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
  41 /* r300_render: Vertex and index buffer primitive emission. */
  42 #define R300_MAX_VBO_SIZE  (1024 * 1024)
  43
  44 uint32_t r300_translate_primitive(unsigned prim)
  45 {
  46     switch (prim) {
  47         case PIPE_PRIM_POINTS:
  48             return R300_VAP_VF_CNTL__PRIM_POINTS;
  49         case PIPE_PRIM_LINES:
  50             return R300_VAP_VF_CNTL__PRIM_LINES;
  51         case PIPE_PRIM_LINE_LOOP:
  52             return R300_VAP_VF_CNTL__PRIM_LINE_LOOP;
  53         case PIPE_PRIM_LINE_STRIP:
  54             return R300_VAP_VF_CNTL__PRIM_LINE_STRIP;
  55         case PIPE_PRIM_TRIANGLES:
  56             return R300_VAP_VF_CNTL__PRIM_TRIANGLES;
  57         case PIPE_PRIM_TRIANGLE_STRIP:
  58             return R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP;
  59         case PIPE_PRIM_TRIANGLE_FAN:
  60             return R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN;
  61         case PIPE_PRIM_QUADS:
  62             return R300_VAP_VF_CNTL__PRIM_QUADS;
  63         case PIPE_PRIM_QUAD_STRIP:
  64             return R300_VAP_VF_CNTL__PRIM_QUAD_STRIP;
  65         case PIPE_PRIM_POLYGON:
  66             return R300_VAP_VF_CNTL__PRIM_POLYGON;
  67         default:
  68             return 0;
  69     }
  70 }
  71
  72 /* This is the fast-path drawing & emission for HW TCL. */
  73 boolean r300_draw_range_elements(struct pipe_context* pipe,
  74                                  struct pipe_buffer* indexBuffer,
  75                                  unsigned indexSize,
  76                                  unsigned minIndex,
  77                                  unsigned maxIndex,
  78                                  unsigned mode,
  79                                  unsigned start,
  80                                  unsigned count)
  81 {
  82     struct r300_context* r300 = r300_context(pipe);
  83     uint32_t prim = r300_translate_primitive(mode);
  84     struct pipe_vertex_buffer* aos = r300->vertex_buffers;
  85     unsigned aos_count = r300->vertex_buffer_count;
  86     short* indices;
  87     unsigned packet_size;
  88     unsigned i;
  89     bool invalid = FALSE;
  90
  91     CS_LOCALS(r300);
  92
  93     if (!u_trim_pipe_prim(mode, &count)) {
  94         return FALSE;
  95     }
  96
  97 validate:
  98     for (i = 0; i < aos_count; i++) {
  99         if (!r300->winsys->add_buffer(r300->winsys, aos[i].buffer,
 100                     RADEON_GEM_DOMAIN_GTT, 0)) {
 101             pipe->flush(pipe, 0, NULL);
 102             goto validate;
 103         }
 104     }
 105     if (!r300->winsys->validate(r300->winsys)) {
 106         pipe->flush(pipe, 0, NULL);
 107         if (invalid) {
 108             /* Well, hell. */
 109             debug_printf("r300: Stuck in validation loop, gonna quit now.");
 110             exit(1);
 111         }
 112         invalid = TRUE;
 113         goto validate;
 114     }
 115
 116     r300_emit_dirty_state(r300);
 117
 118     packet_size = (aos_count >> 1) * 3 + (aos_count & 1) * 2;
 119
 120     BEGIN_CS(3 + packet_size + (aos_count * 2));
 121     OUT_CS_PKT3(R300_PACKET3_3D_LOAD_VBPNTR, packet_size);
 122     OUT_CS(aos_count);
 123     for (i = 0; i < aos_count - 1; i += 2) {
 124         OUT_CS(aos[i].stride |
 125             (aos[i].stride << 8) |
 126             (aos[i + 1].stride << 16) |
 127             (aos[i + 1].stride << 24));
 128         OUT_CS(aos[i].buffer_offset + start * 4 * aos[i].stride);
 129         OUT_CS(aos[i + 1].buffer_offset + start * 4 * aos[i + 1].stride);
 130     }
 131     if (aos_count & 1) {
 132         OUT_CS(aos[i].stride | (aos[i].stride << 8));
 133         OUT_CS(aos[i].buffer_offset + start * 4 * aos[i].stride);
 134     }
 135     for (i = 0; i < aos_count; i++) {
 136         OUT_CS_RELOC(aos[i].buffer, 0, RADEON_GEM_DOMAIN_GTT, 0, 0);
 137     }
 138     END_CS;
 139
 140     if (indexBuffer) {
 141         indices = (short*)pipe_buffer_map(pipe->screen, indexBuffer,
 142                                           PIPE_BUFFER_USAGE_CPU_READ);
 143
 144         /* Set the starting point. */
 145         indices += start;
 146
 147         BEGIN_CS(2 + (count+1)/2);
 148         OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, (count + 1)/2);
 149         OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) | prim);
 150         for (i = 0; i < count - 1; i += 2) {
 151             OUT_CS(indices[i + 1] << 16 | indices[i]);
 152         }
 153         if (count % 2) {
 154             OUT_CS(indices[count - 1]);
 155         }
 156         END_CS;
 157     } else {
 158         BEGIN_CS(2);
 159         OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2, 0);
 160         OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) |
 161                prim);
 162         END_CS;
 163     }
 164
 165     return TRUE;
 166 }
 167
 168 /* Simple helpers for context setup. Should probably be moved to util. */
 169 boolean r300_draw_elements(struct pipe_context* pipe,
 170                            struct pipe_buffer* indexBuffer,
 171                            unsigned indexSize, unsigned mode,
 172                            unsigned start, unsigned count)
 173 {
 174     return pipe->draw_range_elements(pipe, indexBuffer, indexSize, 0, ~0,
 175                                      mode, start, count);
 176 }
 177
 178 boolean r300_draw_arrays(struct pipe_context* pipe, unsigned mode,
 179                          unsigned start, unsigned count)
 180 {
 181     return pipe->draw_elements(pipe, NULL, 0, mode, start, count);
 182 }
 183
 184 /****************************************************************************
 185  * The rest of this file is for SW TCL rendering only. Please be polite and *
 186  * keep these functions separated so that they are easier to locate. ~C.    *
 187  ***************************************************************************/
 188
 189 /* Draw-based drawing for SW TCL chipsets. */
 190 boolean r300_swtcl_draw_range_elements(struct pipe_context* pipe,
 191                                        struct pipe_buffer* indexBuffer,
 192                                        unsigned indexSize,
 193                                        unsigned minIndex,
 194                                        unsigned maxIndex,
 195                                        unsigned mode,
 196                                        unsigned start,
 197                                        unsigned count)
 198 {
 199     struct r300_context* r300 = r300_context(pipe);
 200     int i;
 201
 202     if (!u_trim_pipe_prim(mode, &count)) {
 203         return FALSE;
 204     }
 205
 206     for (i = 0; i < r300->vertex_buffer_count; i++) {
 207         void* buf = pipe_buffer_map(pipe->screen,
 208                                     r300->vertex_buffers[i].buffer,
 209                                     PIPE_BUFFER_USAGE_CPU_READ);
 210         draw_set_mapped_vertex_buffer(r300->draw, i, buf);
 211     }
 212
 213     if (indexBuffer) {
 214         void* indices = pipe_buffer_map(pipe->screen, indexBuffer,
 215                                         PIPE_BUFFER_USAGE_CPU_READ);
 216         draw_set_mapped_element_buffer_range(r300->draw, indexSize,
 217                                              minIndex, maxIndex, indices);
 218     } else {
 219         draw_set_mapped_element_buffer(r300->draw, 0, NULL);
 220     }
 221
 222     draw_set_mapped_constant_buffer(r300->draw,
 223             r300->shader_constants[PIPE_SHADER_VERTEX].constants,
 224             r300->shader_constants[PIPE_SHADER_VERTEX].count *
 225                 (sizeof(float) * 4));
 226
 227     draw_arrays(r300->draw, mode, start, count);
 228
 229     for (i = 0; i < r300->vertex_buffer_count; i++) {
 230         pipe_buffer_unmap(pipe->screen, r300->vertex_buffers[i].buffer);
 231         draw_set_mapped_vertex_buffer(r300->draw, i, NULL);
 232     }
 233
 234     if (indexBuffer) {
 235         pipe_buffer_unmap(pipe->screen, indexBuffer);
 236         draw_set_mapped_element_buffer_range(r300->draw, 0, start,
 237                                              start + count - 1, NULL);
 238     }
 239
 240     return TRUE;
 241 }
 242
 243 /* Object for rendering using Draw. */
 244 struct r300_render {
 245     /* Parent class */
 246     struct vbuf_render base;
 247
 248     /* Pipe context */
 249     struct r300_context* r300;
 250
 251     /* Vertex information */
 252     size_t vertex_size;
 253     unsigned prim;
 254     unsigned hwprim;
 255
 256     /* VBO */
 257     struct pipe_buffer* vbo;
 258     size_t vbo_size;
 259     size_t vbo_offset;
 260     size_t vbo_max_used;
 261     void * vbo_ptr;
 262 };
 263
 264 static INLINE struct r300_render*
 265 r300_render(struct vbuf_render* render)
 266 {
 267     return (struct r300_render*)render;
 268 }
 269
 270 static const struct vertex_info*
 271 r300_render_get_vertex_info(struct vbuf_render* render)
 272 {
 273     struct r300_render* r300render = r300_render(render);
 274     struct r300_context* r300 = r300render->r300;
 275
 276     r300_update_derived_state(r300);
 277
 278     return &r300->vertex_info->vinfo;
 279 }
 280
 281 static boolean r300_render_allocate_vertices(struct vbuf_render* render,
 282                                                    ushort vertex_size,
 283                                                    ushort count)
 284 {
 285     struct r300_render* r300render = r300_render(render);
 286     struct r300_context* r300 = r300render->r300;
 287     struct pipe_screen* screen = r300->context.screen;
 288     size_t size = (size_t)vertex_size * (size_t)count;
 289
 290     if (size + r300render->vbo_offset > r300render->vbo_size)
 291     {
 292         pipe_buffer_reference(&r300->vbo, NULL);
 293         r300render->vbo = pipe_buffer_create(screen,
 294                                              64,
 295                                              PIPE_BUFFER_USAGE_VERTEX,
 296                                              R300_MAX_VBO_SIZE);
 297         r300render->vbo_offset = 0;
 298         r300render->vbo_size = R300_MAX_VBO_SIZE;
 299     }
 300
 301     r300render->vertex_size = vertex_size;
 302     r300->vbo = r300render->vbo;
 303     r300->vbo_offset = r300render->vbo_offset;
 304
 305     return (r300render->vbo) ? TRUE : FALSE;
 306 }
 307
 308 static void* r300_render_map_vertices(struct vbuf_render* render)
 309 {
 310     struct r300_render* r300render = r300_render(render);
 311     struct pipe_screen* screen = r300render->r300->context.screen;
 312
 313     r300render->vbo_ptr = pipe_buffer_map(screen, r300render->vbo,
 314                                           PIPE_BUFFER_USAGE_CPU_WRITE);
 315
 316     return (r300render->vbo_ptr + r300render->vbo_offset);
 317 }
 318
 319 static void r300_render_unmap_vertices(struct vbuf_render* render,
 320                                              ushort min,
 321                                              ushort max)
 322 {
 323     struct r300_render* r300render = r300_render(render);
 324     struct pipe_screen* screen = r300render->r300->context.screen;
 325     CS_LOCALS(r300render->r300);
 326     BEGIN_CS(2);
 327     OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX, max);
 328     END_CS;
 329
 330     r300render->vbo_max_used = MAX2(r300render->vbo_max_used,
 331                                     r300render->vertex_size * (max + 1));
 332     pipe_buffer_unmap(screen, r300render->vbo);
 333 }
 334
 335 static void r300_render_release_vertices(struct vbuf_render* render)
 336 {
 337     struct r300_render* r300render = r300_render(render);
 338
 339     r300render->vbo_offset += r300render->vbo_max_used;
 340     r300render->vbo_max_used = 0;
 341 }
 342
 343 static boolean r300_render_set_primitive(struct vbuf_render* render,
 344                                                unsigned prim)
 345 {
 346     struct r300_render* r300render = r300_render(render);
 347
 348     r300render->prim = prim;
 349     r300render->hwprim = r300_translate_primitive(prim);
 350
 351     return TRUE;
 352 }
 353
 354 static void r300_render_draw_arrays(struct vbuf_render* render,
 355                                           unsigned start,
 356                                           unsigned count)
 357 {
 358     struct r300_render* r300render = r300_render(render);
 359     struct r300_context* r300 = r300render->r300;
 360
 361     CS_LOCALS(r300);
 362
 363     r300_emit_dirty_state(r300);
 364
 365     DBG(r300, DBG_DRAW, "r300: Doing vbuf render, count %d\n", count);
 366
 367     BEGIN_CS(2);
 368     OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2, 0);
 369     OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) |
 370            r300render->hwprim);
 371     END_CS;
 372 }
 373
 374 static void r300_render_draw(struct vbuf_render* render,
 375                                    const ushort* indices,
 376                                    uint count)
 377 {
 378     struct r300_render* r300render = r300_render(render);
 379     struct r300_context* r300 = r300render->r300;
 380     int i;
 381
 382     CS_LOCALS(r300);
 383
 384     r300_emit_dirty_state(r300);
 385
 386     BEGIN_CS(2 + (count+1)/2);
 387     OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, (count+1)/2);
 388     OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) |
 389            r300render->hwprim);
 390     for (i = 0; i < count-1; i += 2) {
 391         OUT_CS(indices[i+1] << 16 | indices[i]);
 392     }
 393     if (count % 2) {
 394         OUT_CS(indices[count-1]);
 395     }
 396     END_CS;
 397 }
 398
 399 static void r300_render_destroy(struct vbuf_render* render)
 400 {
 401     FREE(render);
 402 }
 403
 404 static struct vbuf_render* r300_render_create(struct r300_context* r300)
 405 {
 406     struct r300_render* r300render = CALLOC_STRUCT(r300_render);
 407
 408     r300render->r300 = r300;
 409
 410     /* XXX find real numbers plz */
 411     r300render->base.max_vertex_buffer_bytes = 128 * 1024;
 412     r300render->base.max_indices = 16 * 1024;
 413
 414     r300render->base.get_vertex_info = r300_render_get_vertex_info;
 415     r300render->base.allocate_vertices = r300_render_allocate_vertices;
 416     r300render->base.map_vertices = r300_render_map_vertices;
 417     r300render->base.unmap_vertices = r300_render_unmap_vertices;
 418     r300render->base.set_primitive = r300_render_set_primitive;
 419     r300render->base.draw = r300_render_draw;
 420     r300render->base.draw_arrays = r300_render_draw_arrays;
 421     r300render->base.release_vertices = r300_render_release_vertices;
 422     r300render->base.destroy = r300_render_destroy;
 423
 424     r300render->vbo = NULL;
 425     r300render->vbo_size = 0;
 426     r300render->vbo_offset = 0;
 427
 428     return &r300render->base;
 429 }
 430
 431 struct draw_stage* r300_draw_stage(struct r300_context* r300)
 432 {
 433     struct vbuf_render* render;
 434     struct draw_stage* stage;
 435
 436     render = r300_render_create(r300);
 437
 438     if (!render) {
 439         return NULL;
 440     }
 441
 442     stage = draw_vbuf_stage(r300->draw, render);
 443
 444     if (!stage) {
 445         render->destroy(render);
 446         return NULL;
 447     }
 448
 449     draw_set_render(r300->draw, render);
 450
 451     return stage;
 452 }