src/gallium/drivers/nv30/nv30_draw.c

   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 "draw/draw_context.h"
  27 #include "draw/draw_vertex.h"
  28 #include "draw/draw_pipe.h"
  29 #include "draw/draw_vbuf.h"
  30 #include "draw/draw_private.h"
  31
  32 #include "nouveau/nv_object.xml.h"
  33 #include "nv30-40_3d.xml.h"
  34 #include "nv30_context.h"
  35 #include "nv30_format.h"
  36
  37 struct nv30_render {
  38    struct vbuf_render base;
  39    struct nv30_context *nv30;
  40
  41    struct pipe_transfer *transfer;
  42    struct pipe_resource *buffer;
  43    unsigned offset;
  44    unsigned length;
  45
  46    struct vertex_info vertex_info;
  47
  48    struct nouveau_heap *vertprog;
  49    uint32_t vtxprog[16][4];
  50    uint32_t vtxfmt[16];
  51    uint32_t vtxptr[16];
  52    uint32_t prim;
  53 };
  54
  55 static INLINE struct nv30_render *
  56 nv30_render(struct vbuf_render *render)
  57 {
  58    return (struct nv30_render *)render;
  59 }
  60
  61 static const struct vertex_info *
  62 nv30_render_get_vertex_info(struct vbuf_render *render)
  63 {
  64    return &nv30_render(render)->vertex_info;
  65 }
  66
  67 static boolean
  68 nv30_render_allocate_vertices(struct vbuf_render *render,
  69                               ushort vertex_size, ushort nr_vertices)
  70 {
  71    struct nv30_render *r = nv30_render(render);
  72    struct nv30_context *nv30 = r->nv30;
  73
  74    r->length = vertex_size * nr_vertices;
  75
  76    if (r->offset + r->length >= render->max_vertex_buffer_bytes) {
  77       pipe_resource_reference(&r->buffer, NULL);
  78       r->buffer = pipe_buffer_create(&nv30->screen->base.base,
  79                                      PIPE_BIND_VERTEX_BUFFER, 0,
  80                                      render->max_vertex_buffer_bytes);
  81       if (!r->buffer)
  82          return FALSE;
  83
  84       r->offset = 0;
  85    }
  86
  87    return TRUE;
  88 }
  89
  90 static void *
  91 nv30_render_map_vertices(struct vbuf_render *render)
  92 {
  93    struct nv30_render *r = nv30_render(render);
  94    char *map = pipe_buffer_map(&r->nv30->base.pipe, r->buffer,
  95                                PIPE_TRANSFER_WRITE |
  96                                PIPE_TRANSFER_UNSYNCHRONIZED, &r->transfer);
  97    return map + r->offset;
  98 }
  99
 100 static void
 101 nv30_render_unmap_vertices(struct vbuf_render *render,
 102                            ushort min_index, ushort max_index)
 103 {
 104    struct nv30_render *r = nv30_render(render);
 105    pipe_buffer_unmap(&r->nv30->base.pipe, r->transfer);
 106 }
 107
 108 static void
 109 nv30_render_set_primitive(struct vbuf_render *render, unsigned prim)
 110 {
 111    struct nv30_render *r = nv30_render(render);
 112
 113    r->prim = nv30_prim_gl(prim);
 114 }
 115
 116 static void
 117 nv30_render_draw_elements(struct vbuf_render *render,
 118                           const ushort *indices, uint count)
 119 {
 120    struct nv30_render *r = nv30_render(render);
 121    struct nv30_context *nv30 = r->nv30;
 122    struct nouveau_pushbuf *push = nv30->screen->base.pushbuf;
 123    unsigned i;
 124
 125    BEGIN_NV04(push, NV30_3D(VTXBUF(0)), r->vertex_info.num_attribs);
 126    for (i = 0; i < r->vertex_info.num_attribs; i++) {
 127       PUSH_RESRC(push, NV30_3D(VTXBUF(i)), BUFCTX_VTXTMP,
 128                        nv04_resource(r->buffer), r->offset + r->vtxptr[i],
 129                        NOUVEAU_BO_LOW | NOUVEAU_BO_RD, 0, 0);
 130    }
 131
 132    if (!nv30_state_validate(nv30, FALSE))
 133       return;
 134
 135    BEGIN_NV04(push, NV30_3D(VERTEX_BEGIN_END), 1);
 136    PUSH_DATA (push, r->prim);
 137
 138    if (count & 1) {
 139       BEGIN_NV04(push, NV30_3D(VB_ELEMENT_U32), 1);
 140       PUSH_DATA (push, *indices++);
 141    }
 142
 143    count >>= 1;
 144    while (count) {
 145       unsigned npush = MIN2(count, NV04_PFIFO_MAX_PACKET_LEN);
 146       count -= npush;
 147
 148       BEGIN_NI04(push, NV30_3D(VB_ELEMENT_U16), npush);
 149       while (npush--) {
 150          PUSH_DATA(push, (indices[1] << 16) | indices[0]);
 151          indices += 2;
 152       }
 153    }
 154
 155    BEGIN_NV04(push, NV30_3D(VERTEX_BEGIN_END), 1);
 156    PUSH_DATA (push, NV30_3D_VERTEX_BEGIN_END_STOP);
 157    PUSH_RESET(push, BUFCTX_VTXTMP);
 158 }
 159
 160 static void
 161 nv30_render_draw_arrays(struct vbuf_render *render, unsigned start, uint nr)
 162 {
 163    struct nv30_render *r = nv30_render(render);
 164    struct nv30_context *nv30 = r->nv30;
 165    struct nouveau_pushbuf *push = nv30->base.pushbuf;
 166    unsigned fn = nr >> 8, pn = nr & 0xff;
 167    unsigned ps = fn + (pn ? 1 : 0);
 168    unsigned i;
 169
 170    BEGIN_NV04(push, NV30_3D(VTXBUF(0)), r->vertex_info.num_attribs);
 171    for (i = 0; i < r->vertex_info.num_attribs; i++) {
 172       PUSH_RESRC(push, NV30_3D(VTXBUF(i)), BUFCTX_VTXTMP,
 173                        nv04_resource(r->buffer), r->offset + r->vtxptr[i],
 174                        NOUVEAU_BO_LOW | NOUVEAU_BO_RD, 0, 0);
 175    }
 176
 177    if (!nv30_state_validate(nv30, FALSE))
 178       return;
 179
 180    BEGIN_NV04(push, NV30_3D(VERTEX_BEGIN_END), 1);
 181    PUSH_DATA (push, r->prim);
 182
 183    BEGIN_NI04(push, NV30_3D(VB_VERTEX_BATCH), ps);
 184    while (fn--) {
 185       PUSH_DATA (push, 0xff000000 | start);
 186       start += 256;
 187    }
 188
 189    if (pn)
 190       PUSH_DATA (push, ((pn - 1) << 24) | start);
 191
 192    BEGIN_NV04(push, NV30_3D(VERTEX_BEGIN_END), 1);
 193    PUSH_DATA (push, NV30_3D_VERTEX_BEGIN_END_STOP);
 194    PUSH_RESET(push, BUFCTX_VTXTMP);
 195 }
 196
 197 static void
 198 nv30_render_release_vertices(struct vbuf_render *render)
 199 {
 200    struct nv30_render *r = nv30_render(render);
 201    r->offset += r->length;
 202 }
 203
 204 static const struct {
 205    unsigned emit;
 206    unsigned interp;
 207    unsigned vp30;
 208    unsigned vp40;
 209    unsigned ow40;
 210 } vroute [] = {
 211    [TGSI_SEMANTIC_POSITION] = { EMIT_4F, INTERP_PERSPECTIVE, 0, 0, 0x00000000 },
 212    [TGSI_SEMANTIC_COLOR   ] = { EMIT_4F, INTERP_LINEAR     , 3, 1, 0x00000001 },
 213    [TGSI_SEMANTIC_BCOLOR  ] = { EMIT_4F, INTERP_LINEAR     , 1, 3, 0x00000004 },
 214    [TGSI_SEMANTIC_FOG     ] = { EMIT_4F, INTERP_PERSPECTIVE, 5, 5, 0x00000010 },
 215    [TGSI_SEMANTIC_PSIZE   ] = { EMIT_1F_PSIZE, INTERP_POS  , 6, 6, 0x00000020 },
 216    [TGSI_SEMANTIC_GENERIC ] = { EMIT_4F, INTERP_PERSPECTIVE, 8, 7, 0x00004000 }
 217 };
 218
 219 static boolean
 220 vroute_add(struct nv30_render *r, uint attrib, uint sem, uint *idx)
 221 {
 222    struct pipe_screen *pscreen = &r->nv30->screen->base.base;
 223    struct nv30_fragprog *fp = r->nv30->fragprog.program;
 224    struct vertex_info *vinfo = &r->vertex_info;
 225    enum pipe_format format;
 226    uint emit = EMIT_OMIT;
 227    uint result = *idx;
 228
 229    if (sem == TGSI_SEMANTIC_GENERIC && result >= 8) {
 230       for (result = 0; result < 8; result++) {
 231          if (fp->texcoord[result] == *idx) {
 232             emit = vroute[sem].emit;
 233             break;
 234          }
 235       }
 236    } else {
 237       emit = vroute[sem].emit;
 238    }
 239
 240    if (emit == EMIT_OMIT)
 241       return FALSE;
 242
 243    draw_emit_vertex_attr(vinfo, emit, vroute[sem].interp, attrib);
 244    format = draw_translate_vinfo_format(emit);
 245
 246    r->vtxfmt[attrib] = nv30_vtxfmt(pscreen, format)->hw;
 247    r->vtxptr[attrib] = vinfo->size | NV30_3D_VTXBUF_DMA1;
 248    vinfo->size += draw_translate_vinfo_size(emit);
 249
 250    if (nv30_screen(pscreen)->eng3d->oclass < NV40_3D_CLASS) {
 251       r->vtxprog[attrib][0] = 0x001f38d8;
 252       r->vtxprog[attrib][1] = 0x0080001b | (attrib << 9);
 253       r->vtxprog[attrib][2] = 0x0836106c;
 254       r->vtxprog[attrib][3] = 0x2000f800 | (result + vroute[sem].vp30) << 2;
 255    } else {
 256       r->vtxprog[attrib][0] = 0x401f9c6c;
 257       r->vtxprog[attrib][1] = 0x0040000d | (attrib << 8);
 258       r->vtxprog[attrib][2] = 0x8106c083;
 259       r->vtxprog[attrib][3] = 0x6041ff80 | (result + vroute[sem].vp40) << 2;
 260    }
 261
 262    *idx = vroute[sem].ow40 << result;
 263    return TRUE;
 264 }
 265
 266 static boolean
 267 nv30_render_validate(struct nv30_context *nv30)
 268 {
 269    struct nv30_render *r = nv30_render(nv30->draw->render);
 270    struct nv30_rasterizer_stateobj *rast = nv30->rast;
 271    struct pipe_screen *pscreen = &nv30->screen->base.base;
 272    struct nouveau_pushbuf *push = nv30->screen->base.pushbuf;
 273    struct nouveau_object *eng3d = nv30->screen->eng3d;
 274    struct nv30_vertprog *vp = nv30->vertprog.program;
 275    struct vertex_info *vinfo = &r->vertex_info;
 276    unsigned vp_attribs = 0;
 277    unsigned vp_results = 0;
 278    unsigned attrib = 0;
 279    unsigned pntc;
 280    int i;
 281
 282    if (!r->vertprog) {
 283       struct nouveau_heap *heap = nv30_screen(pscreen)->vp_exec_heap;
 284       if (nouveau_heap_alloc(heap, 16, &r->vertprog, &r->vertprog)) {
 285          while (heap->next && heap->size < 16) {
 286             struct nouveau_heap **evict = heap->next->priv;
 287             nouveau_heap_free(evict);
 288          }
 289
 290          if (nouveau_heap_alloc(heap, 16, &r->vertprog, &r->vertprog))
 291             return FALSE;
 292       }
 293    }
 294
 295    vinfo->num_attribs = 0;
 296    vinfo->size = 0;
 297
 298    /* setup routing for all necessary vp outputs */
 299    for (i = 0; i < vp->info.num_outputs && attrib < 16; i++) {
 300       uint semantic = vp->info.output_semantic_name[i];
 301       uint index = vp->info.output_semantic_index[i];
 302       if (vroute_add(r, attrib, semantic, &index)) {
 303          vp_attribs |= (1 << attrib++);
 304          vp_results |= index;
 305       }
 306    }
 307
 308    /* setup routing for replaced point coords not written by vp */
 309    if (rast && rast->pipe.point_quad_rasterization)
 310       pntc = rast->pipe.sprite_coord_enable & 0x000002ff;
 311    else
 312       pntc = 0;
 313
 314    while (pntc && attrib < 16) {
 315       uint index = ffs(pntc) - 1; pntc &= ~(1 << index);
 316       if (vroute_add(r, attrib, TGSI_SEMANTIC_GENERIC, &index)) {
 317          vp_attribs |= (1 << attrib++);
 318          vp_results |= index;
 319       }
 320    }
 321
 322    /* modify vertex format for correct stride, and stub out unused ones */
 323    BEGIN_NV04(push, NV30_3D(VP_UPLOAD_FROM_ID), 1);
 324    PUSH_DATA (push, r->vertprog->start);
 325    r->vtxprog[attrib - 1][3] |= 1;
 326    for (i = 0; i < attrib; i++) {
 327       BEGIN_NV04(push, NV30_3D(VP_UPLOAD_INST(0)), 4);
 328       PUSH_DATAp(push, r->vtxprog[i], 4);
 329       r->vtxfmt[i] |= vinfo->size << 8;
 330    }
 331    for (; i < 16; i++)
 332       r->vtxfmt[i]  = NV30_3D_VTXFMT_TYPE_V32_FLOAT;
 333
 334    BEGIN_NV04(push, NV30_3D(VIEWPORT_TRANSLATE_X), 8);
 335    PUSH_DATAf(push, 0.0);
 336    PUSH_DATAf(push, 0.0);
 337    PUSH_DATAf(push, 0.0);
 338    PUSH_DATAf(push, 0.0);
 339    PUSH_DATAf(push, 1.0);
 340    PUSH_DATAf(push, 1.0);
 341    PUSH_DATAf(push, 1.0);
 342    PUSH_DATAf(push, 1.0);
 343    BEGIN_NV04(push, NV30_3D(DEPTH_RANGE_NEAR), 2);
 344    PUSH_DATAf(push, 0.0);
 345    PUSH_DATAf(push, 1.0);
 346
 347    BEGIN_NV04(push, NV30_3D(VTXFMT(0)), 16);
 348    PUSH_DATAp(push, r->vtxfmt, 16);
 349
 350    BEGIN_NV04(push, NV30_3D(VP_START_FROM_ID), 1);
 351    PUSH_DATA (push, r->vertprog->start);
 352    BEGIN_NV04(push, NV30_3D(ENGINE), 1);
 353    PUSH_DATA (push, 0x00000103);
 354    if (eng3d->oclass >= NV40_3D_CLASS) {
 355       BEGIN_NV04(push, NV40_3D(VP_ATTRIB_EN), 2);
 356       PUSH_DATA (push, vp_attribs);
 357       PUSH_DATA (push, vp_results);
 358    }
 359
 360    vinfo->size /= 4;
 361    return TRUE;
 362 }
 363
 364 void
 365 nv30_render_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
 366 {
 367    struct nv30_context *nv30 = nv30_context(pipe);
 368    struct draw_context *draw = nv30->draw;
 369    struct pipe_transfer *transfer[PIPE_MAX_ATTRIBS] = {NULL};
 370    struct pipe_transfer *transferi = NULL;
 371    int i;
 372
 373    nv30_render_validate(nv30);
 374
 375    if (nv30->draw_dirty & NV30_NEW_VIEWPORT)
 376       draw_set_viewport_state(draw, &nv30->viewport);
 377    if (nv30->draw_dirty & NV30_NEW_RASTERIZER)
 378       draw_set_rasterizer_state(draw, &nv30->rast->pipe, NULL);
 379    if (nv30->draw_dirty & NV30_NEW_CLIP)
 380       draw_set_clip_state(draw, &nv30->clip);
 381    if (nv30->draw_dirty & NV30_NEW_ARRAYS) {
 382       draw_set_vertex_buffers(draw, 0, nv30->num_vtxbufs, nv30->vtxbuf);
 383       draw_set_vertex_elements(draw, nv30->vertex->num_elements, nv30->vertex->pipe);
 384    }
 385    if (nv30->draw_dirty & NV30_NEW_FRAGPROG) {
 386       struct nv30_fragprog *fp = nv30->fragprog.program;
 387       if (!fp->draw)
 388          fp->draw = draw_create_fragment_shader(draw, &fp->pipe);
 389       draw_bind_fragment_shader(draw, fp->draw);
 390    }
 391    if (nv30->draw_dirty & NV30_NEW_VERTPROG) {
 392       struct nv30_vertprog *vp = nv30->vertprog.program;
 393       if (!vp->draw)
 394          vp->draw = draw_create_vertex_shader(draw, &vp->pipe);
 395       draw_bind_vertex_shader(draw, vp->draw);
 396    }
 397    if (nv30->draw_dirty & NV30_NEW_VERTCONST) {
 398       if (nv30->vertprog.constbuf) {
 399          void *map = nv04_resource(nv30->vertprog.constbuf)->data;
 400          draw_set_mapped_constant_buffer(draw, PIPE_SHADER_VERTEX, 0,
 401                                          map, nv30->vertprog.constbuf_nr);
 402       }
 403    }
 404
 405    for (i = 0; i < nv30->num_vtxbufs; i++) {
 406       const void *map = nv30->vtxbuf[i].user_buffer;
 407       if (!map) {
 408          if (!nv30->vtxbuf[i].buffer) {
 409             continue;
 410          }
 411          map = pipe_buffer_map(pipe, nv30->vtxbuf[i].buffer,
 412                                   PIPE_TRANSFER_UNSYNCHRONIZED |
 413                                   PIPE_TRANSFER_READ, &transfer[i]);
 414       }
 415       draw_set_mapped_vertex_buffer(draw, i, map);
 416    }
 417
 418    if (info->indexed) {
 419       const void *map = nv30->idxbuf.user_buffer;
 420       if (!map)
 421          pipe_buffer_map(pipe, nv30->idxbuf.buffer,
 422                                   PIPE_TRANSFER_UNSYNCHRONIZED |
 423                                   PIPE_TRANSFER_READ, &transferi);
 424       draw_set_indexes(draw,
 425                        (ubyte *) map + nv30->idxbuf.offset,
 426                        nv30->idxbuf.index_size);
 427    } else {
 428       draw_set_indexes(draw, NULL, 0);
 429    }
 430
 431    draw_vbo(draw, info);
 432    draw_flush(draw);
 433
 434    if (info->indexed && transferi)
 435       pipe_buffer_unmap(pipe, transferi);
 436    for (i = 0; i < nv30->num_vtxbufs; i++)
 437       if (transfer[i])
 438          pipe_buffer_unmap(pipe, transfer[i]);
 439
 440    nv30->draw_dirty = 0;
 441    nv30_state_release(nv30);
 442 }
 443
 444 static void
 445 nv30_render_destroy(struct vbuf_render *render)
 446 {
 447    FREE(render);
 448 }
 449
 450 static struct vbuf_render *
 451 nv30_render_create(struct nv30_context *nv30)
 452 {
 453    struct nv30_render *r = CALLOC_STRUCT(nv30_render);
 454    if (!r)
 455       return NULL;
 456
 457    r->nv30 = nv30;
 458    r->offset = 1 * 1024 * 1024;
 459
 460    r->base.max_indices = 16 * 1024;
 461    r->base.max_vertex_buffer_bytes = r->offset;
 462
 463    r->base.get_vertex_info = nv30_render_get_vertex_info;
 464    r->base.allocate_vertices = nv30_render_allocate_vertices;
 465    r->base.map_vertices = nv30_render_map_vertices;
 466    r->base.unmap_vertices = nv30_render_unmap_vertices;
 467    r->base.set_primitive = nv30_render_set_primitive;
 468    r->base.draw_elements = nv30_render_draw_elements;
 469    r->base.draw_arrays = nv30_render_draw_arrays;
 470    r->base.release_vertices = nv30_render_release_vertices;
 471    r->base.destroy = nv30_render_destroy;
 472    return &r->base;
 473 }
 474
 475 void
 476 nv30_draw_init(struct pipe_context *pipe)
 477 {
 478    struct nv30_context *nv30 = nv30_context(pipe);
 479    struct vbuf_render *render;
 480    struct draw_context *draw;
 481    struct draw_stage *stage;
 482
 483    draw = draw_create(pipe);
 484    if (!draw)
 485       return;
 486
 487    render = nv30_render_create(nv30);
 488    if (!render) {
 489       draw_destroy(draw);
 490       return;
 491    }
 492
 493    stage = draw_vbuf_stage(draw, render);
 494    if (!stage) {
 495       render->destroy(render);
 496       draw_destroy(draw);
 497       return;
 498    }
 499
 500    draw_set_render(draw, render);
 501    draw_set_rasterize_stage(draw, stage);
 502    draw_wide_line_threshold(draw, 10000000.f);
 503    draw_wide_point_threshold(draw, 10000000.f);
 504    draw_wide_point_sprites(draw, TRUE);
 505    nv30->draw = draw;
 506 }