[ViewVC] Diff of: cebix/BasiliskII/src/Unix/video

Comparing BasiliskII/src/Unix/video_blit.cpp (file contents):
Revision 1.1 by gbeauche, 2001-01-28T14:05:19Z vs.
Revision 1.16 by gbeauche, 2005-01-30T21:42:14Z

#	Line 1 \| Line 1
1		/*
2		* video_blit.cpp - Video/graphics emulation, blitters
3		*
4	<	* Basilisk II (C) 1997-2001 Christian Bauer
4	>	* Basilisk II (C) 1997-2005 Christian Bauer
5		*
6		* This program is free software; you can redistribute it and/or modify
7		* it under the terms of the GNU General Public License as published by
#	Line 19 \| Line 19
19		*/
20
21		#include "sysdeps.h"
22	+	#include "video.h"
23	+	#include "video_blit.h"
24
25		#include <stdio.h>
26		#include <stdlib.h>
25	–	#include <X11/Xlib.h>
26	–	#include <X11/Xutil.h>
27
28	–	#ifdef ENABLE_VOSF
28		// Format of the target visual
30	–	struct VisualFormat {
31	–	int depth; // Screen depth
32	–	uint32 Rmask, Gmask, Bmask; // RGB mask values
33	–	uint32 Rshift, Gshift, Bshift; // RGB shift values
34	–	};
29		static VisualFormat visualFormat;
30
31	+	// This holds the pixels values of the palette colors for 8->16/32-bit expansion
32	+	uint32 ExpandMap[256];
33	+
34	+	// Mark video_blit.h for specialization
35	+	#define DEFINE_VIDEO_BLITTERS 1
36	+
37		/* -------------------------------------------------------------------------- */
38		/* --- Raw Copy / No conversion required --- */
39		/* -------------------------------------------------------------------------- */
#	Line 60 \| Line 60 \| *static void Blit_Copy_Raw(uint8 dest,**
60		#define FB_BLIT_2(dst, src) \
61		(dst = (((src) >> 8) & 0x00ff00ff) \| (((src) & 0x00ff00ff) << 8))
62
63	+	#define FB_BLIT_4(dst, src) \
64	+	(dst = (((src) >> 8) & UVAL64(0x00ff00ff00ff00ff)) \| \
65	+	(((src) & UVAL64(0x00ff00ff00ff00ff)) << 8))
66	+
67		#define FB_DEPTH 15
68		#include "video_blit.h"
69
#	Line 67 \| Line 71 \| *static void Blit_Copy_Raw(uint8 dest,**
71		/* --- BGR 555 --- */
72		/* -------------------------------------------------------------------------- */
73
74	<	// TODO: BGR 555 (SGI/Irix)
75	<	// R/G/B mask values: 0x001f, 0x03e0, 0x7c00
74	>	#ifdef WORDS_BIGENDIAN
75	>
76	>	// Native byte order
77	>
78	>	#define FB_BLIT_1(dst, src) \
79	>	(dst = (((src) >> 10) & 0x001f) \| ((src) & 0x03e0) \| (((src) << 10) & 0x7c00))
80	>
81	>	#define FB_BLIT_2(dst, src) \
82	>	(dst = (((src) >> 10) & 0x001f001f) \| ((src) & 0x03e003e0) \| (((src) << 10) & 0x7c007c00))
83	>
84	>	#define FB_BLIT_4(dst, src) \
85	>	(dst = (((src) >> 10) & UVAL64(0x001f001f001f001f)) \| \
86	>	( (src) & UVAL64(0x03e003e003e003e0)) \| \
87	>	(((src) << 10) & UVAL64(0x7c007c007c007c00)))
88	>
89	>	#define FB_DEPTH 15
90	>	#define FB_FUNC_NAME Blit_BGR555_NBO
91	>	#include "video_blit.h"
92	>
93	>	// Opposite byte order (untested)
94	>
95	>	#define FB_BLIT_1(dst, src) \
96	>	(dst = (((src) >> 2) & 0x1f00) \| (((src) >> 8) & 3) \| (((src) << 8) & 0xe000) \| (((src) << 2) & 0x7c))
97	>
98	>	#define FB_BLIT_2(dst, src) \
99	>	(dst = (((src) >> 2) & 0x1f001f00) \| (((src) >> 8) & 0x30003) \| (((src) << 8) & 0xe000e000) \| (((src) << 2) & 0x7c007c))
100	>
101	>	#define FB_BLIT_4(dst, src) \
102	>	(dst = (((src) >> 2) & UVAL64(0x1f001f001f001f00)) \| \
103	>	(((src) >> 8) & UVAL64(0x0003000300030003)) \| \
104	>	(((src) << 8) & UVAL64(0xe000e000e000e000)) \| \
105	>	(((src) << 2) & UVAL64(0x007c007c007c007c)))
106	>
107	>	#define FB_DEPTH 15
108	>	#define FB_FUNC_NAME Blit_BGR555_OBO
109	>	#include "video_blit.h"
110	>
111	>	#else
112	>
113	>	// Native byte order (untested)
114	>
115	>	#define FB_BLIT_1(dst, src) \
116	>	(dst = (((src) >> 2) & 0x1f) \| (((src) >> 8) & 0xe0) \| (((src) << 8) & 0x0300) \| (((src) << 2) & 0x7c00))
117	>
118	>	#define FB_BLIT_2(dst, src) \
119	>	(dst = (((src) >> 2) & 0x1f001f) \| (((src) >> 8) & 0xe000e0) \| (((src) << 8) & 0x03000300) \| (((src) << 2) & 0x7c007c00))
120	>
121	>	#define FB_BLIT_4(dst, src) \
122	>	(dst = (((src) >> 2) & UVAL64(0x001f001f001f001f)) \| \
123	>	(((src) >> 8) & UVAL64(0x00e000e000e000e0)) \| \
124	>	(((src) << 8) & UVAL64(0x0300030003000300)) \| \
125	>	(((src) << 2) & UVAL64(0x7c007c007c007c00)))
126	>
127	>	#define FB_DEPTH 15
128	>	#define FB_FUNC_NAME Blit_BGR555_NBO
129	>	#include "video_blit.h"
130	>
131	>	// Opposite byte order (untested)
132	>
133	>	#define FB_BLIT_1(dst, src) \
134	>	(dst = (((src) << 6) & 0x1f00) \| ((src) & 0xe003) \| (((src) >> 6) & 0x7c))
135	>
136	>	#define FB_BLIT_2(dst, src) \
137	>	(dst = (((src) << 6) & 0x1f001f00) \| ((src) & 0xe003e003) \| (((src) >> 6) & 0x7c007c))
138	>
139	>	#define FB_BLIT_4(dst, src) \
140	>	(dst = (((src) << 6) & UVAL64(0x1f001f001f001f00)) \| \
141	>	( (src) & UVAL64(0xe003e003e003e003)) \| \
142	>	(((src) >> 6) & UVAL64(0x007c007c007c007c)))
143	>
144	>	#define FB_DEPTH 15
145	>	#define FB_FUNC_NAME Blit_BGR555_OBO
146	>	#include "video_blit.h"
147	>
148	>	#endif
149
150		/* -------------------------------------------------------------------------- */
151		/* --- RGB 565 --- */
#	Line 84 \| Line 161 \| *static void Blit_Copy_Raw(uint8 dest,**
161		#define FB_BLIT_2(dst, src) \
162		(dst = (((src) & 0x001f001f) \| (((src) << 1) & 0xffc0ffc0)))
163
164	+	#define FB_BLIT_4(dst, src) \
165	+	(dst = (((src) & UVAL64(0x001f001f001f001f)) \| \
166	+	(((src) << 1) & UVAL64(0xffc0ffc0ffc0ffc0))))
167	+
168		#define FB_DEPTH 16
169		#define FB_FUNC_NAME Blit_RGB565_NBO
170		#include "video_blit.h"
#	Line 96 \| Line 177 \| *static void Blit_Copy_Raw(uint8 dest,**
177		#define FB_BLIT_2(dst, src) \
178		(dst = ((((src) >> 7) & 0x00ff00ff) \| (((src) << 9) & 0xc000c000) \| (((src) << 8) & 0x1f001f00)))
179
180	+	#define FB_BLIT_4(dst, src) \
181	+	(dst = (((src) >> 7) & UVAL64(0x00ff00ff00ff00ff)) \| \
182	+	(((src) << 9) & UVAL64(0xc000c000c000c000)) \| \
183	+	(((src) << 8) & UVAL64(0x1f001f001f001f00)))
184	+
185		#define FB_DEPTH 16
186		#define FB_FUNC_NAME Blit_RGB565_OBO
187		#include "video_blit.h"
#	Line 107 \| Line 193 \| *static void Blit_Copy_Raw(uint8 dest,**
193		#define FB_BLIT_1(dst, src) \
194		(dst = (((src) >> 8) & 0x001f) \| (((src) << 9) & 0xfe00) \| (((src) >> 7) & 0x01c0))
195
110	–	// gb-- Disabled because I don't see any improvement
111	–	#if 0 && defined(__i386__) && defined(X86_ASSEMBLY)
112	–
113	–	#define FB_BLIT_2(dst, src) \
114	–	__asm__ ( "movl %0,%%ebx\n\t" \
115	–	"movl %0,%%ebp\n\t" \
116	–	"andl $0x1f001f00,%%ebx\n\t" \
117	–	"andl $0x007f007f,%0\n\t" \
118	–	"andl $0xe000e000,%%ebp\n\t" \
119	–	"shrl $8,%%ebx\n\t" \
120	–	"shrl $7,%%ebp\n\t" \
121	–	"shll $9,%0\n\t" \
122	–	"orl %%ebx,%%ebp\n\t" \
123	–	"orl %%ebp,%0\n\t" \
124	–	: "=r" (dst) : "0" (src) : "ebx", "ebp", "cc" )
125	–
126	–	#else
127	–
196		#define FB_BLIT_2(dst, src) \
197		(dst = (((src) >> 8) & 0x001f001f) \| (((src) << 9) & 0xfe00fe00) \| (((src) >> 7) & 0x01c001c0))
198
199	<	#endif
199	>	#define FB_BLIT_4(dst, src) \
200	>	(dst = (((src) >> 8) & UVAL64(0x001f001f001f001f)) \| \
201	>	(((src) << 9) & UVAL64(0xfe00fe00fe00fe00)) \| \
202	>	(((src) >> 7) & UVAL64(0x01c001c001c001c0)))
203
204		#define FB_DEPTH 16
205		#define FB_FUNC_NAME Blit_RGB565_NBO
#	Line 142 \| Line 213 \| *static void Blit_Copy_Raw(uint8 dest,**
213		#define FB_BLIT_2(dst, src) \
214		(dst = (((src) & 0x1f001f00) \| (((src) << 1) & 0xe0fee0fe) \| (((src) >> 15) & 0x10001)))
215
216	+	#define FB_BLIT_4(dst, src) \
217	+	(dst = (((src) & UVAL64(0x1f001f001f001f00)) \| \
218	+	(((src) << 1) & UVAL64(0xe0fee0fee0fee0fe)) \| \
219	+	(((src) >> 15) & UVAL64(0x0001000100010001))))
220	+
221		#define FB_DEPTH 16
222		#define FB_FUNC_NAME Blit_RGB565_OBO
223		#include "video_blit.h"
#	Line 161 \| Line 237 \| *static void Blit_Copy_Raw(uint8 dest,**
237		#define FB_BLIT_2(dst, src) \
238		(dst = (((src) >> 24) & 0xff) \| (((src) >> 8) & 0xff00) \| (((src) & 0xff00) << 8) \| (((src) & 0xff) << 24))
239
240	+	#define FB_BLIT_4(dst, src) \
241	+	(dst = (((src) >> 24) & UVAL64(0x000000ff000000ff)) \| \
242	+	(((src) >> 8) & UVAL64(0x0000ff000000ff00)) \| \
243	+	(((src) & UVAL64(0x0000ff000000ff00)) << 8) \| \
244	+	(((src) & UVAL64(0x000000ff000000ff)) << 24))
245	+
246		#define FB_DEPTH 24
247		#include "video_blit.h"
248
#	Line 168 \| Line 250 \| *static void Blit_Copy_Raw(uint8 dest,**
250		/* --- BGR 888 --- */
251		/* -------------------------------------------------------------------------- */
252
253	<	// Native byte order (untested)
253	>	// Native byte order [BE] (untested)
254
255		#ifdef WORDS_BIGENDIAN
256
257		#define FB_BLIT_2(dst, src) \
258		(dst = (((src) >> 16) & 0xff) \| ((src) & 0xff00) \| (((src) & 0xff) << 16))
259
260	+	#define FB_BLIT_4(dst, src) \
261	+	(dst = (((src) >> 16) & UVAL64(0x000000ff000000ff)) \| \
262	+	( (src) & UVAL64(0x0000ff000000ff00)) \| \
263	+	(((src) & UVAL64(0x000000ff000000ff)) << 16))
264	+
265		#define FB_FUNC_NAME Blit_BGR888_NBO
266		#define FB_DEPTH 24
267		#include "video_blit.h"
268
269		#else
270
271	+	// Opposite byte order [LE] (untested)
272	+
273		#define FB_BLIT_2(dst, src) \
274		(dst = (((src) >> 16) & 0xff) \| ((src) & 0xff0000) \| (((src) & 0xff) << 16))
275
276	+	#define FB_BLIT_4(dst, src) \
277	+	(dst = (((src) >> 16) & UVAL64(0x000000ff000000ff)) \| \
278	+	( (src) & UVAL64(0x00ff000000ff0000)) \| \
279	+	(((src) & UVAL64(0x000000ff000000ff)) << 16))
280	+
281		#define FB_FUNC_NAME Blit_BGR888_OBO
282		#define FB_DEPTH 24
283		#include "video_blit.h"
284
285		#endif
286
287	<	// Opposite byte order (untested)
287	>	// Opposite byte order [BE] (untested) / Native byte order [LE] (untested)
288
289		#ifdef WORDS_BIGENDIAN
290		# define FB_FUNC_NAME Blit_BGR888_OBO
#	Line 201 \| Line 295 \| *static void Blit_Copy_Raw(uint8 dest,**
295		#define FB_BLIT_2(dst, src) \
296		(dst = ((src) & 0xff00ff) \| (((src) & 0xff00) << 16))
297
298	+	#define FB_BLIT_4(dst, src) \
299	+	(dst = ((src) & UVAL64(0x00ff00ff00ff00ff)) \| (((src) & UVAL64(0x0000ff000000ff00)) << 16))
300	+
301		#define FB_DEPTH 24
302		#include "video_blit.h"
303
304		/* -------------------------------------------------------------------------- */
305	+	/* --- 1/2/4-bit indexed to 8-bit mode conversion --- */
306	+	/* -------------------------------------------------------------------------- */
307	+
308	+	static void Blit_Expand_1_To_8(uint8 * dest, const uint8 * p, uint32 length)
309	+	{
310	+	uint8 q = (uint8 )dest;
311	+	for (uint32 i=0; i<length; i++) {
312	+	uint8 c = *p++;
313	+	*q++ = c >> 7;
314	+	*q++ = (c >> 6) & 1;
315	+	*q++ = (c >> 5) & 1;
316	+	*q++ = (c >> 4) & 1;
317	+	*q++ = (c >> 3) & 1;
318	+	*q++ = (c >> 2) & 1;
319	+	*q++ = (c >> 1) & 1;
320	+	*q++ = c & 1;
321	+	}
322	+	}
323	+
324	+	static void Blit_Expand_2_To_8(uint8 * dest, const uint8 * p, uint32 length)
325	+	{
326	+	uint8 q = (uint8 )dest;
327	+	for (uint32 i=0; i<length; i++) {
328	+	uint8 c = *p++;
329	+	*q++ = c >> 6;
330	+	*q++ = (c >> 4) & 3;
331	+	*q++ = (c >> 2) & 3;
332	+	*q++ = c & 3;
333	+	}
334	+	}
335	+
336	+	static void Blit_Expand_4_To_8(uint8 * dest, const uint8 * p, uint32 length)
337	+	{
338	+	uint8 q = (uint8 )dest;
339	+	for (uint32 i=0; i<length; i++) {
340	+	uint8 c = *p++;
341	+	*q++ = c >> 4;
342	+	*q++ = c & 0x0f;
343	+	}
344	+	}
345	+
346	+	/* -------------------------------------------------------------------------- */
347	+	/* --- 2/4/8-bit indexed to 16-bit mode color expansion --- */
348	+	/* -------------------------------------------------------------------------- */
349	+
350	+	static void Blit_Expand_2_To_16(uint8 * dest, const uint8 * p, uint32 length)
351	+	{
352	+	uint16 q = (uint16 )dest;
353	+	for (uint32 i=0; i<length; i++) {
354	+	uint8 c = *p++;
355	+	*q++ = ExpandMap[c >> 6];
356	+	*q++ = ExpandMap[c >> 4];
357	+	*q++ = ExpandMap[c >> 2];
358	+	*q++ = ExpandMap[c];
359	+	}
360	+	}
361	+
362	+	static void Blit_Expand_4_To_16(uint8 * dest, const uint8 * p, uint32 length)
363	+	{
364	+	uint16 q = (uint16 )dest;
365	+	for (uint32 i=0; i<length; i++) {
366	+	uint8 c = *p++;
367	+	*q++ = ExpandMap[c >> 4];
368	+	*q++ = ExpandMap[c];
369	+	}
370	+	}
371	+
372	+	static void Blit_Expand_8_To_16(uint8 * dest, const uint8 * p, uint32 length)
373	+	{
374	+	uint16 q = (uint16 )dest;
375	+	for (uint32 i=0; i<length; i++)
376	+	q++ = ExpandMap[p++];
377	+	}
378	+
379	+	/* -------------------------------------------------------------------------- */
380	+	/* --- 2/4/8-bit indexed to 32-bit mode color expansion --- */
381	+	/* -------------------------------------------------------------------------- */
382	+
383	+	static void Blit_Expand_2_To_32(uint8 * dest, const uint8 * p, uint32 length)
384	+	{
385	+	uint32 q = (uint32 )dest;
386	+	for (uint32 i=0; i<length; i++) {
387	+	uint8 c = *p++;
388	+	*q++ = ExpandMap[c >> 6];
389	+	*q++ = ExpandMap[c >> 4];
390	+	*q++ = ExpandMap[c >> 2];
391	+	*q++ = ExpandMap[c];
392	+	}
393	+	}
394	+
395	+	static void Blit_Expand_4_To_32(uint8 * dest, const uint8 * p, uint32 length)
396	+	{
397	+	uint32 q = (uint32 )dest;
398	+	for (uint32 i=0; i<length; i++) {
399	+	uint8 c = *p++;
400	+	*q++ = ExpandMap[c >> 4];
401	+	*q++ = ExpandMap[c];
402	+	}
403	+	}
404	+
405	+	static void Blit_Expand_8_To_32(uint8 * dest, const uint8 * p, uint32 length)
406	+	{
407	+	uint32 q = (uint32 )dest;
408	+	for (uint32 i=0; i<length; i++)
409	+	q++ = ExpandMap[p++];
410	+	}
411	+
412	+	/* -------------------------------------------------------------------------- */
413		/* --- Blitters to the host frame buffer, or XImage buffer --- */
414		/* -------------------------------------------------------------------------- */
415
#	Line 229 \| Line 434 \| static Screen_blit_func_info Screen_blit
434		{ 1, 0x000000, 0x000000, 0x000000, Blit_Copy_Raw , Blit_Copy_Raw }, // NT
435		{ 8, 0x000000, 0x000000, 0x000000, Blit_Copy_Raw , Blit_Copy_Raw }, // OK (NBO)
436		{ 15, 0x007c00, 0x0003e0, 0x00001f, Blit_Copy_Raw , Blit_RGB555_OBO }, // OK (OBO)
437	+	{ 15, 0x00001f, 0x0003e0, 0x007c00, Blit_BGR555_NBO , Blit_BGR555_OBO }, // NT
438	+	{ 16, 0x007c00, 0x0003e0, 0x00001f, Blit_Copy_Raw , Blit_RGB555_OBO }, // OK (OBO)
439		{ 16, 0x00f800, 0x0007e0, 0x00001f, Blit_RGB565_NBO , Blit_RGB565_OBO }, // OK (OBO)
440		{ 24, 0xff0000, 0x00ff00, 0x0000ff, Blit_Copy_Raw , Blit_RGB888_OBO }, // OK (OBO)
441		{ 24, 0x0000ff, 0x00ff00, 0xff0000, Blit_BGR888_NBO , Blit_BGR888_OBO }, // NT
442	<	{ 32, 0xff0000, 0x00ff00, 0x0000ff, Blit_Copy_Raw , Blit_RGB888_OBO }, // OK (OBO)
443	<	{ 32, 0x0000ff, 0x00ff00, 0xff0000, Blit_BGR888_NBO , Blit_BGR888_OBO } // NT
442	>	{ 32, 0xff0000, 0x00ff00, 0x0000ff, Blit_Copy_Raw , Blit_RGB888_OBO }, // OK
443	>	{ 32, 0x0000ff, 0x00ff00, 0xff0000, Blit_BGR888_NBO , Blit_BGR888_OBO } // OK
444		#else
445		{ 1, 0x000000, 0x000000, 0x000000, Blit_Copy_Raw , Blit_Copy_Raw }, // NT
446		{ 8, 0x000000, 0x000000, 0x000000, Blit_Copy_Raw , Blit_Copy_Raw }, // OK (NBO)
447		{ 15, 0x007c00, 0x0003e0, 0x00001f, Blit_RGB555_NBO , Blit_Copy_Raw }, // OK (NBO)
448	+	{ 15, 0x00001f, 0x0003e0, 0x007c00, Blit_BGR555_NBO , Blit_BGR555_OBO }, // NT
449	+	{ 16, 0x007c00, 0x0003e0, 0x00001f, Blit_RGB555_NBO , Blit_Copy_Raw }, // OK (NBO)
450		{ 16, 0x00f800, 0x0007e0, 0x00001f, Blit_RGB565_NBO , Blit_RGB565_OBO }, // OK (NBO)
451		{ 24, 0xff0000, 0x00ff00, 0x0000ff, Blit_RGB888_NBO , Blit_Copy_Raw }, // OK (NBO)
452		{ 24, 0x0000ff, 0x00ff00, 0xff0000, Blit_BGR888_NBO , Blit_BGR888_OBO }, // NT
#	Line 249 \| Line 458 \| static Screen_blit_func_info Screen_blit
458		// Initialize the framebuffer update function
459		// Returns FALSE, if the function was to be reduced to a simple memcpy()
460		// --> In that case, VOSF is not necessary
461	<	bool Screen_blitter_init(XVisualInfo * visual_info, bool native_byte_order)
461	>	bool Screen_blitter_init(VisualFormat const & visual_format, bool native_byte_order, int mac_depth)
462		{
463	<	visualFormat.depth = visual_info->depth;
464	<	visualFormat.Rmask = visual_info->red_mask;
465	<	visualFormat.Gmask = visual_info->green_mask;
466	<	visualFormat.Bmask = visual_info->blue_mask;
467	<
468	<	// Compute RGB shift values
469	<	visualFormat.Rshift = 0;
470	<	for (uint32 Rmask = visualFormat.Rmask; Rmask && ((Rmask & 1) != 1); Rmask >>= 1)
471	<	++visualFormat.Rshift;
472	<	visualFormat.Gshift = 0;
473	<	for (uint32 Gmask = visualFormat.Gmask; Gmask && ((Gmask & 1) != 1); Gmask >>= 1)
474	<	++visualFormat.Gshift;
475	<	visualFormat.Bshift = 0;
476	<	for (uint32 Bmask = visualFormat.Bmask; Bmask && ((Bmask & 1) != 1); Bmask >>= 1)
477	<	++visualFormat.Bshift;
463	>	#if USE_SDL_VIDEO
464	>	const bool use_sdl_video = true;
465	>	#else
466	>	const bool use_sdl_video = false;
467	>	#endif
468	>	#if REAL_ADDRESSING \|\| DIRECT_ADDRESSING
469	>	if (!use_sdl_video && mac_depth == 1) {
470	>
471	>	// 1-bit mode uses a 1-bit X image, so there's no need for special blitting routines
472	>	Screen_blit = Blit_Copy_Raw;
473	>
474	>	} else {
475	>
476	>	// Compute RGB shift values
477	>	visualFormat = visual_format;
478	>	visualFormat.Rshift = 0;
479	>	for (uint32 Rmask = visualFormat.Rmask; Rmask && ((Rmask & 1) != 1); Rmask >>= 1)
480	>	++visualFormat.Rshift;
481	>	visualFormat.Gshift = 0;
482	>	for (uint32 Gmask = visualFormat.Gmask; Gmask && ((Gmask & 1) != 1); Gmask >>= 1)
483	>	++visualFormat.Gshift;
484	>	visualFormat.Bshift = 0;
485	>	for (uint32 Bmask = visualFormat.Bmask; Bmask && ((Bmask & 1) != 1); Bmask >>= 1)
486	>	++visualFormat.Bshift;
487	>
488	>	// 1/2/4/8-bit mode on 8/16/32-bit screen?
489	>	Screen_blit = NULL;
490	>	switch (visualFormat.depth) {
491	>	case 8:
492	>	switch (mac_depth) {
493	>	case 1: Screen_blit = Blit_Expand_1_To_8; break;
494	>	case 2: Screen_blit = Blit_Expand_2_To_8; break;
495	>	case 4: Screen_blit = Blit_Expand_4_To_8; break;
496	>	}
497	>	break;
498	>	case 15:
499	>	case 16:
500	>	switch (mac_depth) {
501	>	case 2: Screen_blit = Blit_Expand_2_To_16; break;
502	>	case 4: Screen_blit = Blit_Expand_4_To_16; break;
503	>	case 8: Screen_blit = Blit_Expand_8_To_16; break;
504	>	}
505	>	break;
506	>	case 24:
507	>	case 32:
508	>	switch (mac_depth) {
509	>	case 2: Screen_blit = Blit_Expand_2_To_32; break;
510	>	case 4: Screen_blit = Blit_Expand_4_To_32; break;
511	>	case 8: Screen_blit = Blit_Expand_8_To_32; break;
512	>	}
513	>	break;
514	>	}
515	>	bool blitter_found = (Screen_blit != NULL);
516
517	<	// Search for an adequate blit function
518	<	bool blitter_found = false;
519	<	const int blitters_count = sizeof(Screen_blitters)/sizeof(Screen_blitters[0]);
520	<	for (int i = 0; !blitter_found && (i < blitters_count); i++) {
521	<	if ( (visualFormat.depth == Screen_blitters[i].depth)
522	<	&& (visualFormat.Rmask == Screen_blitters[i].Rmask)
523	<	&& (visualFormat.Gmask == Screen_blitters[i].Gmask)
524	<	&& (visualFormat.Bmask == Screen_blitters[i].Bmask)
525	<	)
526	<	{
527	<	blitter_found = true;
528	<	Screen_blit = native_byte_order
529	<	? Screen_blitters[i].handler_nbo
530	<	: Screen_blitters[i].handler_obo
531	<	;
517	>	// Search for an adequate blit function
518	>	const int blitters_count = sizeof(Screen_blitters)/sizeof(Screen_blitters[0]);
519	>	for (int i = 0; !blitter_found && (i < blitters_count); i++) {
520	>	if ( (visualFormat.depth == Screen_blitters[i].depth)
521	>	&& (visualFormat.Rmask == Screen_blitters[i].Rmask)
522	>	&& (visualFormat.Gmask == Screen_blitters[i].Gmask)
523	>	&& (visualFormat.Bmask == Screen_blitters[i].Bmask)
524	>	)
525	>	{
526	>	blitter_found = true;
527	>	Screen_blit = native_byte_order
528	>	? Screen_blitters[i].handler_nbo
529	>	: Screen_blitters[i].handler_obo
530	>	;
531	>	}
532		}
286	–	}
533
534	<	// No appropriate blitter found, dump RGB mask values and abort()
535	<	if (!blitter_found) {
536	<	fprintf(stderr, "### No appropriate blitter found\n");
537	<	fprintf(stderr, "\tR/G/B mask values : 0x%06x, 0x%06x, 0x%06x (depth = %d)\n",
538	<	visualFormat.Rmask, visualFormat.Gmask, visualFormat.Bmask, visualFormat.depth);
539	<	fprintf(stderr, "\tR/G/B shift values : %d/%d/%d\n",
540	<	visualFormat.Rshift, visualFormat.Gshift, visualFormat.Bshift);
541	<	abort();
534	>	// No appropriate blitter found, dump RGB mask values and abort()
535	>	if (!blitter_found) {
536	>	fprintf(stderr, "### No appropriate blitter found\n");
537	>	fprintf(stderr, "\tR/G/B mask values : 0x%06x, 0x%06x, 0x%06x (depth = %d)\n",
538	>	visualFormat.Rmask, visualFormat.Gmask, visualFormat.Bmask, visualFormat.depth);
539	>	fprintf(stderr, "\tR/G/B shift values : %d/%d/%d\n",
540	>	visualFormat.Rshift, visualFormat.Gshift, visualFormat.Bshift);
541	>	abort();
542	>	}
543		}
544	+	#else
545	+	// The UAE memory handlers will blit correctly
546	+	// --> no need for specialised blitters here
547	+	Screen_blit = Blit_Copy_Raw;
548	+	#endif
549
550		// If the blitter simply reduces to a copy, we don't need VOSF in DGA mode
551		// --> In that case, we return FALSE
552		return (Screen_blit != Blit_Copy_Raw);
553		}
302	–	#endif /* ENABLE_VOSF */

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Comparing BasiliskII/src/Unix/video_blit.cpp (file contents): Revision 1.1 by gbeauche, 2001-01-28T14:05:19Z vs. Revision 1.16 by gbeauche, 2005-01-30T21:42:14Z

Diff Legend

Comparing BasiliskII/src/Unix/video_blit.cpp (file contents):
Revision 1.1 by gbeauche, 2001-01-28T14:05:19Z vs.
Revision 1.16 by gbeauche, 2005-01-30T21:42:14Z