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    float edgeflag;
  19    int edgeflag_attr;
  20
  21    uint32_t vertex_words;
  22    uint32_t packet_vertex_limit;
  23
  24    struct translate *translate;
  25
  26    boolean primitive_restart;
  27    uint32_t prim;
  28    uint32_t restart_index;
  29 };
  30
  31 static INLINE unsigned
  32 prim_restart_search_i08(uint8_t *elts, unsigned push, uint8_t index)
  33 {
  34    unsigned i;
  35    for (i = 0; i < push; ++i)
  36       if (elts[i] == index)
  37          break;
  38    return i;
  39 }
  40
  41 static INLINE unsigned
  42 prim_restart_search_i16(uint16_t *elts, unsigned push, uint16_t index)
  43 {
  44    unsigned i;
  45    for (i = 0; i < push; ++i)
  46       if (elts[i] == index)
  47          break;
  48    return i;
  49 }
  50
  51 static INLINE unsigned
  52 prim_restart_search_i32(uint32_t *elts, unsigned push, uint32_t index)
  53 {
  54    unsigned i;
  55    for (i = 0; i < push; ++i)
  56       if (elts[i] == index)
  57          break;
  58    return i;
  59 }
  60
  61 static void
  62 emit_vertices_i08(struct push_context *ctx, unsigned start, unsigned count)
  63 {
  64    uint8_t *elts = (uint8_t *)ctx->idxbuf + start;
  65
  66    while (count) {
  67       unsigned push = MIN2(count, ctx->packet_vertex_limit);
  68       unsigned size, nr;
  69
  70       nr = push;
  71       if (ctx->primitive_restart)
  72          nr = prim_restart_search_i08(elts, push, ctx->restart_index);
  73
  74       size = ctx->vertex_words * nr;
  75
  76       BEGIN_RING_NI(ctx->chan, RING_3D(VERTEX_DATA), size);
  77
  78       ctx->translate->run_elts8(ctx->translate, elts, push, 0, ctx->chan->cur);
  79
  80       ctx->chan->cur += size;
  81       count -= push;
  82       elts += push;
  83
  84       if (nr != push) {
  85          BEGIN_RING(ctx->chan, RING_3D(VERTEX_END_GL), 2);
  86          OUT_RING  (ctx->chan, 0);
  87          OUT_RING  (ctx->chan, ctx->prim);
  88       }
  89    }
  90 }
  91
  92 static void
  93 emit_vertices_i16(struct push_context *ctx, unsigned start, unsigned count)
  94 {
  95    uint16_t *elts = (uint16_t *)ctx->idxbuf + start;
  96
  97    while (count) {
  98       unsigned push = MIN2(count, ctx->packet_vertex_limit);
  99       unsigned size, nr;
 100
 101       nr = push;
 102       if (ctx->primitive_restart)
 103          nr = prim_restart_search_i16(elts, push, ctx->restart_index);
 104
 105       size = ctx->vertex_words * nr;
 106
 107       BEGIN_RING_NI(ctx->chan, RING_3D(VERTEX_DATA), size);
 108
 109       ctx->translate->run_elts16(ctx->translate, elts, push, 0, ctx->chan->cur);
 110
 111       ctx->chan->cur += size;
 112       count -= push;
 113       elts += push;
 114
 115       if (nr != push) {
 116          BEGIN_RING(ctx->chan, RING_3D(VERTEX_END_GL), 2);
 117          OUT_RING  (ctx->chan, 0);
 118          OUT_RING  (ctx->chan, ctx->prim);
 119       }
 120    }
 121 }
 122
 123 static void
 124 emit_vertices_i32(struct push_context *ctx, unsigned start, unsigned count)
 125 {
 126    uint32_t *elts = (uint32_t *)ctx->idxbuf + start;
 127
 128    while (count) {
 129       unsigned push = MIN2(count, ctx->packet_vertex_limit);
 130       unsigned size, nr;
 131
 132       nr = push;
 133       if (ctx->primitive_restart)
 134          nr = prim_restart_search_i32(elts, push, ctx->restart_index);
 135
 136       size = ctx->vertex_words * nr;
 137
 138       BEGIN_RING_NI(ctx->chan, RING_3D(VERTEX_DATA), size);
 139
 140       ctx->translate->run_elts(ctx->translate, elts, push, 0, ctx->chan->cur);
 141
 142       ctx->chan->cur += size;
 143       count -= push;
 144       elts += push;
 145
 146       if (nr != push) {
 147          BEGIN_RING(ctx->chan, RING_3D(VERTEX_END_GL), 2);
 148          OUT_RING  (ctx->chan, 0);
 149          OUT_RING  (ctx->chan, ctx->prim);
 150       }
 151    }
 152 }
 153
 154 static void
 155 emit_vertices_seq(struct push_context *ctx, unsigned start, unsigned count)
 156 {
 157    while (count) {
 158       unsigned push = MIN2(count, ctx->packet_vertex_limit);
 159       unsigned size = ctx->vertex_words * push;
 160
 161       BEGIN_RING_NI(ctx->chan, RING_3D(VERTEX_DATA), size);
 162
 163       ctx->translate->run(ctx->translate, start, push, 0, ctx->chan->cur);
 164       ctx->chan->cur += size;
 165       count -= push;
 166       start += push;
 167    }
 168 }
 169
 170
 171 #define NVC0_PRIM_GL_CASE(n) \
 172    case PIPE_PRIM_##n: return NVC0_3D_VERTEX_BEGIN_GL_PRIMITIVE_##n
 173
 174 static INLINE unsigned
 175 nvc0_prim_gl(unsigned prim)
 176 {
 177    switch (prim) {
 178    NVC0_PRIM_GL_CASE(POINTS);
 179    NVC0_PRIM_GL_CASE(LINES);
 180    NVC0_PRIM_GL_CASE(LINE_LOOP);
 181    NVC0_PRIM_GL_CASE(LINE_STRIP);
 182    NVC0_PRIM_GL_CASE(TRIANGLES);
 183    NVC0_PRIM_GL_CASE(TRIANGLE_STRIP);
 184    NVC0_PRIM_GL_CASE(TRIANGLE_FAN);
 185    NVC0_PRIM_GL_CASE(QUADS);
 186    NVC0_PRIM_GL_CASE(QUAD_STRIP);
 187    NVC0_PRIM_GL_CASE(POLYGON);
 188    NVC0_PRIM_GL_CASE(LINES_ADJACENCY);
 189    NVC0_PRIM_GL_CASE(LINE_STRIP_ADJACENCY);
 190    NVC0_PRIM_GL_CASE(TRIANGLES_ADJACENCY);
 191    NVC0_PRIM_GL_CASE(TRIANGLE_STRIP_ADJACENCY);
 192    /*
 193    NVC0_PRIM_GL_CASE(PATCHES); */
 194    default:
 195       return NVC0_3D_VERTEX_BEGIN_GL_PRIMITIVE_POINTS;
 196       break;
 197    }
 198 }
 199
 200 void
 201 nvc0_push_vbo(struct nvc0_context *nvc0, const struct pipe_draw_info *info)
 202 {
 203    struct push_context ctx;
 204    unsigned i, index_size;
 205    unsigned inst = info->instance_count;
 206
 207    ctx.chan = nvc0->screen->base.channel;
 208    ctx.translate = nvc0->vertex->translate;
 209    ctx.packet_vertex_limit = nvc0->vertex->vtx_per_packet_max;
 210    ctx.vertex_words = nvc0->vertex->vtx_size;
 211
 212    for (i = 0; i < nvc0->num_vtxbufs; ++i) {
 213       uint8_t *data;
 214       struct pipe_vertex_buffer *vb = &nvc0->vtxbuf[i];
 215       struct nvc0_resource *res = nvc0_resource(vb->buffer);
 216
 217       data = nvc0_resource_map_offset(nvc0, res,
 218                                       vb->buffer_offset, NOUVEAU_BO_RD);
 219       if (info->indexed)
 220          data += info->index_bias * vb->stride;
 221
 222       ctx.translate->set_buffer(ctx.translate, i, data, vb->stride, ~0);
 223    }
 224
 225    if (info->indexed) {
 226       ctx.idxbuf = nvc0_resource_map_offset(nvc0,
 227                                             nvc0_resource(nvc0->idxbuf.buffer),
 228                                             nvc0->idxbuf.offset, NOUVEAU_BO_RD);
 229       if (!ctx.idxbuf)
 230          return;
 231       index_size = nvc0->idxbuf.index_size;
 232       ctx.primitive_restart = info->primitive_restart;
 233       ctx.restart_index = info->restart_index;
 234    } else {
 235       ctx.idxbuf = NULL;
 236       index_size = 0;
 237       ctx.primitive_restart = FALSE;
 238       ctx.restart_index = 0;
 239    }
 240
 241    ctx.prim = nvc0_prim_gl(info->mode);
 242
 243    while (inst--) {
 244       BEGIN_RING(ctx.chan, RING_3D(VERTEX_BEGIN_GL), 1);
 245       OUT_RING  (ctx.chan, ctx.prim);
 246       switch (index_size) {
 247       case 0:
 248          emit_vertices_seq(&ctx, info->start, info->count);
 249          break;
 250       case 1:
 251          emit_vertices_i08(&ctx, info->start, info->count);
 252          break;
 253       case 2:
 254          emit_vertices_i16(&ctx, info->start, info->count);
 255          break;
 256       case 4:
 257          emit_vertices_i32(&ctx, info->start, info->count);
 258          break;
 259       default:
 260          assert(0);
 261          break;
 262       }
 263       IMMED_RING(ctx.chan, RING_3D(VERTEX_END_GL), 0);
 264
 265       ctx.prim |= NVC0_3D_VERTEX_BEGIN_GL_INSTANCE_NEXT;
 266    }
 267
 268    if (info->indexed)
 269       nvc0_resource_unmap(nvc0_resource(nvc0->idxbuf.buffer));
 270
 271    for (i = 0; i < nvc0->num_vtxbufs; ++i)
 272       nvc0_resource_unmap(nvc0_resource(nvc0->vtxbuf[i].buffer));
 273 }