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