1 /**************************************************************************
2 *
3 * Copyright 2007 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 above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
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 VMWARE 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.
25 *
26 **************************************************************************/
27
28 /**
29 * RGBA/float tile get/put functions.
30 * Usable both by drivers and gallium frontends.
31 */
32
33
34 #include "pipe/p_defines.h"
35 #include "util/u_inlines.h"
36
37 #include "util/format/u_format.h"
38 #include "util/format/u_format_bptc.h"
39 #include "util/u_math.h"
40 #include "util/u_memory.h"
41 #include "util/u_surface.h"
42 #include "util/u_tile.h"
43
44
45 /**
46 * Move raw block of pixels from transfer object to user memory.
47 */
48 void
pipe_get_tile_raw(struct pipe_transfer * pt,const void * src,uint x,uint y,uint w,uint h,void * dst,int dst_stride)49 pipe_get_tile_raw(struct pipe_transfer *pt,
50 const void *src,
51 uint x, uint y, uint w, uint h,
52 void *dst, int dst_stride)
53 {
54 if (dst_stride == 0)
55 dst_stride = util_format_get_stride(pt->resource->format, w);
56
57 if (u_clip_tile(x, y, &w, &h, &pt->box))
58 return;
59
60 util_copy_rect(dst, pt->resource->format, dst_stride, 0, 0, w, h, src, pt->stride, x, y);
61 }
62
63
64 /**
65 * Move raw block of pixels from user memory to transfer object.
66 */
67 void
pipe_put_tile_raw(struct pipe_transfer * pt,void * dst,uint x,uint y,uint w,uint h,const void * src,int src_stride)68 pipe_put_tile_raw(struct pipe_transfer *pt,
69 void *dst,
70 uint x, uint y, uint w, uint h,
71 const void *src, int src_stride)
72 {
73 enum pipe_format format = pt->resource->format;
74
75 if (src_stride == 0)
76 src_stride = util_format_get_stride(format, w);
77
78 if (u_clip_tile(x, y, &w, &h, &pt->box))
79 return;
80
81 util_copy_rect(dst, format, pt->stride, x, y, w, h, src, src_stride, 0, 0);
82 }
83
84
85
86
87 /** Convert short in [-32768,32767] to GLfloat in [-1.0,1.0] */
88 #define SHORT_TO_FLOAT(S) ((2.0F * (S) + 1.0F) * (1.0F/65535.0F))
89
90 #define UNCLAMPED_FLOAT_TO_SHORT(us, f) \
91 us = ( (short) ( CLAMP((f), -1.0, 1.0) * 32767.0F) )
92
93
94
95 /*** PIPE_FORMAT_Z16_UNORM ***/
96
97 /**
98 * Return each Z value as four floats in [0,1].
99 */
100 static void
z16_get_tile_rgba(const ushort * src,unsigned w,unsigned h,float * p,unsigned dst_stride)101 z16_get_tile_rgba(const ushort *src,
102 unsigned w, unsigned h,
103 float *p,
104 unsigned dst_stride)
105 {
106 const float scale = 1.0f / 65535.0f;
107 unsigned i, j;
108
109 for (i = 0; i < h; i++) {
110 float *pRow = p;
111 for (j = 0; j < w; j++, pRow += 4) {
112 pRow[0] =
113 pRow[1] =
114 pRow[2] =
115 pRow[3] = *src++ * scale;
116 }
117 p += dst_stride;
118 }
119 }
120
121
122
123
124 /*** PIPE_FORMAT_Z32_UNORM ***/
125
126 /**
127 * Return each Z value as four floats in [0,1].
128 */
129 static void
z32_get_tile_rgba(const unsigned * src,unsigned w,unsigned h,float * p,unsigned dst_stride)130 z32_get_tile_rgba(const unsigned *src,
131 unsigned w, unsigned h,
132 float *p,
133 unsigned dst_stride)
134 {
135 const double scale = 1.0 / (double) 0xffffffff;
136 unsigned i, j;
137
138 for (i = 0; i < h; i++) {
139 float *pRow = p;
140 for (j = 0; j < w; j++, pRow += 4) {
141 pRow[0] =
142 pRow[1] =
143 pRow[2] =
144 pRow[3] = (float) (*src++ * scale);
145 }
146 p += dst_stride;
147 }
148 }
149
150
151 /*** PIPE_FORMAT_Z24_UNORM_S8_UINT ***/
152
153 /**
154 * Return Z component as four float in [0,1]. Stencil part ignored.
155 */
156 static void
s8z24_get_tile_rgba(const unsigned * src,unsigned w,unsigned h,float * p,unsigned dst_stride)157 s8z24_get_tile_rgba(const unsigned *src,
158 unsigned w, unsigned h,
159 float *p,
160 unsigned dst_stride)
161 {
162 const double scale = 1.0 / ((1 << 24) - 1);
163 unsigned i, j;
164
165 for (i = 0; i < h; i++) {
166 float *pRow = p;
167 for (j = 0; j < w; j++, pRow += 4) {
168 pRow[0] =
169 pRow[1] =
170 pRow[2] =
171 pRow[3] = (float) (scale * (*src++ & 0xffffff));
172 }
173 p += dst_stride;
174 }
175 }
176
177
178 /*** PIPE_FORMAT_S8_UINT_Z24_UNORM ***/
179
180 /**
181 * Return Z component as four float in [0,1]. Stencil part ignored.
182 */
183 static void
z24s8_get_tile_rgba(const unsigned * src,unsigned w,unsigned h,float * p,unsigned dst_stride)184 z24s8_get_tile_rgba(const unsigned *src,
185 unsigned w, unsigned h,
186 float *p,
187 unsigned dst_stride)
188 {
189 const double scale = 1.0 / ((1 << 24) - 1);
190 unsigned i, j;
191
192 for (i = 0; i < h; i++) {
193 float *pRow = p;
194 for (j = 0; j < w; j++, pRow += 4) {
195 pRow[0] =
196 pRow[1] =
197 pRow[2] =
198 pRow[3] = (float) (scale * (*src++ >> 8));
199 }
200 p += dst_stride;
201 }
202 }
203
204 /*** PIPE_FORMAT_S8X24_UINT ***/
205
206 /**
207 * Return S component as four uint32_t in [0..255]. Z part ignored.
208 */
209 static void
s8x24_get_tile_rgba(const unsigned * src,unsigned w,unsigned h,float * p,unsigned dst_stride)210 s8x24_get_tile_rgba(const unsigned *src,
211 unsigned w, unsigned h,
212 float *p,
213 unsigned dst_stride)
214 {
215 unsigned i, j;
216
217 for (i = 0; i < h; i++) {
218 uint32_t *pRow = (uint32_t *)p;
219
220 for (j = 0; j < w; j++, pRow += 4) {
221 pRow[0] =
222 pRow[1] =
223 pRow[2] =
224 pRow[3] = ((*src++ >> 24) & 0xff);
225 }
226
227 p += dst_stride;
228 }
229 }
230
231 /*** PIPE_FORMAT_X24S8_UINT ***/
232
233 /**
234 * Return S component as four uint32_t in [0..255]. Z part ignored.
235 */
236 static void
x24s8_get_tile_rgba(const unsigned * src,unsigned w,unsigned h,float * p,unsigned dst_stride)237 x24s8_get_tile_rgba(const unsigned *src,
238 unsigned w, unsigned h,
239 float *p,
240 unsigned dst_stride)
241 {
242 unsigned i, j;
243
244 for (i = 0; i < h; i++) {
245 uint32_t *pRow = (uint32_t *)p;
246 for (j = 0; j < w; j++, pRow += 4) {
247 pRow[0] =
248 pRow[1] =
249 pRow[2] =
250 pRow[3] = (*src++ & 0xff);
251 }
252 p += dst_stride;
253 }
254 }
255
256
257 /**
258 * Return S component as four uint32_t in [0..255]. Z part ignored.
259 */
260 static void
s8_get_tile_rgba(const unsigned char * src,unsigned w,unsigned h,float * p,unsigned dst_stride)261 s8_get_tile_rgba(const unsigned char *src,
262 unsigned w, unsigned h,
263 float *p,
264 unsigned dst_stride)
265 {
266 unsigned i, j;
267
268 for (i = 0; i < h; i++) {
269 uint32_t *pRow = (uint32_t *)p;
270 for (j = 0; j < w; j++, pRow += 4) {
271 pRow[0] =
272 pRow[1] =
273 pRow[2] =
274 pRow[3] = (*src++ & 0xff);
275 }
276 p += dst_stride;
277 }
278 }
279
280 /*** PIPE_FORMAT_Z32_FLOAT ***/
281
282 /**
283 * Return each Z value as four floats in [0,1].
284 */
285 static void
z32f_get_tile_rgba(const float * src,unsigned w,unsigned h,float * p,unsigned dst_stride)286 z32f_get_tile_rgba(const float *src,
287 unsigned w, unsigned h,
288 float *p,
289 unsigned dst_stride)
290 {
291 unsigned i, j;
292
293 for (i = 0; i < h; i++) {
294 float *pRow = p;
295 for (j = 0; j < w; j++, pRow += 4) {
296 pRow[0] =
297 pRow[1] =
298 pRow[2] =
299 pRow[3] = *src++;
300 }
301 p += dst_stride;
302 }
303 }
304
305 /*** PIPE_FORMAT_Z32_FLOAT_S8X24_UINT ***/
306
307 /**
308 * Return each Z value as four floats in [0,1].
309 */
310 static void
z32f_x24s8_get_tile_rgba(const float * src,unsigned w,unsigned h,float * p,unsigned dst_stride)311 z32f_x24s8_get_tile_rgba(const float *src,
312 unsigned w, unsigned h,
313 float *p,
314 unsigned dst_stride)
315 {
316 unsigned i, j;
317
318 for (i = 0; i < h; i++) {
319 float *pRow = p;
320 for (j = 0; j < w; j++, pRow += 4) {
321 pRow[0] =
322 pRow[1] =
323 pRow[2] =
324 pRow[3] = *src;
325 src += 2;
326 }
327 p += dst_stride;
328 }
329 }
330
331 /*** PIPE_FORMAT_X32_S8X24_UINT ***/
332
333 /**
334 * Return S component as four uint32_t in [0..255]. Z part ignored.
335 */
336 static void
x32_s8_get_tile_rgba(const unsigned * src,unsigned w,unsigned h,float * p,unsigned dst_stride)337 x32_s8_get_tile_rgba(const unsigned *src,
338 unsigned w, unsigned h,
339 float *p,
340 unsigned dst_stride)
341 {
342 unsigned i, j;
343
344 for (i = 0; i < h; i++) {
345 uint32_t *pRow = (uint32_t *)p;
346 for (j = 0; j < w; j++, pRow += 4) {
347 src++;
348 pRow[0] =
349 pRow[1] =
350 pRow[2] =
351 pRow[3] = (*src++ & 0xff);
352 }
353 p += dst_stride;
354 }
355 }
356
357 void
pipe_put_tile_rgba(struct pipe_transfer * pt,void * dst,uint x,uint y,uint w,uint h,enum pipe_format format,const void * p)358 pipe_put_tile_rgba(struct pipe_transfer *pt,
359 void *dst,
360 uint x, uint y, uint w, uint h,
361 enum pipe_format format, const void *p)
362 {
363 unsigned src_stride = w * 4;
364
365 if (u_clip_tile(x, y, &w, &h, &pt->box))
366 return;
367
368 /* While we do generate RGBA tiles for z/s for softpipe's texture fetch
369 * path, we never have to store from "RGBA" to Z/S.
370 */
371 if (util_format_is_depth_or_stencil(format))
372 return;
373
374 util_format_write_4(format,
375 p, src_stride * sizeof(float),
376 dst, pt->stride,
377 x, y, w, h);
378 }
379
380 void
pipe_get_tile_rgba(struct pipe_transfer * pt,const void * src,uint x,uint y,uint w,uint h,enum pipe_format format,void * dst)381 pipe_get_tile_rgba(struct pipe_transfer *pt,
382 const void *src,
383 uint x, uint y, uint w, uint h,
384 enum pipe_format format,
385 void *dst)
386 {
387 unsigned dst_stride = w * 4;
388 void *packed;
389
390 if (u_clip_tile(x, y, &w, &h, &pt->box)) {
391 return;
392 }
393
394 packed = MALLOC(util_format_get_nblocks(format, w, h) * util_format_get_blocksize(format));
395 if (!packed) {
396 return;
397 }
398
399 if (format == PIPE_FORMAT_UYVY || format == PIPE_FORMAT_YUYV) {
400 assert((x & 1) == 0);
401 }
402
403 pipe_get_tile_raw(pt, src, x, y, w, h, packed, 0);
404
405 switch (format) {
406 case PIPE_FORMAT_Z16_UNORM:
407 z16_get_tile_rgba((ushort *) packed, w, h, dst, dst_stride);
408 break;
409 case PIPE_FORMAT_Z32_UNORM:
410 z32_get_tile_rgba((unsigned *) packed, w, h, dst, dst_stride);
411 break;
412 case PIPE_FORMAT_Z24_UNORM_S8_UINT:
413 case PIPE_FORMAT_Z24X8_UNORM:
414 s8z24_get_tile_rgba((unsigned *) packed, w, h, dst, dst_stride);
415 break;
416 case PIPE_FORMAT_S8_UINT:
417 s8_get_tile_rgba((unsigned char *) packed, w, h, dst, dst_stride);
418 break;
419 case PIPE_FORMAT_X24S8_UINT:
420 s8x24_get_tile_rgba((unsigned *) packed, w, h, dst, dst_stride);
421 break;
422 case PIPE_FORMAT_S8_UINT_Z24_UNORM:
423 case PIPE_FORMAT_X8Z24_UNORM:
424 z24s8_get_tile_rgba((unsigned *) packed, w, h, dst, dst_stride);
425 break;
426 case PIPE_FORMAT_S8X24_UINT:
427 x24s8_get_tile_rgba((unsigned *) packed, w, h, dst, dst_stride);
428 break;
429 case PIPE_FORMAT_Z32_FLOAT:
430 z32f_get_tile_rgba((float *) packed, w, h, dst, dst_stride);
431 break;
432 case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
433 z32f_x24s8_get_tile_rgba((float *) packed, w, h, dst, dst_stride);
434 break;
435 case PIPE_FORMAT_X32_S8X24_UINT:
436 x32_s8_get_tile_rgba((unsigned *) packed, w, h, dst, dst_stride);
437 break;
438 default:
439 util_format_read_4(format,
440 dst, dst_stride * sizeof(float),
441 packed, util_format_get_stride(format, w),
442 0, 0, w, h);
443 }
444
445 FREE(packed);
446 }
447