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      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 
     35 static void
     36 nv30_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 
    177 static void
    178 nv30_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 
    206 static void
    207 nv30_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 
    217 static void
    218 nv30_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 
    226 static void
    227 nv30_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 
    247 static void
    248 nv30_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 
    267 static void
    268 nv30_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 
    290 static void
    291 nv30_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 
    299 static void
    300 nv30_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 
    308 static void
    309 nv30_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 
    317 static void
    318 nv30_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 
    336 static void
    337 nv30_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 
    348 static void
    349 nv30_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 
    374 struct state_validate {
    375    void (*func)(struct nv30_context *);
    376    uint32_t mask;
    377 };
    378 
    379 static 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 
    412 static 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 
    430 static void
    431 nv30_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 
    458 boolean
    459 nv30_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 
    534 void
    535 nv30_state_release(struct nv30_context *nv30)
    536 {
    537    nouveau_pushbuf_bufctx(nv30->base.pushbuf, NULL);
    538 }
    539