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 static INLINE uint32_t
  53 nv50_vbo_type_to_hw(unsigned type)
  54 {
  55         switch (type) {
  56         case PIPE_FORMAT_TYPE_FLOAT:
  57                 return NV50TCL_VERTEX_ARRAY_ATTRIB_TYPE_FLOAT;
  58         case PIPE_FORMAT_TYPE_UNORM:
  59                 return NV50TCL_VERTEX_ARRAY_ATTRIB_TYPE_UNORM;
  60         case PIPE_FORMAT_TYPE_SNORM:
  61                 return NV50TCL_VERTEX_ARRAY_ATTRIB_TYPE_SNORM;
  62         case PIPE_FORMAT_TYPE_USCALED:
  63                 return NV50TCL_VERTEX_ARRAY_ATTRIB_TYPE_USCALED;
  64         case PIPE_FORMAT_TYPE_SSCALED:
  65                 return NV50TCL_VERTEX_ARRAY_ATTRIB_TYPE_SSCALED;
  66         /*
  67         case PIPE_FORMAT_TYPE_UINT:
  68                 return NV50TCL_VERTEX_ARRAY_ATTRIB_TYPE_UINT;
  69         case PIPE_FORMAT_TYPE_SINT:
  70                 return NV50TCL_VERTEX_ARRAY_ATTRIB_TYPE_SINT; */
  71         default:
  72                 return 0;
  73         }
  74 }
  75
  76 static INLINE uint32_t
  77 nv50_vbo_size_to_hw(unsigned size, unsigned nr_c)
  78 {
  79         static const uint32_t hw_values[] = {
  80                 0, 0, 0, 0,
  81                 NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_8,
  82                 NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_8_8,
  83                 NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_8_8_8,
  84                 NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_8_8_8_8,
  85                 NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_16,
  86                 NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_16_16,
  87                 NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_16_16_16,
  88                 NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_16_16_16_16,
  89                 0, 0, 0, 0,
  90                 NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_32,
  91                 NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_32_32,
  92                 NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_32_32_32,
  93                 NV50TCL_VERTEX_ARRAY_ATTRIB_SIZE_32_32_32_32 };
  94
  95         /* we'd also have R11G11B10 and R10G10B10A2 */
  96
  97         assert(nr_c > 0 && nr_c <= 4);
  98
  99         if (size > 32)
 100                 return 0;
 101         size >>= (3 - 2);
 102
 103         return hw_values[size + (nr_c - 1)];
 104 }
 105
 106 static INLINE uint32_t
 107 nv50_vbo_vtxelt_to_hw(struct pipe_vertex_element *ve)
 108 {
 109         uint32_t hw_type, hw_size;
 110         enum pipe_format pf = ve->src_format;
 111         unsigned size = pf_size_x(pf) << pf_exp2(pf);
 112
 113         hw_type = nv50_vbo_type_to_hw(pf_type(pf));
 114         hw_size = nv50_vbo_size_to_hw(size, ve->nr_components);
 115
 116         if (!hw_type || !hw_size) {
 117                 NOUVEAU_ERR("unsupported vbo format: %s\n", pf_name(pf));
 118                 abort();
 119                 return 0x24e80000;
 120         }
 121
 122         if (pf_swizzle_x(pf) == 2) /* BGRA */
 123                 hw_size |= (1 << 31); /* no real swizzle bits :-( */
 124
 125         return (hw_type | hw_size);
 126 }
 127
 128 boolean
 129 nv50_draw_arrays(struct pipe_context *pipe, unsigned mode, unsigned start,
 130                  unsigned count)
 131 {
 132         struct nv50_context *nv50 = nv50_context(pipe);
 133         struct nouveau_channel *chan = nv50->screen->tesla->channel;
 134         struct nouveau_grobj *tesla = nv50->screen->tesla;
 135
 136         nv50_state_validate(nv50);
 137
 138         BEGIN_RING(chan, tesla, 0x142c, 1);
 139         OUT_RING  (chan, 0);
 140         BEGIN_RING(chan, tesla, 0x142c, 1);
 141         OUT_RING  (chan, 0);
 142         BEGIN_RING(chan, tesla, 0x1440, 1);
 143         OUT_RING  (chan, 0);
 144         BEGIN_RING(chan, tesla, 0x1334, 1);
 145         OUT_RING  (chan, 0);
 146
 147         BEGIN_RING(chan, tesla, NV50TCL_VERTEX_BEGIN, 1);
 148         OUT_RING  (chan, nv50_prim(mode));
 149         BEGIN_RING(chan, tesla, NV50TCL_VERTEX_BUFFER_FIRST, 2);
 150         OUT_RING  (chan, start);
 151         OUT_RING  (chan, count);
 152         BEGIN_RING(chan, tesla, NV50TCL_VERTEX_END, 1);
 153         OUT_RING  (chan, 0);
 154
 155         pipe->flush(pipe, 0, NULL);
 156         return TRUE;
 157 }
 158
 159 static INLINE void
 160 nv50_draw_elements_inline_u08(struct nv50_context *nv50, uint8_t *map,
 161                               unsigned start, unsigned count)
 162 {
 163         struct nouveau_channel *chan = nv50->screen->tesla->channel;
 164         struct nouveau_grobj *tesla = nv50->screen->tesla;
 165
 166         map += start;
 167
 168         if (count & 1) {
 169                 BEGIN_RING(chan, tesla, 0x15e8, 1);
 170                 OUT_RING  (chan, map[0]);
 171                 map++;
 172                 count--;
 173         }
 174
 175         while (count) {
 176                 unsigned nr = count > 2046 ? 2046 : count;
 177                 int i;
 178
 179                 BEGIN_RING(chan, tesla, 0x400015f0, nr >> 1);
 180                 for (i = 0; i < nr; i += 2)
 181                         OUT_RING  (chan, (map[i + 1] << 16) | map[i]);
 182
 183                 count -= nr;
 184                 map += nr;
 185         }
 186 }
 187
 188 static INLINE void
 189 nv50_draw_elements_inline_u16(struct nv50_context *nv50, uint16_t *map,
 190                               unsigned start, unsigned count)
 191 {
 192         struct nouveau_channel *chan = nv50->screen->tesla->channel;
 193         struct nouveau_grobj *tesla = nv50->screen->tesla;
 194
 195         map += start;
 196
 197         if (count & 1) {
 198                 BEGIN_RING(chan, tesla, 0x15e8, 1);
 199                 OUT_RING  (chan, map[0]);
 200                 map++;
 201                 count--;
 202         }
 203
 204         while (count) {
 205                 unsigned nr = count > 2046 ? 2046 : count;
 206                 int i;
 207
 208                 BEGIN_RING(chan, tesla, 0x400015f0, nr >> 1);
 209                 for (i = 0; i < nr; i += 2)
 210                         OUT_RING  (chan, (map[i + 1] << 16) | map[i]);
 211
 212                 count -= nr;
 213                 map += nr;
 214         }
 215 }
 216
 217 static INLINE void
 218 nv50_draw_elements_inline_u32(struct nv50_context *nv50, uint32_t *map,
 219                               unsigned start, unsigned count)
 220 {
 221         struct nouveau_channel *chan = nv50->screen->tesla->channel;
 222         struct nouveau_grobj *tesla = nv50->screen->tesla;
 223
 224         map += start;
 225
 226         while (count) {
 227                 unsigned nr = count > 2047 ? 2047 : count;
 228
 229                 BEGIN_RING(chan, tesla, 0x400015e8, nr);
 230                 OUT_RINGp (chan, map, nr);
 231
 232                 count -= nr;
 233                 map += nr;
 234         }
 235 }
 236
 237 boolean
 238 nv50_draw_elements(struct pipe_context *pipe,
 239                    struct pipe_buffer *indexBuffer, unsigned indexSize,
 240                    unsigned mode, unsigned start, unsigned count)
 241 {
 242         struct nv50_context *nv50 = nv50_context(pipe);
 243         struct nouveau_channel *chan = nv50->screen->tesla->channel;
 244         struct nouveau_grobj *tesla = nv50->screen->tesla;
 245         struct pipe_screen *pscreen = pipe->screen;
 246         void *map;
 247
 248         map = pipe_buffer_map(pscreen, indexBuffer, PIPE_BUFFER_USAGE_CPU_READ);
 249
 250         nv50_state_validate(nv50);
 251
 252         BEGIN_RING(chan, tesla, 0x142c, 1);
 253         OUT_RING  (chan, 0);
 254         BEGIN_RING(chan, tesla, 0x142c, 1);
 255         OUT_RING  (chan, 0);
 256
 257         BEGIN_RING(chan, tesla, NV50TCL_VERTEX_BEGIN, 1);
 258         OUT_RING  (chan, nv50_prim(mode));
 259         switch (indexSize) {
 260         case 1:
 261                 nv50_draw_elements_inline_u08(nv50, map, start, count);
 262                 break;
 263         case 2:
 264                 nv50_draw_elements_inline_u16(nv50, map, start, count);
 265                 break;
 266         case 4:
 267                 nv50_draw_elements_inline_u32(nv50, map, start, count);
 268                 break;
 269         default:
 270                 assert(0);
 271         }
 272         BEGIN_RING(chan, tesla, NV50TCL_VERTEX_END, 1);
 273         OUT_RING  (chan, 0);
 274
 275         pipe_buffer_unmap(pscreen, indexBuffer);
 276         pipe->flush(pipe, 0, NULL);
 277         return TRUE;
 278 }
 279
 280 static INLINE boolean
 281 nv50_vbo_static_attrib(struct nv50_context *nv50, unsigned attrib,
 282                        struct nouveau_stateobj **pso,
 283                        struct pipe_vertex_element *ve,
 284                        struct pipe_vertex_buffer *vb)
 285
 286 {
 287         struct nouveau_stateobj *so;
 288         struct nouveau_grobj *tesla = nv50->screen->tesla;
 289         struct nouveau_bo *bo = nouveau_bo(vb->buffer);
 290         float *v;
 291         int ret;
 292         enum pipe_format pf = ve->src_format;
 293
 294         if ((pf_type(pf) != PIPE_FORMAT_TYPE_FLOAT) ||
 295             (pf_size_x(pf) << pf_exp2(pf)) != 32)
 296                 return FALSE;
 297
 298         ret = nouveau_bo_map(bo, NOUVEAU_BO_RD);
 299         if (ret)
 300                 return FALSE;
 301         v = (float *)(bo->map + (vb->buffer_offset + ve->src_offset));
 302
 303         so = *pso;
 304         if (!so)
 305                 *pso = so = so_new(nv50->vtxelt_nr * 5, 0);
 306
 307         switch (ve->nr_components) {
 308         case 4:
 309                 so_method(so, tesla, NV50TCL_VTX_ATTR_4F_X(attrib), 4);
 310                 so_data  (so, fui(v[0]));
 311                 so_data  (so, fui(v[1]));
 312                 so_data  (so, fui(v[2]));
 313                 so_data  (so, fui(v[3]));
 314                 break;
 315         case 3:
 316                 so_method(so, tesla, NV50TCL_VTX_ATTR_3F_X(attrib), 3);
 317                 so_data  (so, fui(v[0]));
 318                 so_data  (so, fui(v[1]));
 319                 so_data  (so, fui(v[2]));
 320                 break;
 321         case 2:
 322                 so_method(so, tesla, NV50TCL_VTX_ATTR_2F_X(attrib), 2);
 323                 so_data  (so, fui(v[0]));
 324                 so_data  (so, fui(v[1]));
 325                 break;
 326         case 1:
 327                 so_method(so, tesla, NV50TCL_VTX_ATTR_1F(attrib), 1);
 328                 so_data  (so, fui(v[0]));
 329                 break;
 330         default:
 331                 nouveau_bo_unmap(bo);
 332                 return FALSE;
 333         }
 334
 335         nouveau_bo_unmap(bo);
 336         return TRUE;
 337 }
 338
 339 void
 340 nv50_vbo_validate(struct nv50_context *nv50)
 341 {
 342         struct nouveau_grobj *tesla = nv50->screen->tesla;
 343         struct nouveau_stateobj *vtxbuf, *vtxfmt, *vtxattr;
 344         unsigned i;
 345
 346         /* don't validate if Gallium took away our buffers */
 347         if (nv50->vtxbuf_nr == 0)
 348                 return;
 349
 350         vtxattr = NULL;
 351         vtxbuf = so_new(nv50->vtxelt_nr * 7, nv50->vtxelt_nr * 4);
 352         vtxfmt = so_new(nv50->vtxelt_nr + 1, 0);
 353         so_method(vtxfmt, tesla, NV50TCL_VERTEX_ARRAY_ATTRIB(0),
 354                 nv50->vtxelt_nr);
 355
 356         for (i = 0; i < nv50->vtxelt_nr; i++) {
 357                 struct pipe_vertex_element *ve = &nv50->vtxelt[i];
 358                 struct pipe_vertex_buffer *vb =
 359                         &nv50->vtxbuf[ve->vertex_buffer_index];
 360                 struct nouveau_bo *bo = nouveau_bo(vb->buffer);
 361                 uint32_t hw = nv50_vbo_vtxelt_to_hw(ve);
 362
 363                 if (!vb->stride &&
 364                     nv50_vbo_static_attrib(nv50, i, &vtxattr, ve, vb)) {
 365                         so_data(vtxfmt, hw | (1 << 4));
 366
 367                         so_method(vtxbuf, tesla,
 368                                   NV50TCL_VERTEX_ARRAY_FORMAT(i), 1);
 369                         so_data  (vtxbuf, 0);
 370                         continue;
 371                 }
 372                 so_data(vtxfmt, hw | i);
 373
 374                 so_method(vtxbuf, tesla, NV50TCL_VERTEX_ARRAY_FORMAT(i), 3);
 375                 so_data  (vtxbuf, 0x20000000 | vb->stride);
 376                 so_reloc (vtxbuf, bo, vb->buffer_offset +
 377                           ve->src_offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_GART |
 378                           NOUVEAU_BO_RD | NOUVEAU_BO_HIGH, 0, 0);
 379                 so_reloc (vtxbuf, bo, vb->buffer_offset +
 380                           ve->src_offset, NOUVEAU_BO_VRAM | NOUVEAU_BO_GART |
 381                           NOUVEAU_BO_RD | NOUVEAU_BO_LOW, 0, 0);
 382
 383                 /* vertex array limits */
 384                 so_method(vtxbuf, tesla, 0x1080 + (i * 8), 2);
 385                 so_reloc (vtxbuf, bo, vb->buffer->size - 1,
 386                           NOUVEAU_BO_VRAM | NOUVEAU_BO_GART | NOUVEAU_BO_RD |
 387                           NOUVEAU_BO_HIGH, 0, 0);
 388                 so_reloc (vtxbuf, bo, vb->buffer->size - 1,
 389                           NOUVEAU_BO_VRAM | NOUVEAU_BO_GART | NOUVEAU_BO_RD |
 390                           NOUVEAU_BO_LOW, 0, 0);
 391         }
 392
 393         so_ref (vtxfmt, &nv50->state.vtxfmt);
 394         so_ref (vtxbuf, &nv50->state.vtxbuf);
 395         so_ref (vtxattr, &nv50->state.vtxattr);
 396         so_ref (NULL, &vtxbuf);
 397         so_ref (NULL, &vtxfmt);
 398         so_ref (NULL, &vtxattr);
 399 }
 400