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 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 #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_normal_16[] =
53 {
54 /* Zig-Zag scan pattern */
55 0, 1, 4, 8, 5, 2, 3, 6,
56 9,12,13,10, 7,11,14,15
57 };
58
59 const int vl_zscan_linear[] =
60 {
61 /* Linear scan pattern */
62 0, 1, 2, 3, 4, 5, 6, 7,
63 8, 9,10,11,12,13,14,15,
64 16,17,18,19,20,21,22,23,
65 24,25,26,27,28,29,30,31,
66 32,33,34,35,36,37,38,39,
67 40,41,42,43,44,45,46,47,
68 48,49,50,51,52,53,54,55,
69 56,57,58,59,60,61,62,63
70 };
71
72 const int vl_zscan_normal[] =
73 {
74 /* Zig-Zag scan pattern */
75 0, 1, 8,16, 9, 2, 3,10,
76 17,24,32,25,18,11, 4, 5,
77 12,19,26,33,40,48,41,34,
78 27,20,13, 6, 7,14,21,28,
79 35,42,49,56,57,50,43,36,
80 29,22,15,23,30,37,44,51,
81 58,59,52,45,38,31,39,46,
82 53,60,61,54,47,55,62,63
83 };
84
85 const int vl_zscan_alternate[] =
86 {
87 /* Alternate scan pattern */
88 0, 8,16,24, 1, 9, 2,10,
89 17,25,32,40,48,56,57,49,
90 41,33,26,18, 3,11, 4,12,
91 19,27,34,42,50,58,35,43,
92 51,59,20,28, 5,13, 6,14,
93 21,29,36,44,52,60,37,45,
94 53,61,22,30, 7,15,23,31,
95 38,46,54,62,39,47,55,63
96 };
97
98 static void *
create_vert_shader(struct vl_zscan * zscan)99 create_vert_shader(struct vl_zscan *zscan)
100 {
101 struct ureg_program *shader;
102 struct ureg_src scale;
103 struct ureg_src vrect, vpos, block_num;
104 struct ureg_dst tmp;
105 struct ureg_dst o_vpos;
106 struct ureg_dst *o_vtex;
107 unsigned i;
108
109 shader = ureg_create(PIPE_SHADER_VERTEX);
110 if (!shader)
111 return NULL;
112
113 o_vtex = MALLOC(zscan->num_channels * sizeof(struct ureg_dst));
114
115 scale = ureg_imm2f(shader,
116 (float)VL_BLOCK_WIDTH / zscan->buffer_width,
117 (float)VL_BLOCK_HEIGHT / zscan->buffer_height);
118
119 vrect = ureg_DECL_vs_input(shader, VS_I_RECT);
120 vpos = ureg_DECL_vs_input(shader, VS_I_VPOS);
121 block_num = ureg_DECL_vs_input(shader, VS_I_BLOCK_NUM);
122
123 tmp = ureg_DECL_temporary(shader);
124
125 o_vpos = ureg_DECL_output(shader, TGSI_SEMANTIC_POSITION, VS_O_VPOS);
126
127 for (i = 0; i < zscan->num_channels; ++i)
128 o_vtex[i] = ureg_DECL_output(shader, TGSI_SEMANTIC_GENERIC, VS_O_VTEX + i);
129
130 /*
131 * o_vpos.xy = (vpos + vrect) * scale
132 * o_vpos.zw = 1.0f
133 *
134 * tmp.xy = InstanceID / blocks_per_line
135 * tmp.x = frac(tmp.x)
136 * tmp.y = floor(tmp.y)
137 *
138 * o_vtex.x = vrect.x / blocks_per_line + tmp.x
139 * o_vtex.y = vrect.y
140 * o_vtex.z = tmp.z * blocks_per_line / blocks_total
141 */
142 ureg_ADD(shader, ureg_writemask(tmp, TGSI_WRITEMASK_XY), vpos, vrect);
143 ureg_MUL(shader, ureg_writemask(o_vpos, TGSI_WRITEMASK_XY), ureg_src(tmp), scale);
144 ureg_MOV(shader, ureg_writemask(o_vpos, TGSI_WRITEMASK_ZW), ureg_imm1f(shader, 1.0f));
145
146 ureg_MUL(shader, ureg_writemask(tmp, TGSI_WRITEMASK_XW), ureg_scalar(block_num, TGSI_SWIZZLE_X),
147 ureg_imm1f(shader, 1.0f / zscan->blocks_per_line));
148
149 ureg_FRC(shader, ureg_writemask(tmp, TGSI_WRITEMASK_Y), ureg_scalar(ureg_src(tmp), TGSI_SWIZZLE_X));
150 ureg_FLR(shader, ureg_writemask(tmp, TGSI_WRITEMASK_W), ureg_src(tmp));
151
152 for (i = 0; i < zscan->num_channels; ++i) {
153 ureg_ADD(shader, ureg_writemask(tmp, TGSI_WRITEMASK_X), ureg_scalar(ureg_src(tmp), TGSI_SWIZZLE_Y),
154 ureg_imm1f(shader, 1.0f / (zscan->blocks_per_line * VL_BLOCK_WIDTH)
155 * ((signed)i - (signed)zscan->num_channels / 2)));
156
157 ureg_MAD(shader, ureg_writemask(o_vtex[i], TGSI_WRITEMASK_X), vrect,
158 ureg_imm1f(shader, 1.0f / zscan->blocks_per_line), ureg_src(tmp));
159 ureg_MOV(shader, ureg_writemask(o_vtex[i], TGSI_WRITEMASK_Y), vrect);
160 ureg_MOV(shader, ureg_writemask(o_vtex[i], TGSI_WRITEMASK_Z), vpos);
161 ureg_MUL(shader, ureg_writemask(o_vtex[i], TGSI_WRITEMASK_W), ureg_src(tmp),
162 ureg_imm1f(shader, (float)zscan->blocks_per_line / zscan->blocks_total));
163 }
164
165 ureg_release_temporary(shader, tmp);
166 ureg_END(shader);
167
168 FREE(o_vtex);
169
170 return ureg_create_shader_and_destroy(shader, zscan->pipe);
171 }
172
173 static void *
create_frag_shader(struct vl_zscan * zscan)174 create_frag_shader(struct vl_zscan *zscan)
175 {
176 struct ureg_program *shader;
177 struct ureg_src *vtex;
178
179 struct ureg_src samp_src, samp_scan, samp_quant;
180
181 struct ureg_dst *tmp;
182 struct ureg_dst quant, fragment;
183
184 unsigned i;
185
186 shader = ureg_create(PIPE_SHADER_FRAGMENT);
187 if (!shader)
188 return NULL;
189
190 vtex = MALLOC(zscan->num_channels * sizeof(struct ureg_src));
191 tmp = MALLOC(zscan->num_channels * sizeof(struct ureg_dst));
192
193 for (i = 0; i < zscan->num_channels; ++i)
194 vtex[i] = ureg_DECL_fs_input(shader, TGSI_SEMANTIC_GENERIC, VS_O_VTEX + i, TGSI_INTERPOLATE_LINEAR);
195
196 samp_src = ureg_DECL_sampler(shader, 0);
197 samp_scan = ureg_DECL_sampler(shader, 1);
198 samp_quant = ureg_DECL_sampler(shader, 2);
199
200 for (i = 0; i < zscan->num_channels; ++i)
201 tmp[i] = ureg_DECL_temporary(shader);
202 quant = ureg_DECL_temporary(shader);
203
204 fragment = ureg_DECL_output(shader, TGSI_SEMANTIC_COLOR, 0);
205
206 /*
207 * tmp.x = tex(vtex, 1)
208 * tmp.y = vtex.z
209 * fragment = tex(tmp, 0) * quant
210 */
211 for (i = 0; i < zscan->num_channels; ++i)
212 ureg_TEX(shader, ureg_writemask(tmp[i], TGSI_WRITEMASK_X), TGSI_TEXTURE_2D, vtex[i], samp_scan);
213
214 for (i = 0; i < zscan->num_channels; ++i)
215 ureg_MOV(shader, ureg_writemask(tmp[i], TGSI_WRITEMASK_Y), ureg_scalar(vtex[i], TGSI_SWIZZLE_W));
216
217 for (i = 0; i < zscan->num_channels; ++i) {
218 ureg_TEX(shader, ureg_writemask(tmp[0], TGSI_WRITEMASK_X << i), TGSI_TEXTURE_2D, ureg_src(tmp[i]), samp_src);
219 ureg_TEX(shader, ureg_writemask(quant, TGSI_WRITEMASK_X << i), TGSI_TEXTURE_3D, vtex[i], samp_quant);
220 }
221
222 ureg_MUL(shader, quant, ureg_src(quant), ureg_imm1f(shader, 16.0f));
223 ureg_MUL(shader, fragment, ureg_src(tmp[0]), ureg_src(quant));
224
225 for (i = 0; i < zscan->num_channels; ++i)
226 ureg_release_temporary(shader, tmp[i]);
227 ureg_END(shader);
228
229 FREE(vtex);
230 FREE(tmp);
231
232 return ureg_create_shader_and_destroy(shader, zscan->pipe);
233 }
234
235 static bool
init_shaders(struct vl_zscan * zscan)236 init_shaders(struct vl_zscan *zscan)
237 {
238 assert(zscan);
239
240 zscan->vs = create_vert_shader(zscan);
241 if (!zscan->vs)
242 goto error_vs;
243
244 zscan->fs = create_frag_shader(zscan);
245 if (!zscan->fs)
246 goto error_fs;
247
248 return true;
249
250 error_fs:
251 zscan->pipe->delete_vs_state(zscan->pipe, zscan->vs);
252
253 error_vs:
254 return false;
255 }
256
257 static void
cleanup_shaders(struct vl_zscan * zscan)258 cleanup_shaders(struct vl_zscan *zscan)
259 {
260 assert(zscan);
261
262 zscan->pipe->delete_vs_state(zscan->pipe, zscan->vs);
263 zscan->pipe->delete_fs_state(zscan->pipe, zscan->fs);
264 }
265
266 static bool
init_state(struct vl_zscan * zscan)267 init_state(struct vl_zscan *zscan)
268 {
269 struct pipe_blend_state blend;
270 struct pipe_rasterizer_state rs_state;
271 struct pipe_sampler_state sampler;
272 unsigned i;
273
274 assert(zscan);
275
276 memset(&rs_state, 0, sizeof(rs_state));
277 rs_state.half_pixel_center = true;
278 rs_state.bottom_edge_rule = true;
279 rs_state.depth_clip = 1;
280 zscan->rs_state = zscan->pipe->create_rasterizer_state(zscan->pipe, &rs_state);
281 if (!zscan->rs_state)
282 goto error_rs_state;
283
284 memset(&blend, 0, sizeof blend);
285
286 blend.independent_blend_enable = 0;
287 blend.rt[0].blend_enable = 0;
288 blend.rt[0].rgb_func = PIPE_BLEND_ADD;
289 blend.rt[0].rgb_src_factor = PIPE_BLENDFACTOR_ONE;
290 blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ONE;
291 blend.rt[0].alpha_func = PIPE_BLEND_ADD;
292 blend.rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE;
293 blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ONE;
294 blend.logicop_enable = 0;
295 blend.logicop_func = PIPE_LOGICOP_CLEAR;
296 /* Needed to allow color writes to FB, even if blending disabled */
297 blend.rt[0].colormask = PIPE_MASK_RGBA;
298 blend.dither = 0;
299 zscan->blend = zscan->pipe->create_blend_state(zscan->pipe, &blend);
300 if (!zscan->blend)
301 goto error_blend;
302
303 for (i = 0; i < 3; ++i) {
304 memset(&sampler, 0, sizeof(sampler));
305 sampler.wrap_s = PIPE_TEX_WRAP_REPEAT;
306 sampler.wrap_t = PIPE_TEX_WRAP_REPEAT;
307 sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
308 sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
309 sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
310 sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
311 sampler.compare_mode = PIPE_TEX_COMPARE_NONE;
312 sampler.compare_func = PIPE_FUNC_ALWAYS;
313 sampler.normalized_coords = 1;
314 zscan->samplers[i] = zscan->pipe->create_sampler_state(zscan->pipe, &sampler);
315 if (!zscan->samplers[i])
316 goto error_samplers;
317 }
318
319 return true;
320
321 error_samplers:
322 for (i = 0; i < 2; ++i)
323 if (zscan->samplers[i])
324 zscan->pipe->delete_sampler_state(zscan->pipe, zscan->samplers[i]);
325
326 zscan->pipe->delete_rasterizer_state(zscan->pipe, zscan->rs_state);
327
328 error_blend:
329 zscan->pipe->delete_blend_state(zscan->pipe, zscan->blend);
330
331 error_rs_state:
332 return false;
333 }
334
335 static void
cleanup_state(struct vl_zscan * zscan)336 cleanup_state(struct vl_zscan *zscan)
337 {
338 unsigned i;
339
340 assert(zscan);
341
342 for (i = 0; i < 3; ++i)
343 zscan->pipe->delete_sampler_state(zscan->pipe, zscan->samplers[i]);
344
345 zscan->pipe->delete_rasterizer_state(zscan->pipe, zscan->rs_state);
346 zscan->pipe->delete_blend_state(zscan->pipe, zscan->blend);
347 }
348
349 struct pipe_sampler_view *
vl_zscan_layout(struct pipe_context * pipe,const int layout[64],unsigned blocks_per_line)350 vl_zscan_layout(struct pipe_context *pipe, const int layout[64], unsigned blocks_per_line)
351 {
352 const unsigned total_size = blocks_per_line * VL_BLOCK_WIDTH * VL_BLOCK_HEIGHT;
353
354 int patched_layout[64];
355
356 struct pipe_resource res_tmpl, *res;
357 struct pipe_sampler_view sv_tmpl, *sv;
358 struct pipe_transfer *buf_transfer;
359 unsigned x, y, i, pitch;
360 float *f;
361
362 struct pipe_box rect =
363 {
364 0, 0, 0,
365 VL_BLOCK_WIDTH * blocks_per_line,
366 VL_BLOCK_HEIGHT,
367 1
368 };
369
370 assert(pipe && layout && blocks_per_line);
371
372 for (i = 0; i < 64; ++i)
373 patched_layout[layout[i]] = i;
374
375 memset(&res_tmpl, 0, sizeof(res_tmpl));
376 res_tmpl.target = PIPE_TEXTURE_2D;
377 res_tmpl.format = PIPE_FORMAT_R32_FLOAT;
378 res_tmpl.width0 = VL_BLOCK_WIDTH * blocks_per_line;
379 res_tmpl.height0 = VL_BLOCK_HEIGHT;
380 res_tmpl.depth0 = 1;
381 res_tmpl.array_size = 1;
382 res_tmpl.usage = PIPE_USAGE_IMMUTABLE;
383 res_tmpl.bind = PIPE_BIND_SAMPLER_VIEW;
384
385 res = pipe->screen->resource_create(pipe->screen, &res_tmpl);
386 if (!res)
387 goto error_resource;
388
389 f = pipe->transfer_map(pipe, res,
390 0, PIPE_TRANSFER_WRITE | PIPE_TRANSFER_DISCARD_RANGE,
391 &rect, &buf_transfer);
392 if (!f)
393 goto error_map;
394
395 pitch = buf_transfer->stride / sizeof(float);
396
397 for (i = 0; i < blocks_per_line; ++i)
398 for (y = 0; y < VL_BLOCK_HEIGHT; ++y)
399 for (x = 0; x < VL_BLOCK_WIDTH; ++x) {
400 float addr = patched_layout[x + y * VL_BLOCK_WIDTH] +
401 i * VL_BLOCK_WIDTH * VL_BLOCK_HEIGHT;
402
403 addr /= total_size;
404
405 f[i * VL_BLOCK_WIDTH + y * pitch + x] = addr;
406 }
407
408 pipe->transfer_unmap(pipe, buf_transfer);
409
410 memset(&sv_tmpl, 0, sizeof(sv_tmpl));
411 u_sampler_view_default_template(&sv_tmpl, res, res->format);
412 sv = pipe->create_sampler_view(pipe, res, &sv_tmpl);
413 pipe_resource_reference(&res, NULL);
414 if (!sv)
415 goto error_map;
416
417 return sv;
418
419 error_map:
420 pipe_resource_reference(&res, NULL);
421
422 error_resource:
423 return NULL;
424 }
425
426 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)427 vl_zscan_init(struct vl_zscan *zscan, struct pipe_context *pipe,
428 unsigned buffer_width, unsigned buffer_height,
429 unsigned blocks_per_line, unsigned blocks_total,
430 unsigned num_channels)
431 {
432 assert(zscan && pipe);
433
434 zscan->pipe = pipe;
435 zscan->buffer_width = buffer_width;
436 zscan->buffer_height = buffer_height;
437 zscan->num_channels = num_channels;
438 zscan->blocks_per_line = blocks_per_line;
439 zscan->blocks_total = blocks_total;
440
441 if(!init_shaders(zscan))
442 return false;
443
444 if(!init_state(zscan)) {
445 cleanup_shaders(zscan);
446 return false;
447 }
448
449 return true;
450 }
451
452 void
vl_zscan_cleanup(struct vl_zscan * zscan)453 vl_zscan_cleanup(struct vl_zscan *zscan)
454 {
455 assert(zscan);
456
457 cleanup_shaders(zscan);
458 cleanup_state(zscan);
459 }
460
461 bool
vl_zscan_init_buffer(struct vl_zscan * zscan,struct vl_zscan_buffer * buffer,struct pipe_sampler_view * src,struct pipe_surface * dst)462 vl_zscan_init_buffer(struct vl_zscan *zscan, struct vl_zscan_buffer *buffer,
463 struct pipe_sampler_view *src, struct pipe_surface *dst)
464 {
465 struct pipe_resource res_tmpl, *res;
466 struct pipe_sampler_view sv_tmpl;
467
468 assert(zscan && buffer);
469
470 memset(buffer, 0, sizeof(struct vl_zscan_buffer));
471
472 pipe_sampler_view_reference(&buffer->src, src);
473
474 buffer->viewport.scale[0] = dst->width;
475 buffer->viewport.scale[1] = dst->height;
476 buffer->viewport.scale[2] = 1;
477 buffer->viewport.translate[0] = 0;
478 buffer->viewport.translate[1] = 0;
479 buffer->viewport.translate[2] = 0;
480
481 buffer->fb_state.width = dst->width;
482 buffer->fb_state.height = dst->height;
483 buffer->fb_state.nr_cbufs = 1;
484 pipe_surface_reference(&buffer->fb_state.cbufs[0], dst);
485
486 memset(&res_tmpl, 0, sizeof(res_tmpl));
487 res_tmpl.target = PIPE_TEXTURE_3D;
488 res_tmpl.format = PIPE_FORMAT_R8_UNORM;
489 res_tmpl.width0 = VL_BLOCK_WIDTH * zscan->blocks_per_line;
490 res_tmpl.height0 = VL_BLOCK_HEIGHT;
491 res_tmpl.depth0 = 2;
492 res_tmpl.array_size = 1;
493 res_tmpl.usage = PIPE_USAGE_IMMUTABLE;
494 res_tmpl.bind = PIPE_BIND_SAMPLER_VIEW;
495
496 res = zscan->pipe->screen->resource_create(zscan->pipe->screen, &res_tmpl);
497 if (!res)
498 return false;
499
500 memset(&sv_tmpl, 0, sizeof(sv_tmpl));
501 u_sampler_view_default_template(&sv_tmpl, res, res->format);
502 sv_tmpl.swizzle_r = sv_tmpl.swizzle_g = sv_tmpl.swizzle_b = sv_tmpl.swizzle_a = TGSI_SWIZZLE_X;
503 buffer->quant = zscan->pipe->create_sampler_view(zscan->pipe, res, &sv_tmpl);
504 pipe_resource_reference(&res, NULL);
505 if (!buffer->quant)
506 return false;
507
508 return true;
509 }
510
511 void
vl_zscan_cleanup_buffer(struct vl_zscan_buffer * buffer)512 vl_zscan_cleanup_buffer(struct vl_zscan_buffer *buffer)
513 {
514 assert(buffer);
515
516 pipe_sampler_view_reference(&buffer->src, NULL);
517 pipe_sampler_view_reference(&buffer->layout, NULL);
518 pipe_sampler_view_reference(&buffer->quant, NULL);
519 pipe_surface_reference(&buffer->fb_state.cbufs[0], NULL);
520 }
521
522 void
vl_zscan_set_layout(struct vl_zscan_buffer * buffer,struct pipe_sampler_view * layout)523 vl_zscan_set_layout(struct vl_zscan_buffer *buffer, struct pipe_sampler_view *layout)
524 {
525 assert(buffer);
526 assert(layout);
527
528 pipe_sampler_view_reference(&buffer->layout, layout);
529 }
530
531 void
vl_zscan_upload_quant(struct vl_zscan * zscan,struct vl_zscan_buffer * buffer,const uint8_t matrix[64],bool intra)532 vl_zscan_upload_quant(struct vl_zscan *zscan, struct vl_zscan_buffer *buffer,
533 const uint8_t matrix[64], bool intra)
534 {
535 struct pipe_context *pipe;
536 struct pipe_transfer *buf_transfer;
537 unsigned x, y, i, pitch;
538 uint8_t *data;
539
540 struct pipe_box rect =
541 {
542 0, 0, intra ? 1 : 0,
543 VL_BLOCK_WIDTH,
544 VL_BLOCK_HEIGHT,
545 1
546 };
547
548 assert(buffer);
549 assert(matrix);
550
551 pipe = zscan->pipe;
552
553 rect.width *= zscan->blocks_per_line;
554
555 data = pipe->transfer_map(pipe, buffer->quant->texture,
556 0, PIPE_TRANSFER_WRITE |
557 PIPE_TRANSFER_DISCARD_RANGE,
558 &rect, &buf_transfer);
559 if (!data)
560 return;
561
562 pitch = buf_transfer->stride;
563
564 for (i = 0; i < zscan->blocks_per_line; ++i)
565 for (y = 0; y < VL_BLOCK_HEIGHT; ++y)
566 for (x = 0; x < VL_BLOCK_WIDTH; ++x)
567 data[i * VL_BLOCK_WIDTH + y * pitch + x] = matrix[x + y * VL_BLOCK_WIDTH];
568
569 pipe->transfer_unmap(pipe, buf_transfer);
570 }
571
572 void
vl_zscan_render(struct vl_zscan * zscan,struct vl_zscan_buffer * buffer,unsigned num_instances)573 vl_zscan_render(struct vl_zscan *zscan, struct vl_zscan_buffer *buffer, unsigned num_instances)
574 {
575 assert(buffer);
576
577 zscan->pipe->bind_rasterizer_state(zscan->pipe, zscan->rs_state);
578 zscan->pipe->bind_blend_state(zscan->pipe, zscan->blend);
579 zscan->pipe->bind_sampler_states(zscan->pipe, PIPE_SHADER_FRAGMENT,
580 0, 3, zscan->samplers);
581 zscan->pipe->set_framebuffer_state(zscan->pipe, &buffer->fb_state);
582 zscan->pipe->set_viewport_states(zscan->pipe, 0, 1, &buffer->viewport);
583 zscan->pipe->set_sampler_views(zscan->pipe, PIPE_SHADER_FRAGMENT,
584 0, 3, &buffer->src);
585 zscan->pipe->bind_vs_state(zscan->pipe, zscan->vs);
586 zscan->pipe->bind_fs_state(zscan->pipe, zscan->fs);
587 util_draw_arrays_instanced(zscan->pipe, PIPE_PRIM_QUADS, 0, 4, 0, num_instances);
588 }
589