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_inlines.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         struct nouveau_channel *chan = nv50->screen->tesla->channel;
  58         struct nouveau_grobj *tesla = nv50->screen->tesla;
  59
  60         nv50_state_validate(nv50);
  61
  62         BEGIN_RING(chan, tesla, 0x142c, 1);
  63         OUT_RING  (chan, 0);
  64         BEGIN_RING(chan, tesla, 0x142c, 1);
  65         OUT_RING  (chan, 0);
  66         BEGIN_RING(chan, tesla, 0x1440, 1);
  67         OUT_RING  (chan, 0);
  68         BEGIN_RING(chan, tesla, 0x1334, 1);
  69         OUT_RING  (chan, 0);
  70
  71         BEGIN_RING(chan, tesla, NV50TCL_VERTEX_BEGIN, 1);
  72         OUT_RING  (chan, nv50_prim(mode));
  73         BEGIN_RING(chan, tesla, NV50TCL_VERTEX_BUFFER_FIRST, 2);
  74         OUT_RING  (chan, start);
  75         OUT_RING  (chan, count);
  76         BEGIN_RING(chan, tesla, NV50TCL_VERTEX_END, 1);
  77         OUT_RING  (chan, 0);
  78
  79         pipe->flush(pipe, 0, NULL);
  80         return TRUE;
  81 }
  82
  83 static INLINE void
  84 nv50_draw_elements_inline_u08(struct nv50_context *nv50, uint8_t *map,
  85                               unsigned start, unsigned count)
  86 {
  87         struct nouveau_channel *chan = nv50->screen->tesla->channel;
  88         struct nouveau_grobj *tesla = nv50->screen->tesla;
  89
  90         map += start;
  91
  92         if (count & 1) {
  93                 BEGIN_RING(chan, tesla, 0x15e8, 1);
  94                 OUT_RING  (chan, map[0]);
  95                 map++;
  96                 count--;
  97         }
  98
  99         while (count) {
 100                 unsigned nr = count > 2046 ? 2046 : count;
 101                 int i;
 102
 103                 BEGIN_RING(chan, tesla, 0x400015f0, nr >> 1);
 104                 for (i = 0; i < nr; i += 2)
 105                         OUT_RING  (chan, (map[1] << 16) | map[0]);
 106
 107                 count -= nr;
 108                 map += nr;
 109         }
 110 }
 111
 112 static INLINE void
 113 nv50_draw_elements_inline_u16(struct nv50_context *nv50, uint16_t *map,
 114                               unsigned start, unsigned count)
 115 {
 116         struct nouveau_channel *chan = nv50->screen->tesla->channel;
 117         struct nouveau_grobj *tesla = nv50->screen->tesla;
 118
 119         map += start;
 120
 121         if (count & 1) {
 122                 BEGIN_RING(chan, tesla, 0x15e8, 1);
 123                 OUT_RING  (chan, map[0]);
 124                 map++;
 125                 count--;
 126         }
 127
 128         while (count) {
 129                 unsigned nr = count > 2046 ? 2046 : count;
 130                 int i;
 131
 132                 BEGIN_RING(chan, tesla, 0x400015f0, nr >> 1);
 133                 for (i = 0; i < nr; i += 2)
 134                         OUT_RING  (chan, (map[1] << 16) | map[0]);
 135
 136                 count -= nr;
 137                 map += nr;
 138         }
 139 }
 140
 141 static INLINE void
 142 nv50_draw_elements_inline_u32(struct nv50_context *nv50, uint8_t *map,
 143                               unsigned start, unsigned count)
 144 {
 145         struct nouveau_channel *chan = nv50->screen->tesla->channel;
 146         struct nouveau_grobj *tesla = nv50->screen->tesla;
 147
 148         map += start;
 149
 150         while (count) {
 151                 unsigned nr = count > 2047 ? 2047 : count;
 152
 153                 BEGIN_RING(chan, tesla, 0x400015e8, nr);
 154                 OUT_RINGp (chan, map, nr);
 155
 156                 count -= nr;
 157                 map += nr;
 158         }
 159 }
 160
 161 boolean
 162 nv50_draw_elements(struct pipe_context *pipe,
 163                    struct pipe_buffer *indexBuffer, unsigned indexSize,
 164                    unsigned mode, unsigned start, unsigned count)
 165 {
 166         struct nv50_context *nv50 = nv50_context(pipe);
 167         struct nouveau_channel *chan = nv50->screen->tesla->channel;
 168         struct nouveau_grobj *tesla = nv50->screen->tesla;
 169         struct pipe_screen *pscreen = pipe->screen;
 170         void *map;
 171
 172         map = pipe_buffer_map(pscreen, indexBuffer, PIPE_BUFFER_USAGE_CPU_READ);
 173
 174         nv50_state_validate(nv50);
 175
 176         BEGIN_RING(chan, tesla, 0x142c, 1);
 177         OUT_RING  (chan, 0);
 178         BEGIN_RING(chan, tesla, 0x142c, 1);
 179         OUT_RING  (chan, 0);
 180
 181         BEGIN_RING(chan, tesla, NV50TCL_VERTEX_BEGIN, 1);
 182         OUT_RING  (chan, nv50_prim(mode));
 183         switch (indexSize) {
 184         case 1:
 185                 nv50_draw_elements_inline_u08(nv50, map, start, count);
 186                 break;
 187         case 2:
 188                 nv50_draw_elements_inline_u16(nv50, map, start, count);
 189                 break;
 190         case 4:
 191                 nv50_draw_elements_inline_u32(nv50, map, start, count);
 192                 break;
 193         default:
 194                 assert(0);
 195         }
 196         BEGIN_RING(chan, tesla, NV50TCL_VERTEX_END, 1);
 197         OUT_RING  (chan, 0);
 198
 199         pipe_buffer_unmap(pscreen, indexBuffer);
 200         pipe->flush(pipe, 0, NULL);
 201         return TRUE;
 202 }
 203
 204 void
 205 nv50_vbo_validate(struct nv50_context *nv50)
 206 {
 207         struct nouveau_grobj *tesla = nv50->screen->tesla;
 208         struct nouveau_stateobj *vtxbuf, *vtxfmt;
 209         int i;
 210
 211         vtxbuf = so_new(nv50->vtxelt_nr * 4, nv50->vtxelt_nr * 2);
 212         vtxfmt = so_new(nv50->vtxelt_nr + 1, 0);
 213         so_method(vtxfmt, tesla, 0x1ac0, nv50->vtxelt_nr);
 214
 215         for (i = 0; i < nv50->vtxelt_nr; i++) {
 216                 struct pipe_vertex_element *ve = &nv50->vtxelt[i];
 217                 struct pipe_vertex_buffer *vb =
 218                         &nv50->vtxbuf[ve->vertex_buffer_index];
 219                 struct nouveau_bo *bo = nouveau_bo(vb->buffer);
 220
 221                 switch (ve->src_format) {
 222                 case PIPE_FORMAT_R32G32B32A32_FLOAT:
 223                         so_data(vtxfmt, 0x7e080000 | i);
 224                         break;
 225                 case PIPE_FORMAT_R32G32B32_FLOAT:
 226                         so_data(vtxfmt, 0x7e100000 | i);
 227                         break;
 228                 case PIPE_FORMAT_R32G32_FLOAT:
 229                         so_data(vtxfmt, 0x7e200000 | i);
 230                         break;
 231                 case PIPE_FORMAT_R32_FLOAT:
 232                         so_data(vtxfmt, 0x7e900000 | i);
 233                         break;
 234                 case PIPE_FORMAT_R8G8B8A8_UNORM:
 235                         so_data(vtxfmt, 0x24500000 | i);
 236                         break;
 237                 default:
 238                 {
 239                         NOUVEAU_ERR("invalid vbo format %s\n",
 240                                     pf_name(ve->src_format));
 241                         assert(0);
 242                         return;
 243                 }
 244                 }
 245
 246                 so_method(vtxbuf, tesla, 0x900 + (i * 16), 3);
 247                 so_data  (vtxbuf, 0x20000000 | vb->stride);
 248                 so_reloc (vtxbuf, bo, vb->buffer_offset +
 249                           ve->src_offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_GART |
 250                           NOUVEAU_BO_RD | NOUVEAU_BO_HIGH, 0, 0);
 251                 so_reloc (vtxbuf, bo, vb->buffer_offset +
 252                           ve->src_offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_GART |
 253                           NOUVEAU_BO_RD | NOUVEAU_BO_LOW, 0, 0);
 254         }
 255
 256         so_ref (vtxfmt, &nv50->state.vtxfmt);
 257         so_ref (vtxbuf, &nv50->state.vtxbuf);
 258         so_ref (NULL, &vtxbuf);
 259         so_ref (NULL, &vtxfmt);
 260 }
 261