1/*
2 * Copyright 2012 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
18 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
19 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 *
22 * Authors: Ben Skeggs
23 *
24 */
25
26#include "util/u_format.h"
27#include "util/u_math.h"
28#include "util/u_half.h"
29
30#include "nouveau/nv_object.xml.h"
31#include "nv30-40_3d.xml.h"
32#include "nv30_context.h"
33#include "nv30_format.h"
34
35static void
36nv30_validate_fb(struct nv30_context *nv30)
37{
38   struct pipe_screen *pscreen = &nv30->screen->base.base;
39   struct pipe_framebuffer_state *fb = &nv30->framebuffer;
40   struct nouveau_pushbuf *push = nv30->base.pushbuf;
41   struct nouveau_object *eng3d = nv30->screen->eng3d;
42   uint32_t rt_format;
43   int h = fb->height;
44   int w = fb->width;
45   int x = 0;
46   int y = 0;
47
48   nv30->state.rt_enable = (NV30_3D_RT_ENABLE_COLOR0 << fb->nr_cbufs) - 1;
49   if (nv30->state.rt_enable > 1)
50      nv30->state.rt_enable |= NV30_3D_RT_ENABLE_MRT;
51
52   rt_format = 0;
53   if (fb->nr_cbufs > 0) {
54      struct nv30_miptree *mt = nv30_miptree(fb->cbufs[0]->texture);
55      rt_format |= nv30_format(pscreen, fb->cbufs[0]->format)->hw;
56      rt_format |= mt->ms_mode;
57      if (mt->swizzled)
58         rt_format |= NV30_3D_RT_FORMAT_TYPE_SWIZZLED;
59      else
60         rt_format |= NV30_3D_RT_FORMAT_TYPE_LINEAR;
61   } else {
62      if (fb->zsbuf && util_format_get_blocksize(fb->zsbuf->format) > 2)
63         rt_format |= NV30_3D_RT_FORMAT_COLOR_A8R8G8B8;
64      else
65         rt_format |= NV30_3D_RT_FORMAT_COLOR_R5G6B5;
66   }
67
68   if (fb->zsbuf) {
69      rt_format |= nv30_format(pscreen, fb->zsbuf->format)->hw;
70      if (nv30_miptree(fb->zsbuf->texture)->swizzled)
71         rt_format |= NV30_3D_RT_FORMAT_TYPE_SWIZZLED;
72      else
73         rt_format |= NV30_3D_RT_FORMAT_TYPE_LINEAR;
74   } else {
75      if (fb->nr_cbufs && util_format_get_blocksize(fb->cbufs[0]->format) > 2)
76         rt_format |= NV30_3D_RT_FORMAT_ZETA_Z24S8;
77      else
78         rt_format |= NV30_3D_RT_FORMAT_ZETA_Z16;
79   }
80
81   /* hardware rounds down render target offset to 64 bytes, but surfaces
82    * with a size of 2x2 pixel (16bpp) or 1x1 pixel (32bpp) have an
83    * unaligned start aaddress.  For these two important square formats
84    * we can hack around this limitation by adjusting the viewport origin
85    */
86   if (nv30->state.rt_enable) {
87      int off = nv30_surface(fb->cbufs[0])->offset & 63;
88      if (off) {
89         x += off / (util_format_get_blocksize(fb->cbufs[0]->format) * 2);
90         w  = 16;
91         h  = 2;
92      }
93   }
94
95   if (rt_format & NV30_3D_RT_FORMAT_TYPE_SWIZZLED) {
96      rt_format |= util_logbase2(w) << 16;
97      rt_format |= util_logbase2(h) << 24;
98   }
99
100   if (!PUSH_SPACE(push, 64))
101      return;
102   PUSH_RESET(push, BUFCTX_FB);
103
104   BEGIN_NV04(push, SUBC_3D(0x1da4), 1);
105   PUSH_DATA (push, 0);
106   BEGIN_NV04(push, NV30_3D(RT_HORIZ), 3);
107   PUSH_DATA (push, w << 16);
108   PUSH_DATA (push, h << 16);
109   PUSH_DATA (push, rt_format);
110   BEGIN_NV04(push, NV30_3D(VIEWPORT_HORIZ), 2);
111   PUSH_DATA (push, w << 16);
112   PUSH_DATA (push, h << 16);
113   BEGIN_NV04(push, NV30_3D(VIEWPORT_TX_ORIGIN), 4);
114   PUSH_DATA (push, (y << 16) | x);
115   PUSH_DATA (push, 0);
116   PUSH_DATA (push, ((w - 1) << 16) | 0);
117   PUSH_DATA (push, ((h - 1) << 16) | 0);
118
119   if ((nv30->state.rt_enable & NV30_3D_RT_ENABLE_COLOR0) || fb->zsbuf) {
120      struct nv30_surface *rsf = nv30_surface(fb->cbufs[0]);
121      struct nv30_surface *zsf = nv30_surface(fb->zsbuf);
122      struct nouveau_bo *rbo, *zbo;
123
124      if (!rsf)      rsf = zsf;
125      else if (!zsf) zsf = rsf;
126      rbo = nv30_miptree(rsf->base.texture)->base.bo;
127      zbo = nv30_miptree(zsf->base.texture)->base.bo;
128
129      if (eng3d->oclass >= NV40_3D_CLASS) {
130         BEGIN_NV04(push, NV40_3D(ZETA_PITCH), 1);
131         PUSH_DATA (push, zsf->pitch);
132         BEGIN_NV04(push, NV40_3D(COLOR0_PITCH), 3);
133         PUSH_DATA (push, rsf->pitch);
134      } else {
135         BEGIN_NV04(push, NV30_3D(COLOR0_PITCH), 3);
136         PUSH_DATA (push, (zsf->pitch << 16) | rsf->pitch);
137      }
138      PUSH_MTHDl(push, NV30_3D(COLOR0_OFFSET), BUFCTX_FB, rbo, rsf->offset & ~63,
139                       NOUVEAU_BO_VRAM | NOUVEAU_BO_RDWR);
140      PUSH_MTHDl(push, NV30_3D(ZETA_OFFSET), BUFCTX_FB, zbo, zsf->offset & ~63,
141                       NOUVEAU_BO_VRAM | NOUVEAU_BO_RDWR);
142   }
143
144   if (nv30->state.rt_enable & NV30_3D_RT_ENABLE_COLOR1) {
145      struct nv30_surface *sf = nv30_surface(fb->cbufs[1]);
146      struct nouveau_bo *bo = nv30_miptree(sf->base.texture)->base.bo;
147
148      BEGIN_NV04(push, NV30_3D(COLOR1_OFFSET), 2);
149      PUSH_MTHDl(push, NV30_3D(COLOR1_OFFSET), BUFCTX_FB, bo, sf->offset,
150                       NOUVEAU_BO_VRAM | NOUVEAU_BO_RDWR);
151      PUSH_DATA (push, sf->pitch);
152   }
153
154   if (nv30->state.rt_enable & NV40_3D_RT_ENABLE_COLOR2) {
155      struct nv30_surface *sf = nv30_surface(fb->cbufs[2]);
156      struct nouveau_bo *bo = nv30_miptree(sf->base.texture)->base.bo;
157
158      BEGIN_NV04(push, NV40_3D(COLOR2_OFFSET), 1);
159      PUSH_MTHDl(push, NV40_3D(COLOR2_OFFSET), BUFCTX_FB, bo, sf->offset,
160                       NOUVEAU_BO_VRAM | NOUVEAU_BO_RDWR);
161      BEGIN_NV04(push, NV40_3D(COLOR2_PITCH), 1);
162      PUSH_DATA (push, sf->pitch);
163   }
164
165   if (nv30->state.rt_enable & NV40_3D_RT_ENABLE_COLOR3) {
166      struct nv30_surface *sf = nv30_surface(fb->cbufs[3]);
167      struct nouveau_bo *bo = nv30_miptree(sf->base.texture)->base.bo;
168
169      BEGIN_NV04(push, NV40_3D(COLOR3_OFFSET), 1);
170      PUSH_MTHDl(push, NV40_3D(COLOR3_OFFSET), BUFCTX_FB, bo, sf->offset,
171                       NOUVEAU_BO_VRAM | NOUVEAU_BO_RDWR);
172      BEGIN_NV04(push, NV40_3D(COLOR3_PITCH), 1);
173      PUSH_DATA (push, sf->pitch);
174   }
175}
176
177static void
178nv30_validate_blend_colour(struct nv30_context *nv30)
179{
180   struct nouveau_pushbuf *push = nv30->base.pushbuf;
181   float *rgba = nv30->blend_colour.color;
182
183   if (nv30->framebuffer.nr_cbufs) {
184      switch (nv30->framebuffer.cbufs[0]->format) {
185      case PIPE_FORMAT_R16G16B16A16_FLOAT:
186      case PIPE_FORMAT_R32G32B32A32_FLOAT:
187         BEGIN_NV04(push, NV30_3D(BLEND_COLOR), 1);
188         PUSH_DATA (push, (util_float_to_half(rgba[0]) <<  0) |
189                          (util_float_to_half(rgba[1]) << 16));
190         BEGIN_NV04(push, SUBC_3D(0x037c), 1);
191         PUSH_DATA (push, (util_float_to_half(rgba[2]) <<  0) |
192                          (util_float_to_half(rgba[3]) << 16));
193         break;
194      default:
195         break;
196      }
197   }
198
199   BEGIN_NV04(push, NV30_3D(BLEND_COLOR), 1);
200   PUSH_DATA (push, (float_to_ubyte(rgba[3]) << 24) |
201                    (float_to_ubyte(rgba[0]) << 16) |
202                    (float_to_ubyte(rgba[1]) <<  8) |
203                    (float_to_ubyte(rgba[2]) <<  0));
204}
205
206static void
207nv30_validate_stencil_ref(struct nv30_context *nv30)
208{
209   struct nouveau_pushbuf *push = nv30->base.pushbuf;
210
211   BEGIN_NV04(push, NV30_3D(STENCIL_FUNC_REF(0)), 1);
212   PUSH_DATA (push, nv30->stencil_ref.ref_value[0]);
213   BEGIN_NV04(push, NV30_3D(STENCIL_FUNC_REF(1)), 1);
214   PUSH_DATA (push, nv30->stencil_ref.ref_value[1]);
215}
216
217static void
218nv30_validate_stipple(struct nv30_context *nv30)
219{
220   struct nouveau_pushbuf *push = nv30->base.pushbuf;
221
222   BEGIN_NV04(push, NV30_3D(POLYGON_STIPPLE_PATTERN(0)), 32);
223   PUSH_DATAp(push, nv30->stipple.stipple, 32);
224}
225
226static void
227nv30_validate_scissor(struct nv30_context *nv30)
228{
229   struct nouveau_pushbuf *push = nv30->base.pushbuf;
230   struct pipe_scissor_state *s = &nv30->scissor;
231
232   if (!(nv30->dirty & NV30_NEW_SCISSOR) &&
233       nv30->rast->pipe.scissor != nv30->state.scissor_off)
234      return;
235   nv30->state.scissor_off = !nv30->rast->pipe.scissor;
236
237   BEGIN_NV04(push, NV30_3D(SCISSOR_HORIZ), 2);
238   if (nv30->rast->pipe.scissor) {
239      PUSH_DATA (push, ((s->maxx - s->minx) << 16) | s->minx);
240      PUSH_DATA (push, ((s->maxy - s->miny) << 16) | s->miny);
241   } else {
242      PUSH_DATA (push, 0x10000000);
243      PUSH_DATA (push, 0x10000000);
244   }
245}
246
247static void
248nv30_validate_viewport(struct nv30_context *nv30)
249{
250   struct nouveau_pushbuf *push = nv30->base.pushbuf;
251   struct pipe_viewport_state *vp = &nv30->viewport;
252
253   BEGIN_NV04(push, NV30_3D(VIEWPORT_TRANSLATE_X), 8);
254   PUSH_DATAf(push, vp->translate[0]);
255   PUSH_DATAf(push, vp->translate[1]);
256   PUSH_DATAf(push, vp->translate[2]);
257   PUSH_DATAf(push, vp->translate[3]);
258   PUSH_DATAf(push, vp->scale[0]);
259   PUSH_DATAf(push, vp->scale[1]);
260   PUSH_DATAf(push, vp->scale[2]);
261   PUSH_DATAf(push, vp->scale[3]);
262   BEGIN_NV04(push, NV30_3D(DEPTH_RANGE_NEAR), 2);
263   PUSH_DATAf(push, vp->translate[2] - fabsf(vp->scale[2]));
264   PUSH_DATAf(push, vp->translate[2] + fabsf(vp->scale[2]));
265}
266
267static void
268nv30_validate_clip(struct nv30_context *nv30)
269{
270   struct nouveau_pushbuf *push = nv30->base.pushbuf;
271   unsigned i;
272   uint32_t clpd_enable = 0;
273
274   for (i = 0; i < 6; i++) {
275      if (nv30->rast->pipe.clip_plane_enable & (1 << i)) {
276         if (nv30->dirty & NV30_NEW_CLIP) {
277            BEGIN_NV04(push, NV30_3D(VP_UPLOAD_CONST_ID), 5);
278            PUSH_DATA (push, i);
279            PUSH_DATAp(push, nv30->clip.ucp[i], 4);
280         }
281
282         clpd_enable |= 1 << (1 + 4*i);
283      }
284   }
285
286   BEGIN_NV04(push, NV30_3D(VP_CLIP_PLANES_ENABLE), 1);
287   PUSH_DATA (push, clpd_enable);
288}
289
290static void
291nv30_validate_blend(struct nv30_context *nv30)
292{
293   struct nouveau_pushbuf *push = nv30->base.pushbuf;
294
295   PUSH_SPACE(push, nv30->blend->size);
296   PUSH_DATAp(push, nv30->blend->data, nv30->blend->size);
297}
298
299static void
300nv30_validate_zsa(struct nv30_context *nv30)
301{
302   struct nouveau_pushbuf *push = nv30->base.pushbuf;
303
304   PUSH_SPACE(push, nv30->zsa->size);
305   PUSH_DATAp(push, nv30->zsa->data, nv30->zsa->size);
306}
307
308static void
309nv30_validate_rasterizer(struct nv30_context *nv30)
310{
311   struct nouveau_pushbuf *push = nv30->base.pushbuf;
312
313   PUSH_SPACE(push, nv30->rast->size);
314   PUSH_DATAp(push, nv30->rast->data, nv30->rast->size);
315}
316
317static void
318nv30_validate_multisample(struct nv30_context *nv30)
319{
320   struct pipe_rasterizer_state *rasterizer = &nv30->rast->pipe;
321   struct pipe_blend_state *blend = &nv30->blend->pipe;
322   struct nouveau_pushbuf *push = nv30->base.pushbuf;
323   uint32_t ctrl = nv30->sample_mask << 16;
324
325   if (blend->alpha_to_one)
326      ctrl |= 0x00000100;
327   if (blend->alpha_to_coverage)
328      ctrl |= 0x00000010;
329   if (rasterizer->multisample)
330      ctrl |= 0x00000001;
331
332   BEGIN_NV04(push, NV30_3D(MULTISAMPLE_CONTROL), 1);
333   PUSH_DATA (push, ctrl);
334}
335
336static void
337nv30_validate_fragment(struct nv30_context *nv30)
338{
339   struct nouveau_pushbuf *push = nv30->base.pushbuf;
340   struct nv30_fragprog *fp = nv30->fragprog.program;
341
342   BEGIN_NV04(push, NV30_3D(RT_ENABLE), 1);
343   PUSH_DATA (push, nv30->state.rt_enable & ~fp->rt_enable);
344   BEGIN_NV04(push, NV30_3D(COORD_CONVENTIONS), 1);
345   PUSH_DATA (push, fp->coord_conventions | nv30->framebuffer.height);
346}
347
348static void
349nv30_validate_point_coord(struct nv30_context *nv30)
350{
351   struct pipe_rasterizer_state *rasterizer = &nv30->rast->pipe;
352   struct nouveau_pushbuf *push = nv30->base.pushbuf;
353   struct nv30_fragprog *fp = nv30->fragprog.program;
354   uint32_t hw = 0x00000000;
355
356   if (rasterizer) {
357      hw |= (nv30->rast->pipe.sprite_coord_enable & 0xff) << 8;
358      if (fp)
359         hw |= fp->point_sprite_control;
360
361      if (rasterizer->sprite_coord_mode == PIPE_SPRITE_COORD_LOWER_LEFT) {
362         if (hw)
363            nv30->draw_flags |= NV30_NEW_RASTERIZER;
364      } else
365      if (rasterizer->point_quad_rasterization) {
366         hw |= NV30_3D_POINT_SPRITE_ENABLE;
367      }
368   }
369
370   BEGIN_NV04(push, NV30_3D(POINT_SPRITE), 1);
371   PUSH_DATA (push, hw);
372}
373
374struct state_validate {
375   void (*func)(struct nv30_context *);
376   uint32_t mask;
377};
378
379static struct state_validate hwtnl_validate_list[] = {
380    { nv30_validate_fb,            NV30_NEW_FRAMEBUFFER },
381    { nv30_validate_blend,         NV30_NEW_BLEND },
382    { nv30_validate_zsa,           NV30_NEW_ZSA },
383    { nv30_validate_rasterizer,    NV30_NEW_RASTERIZER },
384    { nv30_validate_multisample,   NV30_NEW_SAMPLE_MASK | NV30_NEW_BLEND |
385                                   NV30_NEW_RASTERIZER },
386    { nv30_validate_blend_colour,  NV30_NEW_BLEND_COLOUR |
387                                   NV30_NEW_FRAMEBUFFER },
388    { nv30_validate_stencil_ref,   NV30_NEW_STENCIL_REF },
389    { nv30_validate_stipple,       NV30_NEW_STIPPLE },
390    { nv30_validate_scissor,       NV30_NEW_SCISSOR | NV30_NEW_RASTERIZER },
391    { nv30_validate_viewport,      NV30_NEW_VIEWPORT },
392    { nv30_validate_clip,          NV30_NEW_CLIP },
393    { nv30_fragprog_validate,      NV30_NEW_FRAGPROG | NV30_NEW_FRAGCONST },
394    { nv30_vertprog_validate,      NV30_NEW_VERTPROG | NV30_NEW_VERTCONST |
395                                   NV30_NEW_FRAGPROG | NV30_NEW_RASTERIZER },
396    { nv30_validate_fragment,      NV30_NEW_FRAMEBUFFER | NV30_NEW_FRAGPROG },
397    { nv30_validate_point_coord,   NV30_NEW_RASTERIZER | NV30_NEW_FRAGPROG },
398    { nv30_fragtex_validate,       NV30_NEW_FRAGTEX },
399    { nv40_verttex_validate,       NV30_NEW_VERTTEX },
400    { nv30_vbo_validate,           NV30_NEW_VERTEX | NV30_NEW_ARRAYS },
401    {}
402};
403
404#define NV30_SWTNL_MASK (NV30_NEW_VIEWPORT |  \
405                         NV30_NEW_CLIP |      \
406                         NV30_NEW_VERTPROG |  \
407                         NV30_NEW_VERTCONST | \
408                         NV30_NEW_VERTTEX |   \
409                         NV30_NEW_VERTEX |    \
410                         NV30_NEW_ARRAYS)
411
412static struct state_validate swtnl_validate_list[] = {
413    { nv30_validate_fb,            NV30_NEW_FRAMEBUFFER },
414    { nv30_validate_blend,         NV30_NEW_BLEND },
415    { nv30_validate_zsa,           NV30_NEW_ZSA },
416    { nv30_validate_rasterizer,    NV30_NEW_RASTERIZER },
417    { nv30_validate_multisample,   NV30_NEW_SAMPLE_MASK | NV30_NEW_BLEND |
418                                   NV30_NEW_RASTERIZER },
419    { nv30_validate_blend_colour,  NV30_NEW_BLEND_COLOUR |
420                                   NV30_NEW_FRAMEBUFFER },
421    { nv30_validate_stencil_ref,   NV30_NEW_STENCIL_REF },
422    { nv30_validate_stipple,       NV30_NEW_STIPPLE },
423    { nv30_validate_scissor,       NV30_NEW_SCISSOR | NV30_NEW_RASTERIZER },
424    { nv30_fragprog_validate,      NV30_NEW_FRAGPROG | NV30_NEW_FRAGCONST },
425    { nv30_validate_fragment,      NV30_NEW_FRAMEBUFFER | NV30_NEW_FRAGPROG },
426    { nv30_fragtex_validate,       NV30_NEW_FRAGTEX },
427    {}
428};
429
430static void
431nv30_state_context_switch(struct nv30_context *nv30)
432{
433   struct nv30_context *prev = nv30->screen->cur_ctx;
434
435   if (prev)
436      nv30->state = prev->state;
437   nv30->dirty = NV30_NEW_ALL;
438
439   if (!nv30->vertex)
440      nv30->dirty &= ~(NV30_NEW_VERTEX | NV30_NEW_ARRAYS);
441
442   if (!nv30->vertprog.program)
443      nv30->dirty &= ~NV30_NEW_VERTPROG;
444   if (!nv30->fragprog.program)
445      nv30->dirty &= ~NV30_NEW_FRAGPROG;
446
447   if (!nv30->blend)
448      nv30->dirty &= ~NV30_NEW_BLEND;
449   if (!nv30->rast)
450      nv30->dirty &= ~NV30_NEW_RASTERIZER;
451   if (!nv30->zsa)
452      nv30->dirty &= ~NV30_NEW_ZSA;
453
454   nv30->screen->cur_ctx = nv30;
455   nv30->base.pushbuf->user_priv = &nv30->bufctx;
456}
457
458boolean
459nv30_state_validate(struct nv30_context *nv30, boolean hwtnl)
460{
461   struct nouveau_screen *screen = &nv30->screen->base;
462   struct nouveau_pushbuf *push = nv30->base.pushbuf;
463   struct nouveau_bufctx *bctx = nv30->bufctx;
464   struct nouveau_bufref *bref;
465   struct state_validate *validate;
466
467   if (nv30->screen->cur_ctx != nv30)
468      nv30_state_context_switch(nv30);
469
470   if (hwtnl) {
471      nv30->draw_dirty |= nv30->dirty;
472      if (nv30->draw_flags) {
473         nv30->draw_flags &= ~nv30->dirty;
474         if (!nv30->draw_flags)
475            nv30->dirty |= NV30_SWTNL_MASK;
476      }
477   }
478
479   if (!nv30->draw_flags)
480      validate = hwtnl_validate_list;
481   else
482      validate = swtnl_validate_list;
483
484   if (nv30->dirty) {
485      while (validate->func) {
486         if (nv30->dirty & validate->mask)
487            validate->func(nv30);
488         validate++;
489      }
490
491      nv30->dirty = 0;
492   }
493
494   nouveau_pushbuf_bufctx(push, bctx);
495   if (nouveau_pushbuf_validate(push)) {
496      nouveau_pushbuf_bufctx(push, NULL);
497      return FALSE;
498   }
499
500   /*XXX*/
501   BEGIN_NV04(push, NV30_3D(VTX_CACHE_INVALIDATE_1710), 1);
502   PUSH_DATA (push, 0);
503   if (nv30->screen->eng3d->oclass >= NV40_3D_CLASS) {
504      BEGIN_NV04(push, NV40_3D(TEX_CACHE_CTL), 1);
505      PUSH_DATA (push, 2);
506      BEGIN_NV04(push, NV40_3D(TEX_CACHE_CTL), 1);
507      PUSH_DATA (push, 1);
508      BEGIN_NV04(push, NV30_3D(R1718), 1);
509      PUSH_DATA (push, 0);
510      BEGIN_NV04(push, NV30_3D(R1718), 1);
511      PUSH_DATA (push, 0);
512      BEGIN_NV04(push, NV30_3D(R1718), 1);
513      PUSH_DATA (push, 0);
514   }
515
516   LIST_FOR_EACH_ENTRY(bref, &bctx->current, thead) {
517      struct nv04_resource *res = bref->priv;
518      if (res && res->mm) {
519         nouveau_fence_ref(screen->fence.current, &res->fence);
520
521         if (bref->flags & NOUVEAU_BO_RD)
522            res->status |= NOUVEAU_BUFFER_STATUS_GPU_READING;
523
524         if (bref->flags & NOUVEAU_BO_WR) {
525            nouveau_fence_ref(screen->fence.current, &res->fence_wr);
526            res->status |= NOUVEAU_BUFFER_STATUS_GPU_WRITING;
527         }
528      }
529   }
530
531   return TRUE;
532}
533
534void
535nv30_state_release(struct nv30_context *nv30)
536{
537   nouveau_pushbuf_bufctx(nv30->base.pushbuf, NULL);
538}
539