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 #include "pipe/p_util.h"
  26
  27 #include "nv50_context.h"
  28
  29 static INLINE unsigned
  30 nv50_prim(unsigned mode)
  31 {
  32         switch (mode) {
  33         case PIPE_PRIM_POINTS: return NV50TCL_VERTEX_BEGIN_POINTS;
  34         case PIPE_PRIM_LINES: return NV50TCL_VERTEX_BEGIN_LINES;
  35         case PIPE_PRIM_LINE_LOOP: return NV50TCL_VERTEX_BEGIN_LINE_LOOP;
  36         case PIPE_PRIM_LINE_STRIP: return NV50TCL_VERTEX_BEGIN_LINE_STRIP;
  37         case PIPE_PRIM_TRIANGLES: return NV50TCL_VERTEX_BEGIN_TRIANGLES;
  38         case PIPE_PRIM_TRIANGLE_STRIP:
  39                 return NV50TCL_VERTEX_BEGIN_TRIANGLE_STRIP;
  40         case PIPE_PRIM_TRIANGLE_FAN: return NV50TCL_VERTEX_BEGIN_TRIANGLE_FAN;
  41         case PIPE_PRIM_QUADS: return NV50TCL_VERTEX_BEGIN_QUADS;
  42         case PIPE_PRIM_QUAD_STRIP: return NV50TCL_VERTEX_BEGIN_QUAD_STRIP;
  43         case PIPE_PRIM_POLYGON: return NV50TCL_VERTEX_BEGIN_POLYGON;
  44         default:
  45                 break;
  46         }
  47
  48         NOUVEAU_ERR("invalid primitive type %d\n", mode);
  49         return NV50TCL_VERTEX_BEGIN_POINTS;
  50 }
  51
  52 boolean
  53 nv50_draw_arrays(struct pipe_context *pipe, unsigned mode, unsigned start,
  54                  unsigned count)
  55 {
  56         struct nv50_context *nv50 = nv50_context(pipe);
  57
  58         nv50_state_validate(nv50);
  59
  60         BEGIN_RING(tesla, 0x142c, 1);
  61         OUT_RING  (0);
  62         BEGIN_RING(tesla, 0x142c, 1);
  63         OUT_RING  (0);
  64
  65         BEGIN_RING(tesla, NV50TCL_VERTEX_BEGIN, 1);
  66         OUT_RING  (nv50_prim(mode));
  67         BEGIN_RING(tesla, NV50TCL_VERTEX_BUFFER_FIRST, 2);
  68         OUT_RING  (start);
  69         OUT_RING  (count);
  70         BEGIN_RING(tesla, NV50TCL_VERTEX_END, 1);
  71         OUT_RING  (0);
  72
  73         pipe->flush(pipe, 0, NULL);
  74         return TRUE;
  75 }
  76
  77 static INLINE void
  78 nv50_draw_elements_inline_u08(struct nv50_context *nv50, uint8_t *map,
  79                               unsigned start, unsigned count)
  80 {
  81         map += start;
  82
  83         if (count & 1) {
  84                 BEGIN_RING(tesla, 0x15e8, 1);
  85                 OUT_RING  (map[0]);
  86                 map++;
  87                 count--;
  88         }
  89
  90         while (count) {
  91                 unsigned nr = count > 2046 ? 2046 : count;
  92                 int i;
  93
  94                 BEGIN_RING(tesla, 0x400015f0, nr >> 1);
  95                 for (i = 0; i < nr; i += 2)
  96                         OUT_RING  ((map[1] << 16) | map[0]);
  97
  98                 count -= nr;
  99                 map += nr;
 100         }
 101 }
 102
 103 static INLINE void
 104 nv50_draw_elements_inline_u16(struct nv50_context *nv50, uint16_t *map,
 105                               unsigned start, unsigned count)
 106 {
 107         map += start;
 108
 109         if (count & 1) {
 110                 BEGIN_RING(tesla, 0x15e8, 1);
 111                 OUT_RING  (map[0]);
 112                 map++;
 113                 count--;
 114         }
 115
 116         while (count) {
 117                 unsigned nr = count > 2046 ? 2046 : count;
 118                 int i;
 119
 120                 BEGIN_RING(tesla, 0x400015f0, nr >> 1);
 121                 for (i = 0; i < nr; i += 2)
 122                         OUT_RING  ((map[1] << 16) | map[0]);
 123
 124                 count -= nr;
 125                 map += nr;
 126         }
 127 }
 128
 129 static INLINE void
 130 nv50_draw_elements_inline_u32(struct nv50_context *nv50, uint8_t *map,
 131                               unsigned start, unsigned count)
 132 {
 133         map += start;
 134
 135         while (count) {
 136                 unsigned nr = count > 2047 ? 2047 : count;
 137
 138                 BEGIN_RING(tesla, 0x400015e8, nr);
 139                 OUT_RINGp (map, nr);
 140
 141                 count -= nr;
 142                 map += nr;
 143         }
 144 }
 145
 146 boolean
 147 nv50_draw_elements(struct pipe_context *pipe,
 148                    struct pipe_buffer *indexBuffer, unsigned indexSize,
 149                    unsigned mode, unsigned start, unsigned count)
 150 {
 151         struct nv50_context *nv50 = nv50_context(pipe);
 152         struct pipe_winsys *ws = pipe->winsys;
 153         void *map = ws->buffer_map(ws, indexBuffer, PIPE_BUFFER_USAGE_CPU_READ);
 154
 155         nv50_state_validate(nv50);
 156
 157         BEGIN_RING(tesla, 0x142c, 1);
 158         OUT_RING  (0);
 159         BEGIN_RING(tesla, 0x142c, 1);
 160         OUT_RING  (0);
 161
 162         BEGIN_RING(tesla, NV50TCL_VERTEX_BEGIN, 1);
 163         OUT_RING  (nv50_prim(mode));
 164         switch (indexSize) {
 165         case 1:
 166                 nv50_draw_elements_inline_u08(nv50, map, start, count);
 167                 break;
 168         case 2:
 169                 nv50_draw_elements_inline_u16(nv50, map, start, count);
 170                 break;
 171         case 4:
 172                 nv50_draw_elements_inline_u32(nv50, map, start, count);
 173                 break;
 174         default:
 175                 assert(0);
 176         }
 177         BEGIN_RING(tesla, NV50TCL_VERTEX_END, 1);
 178         OUT_RING  (0);
 179
 180         pipe->flush(pipe, 0, NULL);
 181         return TRUE;
 182 }
 183
 184 void
 185 nv50_vbo_validate(struct nv50_context *nv50)
 186 {
 187         struct nouveau_grobj *tesla = nv50->screen->tesla;
 188         struct nouveau_stateobj *vtxbuf, *vtxfmt;
 189         int i, vpi = 0;
 190
 191         vtxbuf = so_new(nv50->vtxelt_nr * 4, nv50->vtxelt_nr * 2);
 192         vtxfmt = so_new(nv50->vtxelt_nr + 1, 0);
 193         so_method(vtxfmt, tesla, 0x1ac0, nv50->vtxelt_nr);
 194
 195         for (i = 0; i < nv50->vtxelt_nr; i++) {
 196                 struct pipe_vertex_element *ve = &nv50->vtxelt[i];
 197                 struct pipe_vertex_buffer *vb =
 198                         &nv50->vtxbuf[ve->vertex_buffer_index];
 199
 200                 switch (ve->src_format) {
 201                 case PIPE_FORMAT_R32G32B32A32_FLOAT:
 202                         so_data(vtxfmt, 0x7e080000 | i);
 203                         break;
 204                 case PIPE_FORMAT_R32G32B32_FLOAT:
 205                         so_data(vtxfmt, 0x7e100000 | i);
 206                         break;
 207                 case PIPE_FORMAT_R32G32_FLOAT:
 208                         so_data(vtxfmt, 0x7e200000 | i);
 209                         break;
 210                 case PIPE_FORMAT_R32_FLOAT:
 211                         so_data(vtxfmt, 0x7e900000 | i);
 212                         break;
 213                 case PIPE_FORMAT_R8G8B8A8_UNORM:
 214                         so_data(vtxfmt, 0x24500000 | i);
 215                         break;
 216                 default:
 217                 {
 218                         NOUVEAU_ERR("invalid vbo format %s\n",
 219                                     pf_name(ve->src_format));
 220                         assert(0);
 221                         return;
 222                 }
 223                 }
 224
 225                 so_method(vtxbuf, tesla, 0x900 + (i * 16), 3);
 226                 so_data  (vtxbuf, 0x20000000 | vb->pitch);
 227                 so_reloc (vtxbuf, vb->buffer, vb->buffer_offset +
 228                           ve->src_offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_GART |
 229                           NOUVEAU_BO_RD | NOUVEAU_BO_HIGH, 0, 0);
 230                 so_reloc (vtxbuf, vb->buffer, vb->buffer_offset +
 231                           ve->src_offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_GART |
 232                           NOUVEAU_BO_RD | NOUVEAU_BO_LOW, 0, 0);
 233         }
 234
 235         so_ref (vtxfmt, &nv50->state.vtxfmt);
 236         so_ref (vtxbuf, &nv50->state.vtxbuf);
 237 }
 238