src/gallium/drivers/r300/r300_render.c

   1 /*
   2  * Copyright 2009 Corbin Simpson <MostAwesomeDude@gmail.com>
   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  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  22
  23 /* r300_render: Vertex and index buffer primitive emission. Contains both
  24  * HW TCL fastpath rendering, and SW TCL Draw-assisted rendering. */
  25
  26 #include "draw/draw_context.h"
  27 #include "draw/draw_vbuf.h"
  28
  29 #include "pipe/p_inlines.h"
  30
  31 #include "util/u_memory.h"
  32 #include "util/u_prim.h"
  33
  34 #include "r300_cs.h"
  35 #include "r300_context.h"
  36 #include "r300_emit.h"
  37 #include "r300_reg.h"
  38 #include "r300_render.h"
  39 #include "r300_state_derived.h"
  40 #include "r300_vbo.h"
  41
  42 /* r300_render: Vertex and index buffer primitive emission. */
  43 #define R300_MAX_VBO_SIZE  (1024 * 1024)
  44
  45 uint32_t r300_translate_primitive(unsigned prim)
  46 {
  47     switch (prim) {
  48         case PIPE_PRIM_POINTS:
  49             return R300_VAP_VF_CNTL__PRIM_POINTS;
  50         case PIPE_PRIM_LINES:
  51             return R300_VAP_VF_CNTL__PRIM_LINES;
  52         case PIPE_PRIM_LINE_LOOP:
  53             return R300_VAP_VF_CNTL__PRIM_LINE_LOOP;
  54         case PIPE_PRIM_LINE_STRIP:
  55             return R300_VAP_VF_CNTL__PRIM_LINE_STRIP;
  56         case PIPE_PRIM_TRIANGLES:
  57             return R300_VAP_VF_CNTL__PRIM_TRIANGLES;
  58         case PIPE_PRIM_TRIANGLE_STRIP:
  59             return R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP;
  60         case PIPE_PRIM_TRIANGLE_FAN:
  61             return R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN;
  62         case PIPE_PRIM_QUADS:
  63             return R300_VAP_VF_CNTL__PRIM_QUADS;
  64         case PIPE_PRIM_QUAD_STRIP:
  65             return R300_VAP_VF_CNTL__PRIM_QUAD_STRIP;
  66         case PIPE_PRIM_POLYGON:
  67             return R300_VAP_VF_CNTL__PRIM_POLYGON;
  68         default:
  69             return 0;
  70     }
  71 }
  72
  73 static void r300_emit_draw_arrays(struct r300_context *r300,
  74                                   unsigned mode,
  75                                   unsigned count)
  76 {
  77     CS_LOCALS(r300);
  78
  79     BEGIN_CS(4);
  80     OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX, count);
  81     OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2, 0);
  82     OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) |
  83            r300_translate_primitive(mode));
  84     END_CS;
  85 }
  86
  87 static void r300_emit_draw_elements(struct r300_context *r300,
  88                                     struct pipe_buffer* indexBuffer,
  89                                     unsigned indexSize,
  90                                     unsigned minIndex,
  91                                     unsigned maxIndex,
  92                                     unsigned mode,
  93                                     unsigned start,
  94                                     unsigned count)
  95 {
  96     uint32_t count_dwords;
  97     uint32_t offset_dwords = indexSize * start / sizeof(uint32_t);
  98     CS_LOCALS(r300);
  99
 100     /* XXX most of these are stupid */
 101     assert(indexSize == 4 || indexSize == 2);
 102     assert((start * indexSize)  % 4 == 0);
 103     assert(offset_dwords == 0);
 104
 105     BEGIN_CS(10);
 106     OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX, maxIndex);
 107     OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, 0);
 108     if (indexSize == 4) {
 109         count_dwords = count + start;
 110         OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) |
 111                R300_VAP_VF_CNTL__INDEX_SIZE_32bit |
 112                r300_translate_primitive(mode));
 113     } else {
 114         count_dwords = (count + start + 1) / 2;
 115         OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) |
 116                r300_translate_primitive(mode));
 117     }
 118
 119     /* INDX_BUFFER is a truly special packet3.
 120      * Unlike most other packet3, where the offset is after the count,
 121      * the order is reversed, so the relocation ends up carrying the
 122      * size of the indexbuf instead of the offset.
 123      *
 124      * XXX Fix offset
 125      */
 126     OUT_CS_PKT3(R300_PACKET3_INDX_BUFFER, 2);
 127     OUT_CS(R300_INDX_BUFFER_ONE_REG_WR | (R300_VAP_PORT_IDX0 >> 2) |
 128            (0 << R300_INDX_BUFFER_SKIP_SHIFT));
 129     OUT_CS(offset_dwords);
 130     OUT_CS_RELOC(indexBuffer, count_dwords,
 131         RADEON_GEM_DOMAIN_GTT, 0, 0);
 132
 133     END_CS;
 134 }
 135
 136
 137 static boolean r300_setup_vertex_buffers(struct r300_context *r300)
 138 {
 139     struct pipe_vertex_buffer *vbuf = r300->vertex_buffer;
 140     struct pipe_vertex_element *velem = r300->vertex_element;
 141
 142 validate:
 143     for (int i = 0; i < r300->aos_count; i++) {
 144         if (!r300->winsys->add_buffer(r300->winsys,
 145                 vbuf[velem[i].vertex_buffer_index].buffer,
 146             RADEON_GEM_DOMAIN_GTT, 0)) {
 147             r300->context.flush(&r300->context, 0, NULL);
 148             goto validate;
 149         }
 150     }
 151
 152     if (!r300->winsys->validate(r300->winsys)) {
 153         r300->context.flush(&r300->context, 0, NULL);
 154         return r300->winsys->validate(r300->winsys);
 155     }
 156
 157     return TRUE;
 158 }
 159
 160 /* This is the fast-path drawing & emission for HW TCL. */
 161 boolean r300_draw_range_elements(struct pipe_context* pipe,
 162                                  struct pipe_buffer* indexBuffer,
 163                                  unsigned indexSize,
 164                                  unsigned minIndex,
 165                                  unsigned maxIndex,
 166                                  unsigned mode,
 167                                  unsigned start,
 168                                  unsigned count)
 169 {
 170     struct r300_context* r300 = r300_context(pipe);
 171
 172     if (!u_trim_pipe_prim(mode, &count)) {
 173         return FALSE;
 174     }
 175
 176     if (count > 65535) {
 177         return FALSE;
 178     }
 179
 180     r300_update_derived_state(r300);
 181
 182     if (!r300_setup_vertex_buffers(r300)) {
 183         return FALSE;
 184     }
 185
 186     setup_vertex_attributes(r300);
 187
 188     setup_index_buffer(r300, indexBuffer, indexSize);
 189
 190     r300_emit_dirty_state(r300);
 191
 192     r300_emit_aos(r300, 0);
 193
 194     r300_emit_draw_elements(r300, indexBuffer, indexSize, minIndex, maxIndex,
 195                             mode, start, count);
 196
 197     return TRUE;
 198 }
 199
 200 /* Simple helpers for context setup. Should probably be moved to util. */
 201 boolean r300_draw_elements(struct pipe_context* pipe,
 202                            struct pipe_buffer* indexBuffer,
 203                            unsigned indexSize, unsigned mode,
 204                            unsigned start, unsigned count)
 205 {
 206     return pipe->draw_range_elements(pipe, indexBuffer, indexSize, 0, ~0,
 207                                      mode, start, count);
 208 }
 209
 210 boolean r300_draw_arrays(struct pipe_context* pipe, unsigned mode,
 211                          unsigned start, unsigned count)
 212 {
 213     struct r300_context* r300 = r300_context(pipe);
 214
 215     if (!u_trim_pipe_prim(mode, &count)) {
 216         return FALSE;
 217     }
 218
 219     if (count > 65535) {
 220         return FALSE;
 221     }
 222
 223     r300_update_derived_state(r300);
 224
 225     if (!r300_setup_vertex_buffers(r300)) {
 226         return FALSE;
 227     }
 228
 229     setup_vertex_attributes(r300);
 230
 231     r300_emit_dirty_state(r300);
 232
 233     r300_emit_aos(r300, start);
 234
 235     r300_emit_draw_arrays(r300, mode, count);
 236
 237     return TRUE;
 238 }
 239
 240 /****************************************************************************
 241  * The rest of this file is for SW TCL rendering only. Please be polite and *
 242  * keep these functions separated so that they are easier to locate. ~C.    *
 243  ***************************************************************************/
 244
 245 /* Draw-based drawing for SW TCL chipsets.
 246  * XXX currently broken as fucking hell. */
 247 boolean r300_swtcl_draw_range_elements(struct pipe_context* pipe,
 248                                        struct pipe_buffer* indexBuffer,
 249                                        unsigned indexSize,
 250                                        unsigned minIndex,
 251                                        unsigned maxIndex,
 252                                        unsigned mode,
 253                                        unsigned start,
 254                                        unsigned count)
 255 {
 256     assert(0);
 257 #if 0
 258     struct r300_context* r300 = r300_context(pipe);
 259     int i;
 260
 261     if (!u_trim_pipe_prim(mode, &count)) {
 262         return FALSE;
 263     }
 264
 265     for (i = 0; i < r300->vertex_buffer_count; i++) {
 266         void* buf = pipe_buffer_map(pipe->screen,
 267                                     r300->vertex_buffers[i].buffer,
 268                                     PIPE_BUFFER_USAGE_CPU_READ);
 269         draw_set_mapped_vertex_buffer(r300->draw, i, buf);
 270     }
 271
 272     if (indexBuffer) {
 273         void* indices = pipe_buffer_map(pipe->screen, indexBuffer,
 274                                         PIPE_BUFFER_USAGE_CPU_READ);
 275         draw_set_mapped_element_buffer_range(r300->draw, indexSize,
 276                                              minIndex, maxIndex, indices);
 277     } else {
 278         draw_set_mapped_element_buffer(r300->draw, 0, NULL);
 279     }
 280
 281     draw_set_mapped_constant_buffer(r300->draw,
 282             r300->shader_constants[PIPE_SHADER_VERTEX].constants,
 283             r300->shader_constants[PIPE_SHADER_VERTEX].count *
 284                 (sizeof(float) * 4));
 285
 286     draw_arrays(r300->draw, mode, start, count);
 287
 288     for (i = 0; i < r300->vertex_buffer_count; i++) {
 289         pipe_buffer_unmap(pipe->screen, r300->vertex_buffers[i].buffer);
 290         draw_set_mapped_vertex_buffer(r300->draw, i, NULL);
 291     }
 292
 293     if (indexBuffer) {
 294         pipe_buffer_unmap(pipe->screen, indexBuffer);
 295         draw_set_mapped_element_buffer_range(r300->draw, 0, start,
 296                                              start + count - 1, NULL);
 297     }
 298 #endif
 299     return TRUE;
 300 }
 301
 302 /* Object for rendering using Draw. */
 303 struct r300_render {
 304     /* Parent class */
 305     struct vbuf_render base;
 306
 307     /* Pipe context */
 308     struct r300_context* r300;
 309
 310     /* Vertex information */
 311     size_t vertex_size;
 312     unsigned prim;
 313     unsigned hwprim;
 314
 315     /* VBO */
 316     struct pipe_buffer* vbo;
 317     size_t vbo_size;
 318     size_t vbo_offset;
 319     size_t vbo_max_used;
 320     void * vbo_ptr;
 321 };
 322
 323 static INLINE struct r300_render*
 324 r300_render(struct vbuf_render* render)
 325 {
 326     return (struct r300_render*)render;
 327 }
 328
 329 static const struct vertex_info*
 330 r300_render_get_vertex_info(struct vbuf_render* render)
 331 {
 332     struct r300_render* r300render = r300_render(render);
 333     struct r300_context* r300 = r300render->r300;
 334
 335     r300_update_derived_state(r300);
 336
 337     return &r300->vertex_info->vinfo;
 338 }
 339
 340 static boolean r300_render_allocate_vertices(struct vbuf_render* render,
 341                                                    ushort vertex_size,
 342                                                    ushort count)
 343 {
 344     struct r300_render* r300render = r300_render(render);
 345     struct r300_context* r300 = r300render->r300;
 346     struct pipe_screen* screen = r300->context.screen;
 347     size_t size = (size_t)vertex_size * (size_t)count;
 348
 349     if (size + r300render->vbo_offset > r300render->vbo_size)
 350     {
 351         pipe_buffer_reference(&r300->vbo, NULL);
 352         r300render->vbo = pipe_buffer_create(screen,
 353                                              64,
 354                                              PIPE_BUFFER_USAGE_VERTEX,
 355                                              R300_MAX_VBO_SIZE);
 356         r300render->vbo_offset = 0;
 357         r300render->vbo_size = R300_MAX_VBO_SIZE;
 358     }
 359
 360     r300render->vertex_size = vertex_size;
 361     r300->vbo = r300render->vbo;
 362     r300->vbo_offset = r300render->vbo_offset;
 363
 364     return (r300render->vbo) ? TRUE : FALSE;
 365 }
 366
 367 static void* r300_render_map_vertices(struct vbuf_render* render)
 368 {
 369     struct r300_render* r300render = r300_render(render);
 370     struct pipe_screen* screen = r300render->r300->context.screen;
 371
 372     r300render->vbo_ptr = pipe_buffer_map(screen, r300render->vbo,
 373                                           PIPE_BUFFER_USAGE_CPU_WRITE);
 374
 375     return (r300render->vbo_ptr + r300render->vbo_offset);
 376 }
 377
 378 static void r300_render_unmap_vertices(struct vbuf_render* render,
 379                                              ushort min,
 380                                              ushort max)
 381 {
 382     struct r300_render* r300render = r300_render(render);
 383     struct pipe_screen* screen = r300render->r300->context.screen;
 384     CS_LOCALS(r300render->r300);
 385     BEGIN_CS(2);
 386     OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX, max);
 387     END_CS;
 388
 389     r300render->vbo_max_used = MAX2(r300render->vbo_max_used,
 390                                     r300render->vertex_size * (max + 1));
 391     pipe_buffer_unmap(screen, r300render->vbo);
 392 }
 393
 394 static void r300_render_release_vertices(struct vbuf_render* render)
 395 {
 396     struct r300_render* r300render = r300_render(render);
 397
 398     r300render->vbo_offset += r300render->vbo_max_used;
 399     r300render->vbo_max_used = 0;
 400 }
 401
 402 static boolean r300_render_set_primitive(struct vbuf_render* render,
 403                                                unsigned prim)
 404 {
 405     struct r300_render* r300render = r300_render(render);
 406
 407     r300render->prim = prim;
 408     r300render->hwprim = r300_translate_primitive(prim);
 409
 410     return TRUE;
 411 }
 412
 413 static void r300_render_draw_arrays(struct vbuf_render* render,
 414                                           unsigned start,
 415                                           unsigned count)
 416 {
 417     struct r300_render* r300render = r300_render(render);
 418     struct r300_context* r300 = r300render->r300;
 419
 420     CS_LOCALS(r300);
 421
 422     r300_emit_dirty_state(r300);
 423
 424     DBG(r300, DBG_DRAW, "r300: Doing vbuf render, count %d\n", count);
 425
 426     BEGIN_CS(2);
 427     OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2, 0);
 428     OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) |
 429            r300render->hwprim);
 430     END_CS;
 431 }
 432
 433 static void r300_render_draw(struct vbuf_render* render,
 434                                    const ushort* indices,
 435                                    uint count)
 436 {
 437     struct r300_render* r300render = r300_render(render);
 438     struct r300_context* r300 = r300render->r300;
 439     int i;
 440
 441     CS_LOCALS(r300);
 442
 443     r300_emit_dirty_state(r300);
 444
 445     BEGIN_CS(2 + (count+1)/2);
 446     OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, (count+1)/2);
 447     OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) |
 448            r300render->hwprim);
 449     for (i = 0; i < count-1; i += 2) {
 450         OUT_CS(indices[i+1] << 16 | indices[i]);
 451     }
 452     if (count % 2) {
 453         OUT_CS(indices[count-1]);
 454     }
 455     END_CS;
 456 }
 457
 458 static void r300_render_destroy(struct vbuf_render* render)
 459 {
 460     FREE(render);
 461 }
 462
 463 static struct vbuf_render* r300_render_create(struct r300_context* r300)
 464 {
 465     struct r300_render* r300render = CALLOC_STRUCT(r300_render);
 466
 467     r300render->r300 = r300;
 468
 469     /* XXX find real numbers plz */
 470     r300render->base.max_vertex_buffer_bytes = 128 * 1024;
 471     r300render->base.max_indices = 16 * 1024;
 472
 473     r300render->base.get_vertex_info = r300_render_get_vertex_info;
 474     r300render->base.allocate_vertices = r300_render_allocate_vertices;
 475     r300render->base.map_vertices = r300_render_map_vertices;
 476     r300render->base.unmap_vertices = r300_render_unmap_vertices;
 477     r300render->base.set_primitive = r300_render_set_primitive;
 478     r300render->base.draw = r300_render_draw;
 479     r300render->base.draw_arrays = r300_render_draw_arrays;
 480     r300render->base.release_vertices = r300_render_release_vertices;
 481     r300render->base.destroy = r300_render_destroy;
 482
 483     r300render->vbo = NULL;
 484     r300render->vbo_size = 0;
 485     r300render->vbo_offset = 0;
 486
 487     return &r300render->base;
 488 }
 489
 490 struct draw_stage* r300_draw_stage(struct r300_context* r300)
 491 {
 492     struct vbuf_render* render;
 493     struct draw_stage* stage;
 494
 495     render = r300_render_create(r300);
 496
 497     if (!render) {
 498         return NULL;
 499     }
 500
 501     stage = draw_vbuf_stage(r300->draw, render);
 502
 503     if (!stage) {
 504         render->destroy(render);
 505         return NULL;
 506     }
 507
 508     draw_set_render(r300->draw, render);
 509
 510     return stage;
 511 }