85001c14f220cefc2b80e914c6bcd31402df630b
[mesa.git] / src / gallium / auxiliary / util / u_format_other.c
1 /**************************************************************************
2 *
3 * Copyright 2010 VMware, Inc.
4 * All Rights Reserved.
5 *
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:
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
18 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
19 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
20 * USE OR OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * The above copyright notice and this permission notice (including the
23 * next paragraph) shall be included in all copies or substantial portions
24 * of the Software.
25 *
26 **************************************************************************/
27
28
29 #include "u_math.h"
30 #include "u_format_other.h"
31 #include "u_format_rgb9e5.h"
32 #include "u_format_r11g11b10f.h"
33
34
35 void
36 util_format_r9g9b9e5_float_unpack_rgba_float(float *dst_row, unsigned dst_stride,
37 const uint8_t *src_row, unsigned src_stride,
38 unsigned width, unsigned height)
39 {
40 unsigned x, y;
41 for(y = 0; y < height; y += 1) {
42 float *dst = dst_row;
43 const uint8_t *src = src_row;
44 for(x = 0; x < width; x += 1) {
45 uint32_t value = *(const uint32_t *)src;
46 #ifdef PIPE_ARCH_BIG_ENDIAN
47 value = util_bswap32(value);
48 #endif
49 rgb9e5_to_float3(value, dst);
50 dst[3] = 1; /* a */
51 src += 4;
52 dst += 4;
53 }
54 src_row += src_stride;
55 dst_row += dst_stride/sizeof(*dst_row);
56 }
57 }
58
59 void
60 util_format_r9g9b9e5_float_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
61 const float *src_row, unsigned src_stride,
62 unsigned width, unsigned height)
63 {
64 unsigned x, y;
65 for(y = 0; y < height; y += 1) {
66 const float *src = src_row;
67 uint8_t *dst = dst_row;
68 for(x = 0; x < width; x += 1) {
69 uint32_t value = float3_to_rgb9e5(src);
70 #ifdef PIPE_ARCH_BIG_ENDIAN
71 value = util_bswap32(value);
72 #endif
73 *(uint32_t *)dst = value;
74 src += 4;
75 dst += 4;
76 }
77 dst_row += dst_stride;
78 src_row += src_stride/sizeof(*src_row);
79 }
80 }
81
82 void
83 util_format_r9g9b9e5_float_fetch_rgba_float(float *dst, const uint8_t *src,
84 unsigned i, unsigned j)
85 {
86 uint32_t value = *(const uint32_t *)src;
87 #ifdef PIPE_ARCH_BIG_ENDIAN
88 value = util_bswap32(value);
89 #endif
90 rgb9e5_to_float3(value, dst);
91 dst[3] = 1; /* a */
92 }
93
94
95 void
96 util_format_r9g9b9e5_float_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
97 const uint8_t *src_row, unsigned src_stride,
98 unsigned width, unsigned height)
99 {
100 unsigned x, y;
101 float p[3];
102 for(y = 0; y < height; y += 1) {
103 uint8_t *dst = dst_row;
104 const uint8_t *src = src_row;
105 for(x = 0; x < width; x += 1) {
106 uint32_t value = *(const uint32_t *)src;
107 #ifdef PIPE_ARCH_BIG_ENDIAN
108 value = util_bswap32(value);
109 #endif
110 rgb9e5_to_float3(value, p);
111 dst[0] = float_to_ubyte(p[0]); /* r */
112 dst[1] = float_to_ubyte(p[1]); /* g */
113 dst[2] = float_to_ubyte(p[2]); /* b */
114 dst[3] = 255; /* a */
115 src += 4;
116 dst += 4;
117 }
118 src_row += src_stride;
119 dst_row += dst_stride/sizeof(*dst_row);
120 }
121 }
122
123
124 void
125 util_format_r9g9b9e5_float_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
126 const uint8_t *src_row, unsigned src_stride,
127 unsigned width, unsigned height)
128 {
129 unsigned x, y;
130 float p[3];
131 for(y = 0; y < height; y += 1) {
132 const uint8_t *src = src_row;
133 uint8_t *dst = dst_row;
134 for(x = 0; x < width; x += 1) {
135 uint32_t value;
136 p[0] = ubyte_to_float(src[0]);
137 p[1] = ubyte_to_float(src[1]);
138 p[2] = ubyte_to_float(src[2]);
139 value = float3_to_rgb9e5(p);
140 #ifdef PIPE_ARCH_BIG_ENDIAN
141 value = util_bswap32(value);
142 #endif
143 *(uint32_t *)dst = value;
144 src += 4;
145 dst += 4;
146 }
147 dst_row += dst_stride;
148 src_row += src_stride/sizeof(*src_row);
149 }
150 }
151
152
153 void
154 util_format_r11g11b10_float_unpack_rgba_float(float *dst_row, unsigned dst_stride,
155 const uint8_t *src_row, unsigned src_stride,
156 unsigned width, unsigned height)
157 {
158 unsigned x, y;
159 for(y = 0; y < height; y += 1) {
160 float *dst = dst_row;
161 const uint8_t *src = src_row;
162 for(x = 0; x < width; x += 1) {
163 uint32_t value = *(const uint32_t *)src;
164 #ifdef PIPE_ARCH_BIG_ENDIAN
165 value = util_bswap32(value);
166 #endif
167 r11g11b10f_to_float3(value, dst);
168 dst[3] = 1; /* a */
169 src += 4;
170 dst += 4;
171 }
172 src_row += src_stride;
173 dst_row += dst_stride/sizeof(*dst_row);
174 }
175 }
176
177 void
178 util_format_r11g11b10_float_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
179 const float *src_row, unsigned src_stride,
180 unsigned width, unsigned height)
181 {
182 unsigned x, y;
183 for(y = 0; y < height; y += 1) {
184 const float *src = src_row;
185 uint8_t *dst = dst_row;
186 for(x = 0; x < width; x += 1) {
187 uint32_t value = float3_to_r11g11b10f(src);
188 #ifdef PIPE_ARCH_BIG_ENDIAN
189 value = util_bswap32(value);
190 #endif
191 *(uint32_t *)dst = value;
192 src += 4;
193 dst += 4;
194 }
195 dst_row += dst_stride;
196 src_row += src_stride/sizeof(*src_row);
197 }
198 }
199
200 void
201 util_format_r11g11b10_float_fetch_rgba_float(float *dst, const uint8_t *src,
202 unsigned i, unsigned j)
203 {
204 uint32_t value = *(const uint32_t *)src;
205 #ifdef PIPE_ARCH_BIG_ENDIAN
206 value = util_bswap32(value);
207 #endif
208 r11g11b10f_to_float3(value, dst);
209 dst[3] = 1; /* a */
210 }
211
212
213 void
214 util_format_r11g11b10_float_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
215 const uint8_t *src_row, unsigned src_stride,
216 unsigned width, unsigned height)
217 {
218 unsigned x, y;
219 float p[3];
220 for(y = 0; y < height; y += 1) {
221 uint8_t *dst = dst_row;
222 const uint8_t *src = src_row;
223 for(x = 0; x < width; x += 1) {
224 uint32_t value = *(const uint32_t *)src;
225 #ifdef PIPE_ARCH_BIG_ENDIAN
226 value = util_bswap32(value);
227 #endif
228 r11g11b10f_to_float3(value, p);
229 dst[0] = float_to_ubyte(p[0]); /* r */
230 dst[1] = float_to_ubyte(p[1]); /* g */
231 dst[2] = float_to_ubyte(p[2]); /* b */
232 dst[3] = 255; /* a */
233 src += 4;
234 dst += 4;
235 }
236 src_row += src_stride;
237 dst_row += dst_stride/sizeof(*dst_row);
238 }
239 }
240
241
242 void
243 util_format_r11g11b10_float_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
244 const uint8_t *src_row, unsigned src_stride,
245 unsigned width, unsigned height)
246 {
247 unsigned x, y;
248 float p[3];
249 for(y = 0; y < height; y += 1) {
250 const uint8_t *src = src_row;
251 uint8_t *dst = dst_row;
252 for(x = 0; x < width; x += 1) {
253 uint32_t value;
254 p[0] = ubyte_to_float(src[0]);
255 p[1] = ubyte_to_float(src[1]);
256 p[2] = ubyte_to_float(src[2]);
257 value = float3_to_r11g11b10f(p);
258 #ifdef PIPE_ARCH_BIG_ENDIAN
259 value = util_bswap32(value);
260 #endif
261 *(uint32_t *)dst = value;
262 src += 4;
263 dst += 4;
264 }
265 dst_row += dst_stride;
266 src_row += src_stride/sizeof(*src_row);
267 }
268 }
269
270
271 void
272 util_format_r1_unorm_unpack_rgba_float(float *dst_row, unsigned dst_stride,
273 const uint8_t *src_row, unsigned src_stride,
274 unsigned width, unsigned height)
275 {
276
277 }
278
279
280 void
281 util_format_r1_unorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
282 const float *src_row, unsigned src_stride,
283 unsigned width, unsigned height)
284 {
285
286 }
287
288
289 void
290 util_format_r1_unorm_fetch_rgba_float(float *dst, const uint8_t *src,
291 unsigned i, unsigned j)
292 {
293
294 }
295
296
297 void
298 util_format_r1_unorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
299 const uint8_t *src_row, unsigned src_stride,
300 unsigned width, unsigned height)
301 {
302
303 }
304
305
306 void
307 util_format_r1_unorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
308 const uint8_t *src_row, unsigned src_stride,
309 unsigned width, unsigned height)
310 {
311 }
312
313
314 /*
315 * PIPE_FORMAT_R8G8Bx_SNORM
316 *
317 * A.k.a. D3DFMT_CxV8U8
318 */
319
320 static uint8_t
321 r8g8bx_derive(int16_t r, int16_t g)
322 {
323 /* Derive blue from red and green components.
324 * Apparently, we must always use integers to perform calculations,
325 * otherwise the results won't match D3D's CxV8U8 definition.
326 */
327 return (uint8_t)sqrtf(0x7f * 0x7f - r * r - g * g) * 0xff / 0x7f;
328 }
329
330 void
331 util_format_r8g8bx_snorm_unpack_rgba_float(float *dst_row, unsigned dst_stride,
332 const uint8_t *src_row, unsigned src_stride,
333 unsigned width, unsigned height)
334 {
335 unsigned x, y;
336
337 for(y = 0; y < height; y += 1) {
338 float *dst = dst_row;
339 const uint16_t *src = (const uint16_t *)src_row;
340 for(x = 0; x < width; x += 1) {
341 uint16_t value = *src++;
342 int16_t r, g;
343
344 #ifdef PIPE_ARCH_BIG_ENDIAN
345 value = util_bswap16(value);
346 #endif
347
348 r = ((int16_t)(value << 8)) >> 8;
349 g = ((int16_t)(value << 0)) >> 8;
350
351 dst[0] = (float)(r * (1.0f/0x7f)); /* r */
352 dst[1] = (float)(g * (1.0f/0x7f)); /* g */
353 dst[2] = r8g8bx_derive(r, g) * (1.0f/0xff); /* b */
354 dst[3] = 1.0f; /* a */
355 dst += 4;
356 }
357 src_row += src_stride;
358 dst_row += dst_stride/sizeof(*dst_row);
359 }
360 }
361
362
363 void
364 util_format_r8g8bx_snorm_unpack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
365 const uint8_t *src_row, unsigned src_stride,
366 unsigned width, unsigned height)
367 {
368 unsigned x, y;
369 for(y = 0; y < height; y += 1) {
370 uint8_t *dst = dst_row;
371 const uint16_t *src = (const uint16_t *)src_row;
372 for(x = 0; x < width; x += 1) {
373 uint16_t value = *src++;
374 int16_t r, g;
375
376 #ifdef PIPE_ARCH_BIG_ENDIAN
377 value = util_bswap16(value);
378 #endif
379
380 r = ((int16_t)(value << 8)) >> 8;
381 g = ((int16_t)(value << 0)) >> 8;
382
383 dst[0] = (uint8_t)(((uint16_t)MAX2(r, 0)) * 0xff / 0x7f); /* r */
384 dst[1] = (uint8_t)(((uint16_t)MAX2(g, 0)) * 0xff / 0x7f); /* g */
385 dst[2] = r8g8bx_derive(r, g); /* b */
386 dst[3] = 255; /* a */
387 dst += 4;
388 }
389 src_row += src_stride;
390 dst_row += dst_stride/sizeof(*dst_row);
391 }
392 }
393
394
395 void
396 util_format_r8g8bx_snorm_pack_rgba_float(uint8_t *dst_row, unsigned dst_stride,
397 const float *src_row, unsigned src_stride,
398 unsigned width, unsigned height)
399 {
400 unsigned x, y;
401 for(y = 0; y < height; y += 1) {
402 const float *src = src_row;
403 uint16_t *dst = (uint16_t *)dst_row;
404 for(x = 0; x < width; x += 1) {
405 uint16_t value = 0;
406
407 value |= (uint16_t)(((int8_t)(CLAMP(src[0], -1, 1) * 0x7f)) & 0xff) ;
408 value |= (uint16_t)((((int8_t)(CLAMP(src[1], -1, 1) * 0x7f)) & 0xff) << 8) ;
409
410 #ifdef PIPE_ARCH_BIG_ENDIAN
411 value = util_bswap16(value);
412 #endif
413
414 *dst++ = value;
415
416 src += 4;
417 }
418 dst_row += dst_stride;
419 src_row += src_stride/sizeof(*src_row);
420 }
421 }
422
423
424 void
425 util_format_r8g8bx_snorm_pack_rgba_8unorm(uint8_t *dst_row, unsigned dst_stride,
426 const uint8_t *src_row, unsigned src_stride,
427 unsigned width, unsigned height)
428 {
429 unsigned x, y;
430
431 for(y = 0; y < height; y += 1) {
432 const uint8_t *src = src_row;
433 uint16_t *dst = (uint16_t *)dst_row;
434 for(x = 0; x < width; x += 1) {
435 uint16_t value = 0;
436
437 value |= src[0] >> 1;
438 value |= (src[1] >> 1) << 8;
439
440 #ifdef PIPE_ARCH_BIG_ENDIAN
441 value = util_bswap16(value);
442 #endif
443
444 *dst++ = value;
445
446 src += 4;
447 }
448 dst_row += dst_stride;
449 src_row += src_stride/sizeof(*src_row);
450 }
451 }
452
453
454 void
455 util_format_r8g8bx_snorm_fetch_rgba_float(float *dst, const uint8_t *src,
456 unsigned i, unsigned j)
457 {
458 uint16_t value = *(const uint16_t *)src;
459 int16_t r, g;
460
461 #ifdef PIPE_ARCH_BIG_ENDIAN
462 value = util_bswap16(value);
463 #endif
464
465 r = ((int16_t)(value << 8)) >> 8;
466 g = ((int16_t)(value << 0)) >> 8;
467
468 dst[0] = r * (1.0f/0x7f); /* r */
469 dst[1] = g * (1.0f/0x7f); /* g */
470 dst[2] = r8g8bx_derive(r, g) * (1.0f/0xff); /* b */
471 dst[3] = 1.0f; /* a */
472 }