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root/cebix/BasiliskII/src/video.cpp

Comparing BasiliskII/src/video.cpp (file contents):
Revision 1.14 by cebix, 2001-06-30T17:21:51Z vs.
Revision 1.20 by cebix, 2001-07-03T19:20:38Z

#	Line 40 | Line 40
40
41
42		// List of supported video modes
43	<	std::vector<video_mode> VideoModes;
43	>	vector<video_mode> VideoModes;
44
45		// Description of the main monitor
46		monitor_desc VideoMonitor;
47
48	+	// Depth code -> Apple mode mapping
49	+	uint16 apple_mode_for_depth[6];
50	+
51		// Local variables (per monitor)
52		struct {
53		monitor_desc *desc;                     // Pointer to description of monitor handled by this instance of the driver
54		uint8 palette[256 * 3];         // Color palette, 256 entries, RGB
55		bool luminance_mapping;         // Luminance mapping on/off
56		bool interrupts_enabled;        // VBL interrupts on/off
57	+	bool dm_present;                        // We received a GetVideoParameters call, so the Display Manager seems to be present
58		uint32 gamma_table;                     // Mac address of gamma table
59		int alloc_gamma_table_size;     // Allocated size of gamma table
60		uint16 current_mode;            // Currently selected depth/resolution
61		uint32 current_id;
62		uint16 preferred_mode;          // Preferred depth/resolution
63		uint32 preferred_id;
64	<	uint32 sp;                                      // Mac address of Slot Manager parameter block
64	>	uint32 slot_param;                      // Mac address of Slot Manager parameter block
65		} VidLocal;
66
67
68		/*
69	+	*  Initialize apple_mode_for_depth[] array from VideoModes list
70	+	*/
71	+
72	+	void video_init_depth_list(void)
73	+	{
74	+	uint16 mode = 0x80;
75	+	for (int depth = VDEPTH_1BIT; depth <= VDEPTH_32BIT; depth++) {
76	+	if (video_has_depth(video_depth(depth)))
77	+	apple_mode_for_depth[depth] = mode++;
78	+	else
79	+	apple_mode_for_depth[depth] = 0;
80	+	}
81	+	}
82	+
83	+
84	+	/*
85	+	*  Check whether a mode with the specified depth exists
86	+	*/
87	+
88	+	bool video_has_depth(video_depth depth)
89	+	{
90	+	vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end();
91	+	while (i != end) {
92	+	if (i->depth == depth)
93	+	return true;
94	+	++i;
95	+	}
96	+	return false;
97	+	}
98	+
99	+
100	+	/*
101		*  Check whether specified resolution ID is one of the supported resolutions
102		*/
103
104		static bool has_resolution(uint32 id)
105		{
106	<	std::vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end();
107	<	while (i != end) {
106	>	vector<video_mode>::const_iterator i, end = VideoModes.end();
107	>	for (i = VideoModes.begin(); i != end; ++i) {
108		if (i->resolution_id == id)
109		return true;
74	–	++i;
110		}
111		return false;
112		}
#	Line 81 | Line 116 | static bool has_resolution(uint32 id)
116		*  Find specified mode (depth/resolution) (or VideoModes.end() if not found)
117		*/
118
119	<	static std::vector<video_mode>::const_iterator find_mode(uint16 mode, uint32 id)
119	>	static vector<video_mode>::const_iterator find_mode(uint16 mode, uint32 id)
120		{
121	<	std::vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end();
122	<	while (i != end) {
121	>	vector<video_mode>::const_iterator i, end = VideoModes.end();
122	>	for (i = VideoModes.begin(); i != end; ++i) {
123		if (i->resolution_id == id && DepthToAppleMode(i->depth) == mode)
124		return i;
90	–	++i;
125		}
126		return i;
127		}
#	Line 100 | Line 134 | static std::vector<video_mode>::const_it
134		static video_depth max_depth_of_resolution(uint32 id)
135		{
136		video_depth m = VDEPTH_1BIT;
137	<	std::vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end();
138	<	while (i != end) {
137	>	vector<video_mode>::const_iterator i, end = VideoModes.end();
138	>	for (i = VideoModes.begin(); i != end; ++i) {
139		if (i->depth > m)
140		m = i->depth;
107	–	++i;
141		}
142		return m;
143		}
#	Line 116 | Line 149 | static video_depth max_depth_of_resoluti
149
150		static void get_size_of_resolution(uint32 id, uint32 &x, uint32 &y)
151		{
152	<	std::vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end();
153	<	while (i != end) {
152	>	vector<video_mode>::const_iterator i, end = VideoModes.end();
153	>	for (i = VideoModes.begin(); i != end; ++i) {
154		if (i->resolution_id == id) {
155		x = i->x;
156		y = i->y;
157		return;
158		}
159	<	++i;
159	>	}
160	>	x = y = 0;
161	>	}
162	>
163	>
164	>	/*
165	>	*  Get bytes-per-row value for specified resolution/depth
166	>	*/
167	>
168	>	uint32 video_bytes_per_row(video_depth depth, uint32 id)
169	>	{
170	>	vector<video_mode>::const_iterator i, end = VideoModes.end();
171	>	for (i = VideoModes.begin(); i != end; ++i) {
172	>	if (i->depth == depth && i->resolution_id == id)
173	>	return i->bytes_per_row;
174	>	}
175	>	uint32 x, y;
176	>	get_size_of_resolution(id, x, y);
177	>	return TrivialBytesPerRow(x, depth);
178	>	}
179	>
180	>
181	>	/*
182	>	*  Find palette size for given color depth
183	>	*/
184	>
185	>	static int palette_size(video_depth depth)
186	>	{
187	>	switch (depth) {
188	>	case VDEPTH_1BIT: return 2;
189	>	case VDEPTH_2BIT: return 4;
190	>	case VDEPTH_4BIT: return 16;
191	>	case VDEPTH_8BIT: return 256;
192	>	case VDEPTH_16BIT: return 32;
193	>	case VDEPTH_32BIT: return 256;
194	>	default: return 0;
195		}
196		}
197
#	Line 139 | Line 207 | static void set_gray_palette(void)
207		VidLocal.palette[i * 3 + 1] = 127;
208		VidLocal.palette[i * 3 + 2] = 127;
209		}
210	<	video_set_palette(VidLocal.palette);
210	>	video_set_palette(VidLocal.palette, 256);
211		}
212
213
#	Line 169 | Line 237 | static void load_ramp_palette(void)
237		}
238
239		int num = (VidLocal.desc->mode.depth == VDEPTH_16BIT ? 32 : 256);
172	–	int inc = 256 / num, value = 0;
240		uint8 *p = VidLocal.palette;
241		for (int i=0; i<num; i++) {
242	<	uint8 red = value, green = value, blue = value;
242	>	uint8 red = (i * 256 / num), green = red, blue = red;
243		if (have_gamma) {
244		red = red_gamma[red >> (8 - data_width)];
245		green = green_gamma[green >> (8 - data_width)];
#	Line 181 | Line 248 | static void load_ramp_palette(void)
248		*p++ = red;
249		*p++ = green;
250		*p++ = blue;
184	–	value += inc;
251		}
252
253	<	video_set_palette(VidLocal.palette);
253	>	video_set_palette(VidLocal.palette, num);
254		}
255
256
#	Line 267 | Line 333 | static bool set_gamma_table(uint32 user_
333		Mac2Mac_memcpy(table, user_table, size);
334		}
335
336	<	if (IsDirectMode(VidLocal.current_mode))
336	>	if (IsDirectMode(VidLocal.desc->mode))
337		load_ramp_palette();
338
339		return true;
#	Line 275 | Line 341 | static bool set_gamma_table(uint32 user_
341
342
343		/*
344	+	*  Switch video mode
345	+	*/
346	+
347	+	static void switch_mode(const video_mode &mode, uint32 param, uint32 dce)
348	+	{
349	+	// Switch mode
350	+	set_gray_palette();
351	+	video_switch_to_mode(mode);
352	+
353	+	// Update VidLocal
354	+	VidLocal.current_mode = DepthToAppleMode(mode.depth);
355	+	VidLocal.current_id = mode.resolution_id;
356	+
357	+	uint32 frame_base = VidLocal.desc->mac_frame_base;
358	+
359	+	M68kRegisters r;
360	+	uint32 sp = VidLocal.slot_param;
361	+	r.a[0] = sp;
362	+
363	+	// Find functional sResource for this display
364	+	WriteMacInt8(sp + spSlot, ReadMacInt8(dce + dCtlSlot));
365	+	WriteMacInt8(sp + spID, ReadMacInt8(dce + dCtlSlotId));
366	+	WriteMacInt8(sp + spExtDev, 0);
367	+	r.d[0] = 0x0016;
368	+	Execute68kTrap(0xa06e, &r);     // SRsrcInfo()
369	+	uint32 rsrc = ReadMacInt32(sp + spPointer);
370	+
371	+	// Patch minorBase (otherwise rebooting won't work)
372	+	WriteMacInt8(sp + spID, 0x0a); // minorBase
373	+	r.d[0] = 0x0006;
374	+	Execute68kTrap(0xa06e, &r); // SFindStruct()
375	+	uint32 minor_base = ReadMacInt32(sp + spPointer) - ROMBaseMac;
376	+	ROMBaseHost[minor_base + 0] = frame_base >> 24;
377	+	ROMBaseHost[minor_base + 1] = frame_base >> 16;
378	+	ROMBaseHost[minor_base + 2] = frame_base >> 8;
379	+	ROMBaseHost[minor_base + 3] = frame_base;
380	+
381	+	// Patch video mode parameter table
382	+	WriteMacInt32(sp + spPointer, rsrc);
383	+	WriteMacInt8(sp + spID, DepthToAppleMode(mode.depth));
384	+	r.d[0] = 0x0006;
385	+	Execute68kTrap(0xa06e, &r); // SFindStruct()
386	+	WriteMacInt8(sp + spID, 0x01);
387	+	r.d[0] = 0x0006;
388	+	Execute68kTrap(0xa06e, &r); // SFindStruct()
389	+	uint32 p = ReadMacInt32(sp + spPointer) - ROMBaseMac;
390	+	ROMBaseHost[p +  8] = mode.bytes_per_row >> 8;
391	+	ROMBaseHost[p +  9] = mode.bytes_per_row;
392	+	ROMBaseHost[p + 14] = mode.y >> 8;
393	+	ROMBaseHost[p + 15] = mode.y;
394	+	ROMBaseHost[p + 16] = mode.x >> 8;
395	+	ROMBaseHost[p + 17] = mode.x;
396	+
397	+	// Recalculate slot ROM checksum
398	+	ChecksumSlotROM();
399	+
400	+	// Update sResource
401	+	WriteMacInt8(sp + spID, ReadMacInt8(dce + dCtlSlotId));
402	+	r.d[0] = 0x002b;
403	+	Execute68kTrap(0xa06e, &r); // SUpdateSRT()
404	+
405	+	// Update frame buffer base in DCE and param block
406	+	WriteMacInt32(dce + dCtlDevBase, frame_base);
407	+	WriteMacInt32(param + csBaseAddr, frame_base);
408	+
409	+	// Patch frame buffer base address for MacOS versions <7.6
410	+	if (!VidLocal.dm_present) { // Only do this when no Display Manager seems to be present; otherwise, the screen will not get redrawn
411	+	WriteMacInt32(0x824, frame_base);                       // ScrnBase
412	+	uint32 gdev = ReadMacInt32(0x8a4);                      // MainDevice
413	+	gdev = ReadMacInt32(gdev);
414	+	uint32 pmap = ReadMacInt32(gdev + 0x16);        // gdPMap
415	+	pmap = ReadMacInt32(pmap);
416	+	WriteMacInt32(pmap, frame_base);                        // baseAddr
417	+	}
418	+	}
419	+
420	+
421	+	/*
422		*  Driver Open() routine
423		*/
424
#	Line 294 | Line 438 | int16 VideoDriverOpen(uint32 pb, uint32
438		VidLocal.current_id = VidLocal.desc->mode.resolution_id;
439		VidLocal.preferred_mode = VidLocal.current_mode;
440		VidLocal.preferred_id = VidLocal.current_id;
441	+	VidLocal.dm_present = false;
442
443		// Allocate Slot Manager parameter block in Mac RAM
444		M68kRegisters r;
#	Line 301 | Line 446 | int16 VideoDriverOpen(uint32 pb, uint32
446		Execute68kTrap(0xa71e, &r);     // NewPtrSysClear()
447		if (r.a[0] == 0)
448		return memFullErr;
449	<	VidLocal.sp = r.a[0];
450	<	D(bug("SPBlock at %08x\n", VidLocal.sp));
449	>	VidLocal.slot_param = r.a[0];
450	>	D(bug("SPBlock at %08x\n", VidLocal.slot_param));
451
452		// Find and set default gamma table
453		VidLocal.gamma_table = 0;
#	Line 337 | Line 482 | int16 VideoDriverControl(uint32 pb, uint
482		return paramErr;
483
484		if (mode != VidLocal.current_mode) {
485	<	std::vector<video_mode>::const_iterator i = find_mode(mode, VidLocal.current_id);
485	>	vector<video_mode>::const_iterator i = find_mode(mode, VidLocal.current_id);
486		if (i == VideoModes.end())
487		return paramErr;
488	<	set_gray_palette();
344	<	video_switch_to_mode(*i);
345	<	VidLocal.current_mode = mode;
346	<	WriteMacInt32(param + csBaseAddr, VidLocal.desc->mac_frame_base);
347	<	WriteMacInt32(dce + dCtlDevBase, VidLocal.desc->mac_frame_base);
488	>	switch_mode(*i, param, dce);
489		}
490		D(bug("  base %08x\n", VidLocal.desc->mac_frame_base));
491		return noErr;
#	Line 353 | Line 494 | int16 VideoDriverControl(uint32 pb, uint
494		case cscSetEntries:             // Set palette
495		case cscDirectSetEntries: {
496		D(bug(" (Direct)SetEntries table %08x, count %d, start %d\n", ReadMacInt32(param + csTable), ReadMacInt16(param + csCount), ReadMacInt16(param + csStart)));
497	<	bool is_direct = IsDirectMode(VidLocal.current_mode);
497	>	bool is_direct = IsDirectMode(VidLocal.desc->mode);
498		if (code == cscSetEntries && is_direct)
499		return controlErr;
500		if (code == cscDirectSetEntries && !is_direct)
#	Line 425 | Line 566 | int16 VideoDriverControl(uint32 pb, uint
566		s_pal += 8;
567		}
568		}
569	<	video_set_palette(VidLocal.palette);
569	>	video_set_palette(VidLocal.palette, palette_size(VidLocal.desc->mode.depth));
570		return noErr;
571		}
572
#	Line 448 | Line 589 | int16 VideoDriverControl(uint32 pb, uint
589		0xffff0000,             // 16 bpp
590		0xffffffff              // 32 bpp
591		};
592	<	uint32 p = VidLocal.desc->mac_frame_base;
592	>	uint32 frame_base = VidLocal.desc->mac_frame_base;
593		uint32 pat = pattern[VidLocal.desc->mode.depth];
594		bool invert = (VidLocal.desc->mode.depth == VDEPTH_32BIT);
595		for (uint32 y=0; y<VidLocal.desc->mode.y; y++) {
596		for (uint32 x=0; x<VidLocal.desc->mode.bytes_per_row; x+=4) {
597	<	WriteMacInt32(p + x, pat);
597	>	WriteMacInt32(frame_base + x, pat);
598		if (invert)
599		pat = ~pat;
600		}
601	<	p += VidLocal.desc->mode.bytes_per_row;
601	>	frame_base += VidLocal.desc->mode.bytes_per_row;
602		pat = ~pat;
603		}
604
605	<	if (IsDirectMode(VidLocal.current_mode))
605	>	if (IsDirectMode(VidLocal.desc->mode))
606		load_ramp_palette();
607
608		return noErr;
#	Line 496 | Line 637 | int16 VideoDriverControl(uint32 pb, uint
637		return paramErr;
638
639		if (mode != VidLocal.current_mode || id != VidLocal.current_id) {
640	<	std::vector<video_mode>::const_iterator i = find_mode(mode, id);
640	>	vector<video_mode>::const_iterator i = find_mode(mode, id);
641		if (i == VideoModes.end())
642		return paramErr;
643	<	set_gray_palette();
503	<	video_switch_to_mode(*i);
504	<	VidLocal.current_mode = mode;
505	<	VidLocal.current_id = id;
506	<	uint32 frame_base = VidLocal.desc->mac_frame_base;
507	<	WriteMacInt32(param + csBaseAddr, frame_base);
508	<
509	<	M68kRegisters r;
510	<	uint32 sp = VidLocal.sp;
511	<	r.a[0] = sp;
512	<
513	<	// Find functional sResource for this display
514	<	WriteMacInt8(sp + spSlot, ReadMacInt8(dce + dCtlSlot));
515	<	WriteMacInt8(sp + spID, ReadMacInt8(dce + dCtlSlotId));
516	<	WriteMacInt8(sp + spExtDev, 0);
517	<	r.d[0] = 0x0016;
518	<	Execute68kTrap(0xa06e, &r);     // SRsrcInfo()
519	<	uint32 rsrc = ReadMacInt32(sp + spPointer);
520	<
521	<	// Patch minorBase (otherwise rebooting won't work)
522	<	WriteMacInt8(sp + spID, 0x0a); // minorBase
523	<	r.d[0] = 0x0006;
524	<	Execute68kTrap(0xa06e, &r); // SFindStruct()
525	<	uint32 minor_base = ReadMacInt32(sp + spPointer) - ROMBaseMac;
526	<	ROMBaseHost[minor_base + 0] = frame_base >> 24;
527	<	ROMBaseHost[minor_base + 1] = frame_base >> 16;
528	<	ROMBaseHost[minor_base + 2] = frame_base >> 8;
529	<	ROMBaseHost[minor_base + 3] = frame_base;
530	<
531	<	// Patch video mode parameter table
532	<	WriteMacInt32(sp + spPointer, rsrc);
533	<	WriteMacInt8(sp + spID, mode);
534	<	r.d[0] = 0x0006;
535	<	Execute68kTrap(0xa06e, &r); // SFindStruct()
536	<	WriteMacInt8(sp + spID, 0x01);
537	<	r.d[0] = 0x0006;
538	<	Execute68kTrap(0xa06e, &r); // SFindStruct()
539	<	uint32 p = ReadMacInt32(sp + spPointer) - ROMBaseMac;
540	<	ROMBaseHost[p +  8] = i->bytes_per_row >> 8;
541	<	ROMBaseHost[p +  9] = i->bytes_per_row;
542	<	ROMBaseHost[p + 14] = i->y >> 8;
543	<	ROMBaseHost[p + 15] = i->y;
544	<	ROMBaseHost[p + 16] = i->x >> 8;
545	<	ROMBaseHost[p + 17] = i->x;
546	<
547	<	// Recalculate slot ROM checksum
548	<	ChecksumSlotROM();
549	<
550	<	// Update sResource
551	<	WriteMacInt8(sp + spID, ReadMacInt8(dce + dCtlSlotId));
552	<	r.d[0] = 0x002b;
553	<	Execute68kTrap(0xa06e, &r); // SUpdateSRT()
554	<
555	<	// Update frame buffer base in DCE
556	<	WriteMacInt32(dce + dCtlDevBase, frame_base);
643	>	switch_mode(*i, param, dce);
644		}
645		D(bug("  base %08x\n", VidLocal.desc->mac_frame_base));
646		return noErr;
#	Line 752 | Line 839 | int16 VideoDriverStatus(uint32 pb, uint3
839		uint32 id = ReadMacInt32(param + csDisplayModeID);
840		uint16 mode = ReadMacInt16(param + csDepthMode);
841		D(bug(" GetVideoParameters %04x/%08x\n", mode, id));
842	+	VidLocal.dm_present = true;     // Display Manager seems to be present
843
844	<	std::vector<video_mode>::const_iterator i = VideoModes.begin(), end = VideoModes.end();
845	<	while (i != end) {
844	>	vector<video_mode>::const_iterator i, end = VideoModes.end();
845	>	for (i = VideoModes.begin(); i != end; ++i) {
846		if (DepthToAppleMode(i->depth) == mode && i->resolution_id == id) {
847		uint32 vp = ReadMacInt32(param + csVPBlockPtr);
848		WriteMacInt32(vp + vpBaseOffset, 0);
#	Line 809 | Line 897 | int16 VideoDriverStatus(uint32 pb, uint3
897		WriteMacInt32(param + csDeviceType, dev_type);
898		return noErr;
899		}
812	–	++i;
900		}
901		return paramErr; // specified resolution/depth not supported
902		}

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