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gallium: add usage parameter to pipe_buffer_create
[mesa.git] / src / gallium / auxiliary / util / u_gen_mipmap.c
1 /**************************************************************************
2 *
3 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * All Rights Reserved.
5 * Copyright 2008 VMware, Inc. All rights reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
17 * of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 **************************************************************************/
28
29 /**
30 * @file
31 * Mipmap generation utility
32 *
33 * @author Brian Paul
34 */
35
36
37 #include "pipe/p_context.h"
38 #include "util/u_debug.h"
39 #include "pipe/p_defines.h"
40 #include "util/u_inlines.h"
41 #include "pipe/p_shader_tokens.h"
42 #include "pipe/p_state.h"
43
44 #include "util/u_format.h"
45 #include "util/u_memory.h"
46 #include "util/u_draw_quad.h"
47 #include "util/u_gen_mipmap.h"
48 #include "util/u_simple_shaders.h"
49 #include "util/u_math.h"
50 #include "util/u_texture.h"
51 #include "util/u_half.h"
52 #include "util/u_surface.h"
53
54 #include "cso_cache/cso_context.h"
55
56
57 struct gen_mipmap_state
58 {
59 struct pipe_context *pipe;
60 struct cso_context *cso;
61
62 struct pipe_blend_state blend;
63 struct pipe_depth_stencil_alpha_state depthstencil;
64 struct pipe_rasterizer_state rasterizer;
65 struct pipe_sampler_state sampler;
66 struct pipe_clip_state clip;
67 struct pipe_vertex_element velem[2];
68
69 void *vs;
70 void *fs1d, *fs2d, *fs3d, *fsCube;
71
72 struct pipe_resource *vbuf; /**< quad vertices */
73 unsigned vbuf_slot;
74
75 float vertices[4][2][4]; /**< vertex/texcoords for quad */
76 };
77
78
79
80 enum dtype
81 {
82 DTYPE_UBYTE,
83 DTYPE_UBYTE_3_3_2,
84 DTYPE_USHORT,
85 DTYPE_USHORT_4_4_4_4,
86 DTYPE_USHORT_5_6_5,
87 DTYPE_USHORT_1_5_5_5_REV,
88 DTYPE_UINT,
89 DTYPE_FLOAT,
90 DTYPE_HALF_FLOAT
91 };
92
93
94 typedef uint16_t half_float;
95
96
97 /**
98 * \name Support macros for do_row and do_row_3d
99 *
100 * The macro madness is here for two reasons. First, it compacts the code
101 * slightly. Second, it makes it much easier to adjust the specifics of the
102 * filter to tune the rounding characteristics.
103 */
104 /*@{*/
105 #define DECLARE_ROW_POINTERS(t, e) \
106 const t(*rowA)[e] = (const t(*)[e]) srcRowA; \
107 const t(*rowB)[e] = (const t(*)[e]) srcRowB; \
108 const t(*rowC)[e] = (const t(*)[e]) srcRowC; \
109 const t(*rowD)[e] = (const t(*)[e]) srcRowD; \
110 t(*dst)[e] = (t(*)[e]) dstRow
111
112 #define DECLARE_ROW_POINTERS0(t) \
113 const t *rowA = (const t *) srcRowA; \
114 const t *rowB = (const t *) srcRowB; \
115 const t *rowC = (const t *) srcRowC; \
116 const t *rowD = (const t *) srcRowD; \
117 t *dst = (t *) dstRow
118
119 #define FILTER_SUM_3D(Aj, Ak, Bj, Bk, Cj, Ck, Dj, Dk) \
120 ((unsigned) Aj + (unsigned) Ak \
121 + (unsigned) Bj + (unsigned) Bk \
122 + (unsigned) Cj + (unsigned) Ck \
123 + (unsigned) Dj + (unsigned) Dk \
124 + 4) >> 3
125
126 #define FILTER_3D(e) \
127 do { \
128 dst[i][e] = FILTER_SUM_3D(rowA[j][e], rowA[k][e], \
129 rowB[j][e], rowB[k][e], \
130 rowC[j][e], rowC[k][e], \
131 rowD[j][e], rowD[k][e]); \
132 } while(0)
133
134 #define FILTER_F_3D(e) \
135 do { \
136 dst[i][e] = (rowA[j][e] + rowA[k][e] \
137 + rowB[j][e] + rowB[k][e] \
138 + rowC[j][e] + rowC[k][e] \
139 + rowD[j][e] + rowD[k][e]) * 0.125F; \
140 } while(0)
141
142 #define FILTER_HF_3D(e) \
143 do { \
144 const float aj = util_half_to_float(rowA[j][e]); \
145 const float ak = util_half_to_float(rowA[k][e]); \
146 const float bj = util_half_to_float(rowB[j][e]); \
147 const float bk = util_half_to_float(rowB[k][e]); \
148 const float cj = util_half_to_float(rowC[j][e]); \
149 const float ck = util_half_to_float(rowC[k][e]); \
150 const float dj = util_half_to_float(rowD[j][e]); \
151 const float dk = util_half_to_float(rowD[k][e]); \
152 dst[i][e] = util_float_to_half((aj + ak + bj + bk + cj + ck + dj + dk) \
153 * 0.125F); \
154 } while(0)
155 /*@}*/
156
157
158 /**
159 * Average together two rows of a source image to produce a single new
160 * row in the dest image. It's legal for the two source rows to point
161 * to the same data. The source width must be equal to either the
162 * dest width or two times the dest width.
163 * \param datatype GL_UNSIGNED_BYTE, GL_UNSIGNED_SHORT, GL_FLOAT, etc.
164 * \param comps number of components per pixel (1..4)
165 */
166 static void
167 do_row(enum dtype datatype, uint comps, int srcWidth,
168 const void *srcRowA, const void *srcRowB,
169 int dstWidth, void *dstRow)
170 {
171 const uint k0 = (srcWidth == dstWidth) ? 0 : 1;
172 const uint colStride = (srcWidth == dstWidth) ? 1 : 2;
173
174 assert(comps >= 1);
175 assert(comps <= 4);
176
177 /* This assertion is no longer valid with non-power-of-2 textures
178 assert(srcWidth == dstWidth || srcWidth == 2 * dstWidth);
179 */
180
181 if (datatype == DTYPE_UBYTE && comps == 4) {
182 uint i, j, k;
183 const ubyte(*rowA)[4] = (const ubyte(*)[4]) srcRowA;
184 const ubyte(*rowB)[4] = (const ubyte(*)[4]) srcRowB;
185 ubyte(*dst)[4] = (ubyte(*)[4]) dstRow;
186 for (i = j = 0, k = k0; i < (uint) dstWidth;
187 i++, j += colStride, k += colStride) {
188 dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4;
189 dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4;
190 dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4;
191 dst[i][3] = (rowA[j][3] + rowA[k][3] + rowB[j][3] + rowB[k][3]) / 4;
192 }
193 }
194 else if (datatype == DTYPE_UBYTE && comps == 3) {
195 uint i, j, k;
196 const ubyte(*rowA)[3] = (const ubyte(*)[3]) srcRowA;
197 const ubyte(*rowB)[3] = (const ubyte(*)[3]) srcRowB;
198 ubyte(*dst)[3] = (ubyte(*)[3]) dstRow;
199 for (i = j = 0, k = k0; i < (uint) dstWidth;
200 i++, j += colStride, k += colStride) {
201 dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4;
202 dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4;
203 dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4;
204 }
205 }
206 else if (datatype == DTYPE_UBYTE && comps == 2) {
207 uint i, j, k;
208 const ubyte(*rowA)[2] = (const ubyte(*)[2]) srcRowA;
209 const ubyte(*rowB)[2] = (const ubyte(*)[2]) srcRowB;
210 ubyte(*dst)[2] = (ubyte(*)[2]) dstRow;
211 for (i = j = 0, k = k0; i < (uint) dstWidth;
212 i++, j += colStride, k += colStride) {
213 dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) >> 2;
214 dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) >> 2;
215 }
216 }
217 else if (datatype == DTYPE_UBYTE && comps == 1) {
218 uint i, j, k;
219 const ubyte *rowA = (const ubyte *) srcRowA;
220 const ubyte *rowB = (const ubyte *) srcRowB;
221 ubyte *dst = (ubyte *) dstRow;
222 for (i = j = 0, k = k0; i < (uint) dstWidth;
223 i++, j += colStride, k += colStride) {
224 dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) >> 2;
225 }
226 }
227
228 else if (datatype == DTYPE_USHORT && comps == 4) {
229 uint i, j, k;
230 const ushort(*rowA)[4] = (const ushort(*)[4]) srcRowA;
231 const ushort(*rowB)[4] = (const ushort(*)[4]) srcRowB;
232 ushort(*dst)[4] = (ushort(*)[4]) dstRow;
233 for (i = j = 0, k = k0; i < (uint) dstWidth;
234 i++, j += colStride, k += colStride) {
235 dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4;
236 dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4;
237 dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4;
238 dst[i][3] = (rowA[j][3] + rowA[k][3] + rowB[j][3] + rowB[k][3]) / 4;
239 }
240 }
241 else if (datatype == DTYPE_USHORT && comps == 3) {
242 uint i, j, k;
243 const ushort(*rowA)[3] = (const ushort(*)[3]) srcRowA;
244 const ushort(*rowB)[3] = (const ushort(*)[3]) srcRowB;
245 ushort(*dst)[3] = (ushort(*)[3]) dstRow;
246 for (i = j = 0, k = k0; i < (uint) dstWidth;
247 i++, j += colStride, k += colStride) {
248 dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4;
249 dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4;
250 dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4;
251 }
252 }
253 else if (datatype == DTYPE_USHORT && comps == 2) {
254 uint i, j, k;
255 const ushort(*rowA)[2] = (const ushort(*)[2]) srcRowA;
256 const ushort(*rowB)[2] = (const ushort(*)[2]) srcRowB;
257 ushort(*dst)[2] = (ushort(*)[2]) dstRow;
258 for (i = j = 0, k = k0; i < (uint) dstWidth;
259 i++, j += colStride, k += colStride) {
260 dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4;
261 dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4;
262 }
263 }
264 else if (datatype == DTYPE_USHORT && comps == 1) {
265 uint i, j, k;
266 const ushort *rowA = (const ushort *) srcRowA;
267 const ushort *rowB = (const ushort *) srcRowB;
268 ushort *dst = (ushort *) dstRow;
269 for (i = j = 0, k = k0; i < (uint) dstWidth;
270 i++, j += colStride, k += colStride) {
271 dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) / 4;
272 }
273 }
274
275 else if (datatype == DTYPE_FLOAT && comps == 4) {
276 uint i, j, k;
277 const float(*rowA)[4] = (const float(*)[4]) srcRowA;
278 const float(*rowB)[4] = (const float(*)[4]) srcRowB;
279 float(*dst)[4] = (float(*)[4]) dstRow;
280 for (i = j = 0, k = k0; i < (uint) dstWidth;
281 i++, j += colStride, k += colStride) {
282 dst[i][0] = (rowA[j][0] + rowA[k][0] +
283 rowB[j][0] + rowB[k][0]) * 0.25F;
284 dst[i][1] = (rowA[j][1] + rowA[k][1] +
285 rowB[j][1] + rowB[k][1]) * 0.25F;
286 dst[i][2] = (rowA[j][2] + rowA[k][2] +
287 rowB[j][2] + rowB[k][2]) * 0.25F;
288 dst[i][3] = (rowA[j][3] + rowA[k][3] +
289 rowB[j][3] + rowB[k][3]) * 0.25F;
290 }
291 }
292 else if (datatype == DTYPE_FLOAT && comps == 3) {
293 uint i, j, k;
294 const float(*rowA)[3] = (const float(*)[3]) srcRowA;
295 const float(*rowB)[3] = (const float(*)[3]) srcRowB;
296 float(*dst)[3] = (float(*)[3]) dstRow;
297 for (i = j = 0, k = k0; i < (uint) dstWidth;
298 i++, j += colStride, k += colStride) {
299 dst[i][0] = (rowA[j][0] + rowA[k][0] +
300 rowB[j][0] + rowB[k][0]) * 0.25F;
301 dst[i][1] = (rowA[j][1] + rowA[k][1] +
302 rowB[j][1] + rowB[k][1]) * 0.25F;
303 dst[i][2] = (rowA[j][2] + rowA[k][2] +
304 rowB[j][2] + rowB[k][2]) * 0.25F;
305 }
306 }
307 else if (datatype == DTYPE_FLOAT && comps == 2) {
308 uint i, j, k;
309 const float(*rowA)[2] = (const float(*)[2]) srcRowA;
310 const float(*rowB)[2] = (const float(*)[2]) srcRowB;
311 float(*dst)[2] = (float(*)[2]) dstRow;
312 for (i = j = 0, k = k0; i < (uint) dstWidth;
313 i++, j += colStride, k += colStride) {
314 dst[i][0] = (rowA[j][0] + rowA[k][0] +
315 rowB[j][0] + rowB[k][0]) * 0.25F;
316 dst[i][1] = (rowA[j][1] + rowA[k][1] +
317 rowB[j][1] + rowB[k][1]) * 0.25F;
318 }
319 }
320 else if (datatype == DTYPE_FLOAT && comps == 1) {
321 uint i, j, k;
322 const float *rowA = (const float *) srcRowA;
323 const float *rowB = (const float *) srcRowB;
324 float *dst = (float *) dstRow;
325 for (i = j = 0, k = k0; i < (uint) dstWidth;
326 i++, j += colStride, k += colStride) {
327 dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) * 0.25F;
328 }
329 }
330
331 else if (datatype == DTYPE_HALF_FLOAT && comps == 4) {
332 uint i, j, k, comp;
333 const half_float(*rowA)[4] = (const half_float(*)[4]) srcRowA;
334 const half_float(*rowB)[4] = (const half_float(*)[4]) srcRowB;
335 half_float(*dst)[4] = (half_float(*)[4]) dstRow;
336 for (i = j = 0, k = k0; i < (uint) dstWidth;
337 i++, j += colStride, k += colStride) {
338 for (comp = 0; comp < 4; comp++) {
339 float aj, ak, bj, bk;
340 aj = util_half_to_float(rowA[j][comp]);
341 ak = util_half_to_float(rowA[k][comp]);
342 bj = util_half_to_float(rowB[j][comp]);
343 bk = util_half_to_float(rowB[k][comp]);
344 dst[i][comp] = util_float_to_half((aj + ak + bj + bk) * 0.25F);
345 }
346 }
347 }
348 else if (datatype == DTYPE_HALF_FLOAT && comps == 3) {
349 uint i, j, k, comp;
350 const half_float(*rowA)[3] = (const half_float(*)[3]) srcRowA;
351 const half_float(*rowB)[3] = (const half_float(*)[3]) srcRowB;
352 half_float(*dst)[3] = (half_float(*)[3]) dstRow;
353 for (i = j = 0, k = k0; i < (uint) dstWidth;
354 i++, j += colStride, k += colStride) {
355 for (comp = 0; comp < 3; comp++) {
356 float aj, ak, bj, bk;
357 aj = util_half_to_float(rowA[j][comp]);
358 ak = util_half_to_float(rowA[k][comp]);
359 bj = util_half_to_float(rowB[j][comp]);
360 bk = util_half_to_float(rowB[k][comp]);
361 dst[i][comp] = util_float_to_half((aj + ak + bj + bk) * 0.25F);
362 }
363 }
364 }
365 else if (datatype == DTYPE_HALF_FLOAT && comps == 2) {
366 uint i, j, k, comp;
367 const half_float(*rowA)[2] = (const half_float(*)[2]) srcRowA;
368 const half_float(*rowB)[2] = (const half_float(*)[2]) srcRowB;
369 half_float(*dst)[2] = (half_float(*)[2]) dstRow;
370 for (i = j = 0, k = k0; i < (uint) dstWidth;
371 i++, j += colStride, k += colStride) {
372 for (comp = 0; comp < 2; comp++) {
373 float aj, ak, bj, bk;
374 aj = util_half_to_float(rowA[j][comp]);
375 ak = util_half_to_float(rowA[k][comp]);
376 bj = util_half_to_float(rowB[j][comp]);
377 bk = util_half_to_float(rowB[k][comp]);
378 dst[i][comp] = util_float_to_half((aj + ak + bj + bk) * 0.25F);
379 }
380 }
381 }
382 else if (datatype == DTYPE_HALF_FLOAT && comps == 1) {
383 uint i, j, k;
384 const half_float *rowA = (const half_float *) srcRowA;
385 const half_float *rowB = (const half_float *) srcRowB;
386 half_float *dst = (half_float *) dstRow;
387 for (i = j = 0, k = k0; i < (uint) dstWidth;
388 i++, j += colStride, k += colStride) {
389 float aj, ak, bj, bk;
390 aj = util_half_to_float(rowA[j]);
391 ak = util_half_to_float(rowA[k]);
392 bj = util_half_to_float(rowB[j]);
393 bk = util_half_to_float(rowB[k]);
394 dst[i] = util_float_to_half((aj + ak + bj + bk) * 0.25F);
395 }
396 }
397
398 else if (datatype == DTYPE_UINT && comps == 1) {
399 uint i, j, k;
400 const uint *rowA = (const uint *) srcRowA;
401 const uint *rowB = (const uint *) srcRowB;
402 uint *dst = (uint *) dstRow;
403 for (i = j = 0, k = k0; i < (uint) dstWidth;
404 i++, j += colStride, k += colStride) {
405 dst[i] = rowA[j] / 4 + rowA[k] / 4 + rowB[j] / 4 + rowB[k] / 4;
406 }
407 }
408
409 else if (datatype == DTYPE_USHORT_5_6_5 && comps == 3) {
410 uint i, j, k;
411 const ushort *rowA = (const ushort *) srcRowA;
412 const ushort *rowB = (const ushort *) srcRowB;
413 ushort *dst = (ushort *) dstRow;
414 for (i = j = 0, k = k0; i < (uint) dstWidth;
415 i++, j += colStride, k += colStride) {
416 const int rowAr0 = rowA[j] & 0x1f;
417 const int rowAr1 = rowA[k] & 0x1f;
418 const int rowBr0 = rowB[j] & 0x1f;
419 const int rowBr1 = rowB[k] & 0x1f;
420 const int rowAg0 = (rowA[j] >> 5) & 0x3f;
421 const int rowAg1 = (rowA[k] >> 5) & 0x3f;
422 const int rowBg0 = (rowB[j] >> 5) & 0x3f;
423 const int rowBg1 = (rowB[k] >> 5) & 0x3f;
424 const int rowAb0 = (rowA[j] >> 11) & 0x1f;
425 const int rowAb1 = (rowA[k] >> 11) & 0x1f;
426 const int rowBb0 = (rowB[j] >> 11) & 0x1f;
427 const int rowBb1 = (rowB[k] >> 11) & 0x1f;
428 const int red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2;
429 const int green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2;
430 const int blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2;
431 dst[i] = (blue << 11) | (green << 5) | red;
432 }
433 }
434 else if (datatype == DTYPE_USHORT_4_4_4_4 && comps == 4) {
435 uint i, j, k;
436 const ushort *rowA = (const ushort *) srcRowA;
437 const ushort *rowB = (const ushort *) srcRowB;
438 ushort *dst = (ushort *) dstRow;
439 for (i = j = 0, k = k0; i < (uint) dstWidth;
440 i++, j += colStride, k += colStride) {
441 const int rowAr0 = rowA[j] & 0xf;
442 const int rowAr1 = rowA[k] & 0xf;
443 const int rowBr0 = rowB[j] & 0xf;
444 const int rowBr1 = rowB[k] & 0xf;
445 const int rowAg0 = (rowA[j] >> 4) & 0xf;
446 const int rowAg1 = (rowA[k] >> 4) & 0xf;
447 const int rowBg0 = (rowB[j] >> 4) & 0xf;
448 const int rowBg1 = (rowB[k] >> 4) & 0xf;
449 const int rowAb0 = (rowA[j] >> 8) & 0xf;
450 const int rowAb1 = (rowA[k] >> 8) & 0xf;
451 const int rowBb0 = (rowB[j] >> 8) & 0xf;
452 const int rowBb1 = (rowB[k] >> 8) & 0xf;
453 const int rowAa0 = (rowA[j] >> 12) & 0xf;
454 const int rowAa1 = (rowA[k] >> 12) & 0xf;
455 const int rowBa0 = (rowB[j] >> 12) & 0xf;
456 const int rowBa1 = (rowB[k] >> 12) & 0xf;
457 const int red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2;
458 const int green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2;
459 const int blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2;
460 const int alpha = (rowAa0 + rowAa1 + rowBa0 + rowBa1) >> 2;
461 dst[i] = (alpha << 12) | (blue << 8) | (green << 4) | red;
462 }
463 }
464 else if (datatype == DTYPE_USHORT_1_5_5_5_REV && comps == 4) {
465 uint i, j, k;
466 const ushort *rowA = (const ushort *) srcRowA;
467 const ushort *rowB = (const ushort *) srcRowB;
468 ushort *dst = (ushort *) dstRow;
469 for (i = j = 0, k = k0; i < (uint) dstWidth;
470 i++, j += colStride, k += colStride) {
471 const int rowAr0 = rowA[j] & 0x1f;
472 const int rowAr1 = rowA[k] & 0x1f;
473 const int rowBr0 = rowB[j] & 0x1f;
474 const int rowBr1 = rowB[k] & 0x1f;
475 const int rowAg0 = (rowA[j] >> 5) & 0x1f;
476 const int rowAg1 = (rowA[k] >> 5) & 0x1f;
477 const int rowBg0 = (rowB[j] >> 5) & 0x1f;
478 const int rowBg1 = (rowB[k] >> 5) & 0x1f;
479 const int rowAb0 = (rowA[j] >> 10) & 0x1f;
480 const int rowAb1 = (rowA[k] >> 10) & 0x1f;
481 const int rowBb0 = (rowB[j] >> 10) & 0x1f;
482 const int rowBb1 = (rowB[k] >> 10) & 0x1f;
483 const int rowAa0 = (rowA[j] >> 15) & 0x1;
484 const int rowAa1 = (rowA[k] >> 15) & 0x1;
485 const int rowBa0 = (rowB[j] >> 15) & 0x1;
486 const int rowBa1 = (rowB[k] >> 15) & 0x1;
487 const int red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2;
488 const int green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2;
489 const int blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2;
490 const int alpha = (rowAa0 + rowAa1 + rowBa0 + rowBa1) >> 2;
491 dst[i] = (alpha << 15) | (blue << 10) | (green << 5) | red;
492 }
493 }
494 else if (datatype == DTYPE_UBYTE_3_3_2 && comps == 3) {
495 uint i, j, k;
496 const ubyte *rowA = (const ubyte *) srcRowA;
497 const ubyte *rowB = (const ubyte *) srcRowB;
498 ubyte *dst = (ubyte *) dstRow;
499 for (i = j = 0, k = k0; i < (uint) dstWidth;
500 i++, j += colStride, k += colStride) {
501 const int rowAr0 = rowA[j] & 0x3;
502 const int rowAr1 = rowA[k] & 0x3;
503 const int rowBr0 = rowB[j] & 0x3;
504 const int rowBr1 = rowB[k] & 0x3;
505 const int rowAg0 = (rowA[j] >> 2) & 0x7;
506 const int rowAg1 = (rowA[k] >> 2) & 0x7;
507 const int rowBg0 = (rowB[j] >> 2) & 0x7;
508 const int rowBg1 = (rowB[k] >> 2) & 0x7;
509 const int rowAb0 = (rowA[j] >> 5) & 0x7;
510 const int rowAb1 = (rowA[k] >> 5) & 0x7;
511 const int rowBb0 = (rowB[j] >> 5) & 0x7;
512 const int rowBb1 = (rowB[k] >> 5) & 0x7;
513 const int red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2;
514 const int green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2;
515 const int blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2;
516 dst[i] = (blue << 5) | (green << 2) | red;
517 }
518 }
519 else {
520 debug_printf("bad format in do_row()");
521 }
522 }
523
524
525 /**
526 * Average together four rows of a source image to produce a single new
527 * row in the dest image. It's legal for the two source rows to point
528 * to the same data. The source width must be equal to either the
529 * dest width or two times the dest width.
530 *
531 * \param datatype GL pixel type \c GL_UNSIGNED_BYTE, \c GL_UNSIGNED_SHORT,
532 * \c GL_FLOAT, etc.
533 * \param comps number of components per pixel (1..4)
534 * \param srcWidth Width of a row in the source data
535 * \param srcRowA Pointer to one of the rows of source data
536 * \param srcRowB Pointer to one of the rows of source data
537 * \param srcRowC Pointer to one of the rows of source data
538 * \param srcRowD Pointer to one of the rows of source data
539 * \param dstWidth Width of a row in the destination data
540 * \param srcRowA Pointer to the row of destination data
541 */
542 static void
543 do_row_3D(enum dtype datatype, uint comps, int srcWidth,
544 const void *srcRowA, const void *srcRowB,
545 const void *srcRowC, const void *srcRowD,
546 int dstWidth, void *dstRow)
547 {
548 const uint k0 = (srcWidth == dstWidth) ? 0 : 1;
549 const uint colStride = (srcWidth == dstWidth) ? 1 : 2;
550 uint i, j, k;
551
552 assert(comps >= 1);
553 assert(comps <= 4);
554
555 if ((datatype == DTYPE_UBYTE) && (comps == 4)) {
556 DECLARE_ROW_POINTERS(ubyte, 4);
557
558 for (i = j = 0, k = k0; i < (uint) dstWidth;
559 i++, j += colStride, k += colStride) {
560 FILTER_3D(0);
561 FILTER_3D(1);
562 FILTER_3D(2);
563 FILTER_3D(3);
564 }
565 }
566 else if ((datatype == DTYPE_UBYTE) && (comps == 3)) {
567 DECLARE_ROW_POINTERS(ubyte, 3);
568
569 for (i = j = 0, k = k0; i < (uint) dstWidth;
570 i++, j += colStride, k += colStride) {
571 FILTER_3D(0);
572 FILTER_3D(1);
573 FILTER_3D(2);
574 }
575 }
576 else if ((datatype == DTYPE_UBYTE) && (comps == 2)) {
577 DECLARE_ROW_POINTERS(ubyte, 2);
578
579 for (i = j = 0, k = k0; i < (uint) dstWidth;
580 i++, j += colStride, k += colStride) {
581 FILTER_3D(0);
582 FILTER_3D(1);
583 }
584 }
585 else if ((datatype == DTYPE_UBYTE) && (comps == 1)) {
586 DECLARE_ROW_POINTERS(ubyte, 1);
587
588 for (i = j = 0, k = k0; i < (uint) dstWidth;
589 i++, j += colStride, k += colStride) {
590 FILTER_3D(0);
591 }
592 }
593 else if ((datatype == DTYPE_USHORT) && (comps == 4)) {
594 DECLARE_ROW_POINTERS(ushort, 4);
595
596 for (i = j = 0, k = k0; i < (uint) dstWidth;
597 i++, j += colStride, k += colStride) {
598 FILTER_3D(0);
599 FILTER_3D(1);
600 FILTER_3D(2);
601 FILTER_3D(3);
602 }
603 }
604 else if ((datatype == DTYPE_USHORT) && (comps == 3)) {
605 DECLARE_ROW_POINTERS(ushort, 3);
606
607 for (i = j = 0, k = k0; i < (uint) dstWidth;
608 i++, j += colStride, k += colStride) {
609 FILTER_3D(0);
610 FILTER_3D(1);
611 FILTER_3D(2);
612 }
613 }
614 else if ((datatype == DTYPE_USHORT) && (comps == 2)) {
615 DECLARE_ROW_POINTERS(ushort, 2);
616
617 for (i = j = 0, k = k0; i < (uint) dstWidth;
618 i++, j += colStride, k += colStride) {
619 FILTER_3D(0);
620 FILTER_3D(1);
621 }
622 }
623 else if ((datatype == DTYPE_USHORT) && (comps == 1)) {
624 DECLARE_ROW_POINTERS(ushort, 1);
625
626 for (i = j = 0, k = k0; i < (uint) dstWidth;
627 i++, j += colStride, k += colStride) {
628 FILTER_3D(0);
629 }
630 }
631 else if ((datatype == DTYPE_FLOAT) && (comps == 4)) {
632 DECLARE_ROW_POINTERS(float, 4);
633
634 for (i = j = 0, k = k0; i < (uint) dstWidth;
635 i++, j += colStride, k += colStride) {
636 FILTER_F_3D(0);
637 FILTER_F_3D(1);
638 FILTER_F_3D(2);
639 FILTER_F_3D(3);
640 }
641 }
642 else if ((datatype == DTYPE_FLOAT) && (comps == 3)) {
643 DECLARE_ROW_POINTERS(float, 3);
644
645 for (i = j = 0, k = k0; i < (uint) dstWidth;
646 i++, j += colStride, k += colStride) {
647 FILTER_F_3D(0);
648 FILTER_F_3D(1);
649 FILTER_F_3D(2);
650 }
651 }
652 else if ((datatype == DTYPE_FLOAT) && (comps == 2)) {
653 DECLARE_ROW_POINTERS(float, 2);
654
655 for (i = j = 0, k = k0; i < (uint) dstWidth;
656 i++, j += colStride, k += colStride) {
657 FILTER_F_3D(0);
658 FILTER_F_3D(1);
659 }
660 }
661 else if ((datatype == DTYPE_FLOAT) && (comps == 1)) {
662 DECLARE_ROW_POINTERS(float, 1);
663
664 for (i = j = 0, k = k0; i < (uint) dstWidth;
665 i++, j += colStride, k += colStride) {
666 FILTER_F_3D(0);
667 }
668 }
669 else if ((datatype == DTYPE_HALF_FLOAT) && (comps == 4)) {
670 DECLARE_ROW_POINTERS(half_float, 4);
671
672 for (i = j = 0, k = k0; i < (uint) dstWidth;
673 i++, j += colStride, k += colStride) {
674 FILTER_HF_3D(0);
675 FILTER_HF_3D(1);
676 FILTER_HF_3D(2);
677 FILTER_HF_3D(3);
678 }
679 }
680 else if ((datatype == DTYPE_HALF_FLOAT) && (comps == 3)) {
681 DECLARE_ROW_POINTERS(half_float, 4);
682
683 for (i = j = 0, k = k0; i < (uint) dstWidth;
684 i++, j += colStride, k += colStride) {
685 FILTER_HF_3D(0);
686 FILTER_HF_3D(1);
687 FILTER_HF_3D(2);
688 }
689 }
690 else if ((datatype == DTYPE_HALF_FLOAT) && (comps == 2)) {
691 DECLARE_ROW_POINTERS(half_float, 4);
692
693 for (i = j = 0, k = k0; i < (uint) dstWidth;
694 i++, j += colStride, k += colStride) {
695 FILTER_HF_3D(0);
696 FILTER_HF_3D(1);
697 }
698 }
699 else if ((datatype == DTYPE_HALF_FLOAT) && (comps == 1)) {
700 DECLARE_ROW_POINTERS(half_float, 4);
701
702 for (i = j = 0, k = k0; i < (uint) dstWidth;
703 i++, j += colStride, k += colStride) {
704 FILTER_HF_3D(0);
705 }
706 }
707 else if ((datatype == DTYPE_UINT) && (comps == 1)) {
708 const uint *rowA = (const uint *) srcRowA;
709 const uint *rowB = (const uint *) srcRowB;
710 const uint *rowC = (const uint *) srcRowC;
711 const uint *rowD = (const uint *) srcRowD;
712 float *dst = (float *) dstRow;
713
714 for (i = j = 0, k = k0; i < (uint) dstWidth;
715 i++, j += colStride, k += colStride) {
716 const uint64_t tmp = (((uint64_t) rowA[j] + (uint64_t) rowA[k])
717 + ((uint64_t) rowB[j] + (uint64_t) rowB[k])
718 + ((uint64_t) rowC[j] + (uint64_t) rowC[k])
719 + ((uint64_t) rowD[j] + (uint64_t) rowD[k]));
720 dst[i] = (float)((double) tmp * 0.125);
721 }
722 }
723 else if ((datatype == DTYPE_USHORT_5_6_5) && (comps == 3)) {
724 DECLARE_ROW_POINTERS0(ushort);
725
726 for (i = j = 0, k = k0; i < (uint) dstWidth;
727 i++, j += colStride, k += colStride) {
728 const int rowAr0 = rowA[j] & 0x1f;
729 const int rowAr1 = rowA[k] & 0x1f;
730 const int rowBr0 = rowB[j] & 0x1f;
731 const int rowBr1 = rowB[k] & 0x1f;
732 const int rowCr0 = rowC[j] & 0x1f;
733 const int rowCr1 = rowC[k] & 0x1f;
734 const int rowDr0 = rowD[j] & 0x1f;
735 const int rowDr1 = rowD[k] & 0x1f;
736 const int rowAg0 = (rowA[j] >> 5) & 0x3f;
737 const int rowAg1 = (rowA[k] >> 5) & 0x3f;
738 const int rowBg0 = (rowB[j] >> 5) & 0x3f;
739 const int rowBg1 = (rowB[k] >> 5) & 0x3f;
740 const int rowCg0 = (rowC[j] >> 5) & 0x3f;
741 const int rowCg1 = (rowC[k] >> 5) & 0x3f;
742 const int rowDg0 = (rowD[j] >> 5) & 0x3f;
743 const int rowDg1 = (rowD[k] >> 5) & 0x3f;
744 const int rowAb0 = (rowA[j] >> 11) & 0x1f;
745 const int rowAb1 = (rowA[k] >> 11) & 0x1f;
746 const int rowBb0 = (rowB[j] >> 11) & 0x1f;
747 const int rowBb1 = (rowB[k] >> 11) & 0x1f;
748 const int rowCb0 = (rowC[j] >> 11) & 0x1f;
749 const int rowCb1 = (rowC[k] >> 11) & 0x1f;
750 const int rowDb0 = (rowD[j] >> 11) & 0x1f;
751 const int rowDb1 = (rowD[k] >> 11) & 0x1f;
752 const int r = FILTER_SUM_3D(rowAr0, rowAr1, rowBr0, rowBr1,
753 rowCr0, rowCr1, rowDr0, rowDr1);
754 const int g = FILTER_SUM_3D(rowAg0, rowAg1, rowBg0, rowBg1,
755 rowCg0, rowCg1, rowDg0, rowDg1);
756 const int b = FILTER_SUM_3D(rowAb0, rowAb1, rowBb0, rowBb1,
757 rowCb0, rowCb1, rowDb0, rowDb1);
758 dst[i] = (b << 11) | (g << 5) | r;
759 }
760 }
761 else if ((datatype == DTYPE_USHORT_4_4_4_4) && (comps == 4)) {
762 DECLARE_ROW_POINTERS0(ushort);
763
764 for (i = j = 0, k = k0; i < (uint) dstWidth;
765 i++, j += colStride, k += colStride) {
766 const int rowAr0 = rowA[j] & 0xf;
767 const int rowAr1 = rowA[k] & 0xf;
768 const int rowBr0 = rowB[j] & 0xf;
769 const int rowBr1 = rowB[k] & 0xf;
770 const int rowCr0 = rowC[j] & 0xf;
771 const int rowCr1 = rowC[k] & 0xf;
772 const int rowDr0 = rowD[j] & 0xf;
773 const int rowDr1 = rowD[k] & 0xf;
774 const int rowAg0 = (rowA[j] >> 4) & 0xf;
775 const int rowAg1 = (rowA[k] >> 4) & 0xf;
776 const int rowBg0 = (rowB[j] >> 4) & 0xf;
777 const int rowBg1 = (rowB[k] >> 4) & 0xf;
778 const int rowCg0 = (rowC[j] >> 4) & 0xf;
779 const int rowCg1 = (rowC[k] >> 4) & 0xf;
780 const int rowDg0 = (rowD[j] >> 4) & 0xf;
781 const int rowDg1 = (rowD[k] >> 4) & 0xf;
782 const int rowAb0 = (rowA[j] >> 8) & 0xf;
783 const int rowAb1 = (rowA[k] >> 8) & 0xf;
784 const int rowBb0 = (rowB[j] >> 8) & 0xf;
785 const int rowBb1 = (rowB[k] >> 8) & 0xf;
786 const int rowCb0 = (rowC[j] >> 8) & 0xf;
787 const int rowCb1 = (rowC[k] >> 8) & 0xf;
788 const int rowDb0 = (rowD[j] >> 8) & 0xf;
789 const int rowDb1 = (rowD[k] >> 8) & 0xf;
790 const int rowAa0 = (rowA[j] >> 12) & 0xf;
791 const int rowAa1 = (rowA[k] >> 12) & 0xf;
792 const int rowBa0 = (rowB[j] >> 12) & 0xf;
793 const int rowBa1 = (rowB[k] >> 12) & 0xf;
794 const int rowCa0 = (rowC[j] >> 12) & 0xf;
795 const int rowCa1 = (rowC[k] >> 12) & 0xf;
796 const int rowDa0 = (rowD[j] >> 12) & 0xf;
797 const int rowDa1 = (rowD[k] >> 12) & 0xf;
798 const int r = FILTER_SUM_3D(rowAr0, rowAr1, rowBr0, rowBr1,
799 rowCr0, rowCr1, rowDr0, rowDr1);
800 const int g = FILTER_SUM_3D(rowAg0, rowAg1, rowBg0, rowBg1,
801 rowCg0, rowCg1, rowDg0, rowDg1);
802 const int b = FILTER_SUM_3D(rowAb0, rowAb1, rowBb0, rowBb1,
803 rowCb0, rowCb1, rowDb0, rowDb1);
804 const int a = FILTER_SUM_3D(rowAa0, rowAa1, rowBa0, rowBa1,
805 rowCa0, rowCa1, rowDa0, rowDa1);
806
807 dst[i] = (a << 12) | (b << 8) | (g << 4) | r;
808 }
809 }
810 else if ((datatype == DTYPE_USHORT_1_5_5_5_REV) && (comps == 4)) {
811 DECLARE_ROW_POINTERS0(ushort);
812
813 for (i = j = 0, k = k0; i < (uint) dstWidth;
814 i++, j += colStride, k += colStride) {
815 const int rowAr0 = rowA[j] & 0x1f;
816 const int rowAr1 = rowA[k] & 0x1f;
817 const int rowBr0 = rowB[j] & 0x1f;
818 const int rowBr1 = rowB[k] & 0x1f;
819 const int rowCr0 = rowC[j] & 0x1f;
820 const int rowCr1 = rowC[k] & 0x1f;
821 const int rowDr0 = rowD[j] & 0x1f;
822 const int rowDr1 = rowD[k] & 0x1f;
823 const int rowAg0 = (rowA[j] >> 5) & 0x1f;
824 const int rowAg1 = (rowA[k] >> 5) & 0x1f;
825 const int rowBg0 = (rowB[j] >> 5) & 0x1f;
826 const int rowBg1 = (rowB[k] >> 5) & 0x1f;
827 const int rowCg0 = (rowC[j] >> 5) & 0x1f;
828 const int rowCg1 = (rowC[k] >> 5) & 0x1f;
829 const int rowDg0 = (rowD[j] >> 5) & 0x1f;
830 const int rowDg1 = (rowD[k] >> 5) & 0x1f;
831 const int rowAb0 = (rowA[j] >> 10) & 0x1f;
832 const int rowAb1 = (rowA[k] >> 10) & 0x1f;
833 const int rowBb0 = (rowB[j] >> 10) & 0x1f;
834 const int rowBb1 = (rowB[k] >> 10) & 0x1f;
835 const int rowCb0 = (rowC[j] >> 10) & 0x1f;
836 const int rowCb1 = (rowC[k] >> 10) & 0x1f;
837 const int rowDb0 = (rowD[j] >> 10) & 0x1f;
838 const int rowDb1 = (rowD[k] >> 10) & 0x1f;
839 const int rowAa0 = (rowA[j] >> 15) & 0x1;
840 const int rowAa1 = (rowA[k] >> 15) & 0x1;
841 const int rowBa0 = (rowB[j] >> 15) & 0x1;
842 const int rowBa1 = (rowB[k] >> 15) & 0x1;
843 const int rowCa0 = (rowC[j] >> 15) & 0x1;
844 const int rowCa1 = (rowC[k] >> 15) & 0x1;
845 const int rowDa0 = (rowD[j] >> 15) & 0x1;
846 const int rowDa1 = (rowD[k] >> 15) & 0x1;
847 const int r = FILTER_SUM_3D(rowAr0, rowAr1, rowBr0, rowBr1,
848 rowCr0, rowCr1, rowDr0, rowDr1);
849 const int g = FILTER_SUM_3D(rowAg0, rowAg1, rowBg0, rowBg1,
850 rowCg0, rowCg1, rowDg0, rowDg1);
851 const int b = FILTER_SUM_3D(rowAb0, rowAb1, rowBb0, rowBb1,
852 rowCb0, rowCb1, rowDb0, rowDb1);
853 const int a = FILTER_SUM_3D(rowAa0, rowAa1, rowBa0, rowBa1,
854 rowCa0, rowCa1, rowDa0, rowDa1);
855
856 dst[i] = (a << 15) | (b << 10) | (g << 5) | r;
857 }
858 }
859 else if ((datatype == DTYPE_UBYTE_3_3_2) && (comps == 3)) {
860 DECLARE_ROW_POINTERS0(ushort);
861
862 for (i = j = 0, k = k0; i < (uint) dstWidth;
863 i++, j += colStride, k += colStride) {
864 const int rowAr0 = rowA[j] & 0x3;
865 const int rowAr1 = rowA[k] & 0x3;
866 const int rowBr0 = rowB[j] & 0x3;
867 const int rowBr1 = rowB[k] & 0x3;
868 const int rowCr0 = rowC[j] & 0x3;
869 const int rowCr1 = rowC[k] & 0x3;
870 const int rowDr0 = rowD[j] & 0x3;
871 const int rowDr1 = rowD[k] & 0x3;
872 const int rowAg0 = (rowA[j] >> 2) & 0x7;
873 const int rowAg1 = (rowA[k] >> 2) & 0x7;
874 const int rowBg0 = (rowB[j] >> 2) & 0x7;
875 const int rowBg1 = (rowB[k] >> 2) & 0x7;
876 const int rowCg0 = (rowC[j] >> 2) & 0x7;
877 const int rowCg1 = (rowC[k] >> 2) & 0x7;
878 const int rowDg0 = (rowD[j] >> 2) & 0x7;
879 const int rowDg1 = (rowD[k] >> 2) & 0x7;
880 const int rowAb0 = (rowA[j] >> 5) & 0x7;
881 const int rowAb1 = (rowA[k] >> 5) & 0x7;
882 const int rowBb0 = (rowB[j] >> 5) & 0x7;
883 const int rowBb1 = (rowB[k] >> 5) & 0x7;
884 const int rowCb0 = (rowC[j] >> 5) & 0x7;
885 const int rowCb1 = (rowC[k] >> 5) & 0x7;
886 const int rowDb0 = (rowD[j] >> 5) & 0x7;
887 const int rowDb1 = (rowD[k] >> 5) & 0x7;
888 const int r = FILTER_SUM_3D(rowAr0, rowAr1, rowBr0, rowBr1,
889 rowCr0, rowCr1, rowDr0, rowDr1);
890 const int g = FILTER_SUM_3D(rowAg0, rowAg1, rowBg0, rowBg1,
891 rowCg0, rowCg1, rowDg0, rowDg1);
892 const int b = FILTER_SUM_3D(rowAb0, rowAb1, rowBb0, rowBb1,
893 rowCb0, rowCb1, rowDb0, rowDb1);
894 dst[i] = (b << 5) | (g << 2) | r;
895 }
896 }
897 else {
898 debug_printf("bad format in do_row_3D()");
899 }
900 }
901
902
903
904 static void
905 format_to_type_comps(enum pipe_format pformat,
906 enum dtype *datatype, uint *comps)
907 {
908 /* XXX I think this could be implemented in terms of the pf_*() functions */
909 switch (pformat) {
910 case PIPE_FORMAT_B8G8R8A8_UNORM:
911 case PIPE_FORMAT_B8G8R8X8_UNORM:
912 case PIPE_FORMAT_A8R8G8B8_UNORM:
913 case PIPE_FORMAT_X8R8G8B8_UNORM:
914 case PIPE_FORMAT_A8B8G8R8_SRGB:
915 case PIPE_FORMAT_X8B8G8R8_SRGB:
916 case PIPE_FORMAT_B8G8R8A8_SRGB:
917 case PIPE_FORMAT_B8G8R8X8_SRGB:
918 case PIPE_FORMAT_A8R8G8B8_SRGB:
919 case PIPE_FORMAT_X8R8G8B8_SRGB:
920 case PIPE_FORMAT_R8G8B8_SRGB:
921 *datatype = DTYPE_UBYTE;
922 *comps = 4;
923 return;
924 case PIPE_FORMAT_B5G5R5X1_UNORM:
925 case PIPE_FORMAT_B5G5R5A1_UNORM:
926 *datatype = DTYPE_USHORT_1_5_5_5_REV;
927 *comps = 4;
928 return;
929 case PIPE_FORMAT_B4G4R4A4_UNORM:
930 *datatype = DTYPE_USHORT_4_4_4_4;
931 *comps = 4;
932 return;
933 case PIPE_FORMAT_B5G6R5_UNORM:
934 *datatype = DTYPE_USHORT_5_6_5;
935 *comps = 3;
936 return;
937 case PIPE_FORMAT_L8_UNORM:
938 case PIPE_FORMAT_L8_SRGB:
939 case PIPE_FORMAT_A8_UNORM:
940 case PIPE_FORMAT_I8_UNORM:
941 *datatype = DTYPE_UBYTE;
942 *comps = 1;
943 return;
944 case PIPE_FORMAT_L8A8_UNORM:
945 case PIPE_FORMAT_L8A8_SRGB:
946 *datatype = DTYPE_UBYTE;
947 *comps = 2;
948 return;
949 default:
950 assert(0);
951 *datatype = DTYPE_UBYTE;
952 *comps = 0;
953 break;
954 }
955 }
956
957
958 static void
959 reduce_1d(enum pipe_format pformat,
960 int srcWidth, const ubyte *srcPtr,
961 int dstWidth, ubyte *dstPtr)
962 {
963 enum dtype datatype;
964 uint comps;
965
966 format_to_type_comps(pformat, &datatype, &comps);
967
968 /* we just duplicate the input row, kind of hack, saves code */
969 do_row(datatype, comps,
970 srcWidth, srcPtr, srcPtr,
971 dstWidth, dstPtr);
972 }
973
974
975 /**
976 * Strides are in bytes. If zero, it'll be computed as width * bpp.
977 */
978 static void
979 reduce_2d(enum pipe_format pformat,
980 int srcWidth, int srcHeight,
981 int srcRowStride, const ubyte *srcPtr,
982 int dstWidth, int dstHeight,
983 int dstRowStride, ubyte *dstPtr)
984 {
985 enum dtype datatype;
986 uint comps;
987 const int bpt = util_format_get_blocksize(pformat);
988 const ubyte *srcA, *srcB;
989 ubyte *dst;
990 int row;
991
992 format_to_type_comps(pformat, &datatype, &comps);
993
994 if (!srcRowStride)
995 srcRowStride = bpt * srcWidth;
996
997 if (!dstRowStride)
998 dstRowStride = bpt * dstWidth;
999
1000 /* Compute src and dst pointers */
1001 srcA = srcPtr;
1002 if (srcHeight > 1)
1003 srcB = srcA + srcRowStride;
1004 else
1005 srcB = srcA;
1006 dst = dstPtr;
1007
1008 for (row = 0; row < dstHeight; row++) {
1009 do_row(datatype, comps,
1010 srcWidth, srcA, srcB,
1011 dstWidth, dst);
1012 srcA += 2 * srcRowStride;
1013 srcB += 2 * srcRowStride;
1014 dst += dstRowStride;
1015 }
1016 }
1017
1018
1019 static void
1020 reduce_3d(enum pipe_format pformat,
1021 int srcWidth, int srcHeight, int srcDepth,
1022 int srcRowStride, int srcImageStride, const ubyte *srcPtr,
1023 int dstWidth, int dstHeight, int dstDepth,
1024 int dstRowStride, int dstImageStride, ubyte *dstPtr)
1025 {
1026 const int bpt = util_format_get_blocksize(pformat);
1027 int img, row;
1028 int srcImageOffset, srcRowOffset;
1029 enum dtype datatype;
1030 uint comps;
1031
1032 format_to_type_comps(pformat, &datatype, &comps);
1033
1034 /* XXX I think we should rather assert those strides */
1035 if (!srcImageStride)
1036 srcImageStride = srcWidth * srcHeight * bpt;
1037 if (!dstImageStride)
1038 dstImageStride = dstWidth * dstHeight * bpt;
1039
1040 if (!srcRowStride)
1041 srcRowStride = srcWidth * bpt;
1042 if (!dstRowStride)
1043 dstRowStride = dstWidth * bpt;
1044
1045 /* Offset between adjacent src images to be averaged together */
1046 srcImageOffset = (srcDepth == dstDepth) ? 0 : srcImageStride;
1047
1048 /* Offset between adjacent src rows to be averaged together */
1049 srcRowOffset = (srcHeight == dstHeight) ? 0 : srcRowStride;
1050
1051 /*
1052 * Need to average together up to 8 src pixels for each dest pixel.
1053 * Break that down into 3 operations:
1054 * 1. take two rows from source image and average them together.
1055 * 2. take two rows from next source image and average them together.
1056 * 3. take the two averaged rows and average them for the final dst row.
1057 */
1058
1059 /*
1060 printf("mip3d %d x %d x %d -> %d x %d x %d\n",
1061 srcWidth, srcHeight, srcDepth, dstWidth, dstHeight, dstDepth);
1062 */
1063
1064 for (img = 0; img < dstDepth; img++) {
1065 /* first source image pointer */
1066 const ubyte *imgSrcA = srcPtr
1067 + img * (srcImageStride + srcImageOffset);
1068 /* second source image pointer */
1069 const ubyte *imgSrcB = imgSrcA + srcImageOffset;
1070 /* address of the dest image */
1071 ubyte *imgDst = dstPtr + img * dstImageStride;
1072
1073 /* setup the four source row pointers and the dest row pointer */
1074 const ubyte *srcImgARowA = imgSrcA;
1075 const ubyte *srcImgARowB = imgSrcA + srcRowOffset;
1076 const ubyte *srcImgBRowA = imgSrcB;
1077 const ubyte *srcImgBRowB = imgSrcB + srcRowOffset;
1078 ubyte *dstImgRow = imgDst;
1079
1080 for (row = 0; row < dstHeight; row++) {
1081 do_row_3D(datatype, comps, srcWidth,
1082 srcImgARowA, srcImgARowB,
1083 srcImgBRowA, srcImgBRowB,
1084 dstWidth, dstImgRow);
1085
1086 /* advance to next rows */
1087 srcImgARowA += srcRowStride + srcRowOffset;
1088 srcImgARowB += srcRowStride + srcRowOffset;
1089 srcImgBRowA += srcRowStride + srcRowOffset;
1090 srcImgBRowB += srcRowStride + srcRowOffset;
1091 dstImgRow += dstImageStride;
1092 }
1093 }
1094 }
1095
1096
1097
1098
1099 static void
1100 make_1d_mipmap(struct gen_mipmap_state *ctx,
1101 struct pipe_resource *pt,
1102 uint layer, uint baseLevel, uint lastLevel)
1103 {
1104 struct pipe_context *pipe = ctx->pipe;
1105 uint dstLevel;
1106
1107 for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) {
1108 const uint srcLevel = dstLevel - 1;
1109 struct pipe_transfer *srcTrans, *dstTrans;
1110 void *srcMap, *dstMap;
1111
1112 srcTrans = pipe_get_transfer(pipe, pt, srcLevel, layer,
1113 PIPE_TRANSFER_READ, 0, 0,
1114 u_minify(pt->width0, srcLevel),
1115 u_minify(pt->height0, srcLevel));
1116 dstTrans = pipe_get_transfer(pipe, pt, dstLevel, layer,
1117 PIPE_TRANSFER_WRITE, 0, 0,
1118 u_minify(pt->width0, dstLevel),
1119 u_minify(pt->height0, dstLevel));
1120
1121 srcMap = (ubyte *) pipe->transfer_map(pipe, srcTrans);
1122 dstMap = (ubyte *) pipe->transfer_map(pipe, dstTrans);
1123
1124 reduce_1d(pt->format,
1125 srcTrans->box.width, srcMap,
1126 dstTrans->box.width, dstMap);
1127
1128 pipe->transfer_unmap(pipe, srcTrans);
1129 pipe->transfer_unmap(pipe, dstTrans);
1130
1131 pipe->transfer_destroy(pipe, srcTrans);
1132 pipe->transfer_destroy(pipe, dstTrans);
1133 }
1134 }
1135
1136
1137 static void
1138 make_2d_mipmap(struct gen_mipmap_state *ctx,
1139 struct pipe_resource *pt,
1140 uint layer, uint baseLevel, uint lastLevel)
1141 {
1142 struct pipe_context *pipe = ctx->pipe;
1143 uint dstLevel;
1144
1145 assert(util_format_get_blockwidth(pt->format) == 1);
1146 assert(util_format_get_blockheight(pt->format) == 1);
1147
1148 for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) {
1149 const uint srcLevel = dstLevel - 1;
1150 struct pipe_transfer *srcTrans, *dstTrans;
1151 ubyte *srcMap, *dstMap;
1152
1153 srcTrans = pipe_get_transfer(pipe, pt, srcLevel, layer,
1154 PIPE_TRANSFER_READ, 0, 0,
1155 u_minify(pt->width0, srcLevel),
1156 u_minify(pt->height0, srcLevel));
1157 dstTrans = pipe_get_transfer(pipe, pt, dstLevel, layer,
1158 PIPE_TRANSFER_WRITE, 0, 0,
1159 u_minify(pt->width0, dstLevel),
1160 u_minify(pt->height0, dstLevel));
1161
1162 srcMap = (ubyte *) pipe->transfer_map(pipe, srcTrans);
1163 dstMap = (ubyte *) pipe->transfer_map(pipe, dstTrans);
1164
1165 reduce_2d(pt->format,
1166 srcTrans->box.width, srcTrans->box.height,
1167 srcTrans->stride, srcMap,
1168 dstTrans->box.width, dstTrans->box.height,
1169 dstTrans->stride, dstMap);
1170
1171 pipe->transfer_unmap(pipe, srcTrans);
1172 pipe->transfer_unmap(pipe, dstTrans);
1173
1174 pipe->transfer_destroy(pipe, srcTrans);
1175 pipe->transfer_destroy(pipe, dstTrans);
1176 }
1177 }
1178
1179
1180 /* XXX looks a bit more like it could work now but need to test */
1181 static void
1182 make_3d_mipmap(struct gen_mipmap_state *ctx,
1183 struct pipe_resource *pt,
1184 uint face, uint baseLevel, uint lastLevel)
1185 {
1186 struct pipe_context *pipe = ctx->pipe;
1187 uint dstLevel;
1188 struct pipe_box src_box, dst_box;
1189
1190 assert(util_format_get_blockwidth(pt->format) == 1);
1191 assert(util_format_get_blockheight(pt->format) == 1);
1192
1193 src_box.x = src_box.y = src_box.z = 0;
1194 dst_box.x = dst_box.y = dst_box.z = 0;
1195
1196 for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) {
1197 const uint srcLevel = dstLevel - 1;
1198 struct pipe_transfer *srcTrans, *dstTrans;
1199 ubyte *srcMap, *dstMap;
1200 struct pipe_box src_box, dst_box;
1201 src_box.width = u_minify(pt->width0, srcLevel);
1202 src_box.height = u_minify(pt->height0, srcLevel);
1203 src_box.depth = u_minify(pt->depth0, srcLevel);
1204 dst_box.width = u_minify(pt->width0, dstLevel);
1205 dst_box.height = u_minify(pt->height0, dstLevel);
1206 dst_box.depth = u_minify(pt->depth0, dstLevel);
1207
1208 srcTrans = pipe->get_transfer(pipe, pt, srcLevel,
1209 PIPE_TRANSFER_READ,
1210 &src_box);
1211 dstTrans = pipe->get_transfer(pipe, pt, dstLevel,
1212 PIPE_TRANSFER_WRITE,
1213 &dst_box);
1214
1215 srcMap = (ubyte *) pipe->transfer_map(pipe, srcTrans);
1216 dstMap = (ubyte *) pipe->transfer_map(pipe, dstTrans);
1217
1218 reduce_3d(pt->format,
1219 srcTrans->box.width, srcTrans->box.height, srcTrans->box.depth,
1220 srcTrans->stride, srcTrans->layer_stride, srcMap,
1221 dstTrans->box.width, dstTrans->box.height, dstTrans->box.depth,
1222 dstTrans->stride, dstTrans->layer_stride, dstMap);
1223
1224 pipe->transfer_unmap(pipe, srcTrans);
1225 pipe->transfer_unmap(pipe, dstTrans);
1226
1227 pipe->transfer_destroy(pipe, srcTrans);
1228 pipe->transfer_destroy(pipe, dstTrans);
1229 }
1230 }
1231
1232
1233 static void
1234 fallback_gen_mipmap(struct gen_mipmap_state *ctx,
1235 struct pipe_resource *pt,
1236 uint layer, uint baseLevel, uint lastLevel)
1237 {
1238 switch (pt->target) {
1239 case PIPE_TEXTURE_1D:
1240 make_1d_mipmap(ctx, pt, layer, baseLevel, lastLevel);
1241 break;
1242 case PIPE_TEXTURE_2D:
1243 case PIPE_TEXTURE_RECT:
1244 case PIPE_TEXTURE_CUBE:
1245 make_2d_mipmap(ctx, pt, layer, baseLevel, lastLevel);
1246 break;
1247 case PIPE_TEXTURE_3D:
1248 make_3d_mipmap(ctx, pt, layer, baseLevel, lastLevel);
1249 break;
1250 default:
1251 assert(0);
1252 }
1253 }
1254
1255
1256 /**
1257 * Create a mipmap generation context.
1258 * The idea is to create one of these and re-use it each time we need to
1259 * generate a mipmap.
1260 */
1261 struct gen_mipmap_state *
1262 util_create_gen_mipmap(struct pipe_context *pipe,
1263 struct cso_context *cso)
1264 {
1265 struct gen_mipmap_state *ctx;
1266 uint i;
1267
1268 ctx = CALLOC_STRUCT(gen_mipmap_state);
1269 if (!ctx)
1270 return NULL;
1271
1272 ctx->pipe = pipe;
1273 ctx->cso = cso;
1274
1275 /* disabled blending/masking */
1276 memset(&ctx->blend, 0, sizeof(ctx->blend));
1277 ctx->blend.rt[0].colormask = PIPE_MASK_RGBA;
1278
1279 /* no-op depth/stencil/alpha */
1280 memset(&ctx->depthstencil, 0, sizeof(ctx->depthstencil));
1281
1282 /* rasterizer */
1283 memset(&ctx->rasterizer, 0, sizeof(ctx->rasterizer));
1284 ctx->rasterizer.cull_face = PIPE_FACE_NONE;
1285 ctx->rasterizer.gl_rasterization_rules = 1;
1286
1287 /* sampler state */
1288 memset(&ctx->sampler, 0, sizeof(ctx->sampler));
1289 ctx->sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
1290 ctx->sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
1291 ctx->sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
1292 ctx->sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
1293 ctx->sampler.normalized_coords = 1;
1294
1295 /* vertex elements state */
1296 memset(&ctx->velem[0], 0, sizeof(ctx->velem[0]) * 2);
1297 for (i = 0; i < 2; i++) {
1298 ctx->velem[i].src_offset = i * 4 * sizeof(float);
1299 ctx->velem[i].instance_divisor = 0;
1300 ctx->velem[i].vertex_buffer_index = 0;
1301 ctx->velem[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
1302 }
1303
1304 /* vertex shader - still needed to specify mapping from fragment
1305 * shader input semantics to vertex elements
1306 */
1307 {
1308 const uint semantic_names[] = { TGSI_SEMANTIC_POSITION,
1309 TGSI_SEMANTIC_GENERIC };
1310 const uint semantic_indexes[] = { 0, 0 };
1311 ctx->vs = util_make_vertex_passthrough_shader(pipe, 2, semantic_names,
1312 semantic_indexes);
1313 }
1314
1315 /* fragment shader */
1316 ctx->fs1d = util_make_fragment_tex_shader(pipe, TGSI_TEXTURE_1D,
1317 TGSI_INTERPOLATE_LINEAR);
1318 ctx->fs2d = util_make_fragment_tex_shader(pipe, TGSI_TEXTURE_2D,
1319 TGSI_INTERPOLATE_LINEAR);
1320 ctx->fs3d = util_make_fragment_tex_shader(pipe, TGSI_TEXTURE_3D,
1321 TGSI_INTERPOLATE_LINEAR);
1322 ctx->fsCube = util_make_fragment_tex_shader(pipe, TGSI_TEXTURE_CUBE,
1323 TGSI_INTERPOLATE_LINEAR);
1324
1325 /* vertex data that doesn't change */
1326 for (i = 0; i < 4; i++) {
1327 ctx->vertices[i][0][2] = 0.0f; /* z */
1328 ctx->vertices[i][0][3] = 1.0f; /* w */
1329 ctx->vertices[i][1][3] = 1.0f; /* q */
1330 }
1331
1332 /* Note: the actual vertex buffer is allocated as needed below */
1333
1334 return ctx;
1335 }
1336
1337
1338 /**
1339 * Get next "slot" of vertex space in the vertex buffer.
1340 * We're allocating one large vertex buffer and using it piece by piece.
1341 */
1342 static unsigned
1343 get_next_slot(struct gen_mipmap_state *ctx)
1344 {
1345 const unsigned max_slots = 4096 / sizeof ctx->vertices;
1346
1347 if (ctx->vbuf_slot >= max_slots)
1348 util_gen_mipmap_flush( ctx );
1349
1350 if (!ctx->vbuf) {
1351 ctx->vbuf = pipe_buffer_create(ctx->pipe->screen,
1352 PIPE_BIND_VERTEX_BUFFER,
1353 PIPE_USAGE_STREAM,
1354 max_slots * sizeof ctx->vertices);
1355 }
1356
1357 return ctx->vbuf_slot++ * sizeof ctx->vertices;
1358 }
1359
1360
1361 static unsigned
1362 set_vertex_data(struct gen_mipmap_state *ctx,
1363 enum pipe_texture_target tex_target,
1364 uint layer, float r)
1365 {
1366 unsigned offset;
1367
1368 /* vert[0].position */
1369 ctx->vertices[0][0][0] = -1.0f; /*x*/
1370 ctx->vertices[0][0][1] = -1.0f; /*y*/
1371
1372 /* vert[1].position */
1373 ctx->vertices[1][0][0] = 1.0f;
1374 ctx->vertices[1][0][1] = -1.0f;
1375
1376 /* vert[2].position */
1377 ctx->vertices[2][0][0] = 1.0f;
1378 ctx->vertices[2][0][1] = 1.0f;
1379
1380 /* vert[3].position */
1381 ctx->vertices[3][0][0] = -1.0f;
1382 ctx->vertices[3][0][1] = 1.0f;
1383
1384 /* Setup vertex texcoords. This is a little tricky for cube maps. */
1385 if (tex_target == PIPE_TEXTURE_CUBE) {
1386 static const float st[4][2] = {
1387 {0.0f, 0.0f}, {1.0f, 0.0f}, {1.0f, 1.0f}, {0.0f, 1.0f}
1388 };
1389
1390 util_map_texcoords2d_onto_cubemap(layer, &st[0][0], 2,
1391 &ctx->vertices[0][1][0], 8);
1392 }
1393 else {
1394 /* 1D/2D/3D */
1395 ctx->vertices[0][1][0] = 0.0f; /*s*/
1396 ctx->vertices[0][1][1] = 0.0f; /*t*/
1397 ctx->vertices[0][1][2] = r; /*r*/
1398
1399 ctx->vertices[1][1][0] = 1.0f;
1400 ctx->vertices[1][1][1] = 0.0f;
1401 ctx->vertices[1][1][2] = r;
1402
1403 ctx->vertices[2][1][0] = 1.0f;
1404 ctx->vertices[2][1][1] = 1.0f;
1405 ctx->vertices[2][1][2] = r;
1406
1407 ctx->vertices[3][1][0] = 0.0f;
1408 ctx->vertices[3][1][1] = 1.0f;
1409 ctx->vertices[3][1][2] = r;
1410 }
1411
1412 offset = get_next_slot( ctx );
1413
1414 pipe_buffer_write_nooverlap(ctx->pipe, ctx->vbuf,
1415 offset, sizeof(ctx->vertices), ctx->vertices);
1416
1417 return offset;
1418 }
1419
1420
1421
1422 /**
1423 * Destroy a mipmap generation context
1424 */
1425 void
1426 util_destroy_gen_mipmap(struct gen_mipmap_state *ctx)
1427 {
1428 struct pipe_context *pipe = ctx->pipe;
1429
1430 pipe->delete_fs_state(pipe, ctx->fsCube);
1431 pipe->delete_fs_state(pipe, ctx->fs3d);
1432 pipe->delete_fs_state(pipe, ctx->fs2d);
1433 pipe->delete_fs_state(pipe, ctx->fs1d);
1434 pipe->delete_vs_state(pipe, ctx->vs);
1435
1436 pipe_resource_reference(&ctx->vbuf, NULL);
1437
1438 FREE(ctx);
1439 }
1440
1441
1442
1443 /* Release vertex buffer at end of frame to avoid synchronous
1444 * rendering.
1445 */
1446 void util_gen_mipmap_flush( struct gen_mipmap_state *ctx )
1447 {
1448 pipe_resource_reference(&ctx->vbuf, NULL);
1449 ctx->vbuf_slot = 0;
1450 }
1451
1452
1453 /**
1454 * Generate mipmap images. It's assumed all needed texture memory is
1455 * already allocated.
1456 *
1457 * \param psv the sampler view to the texture to generate mipmap levels for
1458 * \param face which cube face to generate mipmaps for (0 for non-cube maps)
1459 * \param baseLevel the first mipmap level to use as a src
1460 * \param lastLevel the last mipmap level to generate
1461 * \param filter the minification filter used to generate mipmap levels with
1462 * \param filter one of PIPE_TEX_FILTER_LINEAR, PIPE_TEX_FILTER_NEAREST
1463 */
1464 void
1465 util_gen_mipmap(struct gen_mipmap_state *ctx,
1466 struct pipe_sampler_view *psv,
1467 uint face, uint baseLevel, uint lastLevel, uint filter)
1468 {
1469 struct pipe_context *pipe = ctx->pipe;
1470 struct pipe_screen *screen = pipe->screen;
1471 struct pipe_framebuffer_state fb;
1472 struct pipe_resource *pt = psv->texture;
1473 void *fs;
1474 uint dstLevel;
1475 uint offset;
1476
1477 /* The texture object should have room for the levels which we're
1478 * about to generate.
1479 */
1480 assert(lastLevel <= pt->last_level);
1481
1482 /* If this fails, why are we here? */
1483 assert(lastLevel > baseLevel);
1484
1485 assert(filter == PIPE_TEX_FILTER_LINEAR ||
1486 filter == PIPE_TEX_FILTER_NEAREST);
1487
1488 switch (pt->target) {
1489 case PIPE_TEXTURE_1D:
1490 fs = ctx->fs1d;
1491 break;
1492 case PIPE_TEXTURE_2D:
1493 fs = ctx->fs2d;
1494 break;
1495 case PIPE_TEXTURE_3D:
1496 fs = ctx->fs3d;
1497 break;
1498 case PIPE_TEXTURE_CUBE:
1499 fs = ctx->fsCube;
1500 break;
1501 case PIPE_TEXTURE_1D_ARRAY:
1502 case PIPE_TEXTURE_2D_ARRAY:
1503 default:
1504 assert(0);
1505 fs = ctx->fs2d;
1506 }
1507
1508 /* check if we can render in the texture's format */
1509 if (!screen->is_format_supported(screen, psv->format, pt->target,
1510 pt->nr_samples, PIPE_BIND_RENDER_TARGET, 0)) {
1511 fallback_gen_mipmap(ctx, pt, face, baseLevel, lastLevel);
1512 return;
1513 }
1514
1515 /* save state (restored below) */
1516 cso_save_blend(ctx->cso);
1517 cso_save_depth_stencil_alpha(ctx->cso);
1518 cso_save_rasterizer(ctx->cso);
1519 cso_save_samplers(ctx->cso);
1520 cso_save_fragment_sampler_views(ctx->cso);
1521 cso_save_framebuffer(ctx->cso);
1522 cso_save_fragment_shader(ctx->cso);
1523 cso_save_vertex_shader(ctx->cso);
1524 cso_save_viewport(ctx->cso);
1525 cso_save_clip(ctx->cso);
1526 cso_save_vertex_elements(ctx->cso);
1527
1528 /* bind our state */
1529 cso_set_blend(ctx->cso, &ctx->blend);
1530 cso_set_depth_stencil_alpha(ctx->cso, &ctx->depthstencil);
1531 cso_set_rasterizer(ctx->cso, &ctx->rasterizer);
1532 cso_set_clip(ctx->cso, &ctx->clip);
1533 cso_set_vertex_elements(ctx->cso, 2, ctx->velem);
1534
1535 cso_set_fragment_shader_handle(ctx->cso, fs);
1536 cso_set_vertex_shader_handle(ctx->cso, ctx->vs);
1537
1538 /* init framebuffer state */
1539 memset(&fb, 0, sizeof(fb));
1540 fb.nr_cbufs = 1;
1541
1542 /* set min/mag to same filter for faster sw speed */
1543 ctx->sampler.mag_img_filter = filter;
1544 ctx->sampler.min_img_filter = filter;
1545
1546 /*
1547 * XXX for small mipmap levels, it may be faster to use the software
1548 * fallback path...
1549 */
1550 for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) {
1551 const uint srcLevel = dstLevel - 1;
1552 struct pipe_viewport_state vp;
1553 unsigned nr_layers, layer, i;
1554 float rcoord = 0.0f;
1555
1556 if (pt->target == PIPE_TEXTURE_3D)
1557 nr_layers = u_minify(pt->depth0, dstLevel);
1558 else
1559 nr_layers = 1;
1560
1561 for (i = 0; i < nr_layers; i++) {
1562 struct pipe_surface *surf, surf_templ;
1563 if (pt->target == PIPE_TEXTURE_3D) {
1564 /* in theory with geom shaders and driver with full layer support
1565 could do that in one go. */
1566 layer = i;
1567 offset = 1.0f / (float)(nr_layers * 2);
1568 /* XXX hmm really? */
1569 rcoord = (float)layer / (float)nr_layers + 1.0f / (float)(nr_layers * 2);
1570 }
1571 else
1572 layer = face;
1573
1574 memset(&surf_templ, 0, sizeof(surf_templ));
1575 u_surface_default_template(&surf_templ, pt, PIPE_BIND_RENDER_TARGET);
1576 surf_templ.u.tex.level = dstLevel;
1577 surf_templ.u.tex.first_layer = layer;
1578 surf_templ.u.tex.last_layer = layer;
1579 surf = pipe->create_surface(pipe, pt, &surf_templ);
1580
1581 /*
1582 * Setup framebuffer / dest surface
1583 */
1584 fb.cbufs[0] = surf;
1585 fb.width = u_minify(pt->width0, dstLevel);
1586 fb.height = u_minify(pt->height0, dstLevel);
1587 cso_set_framebuffer(ctx->cso, &fb);
1588
1589 /* viewport */
1590 vp.scale[0] = 0.5f * fb.width;
1591 vp.scale[1] = 0.5f * fb.height;
1592 vp.scale[2] = 1.0f;
1593 vp.scale[3] = 1.0f;
1594 vp.translate[0] = 0.5f * fb.width;
1595 vp.translate[1] = 0.5f * fb.height;
1596 vp.translate[2] = 0.0f;
1597 vp.translate[3] = 0.0f;
1598 cso_set_viewport(ctx->cso, &vp);
1599
1600 /*
1601 * Setup sampler state
1602 * Note: we should only have to set the min/max LOD clamps to ensure
1603 * we grab texels from the right mipmap level. But some hardware
1604 * has trouble with min clamping so we also set the lod_bias to
1605 * try to work around that.
1606 */
1607 ctx->sampler.min_lod = ctx->sampler.max_lod = (float) srcLevel;
1608 ctx->sampler.lod_bias = (float) srcLevel;
1609 cso_single_sampler(ctx->cso, 0, &ctx->sampler);
1610 cso_single_sampler_done(ctx->cso);
1611
1612 cso_set_fragment_sampler_views(ctx->cso, 1, &psv);
1613
1614 /* quad coords in clip coords */
1615 offset = set_vertex_data(ctx,
1616 pt->target,
1617 face,
1618 rcoord);
1619
1620 util_draw_vertex_buffer(ctx->pipe,
1621 ctx->cso,
1622 ctx->vbuf,
1623 offset,
1624 PIPE_PRIM_TRIANGLE_FAN,
1625 4, /* verts */
1626 2); /* attribs/vert */
1627
1628 pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
1629
1630 /* need to signal that the texture has changed _after_ rendering to it */
1631 pipe_surface_reference( &surf, NULL );
1632 }
1633 }
1634
1635 /* restore state we changed */
1636 cso_restore_blend(ctx->cso);
1637 cso_restore_depth_stencil_alpha(ctx->cso);
1638 cso_restore_rasterizer(ctx->cso);
1639 cso_restore_samplers(ctx->cso);
1640 cso_restore_fragment_sampler_views(ctx->cso);
1641 cso_restore_framebuffer(ctx->cso);
1642 cso_restore_fragment_shader(ctx->cso);
1643 cso_restore_vertex_shader(ctx->cso);
1644 cso_restore_viewport(ctx->cso);
1645 cso_restore_clip(ctx->cso);
1646 cso_restore_vertex_elements(ctx->cso);
1647 }