summaryrefslogtreecommitdiff
path: root/src/gallium/include/pipe/p_util.h
blob: eec413842fbca8db0fe8ad03fdd1eb13fbe4941d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
/**************************************************************************
 * 
 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
 * All Rights Reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * 
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 * 
 **************************************************************************/

#ifndef P_UTIL_H
#define P_UTIL_H

#include "p_config.h"
#include "p_compiler.h"
#include "p_debug.h"
#include "p_format.h"
#include "p_pointer.h"

#if defined(PIPE_SUBSYSTEM_WINDOWS_MINIPORT)
__inline double ceil(double val)
{
	double ceil_val;

	if((val - (long) val) == 0) {
		ceil_val = val;
	} else {
		if(val > 0) {
			ceil_val = (long) val + 1;
		} else {
			ceil_val = (long) val;
		}
	}

	return ceil_val;
}

#ifndef PIPE_SUBSYSTEM_WINDOWS_CE
__inline double floor(double val)
{
	double floor_val;

	if((val - (long) val) == 0) {
		floor_val = val;
	} else {
		if(val > 0) {
			floor_val = (long) val;
		} else {
			floor_val = (long) val - 1;
		}
	}

	return floor_val;
}
#endif

#pragma function(pow)
__inline double __cdecl pow(double val, double exponent)
{
	/* XXX */
	assert(0);
	return 0;
}

#pragma function(log)
__inline double __cdecl log(double val)
{
	/* XXX */
	assert(0);
	return 0;
}

#pragma function(atan2)
__inline double __cdecl atan2(double val)
{
	/* XXX */
	assert(0);
	return 0;
}
#else
#include <math.h>
#include <stdarg.h>
#endif


#ifdef __cplusplus
extern "C" {
#endif


#if defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY) && defined(DEBUG) 

/* memory debugging */

#include "p_debug.h"

#define MALLOC( _size ) \
   debug_malloc( __FILE__, __LINE__, __FUNCTION__, _size )
#define CALLOC( _count, _size ) \
   debug_calloc(__FILE__, __LINE__, __FUNCTION__, _count, _size )
#define FREE( _ptr ) \
   debug_free( __FILE__, __LINE__, __FUNCTION__,  _ptr )
#define REALLOC( _ptr, _old_size, _size ) \
   debug_realloc( __FILE__, __LINE__, __FUNCTION__,  _ptr, _old_size, _size )

#elif defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY)

void * __stdcall
EngAllocMem(
    unsigned long Flags,
    unsigned long MemSize,
    unsigned long Tag );

void __stdcall
EngFreeMem(
    void *Mem );

#define MALLOC( _size ) EngAllocMem( 0, _size, 'D3AG' )
#define _FREE( _ptr ) EngFreeMem( _ptr )

#elif defined(PIPE_SUBSYSTEM_WINDOWS_MINIPORT)

void *
ExAllocatePool(
    unsigned long PoolType, 
    size_t NumberOfBytes);

void 
ExFreePool(void *P);

#define MALLOC(_size) ExAllocatePool(0, _size)
#define _FREE(_ptr) ExFreePool(_ptr)

#else

#define MALLOC( SIZE )  malloc( SIZE )
#define CALLOC( COUNT, SIZE )   calloc( COUNT, SIZE )
#define FREE( PTR )  free( PTR )
#define REALLOC( OLDPTR, OLDSIZE, NEWSIZE )  realloc( OLDPTR, NEWSIZE )

#endif


#ifndef CALLOC
static INLINE void *
CALLOC( unsigned count, unsigned size )
{
   void *ptr = MALLOC( count * size );
   if( ptr ) {
      memset( ptr, 0, count * size );
   }
   return ptr;
}
#endif /* !CALLOC */

#ifndef FREE
static INLINE void
FREE( void *ptr )
{
   if( ptr ) {
      _FREE( ptr );
   }
}
#endif /* !FREE */

#ifndef REALLOC
static INLINE void *
REALLOC( void *old_ptr, unsigned old_size, unsigned new_size )
{
   void *new_ptr = NULL;

   if (new_size != 0) {
      unsigned copy_size = old_size < new_size ? old_size : new_size;
      new_ptr = MALLOC( new_size );
      if (new_ptr && old_ptr && copy_size) {
         memcpy( new_ptr, old_ptr, copy_size );
      }
   }

   FREE( old_ptr );
   return new_ptr;
}
#endif /* !REALLOC */


#define MALLOC_STRUCT(T)   (struct T *) MALLOC(sizeof(struct T))

#define CALLOC_STRUCT(T)   (struct T *) CALLOC(1, sizeof(struct T))


/**
 * Return memory on given byte alignment
 */
static INLINE void *
align_malloc(size_t bytes, uint alignment)
{
#if defined(HAVE_POSIX_MEMALIGN)
   void *mem;
   (void) posix_memalign(& mem, alignment, bytes);
   return mem;
#else
   char *ptr, *buf;

   assert( alignment > 0 );

   ptr = (char *) MALLOC(bytes + alignment + sizeof(void *));
   if (!ptr)
      return NULL;

   buf = (char *) align_pointer( ptr + sizeof(void *), alignment );
   *(char **)(buf - sizeof(void *)) = ptr;

   return buf;
#endif /* defined(HAVE_POSIX_MEMALIGN) */
}

/**
 * Free memory returned by align_malloc().
 */
static INLINE void
align_free(void *ptr)
{
#if defined(HAVE_POSIX_MEMALIGN)
   FREE(ptr);
#else
   void **cubbyHole = (void **) ((char *) ptr - sizeof(void *));
   void *realAddr = *cubbyHole;
   FREE(realAddr);
#endif /* defined(HAVE_POSIX_MEMALIGN) */
}



/**
 * Duplicate a block of memory.
 */
static INLINE void *
mem_dup(const void *src, uint size)
{
   void *dup = MALLOC(size);
   if (dup)
      memcpy(dup, src, size);
   return dup;
}



#define CLAMP( X, MIN, MAX )  ( (X)<(MIN) ? (MIN) : ((X)>(MAX) ? (MAX) : (X)) )
#define MIN2( A, B )   ( (A)<(B) ? (A) : (B) )
#define MAX2( A, B )   ( (A)>(B) ? (A) : (B) )

#ifndef Elements
#define Elements(x) (sizeof(x)/sizeof((x)[0]))
#endif
#define Offset(TYPE, MEMBER) ((unsigned)&(((TYPE *)NULL)->MEMBER))

/**
 * Return a pointer aligned to next multiple of 16 bytes.
 */
static INLINE void *
align16( void *unaligned )
{
   return align_pointer( unaligned, 16 );
}


static INLINE int align_int(int x, int align)
{
   return (x + align - 1) & ~(align - 1);
}



#if defined(PIPE_CC_MSVC) && defined(PIPE_ARCH_X86)
static INLINE unsigned ffs( unsigned u )
{
   unsigned i;

   if( u == 0 ) {
      return 0;
   }

   __asm bsf eax, [u]
   __asm inc eax
   __asm mov [i], eax

   return i;
}
#endif

union fi {
   float f;
   int i;
   unsigned ui;
};

#define UBYTE_TO_FLOAT( ub ) ((float)(ub) / 255.0F)

#define IEEE_0996 0x3f7f0000	/* 0.996 or so */

/* This function/macro is sensitive to precision.  Test very carefully
 * if you change it!
 */
#define UNCLAMPED_FLOAT_TO_UBYTE(UB, F)					\
        do {								\
           union fi __tmp;						\
           __tmp.f = (F);						\
           if (__tmp.i < 0)						\
              UB = (ubyte) 0;						\
           else if (__tmp.i >= IEEE_0996)				\
              UB = (ubyte) 255;					\
           else {							\
              __tmp.f = __tmp.f * (255.0f/256.0f) + 32768.0f;		\
              UB = (ubyte) __tmp.i;					\
           }								\
        } while (0)



static INLINE unsigned pack_ub4( unsigned char b0,
				 unsigned char b1,
				 unsigned char b2,
				 unsigned char b3 )
{
   return ((((unsigned int)b0) << 0) |
	   (((unsigned int)b1) << 8) |
	   (((unsigned int)b2) << 16) |
	   (((unsigned int)b3) << 24));
}

static INLINE unsigned fui( float f )
{
   union fi fi;
   fi.f = f;
   return fi.ui;
}

static INLINE unsigned char float_to_ubyte( float f )
{
   unsigned char ub;
   UNCLAMPED_FLOAT_TO_UBYTE(ub, f);
   return ub;
}

static INLINE unsigned pack_ui32_float4( float a,
					 float b, 
					 float c, 
					 float d )
{
   return pack_ub4( float_to_ubyte(a),
		    float_to_ubyte(b),
		    float_to_ubyte(c),
		    float_to_ubyte(d) );
}

#define COPY_4V( DST, SRC )         \
do {                                \
   (DST)[0] = (SRC)[0];             \
   (DST)[1] = (SRC)[1];             \
   (DST)[2] = (SRC)[2];             \
   (DST)[3] = (SRC)[3];             \
} while (0)


#define COPY_4FV( DST, SRC )  COPY_4V(DST, SRC)


#define ASSIGN_4V( DST, V0, V1, V2, V3 ) \
do {                                     \
   (DST)[0] = (V0);                      \
   (DST)[1] = (V1);                      \
   (DST)[2] = (V2);                      \
   (DST)[3] = (V3);                      \
} while (0)


static INLINE int ifloor(float f)
{
   int ai, bi;
   double af, bf;
   union fi u;

   af = (3 << 22) + 0.5 + (double)f;
   bf = (3 << 22) + 0.5 - (double)f;
   u.f = (float) af;  ai = u.i;
   u.f = (float) bf;  bi = u.i;
   return (ai - bi) >> 1;
}


#if defined(PIPE_CC_GCC) && defined(PIPE_ARCH_X86) 
static INLINE int iround(float f)
{
   int r;
   __asm__ ("fistpl %0" : "=m" (r) : "t" (f) : "st");
   return r;
}
#elif defined(PIPE_CC_MSVC) && defined(PIPE_ARCH_X86)
static INLINE int iround(float f)
{
   int r;
   _asm {
	 fld f
	 fistp r
	}
   return r;
}
#else
#define IROUND(f)  ((int) (((f) >= 0.0F) ? ((f) + 0.5F) : ((f) - 0.5F)))
#endif


/* Could maybe have an inline version of this?
 */
#if defined(__GNUC__)
#define FABSF(x)   fabsf(x)
#else
#define FABSF(x)   ((float) fabs(x))
#endif

/* Pretty fast, and accurate.
 * Based on code from http://www.flipcode.com/totd/
 */
static INLINE float LOG2(float val)
{
   union fi num;
   int log_2;

   num.f = val;
   log_2 = ((num.i >> 23) & 255) - 128;
   num.i &= ~(255 << 23);
   num.i += 127 << 23;
   num.f = ((-1.0f/3) * num.f + 2) * num.f - 2.0f/3;
   return num.f + log_2;
}

#if defined(__GNUC__)
#define CEILF(x)   ceilf(x)
#else
#define CEILF(x)   ((float) ceil(x))
#endif

static INLINE int align(int value, int alignment)
{
   return (value + alignment - 1) & ~(alignment - 1);
}


/* util/p_util.c
 */
extern void pipe_copy_rect(ubyte * dst, const struct pipe_format_block *block,
                           unsigned dst_stride, unsigned dst_x, unsigned dst_y,
                           unsigned width, unsigned height, const ubyte * src,
                           int src_stride, unsigned src_x, int src_y);

extern void
pipe_fill_rect(ubyte * dst, const struct pipe_format_block *block,
               unsigned dst_stride, unsigned dst_x, unsigned dst_y,
               unsigned width, unsigned height, uint32_t value);


#if defined(_MSC_VER) 
#if _MSC_VER < 1400 && !defined(__cplusplus) || defined(PIPE_SUBSYSTEM_WINDOWS_CE)
 
static INLINE float cosf( float f ) 
{
   return (float) cos( (double) f );
}

static INLINE float sinf( float f ) 
{
   return (float) sin( (double) f );
}

static INLINE float ceilf( float f ) 
{
   return (float) ceil( (double) f );
}

static INLINE float floorf( float f ) 
{
   return (float) floor( (double) f );
}

static INLINE float powf( float f, float g ) 
{
   return (float) pow( (double) f, (double) g );
}

static INLINE float sqrtf( float f ) 
{
   return (float) sqrt( (double) f );
}

static INLINE float fabsf( float f ) 
{
   return (float) fabs( (double) f );
}

static INLINE float logf( float f ) 
{
   return (float) log( (double) f );
}

#else
/* Work-around an extra semi-colon in VS 2005 logf definition */
#ifdef logf
#undef logf
#define logf(x) ((float)log((double)(x)))
#endif /* logf */
#endif
#endif /* _MSC_VER */


#ifdef __cplusplus
}
#endif

#endif