
1002 {
1003 if (!lpddraw) return;
1004 IDirectDrawPalette_SetEntries(lpddpal,0,start,len,pal);
1005 }
1006
1007 /* set a single [char wide] color in 16 color mode. */
1008 void VGA_SetColor16(int reg,int color)
1009 {
1010 PALETTEENTRY *pal;
1011
1012 if (!lpddraw) return;
1013 pal= &vga_def64_palette[color];
1014 IDirectDrawPalette_SetEntries(lpddpal,0,reg,1,pal);
1015 vga_16_palette[reg]=(char)color;
1016 }
1017
1018 /* Get a single [char wide] color in 16 color mode. */
1019 char VGA_GetColor16(int reg)
1020 {
1021
1022 if (!lpddraw) return 0;
1023 return vga_16_palette[reg];
1024 }
1025
1026 /* set all 17 [char wide] colors at once in 16 color mode. */
1027 void VGA_Set16Palette(char *Table)
1028 {
1029 PALETTEENTRY *pal;
1030 int c;
1031
1032 if (!lpddraw) return; /* return if we're in text only mode */
1033 memcpy( Table, vga_16_palette, 17 ); /* copy the entries into the table */
1034
1035 for (c=0; c<17; c++) { /* 17 entries */
1036 pal= &vga_def64_palette[(int)vga_16_palette[c]]; /* get color */
1037 IDirectDrawPalette_SetEntries(lpddpal,0,c,1,pal); /* set entry */
1038 TRACE("Palette register %d set to %d\n",c,(int)vga_16_palette[c]);
1039 } /* end of the counting loop */
1040 }
1041
1042 /* Get all 17 [ char wide ] colors at once in 16 color mode. */
1043 void VGA_Get16Palette(char *Table)
1044 {
1045
1046 if (!lpddraw) return; /* return if we're in text only mode */
1047 memcpy( vga_16_palette, Table, 17 ); /* copy the entries into the table */
1048 }
1049
1050 static LPSTR VGA_Lock(unsigned*Pitch,unsigned*Height,unsigned*Width,unsigned*Depth)
1051 {
1052 if (!lpddraw) return NULL;
1053 if (!lpddsurf) return NULL;
1054 if (IDirectDrawSurface_Lock(lpddsurf,NULL,&sdesc,0,0) != S_OK) {
1055 ERR("could not lock surface!\n");
1056 return NULL;
1057 }
1058 if (Pitch) *Pitch=sdesc.u1.lPitch;
1059 if (Height) *Height=sdesc.dwHeight;
1060 if (Width) *Width=sdesc.dwWidth;
1061 if (Depth) *Depth=sdesc.ddpfPixelFormat.u1.dwRGBBitCount;
1062 return sdesc.lpSurface;
1063 }
1064
1065 static void VGA_Unlock(void)
1066 {
1067 IDirectDrawSurface_Unlock(lpddsurf,sdesc.lpSurface);
1068 }
1069
1070 /*
1071 * Set start of 64k window at 0xa0000 in bytes.
1072 * If value is -1, initialize color plane support.
1073 * If value is >= 0, window contains direct copy of framebuffer.
1074 */
1075 void VGA_SetWindowStart(int start)
1076 {
1077 if(start == vga_fb_window)
1078 return;
1079
1080 EnterCriticalSection(&vga_lock);
1081
1082 if(vga_fb_window == -1)
1083 FIXME("Remove VGA memory emulation.\n");
1084 else
1085 VGA_SyncWindow( TRUE );
1086
1087 vga_fb_window = start;
1088
1089 if(vga_fb_window == -1)
1090 FIXME("Install VGA memory emulation.\n");
1091 else
1092 VGA_SyncWindow( FALSE );
1093
1094 LeaveCriticalSection(&vga_lock);
1095 }
1096
1097 /*
1098 * Get start of 64k window at 0xa0000 in bytes.
1099 * Value is -1 in color plane modes.
1100 */
1101 int VGA_GetWindowStart(void)
1102 {
1103 return vga_fb_window;
1104 }
1105
1106
1107 /**********************************************************************
1108 * VGA_DoShowMouse
1109 *
1110 * Callback for VGA_ShowMouse.
1111 */
1112 static void WINAPI VGA_DoShowMouse( ULONG_PTR show )
1113 {
1114 INT rv;
1115
1116 do
1117 {
1118 rv = ShowCursor( show );
1119 }
1120 while( show ? (rv < 0) : (rv >= 0) );
1121 }
1122
1123
1124 /**********************************************************************
1125 * VGA_ShowMouse
1126 *
1127 * If argument is TRUE, unconditionally show mouse cursor.
1128 * If argument is FALSE, unconditionally hide mouse cursor.
1129 * This only works in graphics mode.
1130 */
1131 void VGA_ShowMouse( BOOL show )
1132 {
1133 if (lpddraw)
1134 MZ_RunInThread( VGA_DoShowMouse, (ULONG_PTR)show );
1135 }
1136
1137
1138 /**********************************************************************
1139 * VGA_UpdatePalette
1140 *
1141 * Update the current palette
1142 *
1143 * Note: When updating the current CGA palette, palette index 0
1144 * refers to palette2, and index 1 is palette1 (default palette)
1145 */
1146 void VGA_UpdatePalette(void)
1147 {
1148 /* Figure out which palette is used now */
1149 if(vga_fb_bright)
1150 {
1151 if(vga_fb_palette_index == 0)
1152 {
1153 vga_fb_palette = cga_palette2_bright;
1154 }
1155 else if(vga_fb_palette_index == 1)
1156 {
1157 vga_fb_palette = cga_palette1_bright;
1158 }
1159 }
1160 else
1161 {
1162 if(vga_fb_palette_index == 0)
1163 {
1164 vga_fb_palette = cga_palette2;
1165 }
1166 else if(vga_fb_palette_index == 1)
1167 {
1168 vga_fb_palette = cga_palette1;
1169 }
1170 }
1171
1172 /* Now update the palette */
1173 VGA_SetPalette(vga_fb_palette,0,4);
1174 }
1175
1176 /**********************************************************************
1177 * VGA_SetBright
1178 *
1179 * Select if using a "bright" palette or not.
1180 * This is a property of the CGA controller
1181 */
1182 void VGA_SetBright(BOOL bright)
1183 {
1184 TRACE("%i\n", bright);
1185
1186 /* Remember the "bright" value used by the CGA controller */
1187 vga_fb_bright = bright;
1188 }
1189
1190 /**********************************************************************
1191 * VGA_SetEnabled
1192 *
1193 * Select if output is enabled or disabled
1194 * This is a property of the CGA controller
1195 */
1196 static void VGA_SetEnabled(BOOL enabled)
1197 {
1198 TRACE("%i\n", enabled);
1199
1200 /* Check if going from enabled to disabled */
1201 if(vga_fb_enabled && !enabled)
1202 {
1203 /* Clear frame buffer */
1204 memset(vga_fb_window_data, 0x00, vga_fb_window_size);
1205 }
1206
1207 /* Remember the "enabled" value */
1208 vga_fb_enabled = enabled;
1209 }
1210
1211 /**********************************************************************
1212 * VGA_SetPaletteIndex
1213 *
1214 * Select the index of the palette which is currently in use
1215 * This is a property of the CGA controller
1216 */
1217 void VGA_SetPaletteIndex(unsigned index)
1218 {
1219 TRACE("%i\n", index);
1220
1221 /* Remember the palette index, which is only used by CGA for now */
1222 vga_fb_palette_index = index;
1223 }
1224
1225 /**********************************************************************
1226 * VGA_WritePixel
1227 *
1228 * Write data to the framebuffer
1229 * This is a property of the CGA controller, but might be supported
1230 * later by other framebuffer types
1231 */
1232 void VGA_WritePixel(unsigned color, unsigned page, unsigned col, unsigned row)
1233 {
1234 int off;
1235 int bits;
1236 int pos;
1237
1238 /* Calculate CGA byte offset */
1239 char *data = vga_fb_window_data;
1240 off = row & 1 ? (8 * 1024) : 0;
1241 off += (80 * (row/2));
1242 off += col/4;
1243
1244 /* Calculate bits offset */
1245 pos = 6 - (col%4 * 2);
1246
1247 /* Clear current data */
1248 bits = 0x03 << pos;
1249 data[off] &= ~bits;
1250
1251 /* Set new data */
1252 bits = color << pos;
1253 data[off] |= bits;
1254 }
1255
1256 /*** TEXT MODE ***/
1257
1258 /* prepare the text mode video memory copy that is used to only
1259 * update the video memory line that did get updated. */
1260 static void VGA_PrepareVideoMemCopy(unsigned Xres, unsigned Yres)
1261 {
1262 char *p, *p2;
1263 unsigned int i;
1264
1265 /*
1266 * Allocate space for char + attr.
1267 */
1268
1269 if (vga_text_old)
1270 vga_text_old = HeapReAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY,
1271 vga_text_old, Xres * Yres * 2 );
1272 else
1273 vga_text_old = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY,
1274 Xres * Yres * 2 );
1275 p = VGA_AlphaBuffer();
1276 p2 = vga_text_old;
1277
1278 /* make sure the video mem copy contains the exact opposite of our
1279 * actual text mode memory area to make sure the screen
1280 * does get updated fully initially */
1281 for (i=0; i < Xres*Yres*2; i++)
1282 *p2++ = *p++ ^ 0xff; /* XOR it */
1283 }
1284
1285 /**********************************************************************
1286 * VGA_SetAlphaMode
1287 *
1288 * Set VGA emulation to text mode.
1289 */
1290 void VGA_SetAlphaMode(unsigned Xres,unsigned Yres)
1291 {
1292 VGA_Exit();
1293 VGA_DeinstallTimer();
1294
1295 VGA_PrepareVideoMemCopy(Xres, Yres);
1296 vga_text_width = Xres;
1297 vga_text_height = Yres;
1298
1299 if (vga_text_x >= vga_text_width || vga_text_y >= vga_text_height)
1300 VGA_SetCursorPos(0,0);
1301
1302 if(vga_text_console) {
1303 COORD size;
1304 size.X = Xres;
1305 size.Y = Yres;
1306 SetConsoleScreenBufferSize( VGA_AlphaConsole(), size );
1307
1308 /* poll every 30ms (33fps should provide adequate responsiveness) */
1309 VGA_InstallTimer(30);
1310 }
1311 }
1312
1313 /**********************************************************************
1314 * VGA_InitAlphaMode
1315 *
1316 * Initialize VGA text mode handling and return default text mode.
1317 * This function does not set VGA emulation to text mode.
1318 */
1319 void VGA_InitAlphaMode(unsigned*Xres,unsigned*Yres)
1320 {
1321 CONSOLE_SCREEN_BUFFER_INFO info;
1322
1323 if(GetConsoleScreenBufferInfo( VGA_AlphaConsole(), &info ))
1324 {
1325 vga_text_console = TRUE;
1326 vga_text_x = info.dwCursorPosition.X;
1327 vga_text_y = info.dwCursorPosition.Y;
1328 vga_text_attr = info.wAttributes;
1329 *Xres = info.dwSize.X;
1330 *Yres = info.dwSize.Y;
1331 }
1332 else
1333 {
1334 vga_text_console = FALSE;
1335 vga_text_x = 0;
1336 vga_text_y = 0;
1337 vga_text_attr = 0x0f;
1338 *Xres = 80;
1339 *Yres = 25;
1340 }
1341 }
1342
1343 /**********************************************************************
1344 * VGA_GetAlphaMode
1345 *
1346 * Get current text mode. Returns TRUE and sets resolution if
1347 * any VGA text mode has been initialized.
1348 */
1349 BOOL VGA_GetAlphaMode(unsigned*Xres,unsigned*Yres)
1350 {
1351 if (vga_text_width != 0 && vga_text_height != 0) {
1352 *Xres = vga_text_width;
1353 *Yres = vga_text_height;
1354 return TRUE;
1355 } else
1356 return FALSE;
1357 }
1358
1359 void VGA_SetCursorShape(unsigned char start_options, unsigned char end)
1360 {
1361 CONSOLE_CURSOR_INFO cci;
1362
1363 /* standard cursor settings:
1364 * 0x0607 == CGA, 0x0b0c == monochrome, 0x0d0e == EGA/VGA */
1365
1366 /* calculate percentage from bottom - assuming VGA (bottom 0x0e) */
1367 cci.dwSize = ((end & 0x1f) - (start_options & 0x1f))/0x0e * 100;
1368 if (!cci.dwSize) cci.dwSize++; /* NULL cursor would make SCCI() fail ! */
1369 cci.bVisible = ((start_options & 0x60) != 0x20); /* invisible ? */
1370
1371 SetConsoleCursorInfo(VGA_AlphaConsole(),&cci);
1372 }
1373
1374 void VGA_SetCursorPos(unsigned X,unsigned Y)
1375 {
1376 vga_text_x = X;
1377 vga_text_y = Y;
1378 }
1379
1380 void VGA_GetCursorPos(unsigned*X,unsigned*Y)
1381 {
1382 if (X) *X = vga_text_x;
1383 if (Y) *Y = vga_text_y;
1384 }
1385
1386 static void VGA_PutCharAt(unsigned x, unsigned y, BYTE ascii, int attr)
1387 {
1388 const VGA_MODE *ModeInfo = VGA_GetModeInfo(VGA_CurrentMode);
1389 if ( ModeInfo->ModeType == TEXT )
1390 {
1391 char *dat = VGA_AlphaBuffer() + ((vga_text_width * y + x) * 2);
1392 dat[0] = ascii;
1393 if (attr>=0)
1394 dat[1] = attr;
1395 }
1396 else
1397 {
1398 FIXME("Write %c at (%i,%i) - not yet supported in graphic modes.\n", (char)ascii, x, y);
1399 }
1400 }
1401
1402 void VGA_WriteChars(unsigned X,unsigned Y,unsigned ch,int attr,int count)
1403 {
1404 EnterCriticalSection(&vga_lock);
1405
1406 while (count--)
1407 VGA_PutCharAt(X + count, Y, ch, attr);
1408
1409 LeaveCriticalSection(&vga_lock);
1410 }
1411
1412 void VGA_PutChar(BYTE ascii)
1413 {
1414 DWORD w;
1415
1416 EnterCriticalSection(&vga_lock);
1417
1418 switch(ascii) {
1419 case '\b':
1420 if (vga_text_x)
1421 {
1422 vga_text_x--;
1423 VGA_PutCharAt(vga_text_x, vga_text_y, ' ', 0);
1424 }
1425 break;
1426
1427 case '\t':
1428 vga_text_x += ((vga_text_x + 8) & ~7) - vga_text_x;
1429 break;
1430
1431 case '\n':
1432 vga_text_y++;
1433 vga_text_x = 0;
1434 break;
1435
1436 case '\a':
1437 break;
1438
1439 case '\r':
1440 vga_text_x = 0;
1441 break;
1442
1443 default:
1444 VGA_PutCharAt(vga_text_x, vga_text_y, ascii, vga_text_attr);
1445 vga_text_x++;
1446 }
1447
1448 if (vga_text_x >= vga_text_width)
1449 {
1450 vga_text_x = 0;
1451 vga_text_y++;
1452 }
1453
1454 if (vga_text_y >= vga_text_height)
1455 {
1456 vga_text_y = vga_text_height - 1;
1457 VGA_ScrollUpText( 0, 0,
1458 vga_text_height - 1, vga_text_width - 1,
1459 1, vga_text_attr );
1460 }
1461
1462 /*
1463 * If we don't have a console, write directly to standard output.
1464 */
1465 if(!vga_text_console)
1466 WriteFile(VGA_AlphaConsole(), &ascii, 1, &w, NULL);
1467
1468 LeaveCriticalSection(&vga_lock);
1469 }
1470
1471 void VGA_ClearText(unsigned row1, unsigned col1,
1472 unsigned row2, unsigned col2,
1473 BYTE attr)
1474 {
1475 unsigned x, y;
1476
1477 EnterCriticalSection(&vga_lock);
1478
1479 for(y=row1; y<=row2; y++)
1480 for(x=col1; x<=col2; x++)
1481 VGA_PutCharAt(x, y, 0x20, attr);
1482
1483 LeaveCriticalSection(&vga_lock);
1484 }
1485
1486 void VGA_ScrollUpText(unsigned row1, unsigned col1,
1487 unsigned row2, unsigned col2,
1488 unsigned lines, BYTE attr)
1489 {
1490 char *buffer = VGA_AlphaBuffer();
1491 unsigned y;
1492
1493 EnterCriticalSection(&vga_lock);
1494
1495 /*
1496 * Scroll buffer.
1497 */
1498 for (y = row1; y <= row2 - lines; y++)
1499 memmove( buffer + col1 + y * vga_text_width * 2,
1500 buffer + col1 + (y + lines) * vga_text_width * 2,
1501 (col2 - col1 + 1) * 2 );
1502
1503 /*
1504 * Fill exposed lines.
1505 */
1506 for (y = max(row1, row2 - lines + 1); y <= row2; y++)
1507 VGA_WriteChars( col1, y, ' ', attr, col2 - col1 + 1 );
1508
1509 LeaveCriticalSection(&vga_lock);
1510 }
1511
1512 void VGA_ScrollDownText(unsigned row1, unsigned col1,
1513 unsigned row2, unsigned col2,
1514 unsigned lines, BYTE attr)
1515 {
1516 char *buffer = VGA_AlphaBuffer();
1517 unsigned y;
1518
1519 EnterCriticalSection(&vga_lock);
1520
1521 /*
1522 * Scroll buffer.
1523 */
1524 for (y = row2; y >= row1 + lines; y--)
1525 memmove( buffer + col1 + y * vga_text_width * 2,
1526 buffer + col1 + (y - lines) * vga_text_width * 2,
1527 (col2 - col1 + 1) * 2 );
1528
1529 /*
1530 * Fill exposed lines.
1531 */
1532 for (y = row1; y <= min(row1 + lines - 1, row2); y++)
1533 VGA_WriteChars( col1, y, ' ', attr, col2 - col1 + 1 );
1534
1535 LeaveCriticalSection(&vga_lock);
1536 }
1537
1538 void VGA_GetCharacterAtCursor(BYTE *ascii, BYTE *attr)
1539 {
1540 char *dat;
1541
1542 dat = VGA_AlphaBuffer() + ((vga_text_width * vga_text_y + vga_text_x) * 2);
1543
1544 *ascii = dat[0];
1545 *attr = dat[1];
1546 }
1547
1548
1549 /*** CONTROL ***/
1550
1551 /* FIXME: optimize by doing this only if the data has actually changed
1552 * (in a way similar to DIBSection, perhaps) */
1553 static void VGA_Poll_Graphics(void)
1554 {
1555 unsigned int Pitch, Height, Width, X, Y;
1556 char *surf;
1557 char *dat = vga_fb_data + vga_fb_offset;
1558 int bpp = (vga_fb_depth + 7) / 8;
1559
1560 surf = VGA_Lock(&Pitch,&Height,&Width,NULL);
1561 if (!surf) return;
1562
1563 /*
1564 * Synchronize framebuffer contents.
1565 */
1566 if (vga_fb_window != -1)
1567 VGA_SyncWindow( TRUE );
1568
1569 /*
1570 * CGA framebuffer (160x200) - CGA_ColorComposite, special subtype of mode 6
1571 * This buffer is encoded as following:
1572 * - 4 bit pr. pixel, 2 pixels per byte
1573 * - 80 bytes per row
1574 * - Every second line has an offset of 8096
1575 */
1576 if(vga_fb_depth == 4 && vga_fb_width == 160 && vga_fb_height == 200){
1577 WORD off = 0;
1578 BYTE bits = 4;
1579 BYTE value;
1580 for(Y=0; Y<vga_fb_height; Y++, surf+=(Pitch*2)){
1581 for(X=0; X<vga_fb_width; X++){
1582 off = Y & 1 ? (8 * 1024) : 0;
1583 off += (80 * (Y/2));
1584 off += X/2;
1585 value = (dat[off] >> bits) & 0xF;
1586 surf[(X*4)+0] = value;
1587 surf[(X*4)+1] = value;
1588 surf[(X*4)+2] = value;
1589 surf[(X*4)+3] = value;
1590 surf[(X*4)+Pitch+0] = value;
1591 surf[(X*4)+Pitch+1] = value;
1592 surf[(X*4)+Pitch+2] = value;
1593 surf[(X*4)+Pitch+3] = value;
1594 bits -= 4;
1595 bits &= 7;
1596 }
1597 }
1598 }
1599
1600 /*
1601 * CGA framebuffer (320x200)
1602 * This buffer is encoded as following:
1603 * - 2 bits per color, 4 pixels per byte
1604 * - 80 bytes per row
1605 * - Every second line has an offset of 8096
1606 */
1607 else if(vga_fb_depth == 2 && vga_fb_width == 320 && vga_fb_height == 200){
1608 WORD off = 0;
1609 BYTE bits = 6;
1610 BYTE value;
1611 /* Iterate over the rows */
1612 for(Y=0; Y<vga_fb_height; Y++, surf+=(Pitch*2)){
1613 for(X=0; X<vga_fb_width; X++){
1614 off = Y & 1 ? (8 * 1024) : 0;
1615 off += (80 * (Y/2));
1616 off += X/4;
1617 value = (dat[off] >> bits) & 0x3;
1618 surf[(X*2)] = value;
1619 surf[(X*2)+1] = value;
1620 surf[(X*2)+Pitch] = value;
1621 surf[(X*2)+Pitch+1] = value;
1622 bits -= 2;
1623 bits &= 7;
1624 }
1625 }
1626 }
1627
1628 /*
1629 * Double VGA framebuffer (320x200 -> 640x400), if needed.
1630 */
1631 else if(Height >= 2 * vga_fb_height && Width >= 2 * vga_fb_width && bpp == 1)
1632 for (Y=0; Y<vga_fb_height; Y++,surf+=Pitch*2,dat+=vga_fb_pitch)
1633 for (X=0; X<vga_fb_width; X++) {
1634 BYTE value = dat[X];
1635 surf[X*2] = value;
1636 surf[X*2+1] = value;
1637 surf[X*2+Pitch] = value;
1638 surf[X*2+Pitch+1] = value;
1639 }
1640 /*
1641 * Linear Buffer, including mode 19
1642 */
1643 else
1644 for (Y=0; Y<vga_fb_height; Y++,surf+=Pitch,dat+=vga_fb_pitch)
1645 memcpy(surf, dat, vga_fb_width * bpp);
1646
1647 VGA_Unlock();
1648 }
1649
1650 static void VGA_Poll_Text(void)
1651 {
1652 char *dat, *old, *p_line;
1653 unsigned int X, Y;
1654 CHAR_INFO ch[256]; /* that should suffice for the largest text width */
1655 COORD siz, off;
1656 SMALL_RECT dest;
1657 HANDLE con = VGA_AlphaConsole();
1658 BOOL linechanged = FALSE; /* video memory area differs from stored copy? */
1659
1660 /* Synchronize cursor position. */
1661 off.X = vga_text_x;
1662 off.Y = vga_text_y;
1663 SetConsoleCursorPosition(con,off);
1664
1665 dat = VGA_AlphaBuffer();
1666 old = vga_text_old; /* pointer to stored video mem copy */
1667 siz.X = vga_text_width; siz.Y = 1;
1668 off.X = 0; off.Y = 0;
1669
1670 /* copy from virtual VGA frame buffer to console */
1671 for (Y=0; Y<vga_text_height; Y++) {
1672 linechanged = memcmp(dat, old, vga_text_width*2);
1673 if (linechanged)
1674 {
1675 /*TRACE("line %d changed\n", Y);*/
1676 p_line = dat;
1677 for (X=0; X<vga_text_width; X++) {
1678 ch[X].Char.AsciiChar = *p_line++;
1679 /* WriteConsoleOutputA doesn't like "dead" chars */
1680 if (ch[X].Char.AsciiChar == '\0')
1681 ch[X].Char.AsciiChar = ' ';
1682 ch[X].Attributes = *p_line++;
1683 }
1684 dest.Top=Y; dest.Bottom=Y;
1685 dest.Left=0; dest.Right=vga_text_width+1;
1686 WriteConsoleOutputA(con, ch, siz, off, &dest);
1687 memcpy(old, dat, vga_text_width*2);
1688 }
1689 /* advance to next text line */
1690 dat += vga_text_width*2;
1691 old += vga_text_width*2;
1692 }
1693 }
1694
1695 static void CALLBACK VGA_Poll( LPVOID arg, DWORD low, DWORD high )
1696 {
1697 EnterCriticalSection(&vga_lock);
1698
1699 if (lpddraw)
1700 VGA_Poll_Graphics();
1701 else
1702 VGA_Poll_Text();
1703
1704 /*
1705 * Fake start of retrace.
1706 */
1707 vga_retrace_vertical = TRUE;
1708
1709 LeaveCriticalSection(&vga_lock);
1710 }
1711
1712 static BYTE palreg,palcnt;
1713 static PALETTEENTRY paldat;
1714
1715 void VGA_ioport_out( WORD port, BYTE val )
1716 {
1717 switch (port) {
1718 /* General Register - Feature Control */
1719 case 0x3ba:
1720 FIXME("Unsupported VGA register: general register - feature control 0x%04x (value 0x%02x)\n", port, val);
1721 break;
1722 /* Attribute Controller - Address/Other */
1723 case 0x3c0:
1724 if (vga_address_3c0)
1725 vga_index_3c0 = val;
1726 else
1727 FIXME("Unsupported index, VGA attribute controller register 0x3c0: 0x%02x (value 0x%02x)\n",
1728 vga_index_3c0, val);
1729 vga_address_3c0 = !vga_address_3c0;
1730 break;
1731 /* General Register - Misc output */
1732 case 0x3c2:
1733 FIXME("Unsupported VGA register: general register - misc output 0x%04x (value 0x%02x)\n", port, val);
1734 break;
1735 /* General Register - Video subsystem enable */
1736 case 0x3c3:
1737 FIXME("Unsupported VGA register: general register - video subsystem enable 0x%04x (value 0x%02x)\n", port, val);
1738 break;
1739 /* Sequencer Register - Address */
1740 case 0x3c4:
1741 vga_index_3c4 = val;
1742 break;
1743 /* Sequencer Register - Other */
1744 case 0x3c5:
1745 switch(vga_index_3c4) {
1746 case 0x04: /* Sequencer: Memory Mode Register */
1747 if(vga_fb_depth == 8)
1748 VGA_SetWindowStart((val & 8) ? 0 : -1);
1749 else
1750 FIXME("Memory Mode Register not supported in this mode.\n");
1751 break;
1752 default:
1753 FIXME("Unsupported index, VGA sequencer register 0x3c4: 0x%02x (value 0x%02x)\n",
1754 vga_index_3c4, val);
1755 }
1756 break;
1757 case 0x3c8:
1758 palreg=val; palcnt=0; break;
1759 case 0x3c9:
1760 ((BYTE*)&paldat)[palcnt++]=val << 2;
1761 if (palcnt==3) {
1762 VGA_SetPalette(&paldat,palreg++,1);
1763 palcnt=0;
1764 }
1765 break;
1766 /* Graphics Controller Register - Address */
1767 case 0x3ce:
1768 vga_index_3ce = val;
1769 break;
1770 /* Graphics Controller Register - Other */
1771 case 0x3cf:
1772 FIXME("Unsupported index, VGA graphics controller register - other 0x3ce: 0x%02x (value 0x%02x)\n",
1773 vga_index_3ce, val);
1774 break;
1775 /* CRT Controller Register - Index (MDA) */
1776 case 0x3b4:
1777 /* CRT Controller Register - Index (CGA) */
1778 case 0x3d4:
1779 vga_index_3d4 = val;
1780 break;
1781 /* CRT Controller Register - Other (MDA) */
1782 case 0x3b5:
1783 /* CRT Controller Register - Other (CGA) */
1784 case 0x3d5:
1785 FIXME("Unsupported index, VGA crt controller register 0x3b4/0x3d4: 0x%02x (value 0x%02x)\n",
1786 vga_index_3d4, val);
1787 break;
1788 /* Mode control register - 6845 Motorola (MDA) */
1789 case 0x3b8:
1790 /* Mode control register - 6845 Motorola (CGA) */
1791 case 0x3d8:
1792 /*
1793 * xxxxxxx1 = 80x25 text
1794 * xxxxxxx0 = 40x25 text (default)
1795 * xxxxxx1x = graphics (320x200)
1796 * xxxxxx0x = text
1797 * xxxxx1xx = B/W
1798 * xxxxx0xx = color
1799 * xxxx1xxx = enable video signal
1800 * xxx1xxxx = 640x200 B/W graphics
1801 * xx1xxxxx = blink
1802 */
1803
1804 /* check bits 6 and 7 */
1805 if (val & 0xC0)
1806 {
1807 FIXME("Unsupported value, VGA register 0x3d8: 0x%02x - bits 7 and 6 not supported.\n", val);
1808 }
1809 /* check bits 5 - blink on */
1810 if (val & 0x20)
1811 {
1812 FIXME("Unsupported value, VGA register 0x3d8: 0x%02x (bit 5) - blink is not supported.\n", val);
1813 }
1814 /* Enable Video Signal (bit 3) - Set the enabled bit */
1815 VGA_SetEnabled((val & 0x08) != 0);
1816
1817 /* xxx1x010 - Detect 160x200, 16 color mode (CGA composite) */
1818 if( (val & 0x17) == 0x12 )
1819 {
1820 /* Switch to 160x200x4 composite mode - special case of mode 6 */
1821 CGA_ColorComposite = TRUE;
1822 VGA_SetMode(6);
1823 }
1824 else
1825 {
1826 /* turn off composite colors otherwise, including 320x200 (80x200 16 color) */
1827 CGA_ColorComposite = FALSE;
1828 }
1829
1830 /* xxx0x100 - Detect VGA mode 0 */
1831 if( (val & 0x17) == 0x04 )
1832 {
1833 VGA_SetMode(0);
1834 }
1835 /* xxx0x000 - Detect VGA mode 1 */
1836 else if( (val & 0x17) == 0x00 )
1837 {
1838 VGA_SetMode(1);
1839 }
1840 /* xxx0x101 - Detect VGA mode 2 */
1841 else if( (val & 0x17) == 0x05 )
1842 {
1843 VGA_SetMode(2);
1844 }
1845 /* xxx0x001 - Detect VGA mode 3 */
1846 else if( (val & 0x17) == 0x01 )
1847 {
1848 VGA_SetMode(3);
1849 }
1850 /* xxx0x010 - Detect VGA mode 4 */
1851 else if( (val & 0x17) == 0x02 )
1852 {
1853 VGA_SetMode(4);
1854 }
1855 /* xxx0x110 - Detect VGA mode 5 */
1856 else if( (val & 0x17) == 0x06 )
1857 {
1858 VGA_SetMode(5);
1859 }
1860 /* xxx1x110 - Detect VGA mode 6 */
1861 else if( (val & 0x17) == 0x16 )
1862 {
1863 VGA_SetMode(6);
1864 }
1865 /* unsupported mode */
1866 else
1867 {
1868 FIXME("Unsupported value, VGA register 0x3d8: 0x%02x - unrecognized MDA/CGA mode\n", val); /* Set the enabled bit */
1869 }
1870
1871 break;
1872
1873 /* Colour control register (CGA) */
1874 case 0x3d9:
1875 /* Set bright */
1876 VGA_SetBright((val & 0x10) != 0);
1877
1878 /* Set palette index */
1879 VGA_SetPaletteIndex((val & 0x20) != 0);
1880
1881 /* Now update the palette */
1882 VGA_UpdatePalette();
1883 break;
1884 default:
1885 FIXME("Unsupported VGA register: 0x%04x (value 0x%02x)\n", port, val);
1886 }
1887 }
1888
1889 BYTE VGA_ioport_in( WORD port )
1890 {
1891 BYTE ret;
1892
1893 switch (port) {
1894 /* Attribute Controller - Other */
1895 case 0x3c1:
1896 FIXME("Unsupported index, VGA attribute controller register 0x3c0: 0x%02x\n",
1897 vga_index_3c0);
1898 return 0xff;
1899 /* General Register - Input status 0 */
1900 case 0x3c2:
1901 ret=0xff;
1902 FIXME("Unsupported VGA register: general register - input status 0 0x%04x\n", port);
1903 break;
1904 /* General Register - Video subsystem enable */
1905 case 0x3c3:
1906 ret=0xff;
1907 FIXME("Unsupported VGA register: general register - video subsystem enable 0x%04x\n", port);
1908 break;
1909 /* Sequencer Register - Other */
1910 case 0x3c5:
1911 switch(vga_index_3c4) {
1912 case 0x04: /* Sequencer: Memory Mode Register */
1913 return (VGA_GetWindowStart() == -1) ? 0xf7 : 0xff;
1914 default:
1915 FIXME("Unsupported index, register 0x3c4: 0x%02x\n",
1916 vga_index_3c4);
1917 return 0xff;
1918 }
1919 /* General Register - DAC State */
1920 case 0x3c7:
1921 ret=0xff;
1922 FIXME("Unsupported VGA register: general register - DAC State 0x%04x\n", port);
1923 break;
1924 /* General Register - Feature control */
1925 case 0x3ca:
1926 ret=0xff;
1927 FIXME("Unsupported VGA register: general register - Feature control 0x%04x\n", port);
1928 break;
1929 /* General Register - Misc output */
1930 case 0x3cc:
1931 ret=0xff;
1932 FIXME("Unsupported VGA register: general register - Feature control 0x%04x\n", port);
1933 break;
1934 /* Graphics Controller Register - Other */
1935 case 0x3cf:
1936 FIXME("Unsupported index, register 0x3ce: 0x%02x\n",
1937 vga_index_3ce);
1938 return 0xff;
1939 /* CRT Controller Register - Other (MDA) */
1940 case 0x3b5:
1941 /* CRT Controller Register - Other (CGA) */
1942 case 0x3d5:
1943 FIXME("Unsupported index, VGA crt controller register 0x3b4/0x3d4: 0x%02x\n",
1944 vga_index_3d4);
1945 return 0xff;
1946 /* General Register - Input status 1 (MDA) */
1947 case 0x3ba:
1948 /* General Register - Input status 1 (CGA) */
1949 case 0x3da:
1950 /*
1951 * Read from this register resets register 0x3c0 address flip-flop.
1952 */
1953 vga_address_3c0 = TRUE;
1954
1955 /*
1956 * Read from this register returns following bits:
1957 * xxxx1xxx = Vertical retrace in progress if set.
1958 * xxxxx1xx = Light pen switched on.
1959 * xxxxxx1x = Light pen trigger set.
1960 * xxxxxxx1 = Either vertical or horizontal retrace
1961 * in progress if set.
1962 */
1963 ret = 0;
1964 if (vga_retrace_vertical)
1965 ret |= 9;
1966 if (vga_retrace_horizontal)
1967 ret |= 3;
1968
1969 /*
1970 * If VGA mode has been set, vertical retrace is
1971 * turned on once a frame and cleared after each read.
1972 * This might cause applications that synchronize with
1973 * vertical retrace to actually skip one frame but that
1974 * is probably not a problem.
1975 *
1976 * If no VGA mode has been set, vertical retrace is faked
1977 * by toggling the value after every read.
1978 */
1979 if (VGA_IsTimerRunning())
1980 vga_retrace_vertical = FALSE;
1981 else
1982 vga_retrace_vertical = !vga_retrace_vertical;
1983
1984 /*
1985 * Toggle horizontal retrace.
1986 */
1987 vga_retrace_horizontal = !vga_retrace_horizontal;
1988 break;
1989
1990 default:
1991 ret=0xff;
1992 FIXME("Unsupported VGA register: 0x%04x\n", port);
1993 }
1994 return ret;
1995 }
1996
1997 void VGA_Clean(void)
1998 {
1999 VGA_Exit();
2000 VGA_DeinstallTimer();
2001 }
Windows API implementation