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