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
46enum VS_OUTPUT
47{
48   VS_O_VPOS = 0,
49   VS_O_VTEX = 0
50};
51
52const 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
59const 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
72const 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
85const 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
98static void *
99create_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
173static void *
174create_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
235static bool
236init_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
250error_fs:
251   zscan->pipe->delete_vs_state(zscan->pipe, zscan->vs);
252
253error_vs:
254   return false;
255}
256
257static void
258cleanup_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
266static bool
267init_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
321error_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
328error_blend:
329   zscan->pipe->delete_blend_state(zscan->pipe, zscan->blend);
330
331error_rs_state:
332   return false;
333}
334
335static void
336cleanup_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
349struct pipe_sampler_view *
350vl_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
419error_map:
420   pipe_resource_reference(&res, NULL);
421
422error_resource:
423   return NULL;
424}
425
426bool
427vl_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
452void
453vl_zscan_cleanup(struct vl_zscan *zscan)
454{
455   assert(zscan);
456
457   cleanup_shaders(zscan);
458   cleanup_state(zscan);
459}
460
461bool
462vl_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
511void
512vl_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
522void
523vl_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
531void
532vl_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
572void
573vl_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