workbench/libs/mesa/src/gallium/drivers/nvc0/nvc0_push.c

   1
   2 #include "pipe/p_context.h"
   3 #include "pipe/p_state.h"
   4 #include "util/u_inlines.h"
   5 #include "util/u_format.h"
   6 #include "translate/translate.h"
   7
   8 #include "nvc0_context.h"
   9 #include "nvc0_resource.h"
  10
  11 #include "nvc0_3d.xml.h"
  12
  13 struct push_context {
  14    struct nouveau_channel *chan;
  15
  16    void *idxbuf;
  17
  18    uint32_t vertex_words;
  19    uint32_t packet_vertex_limit;
  20
  21    struct translate *translate;
  22
  23    boolean primitive_restart;
  24    uint32_t prim;
  25    uint32_t restart_index;
  26    uint32_t instance_id;
  27
  28    struct {
  29       int buffer;
  30       float value;
  31       uint8_t *data;
  32       unsigned offset;
  33       unsigned stride;
  34    } edgeflag;
  35 };
  36
  37 static void
  38 init_push_context(struct nvc0_context *nvc0, struct push_context *ctx)
  39 {
  40    struct pipe_vertex_element *ve;
  41
  42    ctx->chan = nvc0->screen->base.channel;
  43    ctx->translate = nvc0->vertex->translate;
  44
  45    ctx->edgeflag.value = 0.5f;
  46
  47    if (NVC0_USING_EDGEFLAG(nvc0)) {
  48       ve = &nvc0->vertex->element[nvc0->vertprog->vp.edgeflag].pipe;
  49
  50       ctx->edgeflag.buffer = ve->vertex_buffer_index;
  51       ctx->edgeflag.offset = ve->src_offset;
  52
  53       ctx->packet_vertex_limit = 1;
  54    } else {
  55       ctx->edgeflag.buffer = -1;
  56       ctx->edgeflag.offset = 0;
  57       ctx->edgeflag.stride = 0;
  58       ctx->edgeflag.data = NULL;
  59
  60       ctx->packet_vertex_limit = nvc0->vertex->vtx_per_packet_max;
  61    }
  62
  63    ctx->vertex_words = nvc0->vertex->vtx_size;
  64 }
  65
  66 static INLINE void
  67 set_edgeflag(struct push_context *ctx, unsigned vtx_id)
  68 {
  69    float f = *(float *)(ctx->edgeflag.data + vtx_id * ctx->edgeflag.stride);
  70
  71    if (ctx->edgeflag.value != f) {
  72       ctx->edgeflag.value = f;
  73       IMMED_RING(ctx->chan, RING_3D(EDGEFLAG_ENABLE), f ? 1 : 0);
  74    }
  75 }
  76
  77 static INLINE unsigned
  78 prim_restart_search_i08(uint8_t *elts, unsigned push, uint8_t index)
  79 {
  80    unsigned i;
  81    for (i = 0; i < push; ++i)
  82       if (elts[i] == index)
  83          break;
  84    return i;
  85 }
  86
  87 static INLINE unsigned
  88 prim_restart_search_i16(uint16_t *elts, unsigned push, uint16_t index)
  89 {
  90    unsigned i;
  91    for (i = 0; i < push; ++i)
  92       if (elts[i] == index)
  93          break;
  94    return i;
  95 }
  96
  97 static INLINE unsigned
  98 prim_restart_search_i32(uint32_t *elts, unsigned push, uint32_t index)
  99 {
 100    unsigned i;
 101    for (i = 0; i < push; ++i)
 102       if (elts[i] == index)
 103          break;
 104    return i;
 105 }
 106
 107 static void
 108 emit_vertices_i08(struct push_context *ctx, unsigned start, unsigned count)
 109 {
 110    uint8_t *restrict elts = (uint8_t *)ctx->idxbuf + start;
 111
 112    while (count) {
 113       unsigned push = MIN2(count, ctx->packet_vertex_limit);
 114       unsigned size, nr;
 115
 116       nr = push;
 117       if (ctx->primitive_restart)
 118          nr = prim_restart_search_i08(elts, push, ctx->restart_index);
 119
 120       if (unlikely(ctx->edgeflag.buffer >= 0) && nr)
 121          set_edgeflag(ctx, elts[0]);
 122
 123       size = ctx->vertex_words * nr;
 124
 125       BEGIN_RING_NI(ctx->chan, RING_3D(VERTEX_DATA), size);
 126
 127       ctx->translate->run_elts8(ctx->translate, elts, nr, ctx->instance_id,
 128                                 ctx->chan->cur);
 129
 130       ctx->chan->cur += size;
 131       count -= nr;
 132       elts += nr;
 133
 134       if (nr != push) {
 135          count--;
 136          elts++;
 137          BEGIN_RING(ctx->chan, RING_3D(VERTEX_END_GL), 2);
 138          OUT_RING  (ctx->chan, 0);
 139          OUT_RING  (ctx->chan, NVC0_3D_VERTEX_BEGIN_GL_INSTANCE_CONT |
 140                     (ctx->prim & ~NVC0_3D_VERTEX_BEGIN_GL_INSTANCE_NEXT));
 141       }
 142    }
 143 }
 144
 145 static void
 146 emit_vertices_i16(struct push_context *ctx, unsigned start, unsigned count)
 147 {
 148    uint16_t *restrict elts = (uint16_t *)ctx->idxbuf + start;
 149
 150    while (count) {
 151       unsigned push = MIN2(count, ctx->packet_vertex_limit);
 152       unsigned size, nr;
 153
 154       nr = push;
 155       if (ctx->primitive_restart)
 156          nr = prim_restart_search_i16(elts, push, ctx->restart_index);
 157
 158       if (unlikely(ctx->edgeflag.buffer >= 0) && nr)
 159          set_edgeflag(ctx, elts[0]);
 160
 161       size = ctx->vertex_words * nr;
 162
 163       BEGIN_RING_NI(ctx->chan, RING_3D(VERTEX_DATA), size);
 164
 165       ctx->translate->run_elts16(ctx->translate, elts, nr, ctx->instance_id,
 166                                  ctx->chan->cur);
 167
 168       ctx->chan->cur += size;
 169       count -= nr;
 170       elts += nr;
 171
 172       if (nr != push) {
 173          count--;
 174          elts++;
 175          BEGIN_RING(ctx->chan, RING_3D(VERTEX_END_GL), 2);
 176          OUT_RING  (ctx->chan, 0);
 177          OUT_RING  (ctx->chan, NVC0_3D_VERTEX_BEGIN_GL_INSTANCE_CONT |
 178                     (ctx->prim & ~NVC0_3D_VERTEX_BEGIN_GL_INSTANCE_NEXT));
 179       }
 180    }
 181 }
 182
 183 static void
 184 emit_vertices_i32(struct push_context *ctx, unsigned start, unsigned count)
 185 {
 186    uint32_t *restrict elts = (uint32_t *)ctx->idxbuf + start;
 187
 188    while (count) {
 189       unsigned push = MIN2(count, ctx->packet_vertex_limit);
 190       unsigned size, nr;
 191
 192       nr = push;
 193       if (ctx->primitive_restart)
 194          nr = prim_restart_search_i32(elts, push, ctx->restart_index);
 195
 196       if (unlikely(ctx->edgeflag.buffer >= 0) && nr)
 197          set_edgeflag(ctx, elts[0]);
 198
 199       size = ctx->vertex_words * nr;
 200
 201       BEGIN_RING_NI(ctx->chan, RING_3D(VERTEX_DATA), size);
 202
 203       ctx->translate->run_elts(ctx->translate, elts, nr, ctx->instance_id,
 204                                ctx->chan->cur);
 205
 206       ctx->chan->cur += size;
 207       count -= nr;
 208       elts += nr;
 209
 210       if (nr != push) {
 211          count--;
 212          elts++;
 213          BEGIN_RING(ctx->chan, RING_3D(VERTEX_END_GL), 2);
 214          OUT_RING  (ctx->chan, 0);
 215          OUT_RING  (ctx->chan, NVC0_3D_VERTEX_BEGIN_GL_INSTANCE_CONT |
 216                     (ctx->prim & ~NVC0_3D_VERTEX_BEGIN_GL_INSTANCE_NEXT));
 217       }
 218    }
 219 }
 220
 221 static void
 222 emit_vertices_seq(struct push_context *ctx, unsigned start, unsigned count)
 223 {
 224    while (count) {
 225       unsigned push = MIN2(count, ctx->packet_vertex_limit);
 226       unsigned size = ctx->vertex_words * push;
 227
 228       if (unlikely(ctx->edgeflag.buffer >= 0))
 229          set_edgeflag(ctx, start);
 230
 231       BEGIN_RING_NI(ctx->chan, RING_3D(VERTEX_DATA), size);
 232
 233       ctx->translate->run(ctx->translate, start, push, ctx->instance_id,
 234                           ctx->chan->cur);
 235       ctx->chan->cur += size;
 236       count -= push;
 237       start += push;
 238    }
 239 }
 240
 241
 242 #define NVC0_PRIM_GL_CASE(n) \
 243    case PIPE_PRIM_##n: return NVC0_3D_VERTEX_BEGIN_GL_PRIMITIVE_##n
 244
 245 static INLINE unsigned
 246 nvc0_prim_gl(unsigned prim)
 247 {
 248    switch (prim) {
 249    NVC0_PRIM_GL_CASE(POINTS);
 250    NVC0_PRIM_GL_CASE(LINES);
 251    NVC0_PRIM_GL_CASE(LINE_LOOP);
 252    NVC0_PRIM_GL_CASE(LINE_STRIP);
 253    NVC0_PRIM_GL_CASE(TRIANGLES);
 254    NVC0_PRIM_GL_CASE(TRIANGLE_STRIP);
 255    NVC0_PRIM_GL_CASE(TRIANGLE_FAN);
 256    NVC0_PRIM_GL_CASE(QUADS);
 257    NVC0_PRIM_GL_CASE(QUAD_STRIP);
 258    NVC0_PRIM_GL_CASE(POLYGON);
 259    NVC0_PRIM_GL_CASE(LINES_ADJACENCY);
 260    NVC0_PRIM_GL_CASE(LINE_STRIP_ADJACENCY);
 261    NVC0_PRIM_GL_CASE(TRIANGLES_ADJACENCY);
 262    NVC0_PRIM_GL_CASE(TRIANGLE_STRIP_ADJACENCY);
 263    /*
 264    NVC0_PRIM_GL_CASE(PATCHES); */
 265    default:
 266       return NVC0_3D_VERTEX_BEGIN_GL_PRIMITIVE_POINTS;
 267       break;
 268    }
 269 }
 270
 271 void
 272 nvc0_push_vbo(struct nvc0_context *nvc0, const struct pipe_draw_info *info)
 273 {
 274    struct push_context ctx;
 275    unsigned i, index_size;
 276    unsigned inst = info->instance_count;
 277    boolean apply_bias = info->indexed && info->index_bias;
 278
 279    init_push_context(nvc0, &ctx);
 280
 281    for (i = 0; i < nvc0->num_vtxbufs; ++i) {
 282       uint8_t *data;
 283       struct pipe_vertex_buffer *vb = &nvc0->vtxbuf[i];
 284       struct nv04_resource *res = nv04_resource(vb->buffer);
 285
 286       data = nouveau_resource_map_offset(&nvc0->base, res,
 287                                          vb->buffer_offset, NOUVEAU_BO_RD);
 288
 289       if (apply_bias && likely(!(nvc0->vertex->instance_bufs & (1 << i))))
 290          data += info->index_bias * vb->stride;
 291
 292       ctx.translate->set_buffer(ctx.translate, i, data, vb->stride, ~0);
 293
 294       if (unlikely(i == ctx.edgeflag.buffer)) {
 295          ctx.edgeflag.data = data + ctx.edgeflag.offset;
 296          ctx.edgeflag.stride = vb->stride;
 297       }
 298    }
 299
 300    if (info->indexed) {
 301       ctx.idxbuf =
 302          nouveau_resource_map_offset(&nvc0->base,
 303                                      nv04_resource(nvc0->idxbuf.buffer),
 304                                      nvc0->idxbuf.offset, NOUVEAU_BO_RD);
 305       if (!ctx.idxbuf)
 306          return;
 307       index_size = nvc0->idxbuf.index_size;
 308       ctx.primitive_restart = info->primitive_restart;
 309       ctx.restart_index = info->restart_index;
 310    } else {
 311       ctx.idxbuf = NULL;
 312       index_size = 0;
 313       ctx.primitive_restart = FALSE;
 314       ctx.restart_index = 0;
 315    }
 316
 317    ctx.instance_id = info->start_instance;
 318    ctx.prim = nvc0_prim_gl(info->mode);
 319
 320    while (inst--) {
 321       BEGIN_RING(ctx.chan, RING_3D(VERTEX_BEGIN_GL), 1);
 322       OUT_RING  (ctx.chan, ctx.prim);
 323       switch (index_size) {
 324       case 0:
 325          emit_vertices_seq(&ctx, info->start, info->count);
 326          break;
 327       case 1:
 328          emit_vertices_i08(&ctx, info->start, info->count);
 329          break;
 330       case 2:
 331          emit_vertices_i16(&ctx, info->start, info->count);
 332          break;
 333       case 4:
 334          emit_vertices_i32(&ctx, info->start, info->count);
 335          break;
 336       default:
 337          assert(0);
 338          break;
 339       }
 340       IMMED_RING(ctx.chan, RING_3D(VERTEX_END_GL), 0);
 341
 342       ctx.instance_id++;
 343       ctx.prim |= NVC0_3D_VERTEX_BEGIN_GL_INSTANCE_NEXT;
 344    }
 345
 346    if (unlikely(ctx.edgeflag.value == 0.0f))
 347       IMMED_RING(ctx.chan, RING_3D(EDGEFLAG_ENABLE), 1);
 348
 349    if (info->indexed)
 350       nouveau_resource_unmap(nv04_resource(nvc0->idxbuf.buffer));
 351
 352    for (i = 0; i < nvc0->num_vtxbufs; ++i)
 353       nouveau_resource_unmap(nv04_resource(nvc0->vtxbuf[i].buffer));
 354 }