1 /**************************************************************************
3 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
30 * Functions to produce packed colors/Z from floats.
34 #ifndef U_PACK_COLOR_H
35 #define U_PACK_COLOR_H
38 #include "pipe/p_compiler.h"
39 #include "pipe/p_format.h"
40 #include "util/u_math.h"
44 * Pack ubyte R,G,B,A into dest pixel.
47 util_pack_color_ub(ubyte r
, ubyte g
, ubyte b
, ubyte a
,
48 enum pipe_format format
, void *dest
)
51 case PIPE_FORMAT_R8G8B8A8_UNORM
:
53 uint
*d
= (uint
*) dest
;
54 *d
= (r
<< 24) | (g
<< 16) | (b
<< 8) | a
;
57 case PIPE_FORMAT_R8G8B8X8_UNORM
:
59 uint
*d
= (uint
*) dest
;
60 *d
= (r
<< 24) | (g
<< 16) | (b
<< 8) | 0xff;
63 case PIPE_FORMAT_A8R8G8B8_UNORM
:
65 uint
*d
= (uint
*) dest
;
66 *d
= (a
<< 24) | (r
<< 16) | (g
<< 8) | b
;
69 case PIPE_FORMAT_X8R8G8B8_UNORM
:
71 uint
*d
= (uint
*) dest
;
72 *d
= (0xff << 24) | (r
<< 16) | (g
<< 8) | b
;
75 case PIPE_FORMAT_B8G8R8A8_UNORM
:
77 uint
*d
= (uint
*) dest
;
78 *d
= (b
<< 24) | (g
<< 16) | (r
<< 8) | a
;
81 case PIPE_FORMAT_B8G8R8X8_UNORM
:
83 uint
*d
= (uint
*) dest
;
84 *d
= (b
<< 24) | (g
<< 16) | (r
<< 8) | 0xff;
87 case PIPE_FORMAT_R5G6B5_UNORM
:
89 ushort
*d
= (ushort
*) dest
;
90 *d
= ((r
& 0xf8) << 8) | ((g
& 0xfc) << 3) | (b
>> 3);
93 case PIPE_FORMAT_A1R5G5B5_UNORM
:
95 ushort
*d
= (ushort
*) dest
;
96 *d
= ((a
& 0x80) << 8) | ((r
& 0xf8) << 7) | ((g
& 0xf8) << 2) | (b
>> 3);
99 case PIPE_FORMAT_A4R4G4B4_UNORM
:
101 ushort
*d
= (ushort
*) dest
;
102 *d
= ((a
& 0xf0) << 8) | ((r
& 0xf0) << 4) | ((g
& 0xf0) << 0) | (b
>> 4);
105 case PIPE_FORMAT_A8_UNORM
:
107 ubyte
*d
= (ubyte
*) dest
;
111 case PIPE_FORMAT_L8_UNORM
:
112 case PIPE_FORMAT_I8_UNORM
:
114 ubyte
*d
= (ubyte
*) dest
;
118 case PIPE_FORMAT_R32G32B32A32_FLOAT
:
120 float *d
= (float *) dest
;
121 d
[0] = (float)r
/ 255.0f
;
122 d
[1] = (float)g
/ 255.0f
;
123 d
[2] = (float)b
/ 255.0f
;
124 d
[3] = (float)a
/ 255.0f
;
127 case PIPE_FORMAT_R32G32B32_FLOAT
:
129 float *d
= (float *) dest
;
130 d
[0] = (float)r
/ 255.0f
;
131 d
[1] = (float)g
/ 255.0f
;
132 d
[2] = (float)b
/ 255.0f
;
136 /* XXX lots more cases to add */
138 debug_print_format("gallium: unhandled format in util_pack_color_ub()", format
);
145 * Unpack RGBA from a packed pixel, returning values as ubytes in [0,255].
148 util_unpack_color_ub(enum pipe_format format
, const void *src
,
149 ubyte
*r
, ubyte
*g
, ubyte
*b
, ubyte
*a
)
152 case PIPE_FORMAT_R8G8B8A8_UNORM
:
154 uint p
= ((const uint
*) src
)[0];
155 *r
= (ubyte
) ((p
>> 24) & 0xff);
156 *g
= (ubyte
) ((p
>> 16) & 0xff);
157 *b
= (ubyte
) ((p
>> 8) & 0xff);
158 *a
= (ubyte
) ((p
>> 0) & 0xff);
161 case PIPE_FORMAT_R8G8B8X8_UNORM
:
163 uint p
= ((const uint
*) src
)[0];
164 *r
= (ubyte
) ((p
>> 24) & 0xff);
165 *g
= (ubyte
) ((p
>> 16) & 0xff);
166 *b
= (ubyte
) ((p
>> 8) & 0xff);
170 case PIPE_FORMAT_A8R8G8B8_UNORM
:
172 uint p
= ((const uint
*) src
)[0];
173 *r
= (ubyte
) ((p
>> 16) & 0xff);
174 *g
= (ubyte
) ((p
>> 8) & 0xff);
175 *b
= (ubyte
) ((p
>> 0) & 0xff);
176 *a
= (ubyte
) ((p
>> 24) & 0xff);
179 case PIPE_FORMAT_X8R8G8B8_UNORM
:
181 uint p
= ((const uint
*) src
)[0];
182 *r
= (ubyte
) ((p
>> 16) & 0xff);
183 *g
= (ubyte
) ((p
>> 8) & 0xff);
184 *b
= (ubyte
) ((p
>> 0) & 0xff);
188 case PIPE_FORMAT_B8G8R8A8_UNORM
:
190 uint p
= ((const uint
*) src
)[0];
191 *r
= (ubyte
) ((p
>> 8) & 0xff);
192 *g
= (ubyte
) ((p
>> 16) & 0xff);
193 *b
= (ubyte
) ((p
>> 24) & 0xff);
194 *a
= (ubyte
) ((p
>> 0) & 0xff);
197 case PIPE_FORMAT_B8G8R8X8_UNORM
:
199 uint p
= ((const uint
*) src
)[0];
200 *r
= (ubyte
) ((p
>> 8) & 0xff);
201 *g
= (ubyte
) ((p
>> 16) & 0xff);
202 *b
= (ubyte
) ((p
>> 24) & 0xff);
206 case PIPE_FORMAT_R5G6B5_UNORM
:
208 ushort p
= ((const ushort
*) src
)[0];
209 *r
= (ubyte
) (((p
>> 8) & 0xf8) | ((p
>> 13) & 0x7));
210 *g
= (ubyte
) (((p
>> 3) & 0xfc) | ((p
>> 9) & 0x3));
211 *b
= (ubyte
) (((p
<< 3) & 0xf8) | ((p
>> 2) & 0x7));
215 case PIPE_FORMAT_A1R5G5B5_UNORM
:
217 ushort p
= ((const ushort
*) src
)[0];
218 *r
= (ubyte
) (((p
>> 7) & 0xf8) | ((p
>> 12) & 0x7));
219 *g
= (ubyte
) (((p
>> 2) & 0xf8) | ((p
>> 7) & 0x7));
220 *b
= (ubyte
) (((p
<< 3) & 0xf8) | ((p
>> 2) & 0x7));
221 *a
= (ubyte
) (0xff * (p
>> 15));
224 case PIPE_FORMAT_A4R4G4B4_UNORM
:
226 ushort p
= ((const ushort
*) src
)[0];
227 *r
= (ubyte
) (((p
>> 4) & 0xf0) | ((p
>> 8) & 0xf));
228 *g
= (ubyte
) (((p
>> 0) & 0xf0) | ((p
>> 4) & 0xf));
229 *b
= (ubyte
) (((p
<< 4) & 0xf0) | ((p
>> 0) & 0xf));
230 *a
= (ubyte
) (((p
>> 8) & 0xf0) | ((p
>> 12) & 0xf));
233 case PIPE_FORMAT_A8_UNORM
:
235 ubyte p
= ((const ubyte
*) src
)[0];
236 *r
= *g
= *b
= (ubyte
) 0xff;
240 case PIPE_FORMAT_L8_UNORM
:
242 ubyte p
= ((const ubyte
*) src
)[0];
247 case PIPE_FORMAT_I8_UNORM
:
249 ubyte p
= ((const ubyte
*) src
)[0];
250 *r
= *g
= *b
= *a
= p
;
253 case PIPE_FORMAT_R32G32B32A32_FLOAT
:
255 const float *p
= (const float *) src
;
256 *r
= float_to_ubyte(p
[0]);
257 *g
= float_to_ubyte(p
[1]);
258 *b
= float_to_ubyte(p
[2]);
259 *a
= float_to_ubyte(p
[3]);
262 case PIPE_FORMAT_R32G32B32_FLOAT
:
264 const float *p
= (const float *) src
;
265 *r
= float_to_ubyte(p
[0]);
266 *g
= float_to_ubyte(p
[1]);
267 *b
= float_to_ubyte(p
[2]);
272 case PIPE_FORMAT_R32G32_FLOAT
:
274 const float *p
= (const float *) src
;
275 *r
= float_to_ubyte(p
[0]);
276 *g
= float_to_ubyte(p
[1]);
277 *b
= *a
= (ubyte
) 0xff;
281 case PIPE_FORMAT_R32_FLOAT
:
283 const float *p
= (const float *) src
;
284 *r
= float_to_ubyte(p
[0]);
285 *g
= *b
= *a
= (ubyte
) 0xff;
289 /* XXX lots more cases to add */
291 debug_print_format("gallium: unhandled format in util_unpack_color_ub()",
300 * Note rgba outside [0,1] will be clamped for int pixel formats.
303 util_pack_color(const float rgba
[4], enum pipe_format format
, void *dest
)
307 if (pf_size_x(format
) <= 8) {
308 /* format uses 8-bit components or less */
309 r
= float_to_ubyte(rgba
[0]);
310 g
= float_to_ubyte(rgba
[1]);
311 b
= float_to_ubyte(rgba
[2]);
312 a
= float_to_ubyte(rgba
[3]);
316 case PIPE_FORMAT_R8G8B8A8_UNORM
:
318 uint
*d
= (uint
*) dest
;
319 *d
= (r
<< 24) | (g
<< 16) | (b
<< 8) | a
;
322 case PIPE_FORMAT_R8G8B8X8_UNORM
:
324 uint
*d
= (uint
*) dest
;
325 *d
= (r
<< 24) | (g
<< 16) | (b
<< 8) | 0xff;
328 case PIPE_FORMAT_A8R8G8B8_UNORM
:
330 uint
*d
= (uint
*) dest
;
331 *d
= (a
<< 24) | (r
<< 16) | (g
<< 8) | b
;
334 case PIPE_FORMAT_X8R8G8B8_UNORM
:
336 uint
*d
= (uint
*) dest
;
337 *d
= (0xff << 24) | (r
<< 16) | (g
<< 8) | b
;
340 case PIPE_FORMAT_B8G8R8A8_UNORM
:
342 uint
*d
= (uint
*) dest
;
343 *d
= (b
<< 24) | (g
<< 16) | (r
<< 8) | a
;
346 case PIPE_FORMAT_B8G8R8X8_UNORM
:
348 uint
*d
= (uint
*) dest
;
349 *d
= (b
<< 24) | (g
<< 16) | (r
<< 8) | 0xff;
352 case PIPE_FORMAT_R5G6B5_UNORM
:
354 ushort
*d
= (ushort
*) dest
;
355 *d
= ((r
& 0xf8) << 8) | ((g
& 0xfc) << 3) | (b
>> 3);
358 case PIPE_FORMAT_A1R5G5B5_UNORM
:
360 ushort
*d
= (ushort
*) dest
;
361 *d
= ((a
& 0x80) << 8) | ((r
& 0xf8) << 7) | ((g
& 0xf8) << 2) | (b
>> 3);
364 case PIPE_FORMAT_A4R4G4B4_UNORM
:
366 ushort
*d
= (ushort
*) dest
;
367 *d
= ((a
& 0xf0) << 8) | ((r
& 0xf0) << 4) | ((g
& 0xf0) << 0) | (b
>> 4);
370 case PIPE_FORMAT_A8_UNORM
:
372 ubyte
*d
= (ubyte
*) dest
;
376 case PIPE_FORMAT_L8_UNORM
:
377 case PIPE_FORMAT_I8_UNORM
:
379 ubyte
*d
= (ubyte
*) dest
;
383 case PIPE_FORMAT_R32G32B32A32_FLOAT
:
385 float *d
= (float *) dest
;
392 case PIPE_FORMAT_R32G32B32_FLOAT
:
394 float *d
= (float *) dest
;
400 /* XXX lots more cases to add */
402 debug_print_format("gallium: unhandled format in util_pack_color()", format
);
409 * Note: it's assumed that z is in [0,1]
412 util_pack_z(enum pipe_format format
, double z
)
418 case PIPE_FORMAT_Z16_UNORM
:
421 return (uint
) (z
* 0xffff);
422 case PIPE_FORMAT_Z32_UNORM
:
423 /* special-case to avoid overflow */
426 return (uint
) (z
* 0xffffffff);
427 case PIPE_FORMAT_S8Z24_UNORM
:
428 case PIPE_FORMAT_X8Z24_UNORM
:
431 return (uint
) (z
* 0xffffff);
432 case PIPE_FORMAT_Z24S8_UNORM
:
433 case PIPE_FORMAT_Z24X8_UNORM
:
436 return ((uint
) (z
* 0xffffff)) << 8;
437 case PIPE_FORMAT_S8_UNORM
:
438 /* this case can get it via util_pack_z_stencil() */
441 debug_print_format("gallium: unhandled format in util_pack_z()", format
);
449 * Pack Z and/or stencil values into a 32-bit value described by format.
450 * Note: it's assumed that z is in [0,1] and s in [0,255]
453 util_pack_z_stencil(enum pipe_format format
, double z
, uint s
)
455 unsigned packed
= util_pack_z(format
, z
);
458 case PIPE_FORMAT_S8Z24_UNORM
:
461 case PIPE_FORMAT_Z24S8_UNORM
:
464 case PIPE_FORMAT_S8_UNORM
:
476 * Pack 4 ubytes into a 4-byte word
478 static INLINE
unsigned
479 pack_ub4(ubyte b0
, ubyte b1
, ubyte b2
, ubyte b3
)
481 return ((((unsigned int)b0
) << 0) |
482 (((unsigned int)b1
) << 8) |
483 (((unsigned int)b2
) << 16) |
484 (((unsigned int)b3
) << 24));
489 * Pack/convert 4 floats into one 4-byte word.
491 static INLINE
unsigned
492 pack_ui32_float4(float a
, float b
, float c
, float d
)
494 return pack_ub4( float_to_ubyte(a
),
502 #endif /* U_PACK_COLOR_H */