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         struct nouveau_channel *chan = nv50->screen->nvws->channel;
  57         struct nouveau_grobj *tesla = nv50->screen->tesla;
  58
  59         nv50_state_validate(nv50);
  60
  61         BEGIN_RING(chan, tesla, 0x142c, 1);
  62         OUT_RING  (chan, 0);
  63         BEGIN_RING(chan, tesla, 0x142c, 1);
  64         OUT_RING  (chan, 0);
  65         BEGIN_RING(chan, tesla, 0x1440, 1);
  66         OUT_RING  (chan, 0);
  67         BEGIN_RING(chan, tesla, 0x1334, 1);
  68         OUT_RING  (chan, 0);
  69
  70         BEGIN_RING(chan, tesla, NV50TCL_VERTEX_BEGIN, 1);
  71         OUT_RING  (chan, nv50_prim(mode));
  72         BEGIN_RING(chan, tesla, NV50TCL_VERTEX_BUFFER_FIRST, 2);
  73         OUT_RING  (chan, start);
  74         OUT_RING  (chan, count);
  75         BEGIN_RING(chan, tesla, NV50TCL_VERTEX_END, 1);
  76         OUT_RING  (chan, 0);
  77
  78         pipe->flush(pipe, 0, NULL);
  79         return TRUE;
  80 }
  81
  82 static INLINE void
  83 nv50_draw_elements_inline_u08(struct nv50_context *nv50, uint8_t *map,
  84                               unsigned start, unsigned count)
  85 {
  86         struct nouveau_channel *chan = nv50->screen->nvws->channel;
  87         struct nouveau_grobj *tesla = nv50->screen->tesla;
  88
  89         map += start;
  90
  91         if (count & 1) {
  92                 BEGIN_RING(chan, tesla, 0x15e8, 1);
  93                 OUT_RING  (chan, map[0]);
  94                 map++;
  95                 count--;
  96         }
  97
  98         while (count) {
  99                 unsigned nr = count > 2046 ? 2046 : count;
 100                 int i;
 101
 102                 BEGIN_RING(chan, tesla, 0x400015f0, nr >> 1);
 103                 for (i = 0; i < nr; i += 2)
 104                         OUT_RING  (chan, (map[1] << 16) | map[0]);
 105
 106                 count -= nr;
 107                 map += nr;
 108         }
 109 }
 110
 111 static INLINE void
 112 nv50_draw_elements_inline_u16(struct nv50_context *nv50, uint16_t *map,
 113                               unsigned start, unsigned count)
 114 {
 115         struct nouveau_channel *chan = nv50->screen->nvws->channel;
 116         struct nouveau_grobj *tesla = nv50->screen->tesla;
 117
 118         map += start;
 119
 120         if (count & 1) {
 121                 BEGIN_RING(chan, tesla, 0x15e8, 1);
 122                 OUT_RING  (chan, map[0]);
 123                 map++;
 124                 count--;
 125         }
 126
 127         while (count) {
 128                 unsigned nr = count > 2046 ? 2046 : count;
 129                 int i;
 130
 131                 BEGIN_RING(chan, tesla, 0x400015f0, nr >> 1);
 132                 for (i = 0; i < nr; i += 2)
 133                         OUT_RING  (chan, (map[1] << 16) | map[0]);
 134
 135                 count -= nr;
 136                 map += nr;
 137         }
 138 }
 139
 140 static INLINE void
 141 nv50_draw_elements_inline_u32(struct nv50_context *nv50, uint8_t *map,
 142                               unsigned start, unsigned count)
 143 {
 144         struct nouveau_channel *chan = nv50->screen->nvws->channel;
 145         struct nouveau_grobj *tesla = nv50->screen->tesla;
 146
 147         map += start;
 148
 149         while (count) {
 150                 unsigned nr = count > 2047 ? 2047 : count;
 151
 152                 BEGIN_RING(chan, tesla, 0x400015e8, nr);
 153                 OUT_RINGp (chan, map, nr);
 154
 155                 count -= nr;
 156                 map += nr;
 157         }
 158 }
 159
 160 boolean
 161 nv50_draw_elements(struct pipe_context *pipe,
 162                    struct pipe_buffer *indexBuffer, unsigned indexSize,
 163                    unsigned mode, unsigned start, unsigned count)
 164 {
 165         struct nv50_context *nv50 = nv50_context(pipe);
 166         struct nouveau_channel *chan = nv50->screen->nvws->channel;
 167         struct nouveau_grobj *tesla = nv50->screen->tesla;
 168         struct pipe_winsys *ws = pipe->winsys;
 169         void *map = ws->buffer_map(ws, indexBuffer, PIPE_BUFFER_USAGE_CPU_READ);
 170
 171         nv50_state_validate(nv50);
 172
 173         BEGIN_RING(chan, tesla, 0x142c, 1);
 174         OUT_RING  (chan, 0);
 175         BEGIN_RING(chan, tesla, 0x142c, 1);
 176         OUT_RING  (chan, 0);
 177
 178         BEGIN_RING(chan, tesla, NV50TCL_VERTEX_BEGIN, 1);
 179         OUT_RING  (chan, nv50_prim(mode));
 180         switch (indexSize) {
 181         case 1:
 182                 nv50_draw_elements_inline_u08(nv50, map, start, count);
 183                 break;
 184         case 2:
 185                 nv50_draw_elements_inline_u16(nv50, map, start, count);
 186                 break;
 187         case 4:
 188                 nv50_draw_elements_inline_u32(nv50, map, start, count);
 189                 break;
 190         default:
 191                 assert(0);
 192         }
 193         BEGIN_RING(chan, tesla, NV50TCL_VERTEX_END, 1);
 194         OUT_RING  (chan, 0);
 195
 196         pipe->flush(pipe, 0, NULL);
 197         return TRUE;
 198 }
 199
 200 void
 201 nv50_vbo_validate(struct nv50_context *nv50)
 202 {
 203         struct nouveau_grobj *tesla = nv50->screen->tesla;
 204         struct nouveau_stateobj *vtxbuf, *vtxfmt;
 205         int i;
 206
 207         vtxbuf = so_new(nv50->vtxelt_nr * 4, nv50->vtxelt_nr * 2);
 208         vtxfmt = so_new(nv50->vtxelt_nr + 1, 0);
 209         so_method(vtxfmt, tesla, 0x1ac0, nv50->vtxelt_nr);
 210
 211         for (i = 0; i < nv50->vtxelt_nr; i++) {
 212                 struct pipe_vertex_element *ve = &nv50->vtxelt[i];
 213                 struct pipe_vertex_buffer *vb =
 214                         &nv50->vtxbuf[ve->vertex_buffer_index];
 215                 struct nouveau_bo *bo = nouveau_bo(vb->buffer);
 216
 217                 switch (ve->src_format) {
 218                 case PIPE_FORMAT_R32G32B32A32_FLOAT:
 219                         so_data(vtxfmt, 0x7e080000 | i);
 220                         break;
 221                 case PIPE_FORMAT_R32G32B32_FLOAT:
 222                         so_data(vtxfmt, 0x7e100000 | i);
 223                         break;
 224                 case PIPE_FORMAT_R32G32_FLOAT:
 225                         so_data(vtxfmt, 0x7e200000 | i);
 226                         break;
 227                 case PIPE_FORMAT_R32_FLOAT:
 228                         so_data(vtxfmt, 0x7e900000 | i);
 229                         break;
 230                 case PIPE_FORMAT_R8G8B8A8_UNORM:
 231                         so_data(vtxfmt, 0x24500000 | i);
 232                         break;
 233                 default:
 234                 {
 235                         NOUVEAU_ERR("invalid vbo format %s\n",
 236                                     pf_name(ve->src_format));
 237                         assert(0);
 238                         return;
 239                 }
 240                 }
 241
 242                 so_method(vtxbuf, tesla, 0x900 + (i * 16), 3);
 243                 so_data  (vtxbuf, 0x20000000 | vb->stride);
 244                 so_reloc (vtxbuf, bo, vb->buffer_offset +
 245                           ve->src_offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_GART |
 246                           NOUVEAU_BO_RD | NOUVEAU_BO_HIGH, 0, 0);
 247                 so_reloc (vtxbuf, bo, vb->buffer_offset +
 248                           ve->src_offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_GART |
 249                           NOUVEAU_BO_RD | NOUVEAU_BO_LOW, 0, 0);
 250         }
 251
 252         so_ref (vtxfmt, &nv50->state.vtxfmt);
 253         so_ref (vtxbuf, &nv50->state.vtxbuf);
 254         so_ref (NULL, &vtxbuf);
 255         so_ref (NULL, &vtxfmt);
 256 }
 257