src/gallium/drivers/nv50/nv50_vbo.c

   1 /*
   2  * Copyright 2008 Ben Skeggs
   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
  23 #include "pipe/p_context.h"
  24 #include "pipe/p_state.h"
  25
  26 #include "nv50_context.h"
  27
  28 static INLINE unsigned
  29 nv50_prim(unsigned mode)
  30 {
  31         switch (mode) {
  32         case PIPE_PRIM_POINTS: return NV50TCL_VERTEX_BEGIN_POINTS;
  33         case PIPE_PRIM_LINES: return NV50TCL_VERTEX_BEGIN_LINES;
  34         case PIPE_PRIM_LINE_LOOP: return NV50TCL_VERTEX_BEGIN_LINE_LOOP;
  35         case PIPE_PRIM_LINE_STRIP: return NV50TCL_VERTEX_BEGIN_LINE_STRIP;
  36         case PIPE_PRIM_TRIANGLES: return NV50TCL_VERTEX_BEGIN_TRIANGLES;
  37         case PIPE_PRIM_TRIANGLE_STRIP:
  38                 return NV50TCL_VERTEX_BEGIN_TRIANGLE_STRIP;
  39         case PIPE_PRIM_TRIANGLE_FAN: return NV50TCL_VERTEX_BEGIN_TRIANGLE_FAN;
  40         case PIPE_PRIM_QUADS: return NV50TCL_VERTEX_BEGIN_QUADS;
  41         case PIPE_PRIM_QUAD_STRIP: return NV50TCL_VERTEX_BEGIN_QUAD_STRIP;
  42         case PIPE_PRIM_POLYGON: return NV50TCL_VERTEX_BEGIN_POLYGON;
  43         default:
  44                 break;
  45         }
  46
  47         NOUVEAU_ERR("invalid primitive type %d\n", mode);
  48         return NV50TCL_VERTEX_BEGIN_POINTS;
  49 }
  50
  51 boolean
  52 nv50_draw_arrays(struct pipe_context *pipe, unsigned mode, unsigned start,
  53                  unsigned count)
  54 {
  55         struct nv50_context *nv50 = nv50_context(pipe);
  56
  57         nv50_state_validate(nv50);
  58
  59         BEGIN_RING(tesla, 0x142c, 1);
  60         OUT_RING  (0);
  61         BEGIN_RING(tesla, 0x142c, 1);
  62         OUT_RING  (0);
  63
  64         BEGIN_RING(tesla, NV50TCL_VERTEX_BEGIN, 1);
  65         OUT_RING  (nv50_prim(mode));
  66         BEGIN_RING(tesla, NV50TCL_VERTEX_BUFFER_FIRST, 2);
  67         OUT_RING  (start);
  68         OUT_RING  (count);
  69         BEGIN_RING(tesla, NV50TCL_VERTEX_END, 1);
  70         OUT_RING  (0);
  71
  72         pipe->flush(pipe, 0, NULL);
  73         return TRUE;
  74 }
  75
  76 static INLINE void
  77 nv50_draw_elements_inline_u08(struct nv50_context *nv50, uint8_t *map,
  78                               unsigned start, unsigned count)
  79 {
  80         map += start;
  81
  82         if (count & 1) {
  83                 BEGIN_RING(tesla, 0x15e8, 1);
  84                 OUT_RING  (map[0]);
  85                 map++;
  86                 count--;
  87         }
  88
  89         while (count) {
  90                 unsigned nr = count > 2046 ? 2046 : count;
  91                 int i;
  92
  93                 BEGIN_RING(tesla, 0x400015f0, nr >> 1);
  94                 for (i = 0; i < nr; i += 2)
  95                         OUT_RING  ((map[1] << 16) | map[0]);
  96
  97                 count -= nr;
  98                 map += nr;
  99         }
 100 }
 101
 102 static INLINE void
 103 nv50_draw_elements_inline_u16(struct nv50_context *nv50, uint16_t *map,
 104                               unsigned start, unsigned count)
 105 {
 106         map += start;
 107
 108         if (count & 1) {
 109                 BEGIN_RING(tesla, 0x15e8, 1);
 110                 OUT_RING  (map[0]);
 111                 map++;
 112                 count--;
 113         }
 114
 115         while (count) {
 116                 unsigned nr = count > 2046 ? 2046 : count;
 117                 int i;
 118
 119                 BEGIN_RING(tesla, 0x400015f0, nr >> 1);
 120                 for (i = 0; i < nr; i += 2)
 121                         OUT_RING  ((map[1] << 16) | map[0]);
 122
 123                 count -= nr;
 124                 map += nr;
 125         }
 126 }
 127
 128 static INLINE void
 129 nv50_draw_elements_inline_u32(struct nv50_context *nv50, uint8_t *map,
 130                               unsigned start, unsigned count)
 131 {
 132         map += start;
 133
 134         while (count) {
 135                 unsigned nr = count > 2047 ? 2047 : count;
 136
 137                 BEGIN_RING(tesla, 0x400015e8, nr);
 138                 OUT_RINGp (map, nr);
 139
 140                 count -= nr;
 141                 map += nr;
 142         }
 143 }
 144
 145 boolean
 146 nv50_draw_elements(struct pipe_context *pipe,
 147                    struct pipe_buffer *indexBuffer, unsigned indexSize,
 148                    unsigned mode, unsigned start, unsigned count)
 149 {
 150         struct nv50_context *nv50 = nv50_context(pipe);
 151         struct pipe_winsys *ws = pipe->winsys;
 152         void *map = ws->buffer_map(ws, indexBuffer, PIPE_BUFFER_USAGE_CPU_READ);
 153
 154         nv50_state_validate(nv50);
 155
 156         BEGIN_RING(tesla, 0x142c, 1);
 157         OUT_RING  (0);
 158         BEGIN_RING(tesla, 0x142c, 1);
 159         OUT_RING  (0);
 160
 161         BEGIN_RING(tesla, NV50TCL_VERTEX_BEGIN, 1);
 162         OUT_RING  (nv50_prim(mode));
 163         switch (indexSize) {
 164         case 1:
 165                 nv50_draw_elements_inline_u08(nv50, map, start, count);
 166                 break;
 167         case 2:
 168                 nv50_draw_elements_inline_u16(nv50, map, start, count);
 169                 break;
 170         case 4:
 171                 nv50_draw_elements_inline_u32(nv50, map, start, count);
 172                 break;
 173         default:
 174                 assert(0);
 175         }
 176         BEGIN_RING(tesla, NV50TCL_VERTEX_END, 1);
 177         OUT_RING  (0);
 178
 179         pipe->flush(pipe, 0, NULL);
 180         return TRUE;
 181 }
 182
 183 void
 184 nv50_vbo_validate(struct nv50_context *nv50)
 185 {
 186         struct nouveau_grobj *tesla = nv50->screen->tesla;
 187         struct nouveau_stateobj *vtxbuf, *vtxfmt;
 188         int i, vpi = 0;
 189
 190         vtxbuf = so_new(nv50->vtxelt_nr * 4, nv50->vtxelt_nr * 2);
 191         vtxfmt = so_new(nv50->vtxelt_nr + 1, 0);
 192         so_method(vtxfmt, tesla, 0x1ac0, nv50->vtxelt_nr);
 193
 194         for (i = 0; i < nv50->vtxelt_nr; i++) {
 195                 struct pipe_vertex_element *ve = &nv50->vtxelt[i];
 196                 struct pipe_vertex_buffer *vb =
 197                         &nv50->vtxbuf[ve->vertex_buffer_index];
 198
 199                 switch (ve->src_format) {
 200                 case PIPE_FORMAT_R32G32B32A32_FLOAT:
 201                         so_data(vtxfmt, 0x7e080000 | i);
 202                         break;
 203                 case PIPE_FORMAT_R32G32B32_FLOAT:
 204                         so_data(vtxfmt, 0x7e100000 | i);
 205                         break;
 206                 case PIPE_FORMAT_R32G32_FLOAT:
 207                         so_data(vtxfmt, 0x7e200000 | i);
 208                         break;
 209                 case PIPE_FORMAT_R32_FLOAT:
 210                         so_data(vtxfmt, 0x7e900000 | i);
 211                         break;
 212                 case PIPE_FORMAT_R8G8B8A8_UNORM:
 213                         so_data(vtxfmt, 0x24500000 | i);
 214                         break;
 215                 default:
 216                 {
 217                         NOUVEAU_ERR("invalid vbo format %s\n",
 218                                     pf_name(ve->src_format));
 219                         assert(0);
 220                         return;
 221                 }
 222                 }
 223
 224                 so_method(vtxbuf, tesla, 0x900 + (i * 16), 3);
 225                 so_data  (vtxbuf, 0x20000000 | vb->pitch);
 226                 so_reloc (vtxbuf, vb->buffer, vb->buffer_offset +
 227                           ve->src_offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_GART |
 228                           NOUVEAU_BO_RD | NOUVEAU_BO_HIGH, 0, 0);
 229                 so_reloc (vtxbuf, vb->buffer, vb->buffer_offset +
 230                           ve->src_offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_GART |
 231                           NOUVEAU_BO_RD | NOUVEAU_BO_LOW, 0, 0);
 232         }
 233
 234         so_ref (vtxfmt, &nv50->state.vtxfmt);
 235         so_ref (vtxbuf, &nv50->state.vtxbuf);
 236 }
 237