1 /**************************************************************************
2 *
3 * Copyright 2011 Christian König
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 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.
25 *
26 **************************************************************************/
27
28 #include <assert.h>
29
30 #include "pipe/p_screen.h"
31 #include "pipe/p_context.h"
32
33 #include "util/u_draw.h"
34 #include "util/u_sampler.h"
35 #include "util/u_inlines.h"
36 #include "util/u_memory.h"
37
38 #include "tgsi/tgsi_ureg.h"
39
40 #include "vl_defines.h"
41 #include "vl_types.h"
42
43 #include "vl_zscan.h"
44 #include "vl_vertex_buffers.h"
45
46 enum VS_OUTPUT
47 {
48 VS_O_VPOS = 0,
49 VS_O_VTEX = 0
50 };
51
52 const int vl_zscan_linear[] =
53 {
54 /* Linear scan pattern */
55 0, 1, 2, 3, 4, 5, 6, 7,
56 8, 9,10,11,12,13,14,15,
57 16,17,18,19,20,21,22,23,
58 24,25,26,27,28,29,30,31,
59 32,33,34,35,36,37,38,39,
60 40,41,42,43,44,45,46,47,
61 48,49,50,51,52,53,54,55,
62 56,57,58,59,60,61,62,63
63 };
64
65 const int vl_zscan_normal[] =
66 {
67 /* Zig-Zag scan pattern */
68 0, 1, 8,16, 9, 2, 3,10,
69 17,24,32,25,18,11, 4, 5,
70 12,19,26,33,40,48,41,34,
71 27,20,13, 6, 7,14,21,28,
72 35,42,49,56,57,50,43,36,
73 29,22,15,23,30,37,44,51,
74 58,59,52,45,38,31,39,46,
75 53,60,61,54,47,55,62,63
76 };
77
78 const int vl_zscan_alternate[] =
79 {
80 /* Alternate scan pattern */
81 0, 8,16,24, 1, 9, 2,10,
82 17,25,32,40,48,56,57,49,
83 41,33,26,18, 3,11, 4,12,
84 19,27,34,42,50,58,35,43,
85 51,59,20,28, 5,13, 6,14,
86 21,29,36,44,52,60,37,45,
87 53,61,22,30, 7,15,23,31,
88 38,46,54,62,39,47,55,63
89 };
90
91 static void *
create_vert_shader(struct vl_zscan * zscan)92 create_vert_shader(struct vl_zscan *zscan)
93 {
94 struct ureg_program *shader;
95
96 struct ureg_src scale;
97 struct ureg_src vrect, vpos, block_num;
98
99 struct ureg_dst tmp;
100 struct ureg_dst o_vpos;
101 struct ureg_dst *o_vtex;
102
103 signed i;
104
105 shader = ureg_create(TGSI_PROCESSOR_VERTEX);
106 if (!shader)
107 return NULL;
108
109 o_vtex = MALLOC(zscan->num_channels * sizeof(struct ureg_dst));
110
111 scale = ureg_imm2f(shader,
112 (float)VL_BLOCK_WIDTH / zscan->buffer_width,
113 (float)VL_BLOCK_HEIGHT / zscan->buffer_height);
114
115 vrect = ureg_DECL_vs_input(shader, VS_I_RECT);
116 vpos = ureg_DECL_vs_input(shader, VS_I_VPOS);
117 block_num = ureg_DECL_vs_input(shader, VS_I_BLOCK_NUM);
118
119 tmp = ureg_DECL_temporary(shader);
120
121 o_vpos = ureg_DECL_output(shader, TGSI_SEMANTIC_POSITION, VS_O_VPOS);
122
123 for (i = 0; i < zscan->num_channels; ++i)
124 o_vtex[i] = ureg_DECL_output(shader, TGSI_SEMANTIC_GENERIC, VS_O_VTEX + i);
125
126 /*
127 * o_vpos.xy = (vpos + vrect) * scale
128 * o_vpos.zw = 1.0f
129 *
130 * tmp.xy = InstanceID / blocks_per_line
131 * tmp.x = frac(tmp.x)
132 * tmp.y = floor(tmp.y)
133 *
134 * o_vtex.x = vrect.x / blocks_per_line + tmp.x
135 * o_vtex.y = vrect.y
136 * o_vtex.z = tmp.z * blocks_per_line / blocks_total
137 */
138 ureg_ADD(shader, ureg_writemask(tmp, TGSI_WRITEMASK_XY), vpos, vrect);
139 ureg_MUL(shader, ureg_writemask(o_vpos, TGSI_WRITEMASK_XY), ureg_src(tmp), scale);
140 ureg_MOV(shader, ureg_writemask(o_vpos, TGSI_WRITEMASK_ZW), ureg_imm1f(shader, 1.0f));
141
142 ureg_MUL(shader, ureg_writemask(tmp, TGSI_WRITEMASK_XW), ureg_scalar(block_num, TGSI_SWIZZLE_X),
143 ureg_imm1f(shader, 1.0f / zscan->blocks_per_line));
144
145 ureg_FRC(shader, ureg_writemask(tmp, TGSI_WRITEMASK_Y), ureg_scalar(ureg_src(tmp), TGSI_SWIZZLE_X));
146 ureg_FLR(shader, ureg_writemask(tmp, TGSI_WRITEMASK_W), ureg_src(tmp));
147
148 for (i = 0; i < zscan->num_channels; ++i) {
149 ureg_ADD(shader, ureg_writemask(tmp, TGSI_WRITEMASK_X), ureg_scalar(ureg_src(tmp), TGSI_SWIZZLE_Y),
150 ureg_imm1f(shader, 1.0f / (zscan->blocks_per_line * VL_BLOCK_WIDTH)
151 * (i - (signed)zscan->num_channels / 2)));
152
153 ureg_MAD(shader, ureg_writemask(o_vtex[i], TGSI_WRITEMASK_X), vrect,
154 ureg_imm1f(shader, 1.0f / zscan->blocks_per_line), ureg_src(tmp));
155 ureg_MOV(shader, ureg_writemask(o_vtex[i], TGSI_WRITEMASK_Y), vrect);
156 ureg_MOV(shader, ureg_writemask(o_vtex[i], TGSI_WRITEMASK_Z), vpos);
157 ureg_MUL(shader, ureg_writemask(o_vtex[i], TGSI_WRITEMASK_W), ureg_src(tmp),
158 ureg_imm1f(shader, (float)zscan->blocks_per_line / zscan->blocks_total));
159 }
160
161 ureg_release_temporary(shader, tmp);
162 ureg_END(shader);
163
164 FREE(o_vtex);
165
166 return ureg_create_shader_and_destroy(shader, zscan->pipe);
167 }
168
169 static void *
create_frag_shader(struct vl_zscan * zscan)170 create_frag_shader(struct vl_zscan *zscan)
171 {
172 struct ureg_program *shader;
173 struct ureg_src *vtex;
174
175 struct ureg_src samp_src, samp_scan, samp_quant;
176
177 struct ureg_dst *tmp;
178 struct ureg_dst quant, fragment;
179
180 unsigned i;
181
182 shader = ureg_create(TGSI_PROCESSOR_FRAGMENT);
183 if (!shader)
184 return NULL;
185
186 vtex = MALLOC(zscan->num_channels * sizeof(struct ureg_src));
187 tmp = MALLOC(zscan->num_channels * sizeof(struct ureg_dst));
188
189 for (i = 0; i < zscan->num_channels; ++i)
190 vtex[i] = ureg_DECL_fs_input(shader, TGSI_SEMANTIC_GENERIC, VS_O_VTEX + i, TGSI_INTERPOLATE_LINEAR);
191
192 samp_src = ureg_DECL_sampler(shader, 0);
193 samp_scan = ureg_DECL_sampler(shader, 1);
194 samp_quant = ureg_DECL_sampler(shader, 2);
195
196 for (i = 0; i < zscan->num_channels; ++i)
197 tmp[i] = ureg_DECL_temporary(shader);
198 quant = ureg_DECL_temporary(shader);
199
200 fragment = ureg_DECL_output(shader, TGSI_SEMANTIC_COLOR, 0);
201
202 /*
203 * tmp.x = tex(vtex, 1)
204 * tmp.y = vtex.z
205 * fragment = tex(tmp, 0) * quant
206 */
207 for (i = 0; i < zscan->num_channels; ++i)
208 ureg_TEX(shader, ureg_writemask(tmp[i], TGSI_WRITEMASK_X), TGSI_TEXTURE_2D, vtex[i], samp_scan);
209
210 for (i = 0; i < zscan->num_channels; ++i)
211 ureg_MOV(shader, ureg_writemask(tmp[i], TGSI_WRITEMASK_Y), ureg_scalar(vtex[i], TGSI_SWIZZLE_W));
212
213 for (i = 0; i < zscan->num_channels; ++i) {
214 ureg_TEX(shader, ureg_writemask(tmp[0], TGSI_WRITEMASK_X << i), TGSI_TEXTURE_2D, ureg_src(tmp[i]), samp_src);
215 ureg_TEX(shader, ureg_writemask(quant, TGSI_WRITEMASK_X << i), TGSI_TEXTURE_3D, vtex[i], samp_quant);
216 }
217
218 ureg_MUL(shader, quant, ureg_src(quant), ureg_imm1f(shader, 16.0f));
219 ureg_MUL(shader, fragment, ureg_src(tmp[0]), ureg_src(quant));
220
221 for (i = 0; i < zscan->num_channels; ++i)
222 ureg_release_temporary(shader, tmp[i]);
223 ureg_END(shader);
224
225 FREE(vtex);
226 FREE(tmp);
227
228 return ureg_create_shader_and_destroy(shader, zscan->pipe);
229 }
230
231 static bool
init_shaders(struct vl_zscan * zscan)232 init_shaders(struct vl_zscan *zscan)
233 {
234 assert(zscan);
235
236 zscan->vs = create_vert_shader(zscan);
237 if (!zscan->vs)
238 goto error_vs;
239
240 zscan->fs = create_frag_shader(zscan);
241 if (!zscan->fs)
242 goto error_fs;
243
244 return true;
245
246 error_fs:
247 zscan->pipe->delete_vs_state(zscan->pipe, zscan->vs);
248
249 error_vs:
250 return false;
251 }
252
253 static void
cleanup_shaders(struct vl_zscan * zscan)254 cleanup_shaders(struct vl_zscan *zscan)
255 {
256 assert(zscan);
257
258 zscan->pipe->delete_vs_state(zscan->pipe, zscan->vs);
259 zscan->pipe->delete_fs_state(zscan->pipe, zscan->fs);
260 }
261
262 static bool
init_state(struct vl_zscan * zscan)263 init_state(struct vl_zscan *zscan)
264 {
265 struct pipe_blend_state blend;
266 struct pipe_rasterizer_state rs_state;
267 struct pipe_sampler_state sampler;
268 unsigned i;
269
270 assert(zscan);
271
272 memset(&rs_state, 0, sizeof(rs_state));
273 rs_state.gl_rasterization_rules = true;
274 rs_state.depth_clip = 1;
275 zscan->rs_state = zscan->pipe->create_rasterizer_state(zscan->pipe, &rs_state);
276 if (!zscan->rs_state)
277 goto error_rs_state;
278
279 memset(&blend, 0, sizeof blend);
280
281 blend.independent_blend_enable = 0;
282 blend.rt[0].blend_enable = 0;
283 blend.rt[0].rgb_func = PIPE_BLEND_ADD;
284 blend.rt[0].rgb_src_factor = PIPE_BLENDFACTOR_ONE;
285 blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ONE;
286 blend.rt[0].alpha_func = PIPE_BLEND_ADD;
287 blend.rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE;
288 blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ONE;
289 blend.logicop_enable = 0;
290 blend.logicop_func = PIPE_LOGICOP_CLEAR;
291 /* Needed to allow color writes to FB, even if blending disabled */
292 blend.rt[0].colormask = PIPE_MASK_RGBA;
293 blend.dither = 0;
294 zscan->blend = zscan->pipe->create_blend_state(zscan->pipe, &blend);
295 if (!zscan->blend)
296 goto error_blend;
297
298 for (i = 0; i < 3; ++i) {
299 memset(&sampler, 0, sizeof(sampler));
300 sampler.wrap_s = PIPE_TEX_WRAP_REPEAT;
301 sampler.wrap_t = PIPE_TEX_WRAP_REPEAT;
302 sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
303 sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
304 sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
305 sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
306 sampler.compare_mode = PIPE_TEX_COMPARE_NONE;
307 sampler.compare_func = PIPE_FUNC_ALWAYS;
308 sampler.normalized_coords = 1;
309 zscan->samplers[i] = zscan->pipe->create_sampler_state(zscan->pipe, &sampler);
310 if (!zscan->samplers[i])
311 goto error_samplers;
312 }
313
314 return true;
315
316 error_samplers:
317 for (i = 0; i < 2; ++i)
318 if (zscan->samplers[i])
319 zscan->pipe->delete_sampler_state(zscan->pipe, zscan->samplers[i]);
320
321 zscan->pipe->delete_rasterizer_state(zscan->pipe, zscan->rs_state);
322
323 error_blend:
324 zscan->pipe->delete_blend_state(zscan->pipe, zscan->blend);
325
326 error_rs_state:
327 return false;
328 }
329
330 static void
cleanup_state(struct vl_zscan * zscan)331 cleanup_state(struct vl_zscan *zscan)
332 {
333 unsigned i;
334
335 assert(zscan);
336
337 for (i = 0; i < 3; ++i)
338 zscan->pipe->delete_sampler_state(zscan->pipe, zscan->samplers[i]);
339
340 zscan->pipe->delete_rasterizer_state(zscan->pipe, zscan->rs_state);
341 zscan->pipe->delete_blend_state(zscan->pipe, zscan->blend);
342 }
343
344 struct pipe_sampler_view *
vl_zscan_layout(struct pipe_context * pipe,const int layout[64],unsigned blocks_per_line)345 vl_zscan_layout(struct pipe_context *pipe, const int layout[64], unsigned blocks_per_line)
346 {
347 const unsigned total_size = blocks_per_line * VL_BLOCK_WIDTH * VL_BLOCK_HEIGHT;
348
349 int patched_layout[64];
350
351 struct pipe_resource res_tmpl, *res;
352 struct pipe_sampler_view sv_tmpl, *sv;
353 struct pipe_transfer *buf_transfer;
354 unsigned x, y, i, pitch;
355 float *f;
356
357 struct pipe_box rect =
358 {
359 0, 0, 0,
360 VL_BLOCK_WIDTH * blocks_per_line,
361 VL_BLOCK_HEIGHT,
362 1
363 };
364
365 assert(pipe && layout && blocks_per_line);
366
367 for (i = 0; i < 64; ++i)
368 patched_layout[layout[i]] = i;
369
370 memset(&res_tmpl, 0, sizeof(res_tmpl));
371 res_tmpl.target = PIPE_TEXTURE_2D;
372 res_tmpl.format = PIPE_FORMAT_R32_FLOAT;
373 res_tmpl.width0 = VL_BLOCK_WIDTH * blocks_per_line;
374 res_tmpl.height0 = VL_BLOCK_HEIGHT;
375 res_tmpl.depth0 = 1;
376 res_tmpl.array_size = 1;
377 res_tmpl.usage = PIPE_USAGE_IMMUTABLE;
378 res_tmpl.bind = PIPE_BIND_SAMPLER_VIEW;
379
380 res = pipe->screen->resource_create(pipe->screen, &res_tmpl);
381 if (!res)
382 goto error_resource;
383
384 buf_transfer = pipe->get_transfer
385 (
386 pipe, res,
387 0, PIPE_TRANSFER_WRITE | PIPE_TRANSFER_DISCARD_RANGE,
388 &rect
389 );
390 if (!buf_transfer)
391 goto error_transfer;
392
393 pitch = buf_transfer->stride / sizeof(float);
394
395 f = pipe->transfer_map(pipe, buf_transfer);
396 if (!f)
397 goto error_map;
398
399 for (i = 0; i < blocks_per_line; ++i)
400 for (y = 0; y < VL_BLOCK_HEIGHT; ++y)
401 for (x = 0; x < VL_BLOCK_WIDTH; ++x) {
402 float addr = patched_layout[x + y * VL_BLOCK_WIDTH] +
403 i * VL_BLOCK_WIDTH * VL_BLOCK_HEIGHT;
404
405 addr /= total_size;
406
407 f[i * VL_BLOCK_WIDTH + y * pitch + x] = addr;
408 }
409
410 pipe->transfer_unmap(pipe, buf_transfer);
411 pipe->transfer_destroy(pipe, buf_transfer);
412
413 memset(&sv_tmpl, 0, sizeof(sv_tmpl));
414 u_sampler_view_default_template(&sv_tmpl, res, res->format);
415 sv = pipe->create_sampler_view(pipe, res, &sv_tmpl);
416 pipe_resource_reference(&res, NULL);
417 if (!sv)
418 goto error_map;
419
420 return sv;
421
422 error_map:
423 pipe->transfer_destroy(pipe, buf_transfer);
424
425 error_transfer:
426 pipe_resource_reference(&res, NULL);
427
428 error_resource:
429 return NULL;
430 }
431
432 bool
vl_zscan_init(struct vl_zscan * zscan,struct pipe_context * pipe,unsigned buffer_width,unsigned buffer_height,unsigned blocks_per_line,unsigned blocks_total,unsigned num_channels)433 vl_zscan_init(struct vl_zscan *zscan, struct pipe_context *pipe,
434 unsigned buffer_width, unsigned buffer_height,
435 unsigned blocks_per_line, unsigned blocks_total,
436 unsigned num_channels)
437 {
438 assert(zscan && pipe);
439
440 zscan->pipe = pipe;
441 zscan->buffer_width = buffer_width;
442 zscan->buffer_height = buffer_height;
443 zscan->num_channels = num_channels;
444 zscan->blocks_per_line = blocks_per_line;
445 zscan->blocks_total = blocks_total;
446
447 if(!init_shaders(zscan))
448 return false;
449
450 if(!init_state(zscan)) {
451 cleanup_shaders(zscan);
452 return false;
453 }
454
455 return true;
456 }
457
458 void
vl_zscan_cleanup(struct vl_zscan * zscan)459 vl_zscan_cleanup(struct vl_zscan *zscan)
460 {
461 assert(zscan);
462
463 cleanup_shaders(zscan);
464 cleanup_state(zscan);
465 }
466
467 bool
vl_zscan_init_buffer(struct vl_zscan * zscan,struct vl_zscan_buffer * buffer,struct pipe_sampler_view * src,struct pipe_surface * dst)468 vl_zscan_init_buffer(struct vl_zscan *zscan, struct vl_zscan_buffer *buffer,
469 struct pipe_sampler_view *src, struct pipe_surface *dst)
470 {
471 struct pipe_resource res_tmpl, *res;
472 struct pipe_sampler_view sv_tmpl;
473
474 assert(zscan && buffer);
475
476 memset(buffer, 0, sizeof(struct vl_zscan_buffer));
477
478 pipe_sampler_view_reference(&buffer->src, src);
479
480 buffer->viewport.scale[0] = dst->width;
481 buffer->viewport.scale[1] = dst->height;
482 buffer->viewport.scale[2] = 1;
483 buffer->viewport.scale[3] = 1;
484 buffer->viewport.translate[0] = 0;
485 buffer->viewport.translate[1] = 0;
486 buffer->viewport.translate[2] = 0;
487 buffer->viewport.translate[3] = 0;
488
489 buffer->fb_state.width = dst->width;
490 buffer->fb_state.height = dst->height;
491 buffer->fb_state.nr_cbufs = 1;
492 pipe_surface_reference(&buffer->fb_state.cbufs[0], dst);
493
494 memset(&res_tmpl, 0, sizeof(res_tmpl));
495 res_tmpl.target = PIPE_TEXTURE_3D;
496 res_tmpl.format = PIPE_FORMAT_R8_UNORM;
497 res_tmpl.width0 = VL_BLOCK_WIDTH * zscan->blocks_per_line;
498 res_tmpl.height0 = VL_BLOCK_HEIGHT;
499 res_tmpl.depth0 = 2;
500 res_tmpl.array_size = 1;
501 res_tmpl.usage = PIPE_USAGE_IMMUTABLE;
502 res_tmpl.bind = PIPE_BIND_SAMPLER_VIEW;
503
504 res = zscan->pipe->screen->resource_create(zscan->pipe->screen, &res_tmpl);
505 if (!res)
506 return false;
507
508 memset(&sv_tmpl, 0, sizeof(sv_tmpl));
509 u_sampler_view_default_template(&sv_tmpl, res, res->format);
510 sv_tmpl.swizzle_r = sv_tmpl.swizzle_g = sv_tmpl.swizzle_b = sv_tmpl.swizzle_a = TGSI_SWIZZLE_X;
511 buffer->quant = zscan->pipe->create_sampler_view(zscan->pipe, res, &sv_tmpl);
512 pipe_resource_reference(&res, NULL);
513 if (!buffer->quant)
514 return false;
515
516 return true;
517 }
518
519 void
vl_zscan_cleanup_buffer(struct vl_zscan_buffer * buffer)520 vl_zscan_cleanup_buffer(struct vl_zscan_buffer *buffer)
521 {
522 assert(buffer);
523
524 pipe_sampler_view_reference(&buffer->src, NULL);
525 pipe_sampler_view_reference(&buffer->layout, NULL);
526 pipe_sampler_view_reference(&buffer->quant, NULL);
527 pipe_surface_reference(&buffer->fb_state.cbufs[0], NULL);
528 }
529
530 void
vl_zscan_set_layout(struct vl_zscan_buffer * buffer,struct pipe_sampler_view * layout)531 vl_zscan_set_layout(struct vl_zscan_buffer *buffer, struct pipe_sampler_view *layout)
532 {
533 assert(buffer);
534 assert(layout);
535
536 pipe_sampler_view_reference(&buffer->layout, layout);
537 }
538
539 void
vl_zscan_upload_quant(struct vl_zscan * zscan,struct vl_zscan_buffer * buffer,const uint8_t matrix[64],bool intra)540 vl_zscan_upload_quant(struct vl_zscan *zscan, struct vl_zscan_buffer *buffer,
541 const uint8_t matrix[64], bool intra)
542 {
543 struct pipe_context *pipe;
544 struct pipe_transfer *buf_transfer;
545 unsigned x, y, i, pitch;
546 uint8_t *data;
547
548 struct pipe_box rect =
549 {
550 0, 0, intra ? 1 : 0,
551 VL_BLOCK_WIDTH,
552 VL_BLOCK_HEIGHT,
553 1
554 };
555
556 assert(buffer);
557 assert(matrix);
558
559 pipe = zscan->pipe;
560
561 rect.width *= zscan->blocks_per_line;
562
563 buf_transfer = pipe->get_transfer
564 (
565 pipe, buffer->quant->texture,
566 0, PIPE_TRANSFER_WRITE | PIPE_TRANSFER_DISCARD_RANGE,
567 &rect
568 );
569 if (!buf_transfer)
570 goto error_transfer;
571
572 pitch = buf_transfer->stride;
573
574 data = pipe->transfer_map(pipe, buf_transfer);
575 if (!data)
576 goto error_map;
577
578 for (i = 0; i < zscan->blocks_per_line; ++i)
579 for (y = 0; y < VL_BLOCK_HEIGHT; ++y)
580 for (x = 0; x < VL_BLOCK_WIDTH; ++x)
581 data[i * VL_BLOCK_WIDTH + y * pitch + x] = matrix[x + y * VL_BLOCK_WIDTH];
582
583 pipe->transfer_unmap(pipe, buf_transfer);
584
585 error_map:
586 pipe->transfer_destroy(pipe, buf_transfer);
587
588 error_transfer:
589 return;
590 }
591
592 void
vl_zscan_render(struct vl_zscan * zscan,struct vl_zscan_buffer * buffer,unsigned num_instances)593 vl_zscan_render(struct vl_zscan *zscan, struct vl_zscan_buffer *buffer, unsigned num_instances)
594 {
595 assert(buffer);
596
597 zscan->pipe->bind_rasterizer_state(zscan->pipe, zscan->rs_state);
598 zscan->pipe->bind_blend_state(zscan->pipe, zscan->blend);
599 zscan->pipe->bind_fragment_sampler_states(zscan->pipe, 3, zscan->samplers);
600 zscan->pipe->set_framebuffer_state(zscan->pipe, &buffer->fb_state);
601 zscan->pipe->set_viewport_state(zscan->pipe, &buffer->viewport);
602 zscan->pipe->set_fragment_sampler_views(zscan->pipe, 3, &buffer->src);
603 zscan->pipe->bind_vs_state(zscan->pipe, zscan->vs);
604 zscan->pipe->bind_fs_state(zscan->pipe, zscan->fs);
605 util_draw_arrays_instanced(zscan->pipe, PIPE_PRIM_QUADS, 0, 4, 0, num_instances);
606 }
607