src/gallium/drivers/llvmpipe/lp_rast_priv.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #ifndef LP_RAST_PRIV_H
  29 #define LP_RAST_PRIV_H
  30
  31 #include "util/format/u_format.h"
  32 #include "util/u_thread.h"
  33 #include "gallivm/lp_bld_debug.h"
  34 #include "lp_memory.h"
  35 #include "lp_rast.h"
  36 #include "lp_scene.h"
  37 #include "lp_state.h"
  38 #include "lp_texture.h"
  39 #include "lp_limits.h"
  40
  41
  42 #define TILE_VECTOR_HEIGHT 4
  43 #define TILE_VECTOR_WIDTH 4
  44
  45 /* If we crash in a jitted function, we can examine jit_line and jit_state
  46  * to get some info.  This is not thread-safe, however.
  47  */
  48 #ifdef DEBUG
  49
  50 struct lp_rasterizer_task;
  51 extern int jit_line;
  52 extern const struct lp_rast_state *jit_state;
  53 extern const struct lp_rasterizer_task *jit_task;
  54
  55 #define BEGIN_JIT_CALL(state, task)                  \
  56    do { \
  57       jit_line = __LINE__; \
  58       jit_state = state; \
  59       jit_task = task; \
  60    } while (0)
  61
  62 #define END_JIT_CALL() \
  63    do { \
  64       jit_line = 0; \
  65       jit_state = NULL; \
  66    } while (0)
  67
  68 #else
  69
  70 #define BEGIN_JIT_CALL(X, Y)
  71 #define END_JIT_CALL()
  72
  73 #endif
  74
  75
  76 struct lp_rasterizer;
  77 struct cmd_bin;
  78
  79 /**
  80  * Per-thread rasterization state
  81  */
  82 struct lp_rasterizer_task
  83 {
  84    const struct cmd_bin *bin;
  85    const struct lp_rast_state *state;
  86
  87    struct lp_scene *scene;
  88    unsigned x, y;          /**< Pos of this tile in framebuffer, in pixels */
  89    unsigned width, height; /**< width, height of current tile, in pixels */
  90
  91    uint8_t *color_tiles[PIPE_MAX_COLOR_BUFS];
  92    uint8_t *depth_tile;
  93
  94    /** "back" pointer */
  95    struct lp_rasterizer *rast;
  96
  97    /** "my" index */
  98    unsigned thread_index;
  99
 100    /** Non-interpolated passthru state and occlude counter for visible pixels */
 101    struct lp_jit_thread_data thread_data;
 102
 103    pipe_semaphore work_ready;
 104    pipe_semaphore work_done;
 105 };
 106
 107
 108 /**
 109  * This is the state required while rasterizing tiles.
 110  * Note that this contains per-thread information too.
 111  * The tile size is TILE_SIZE x TILE_SIZE pixels.
 112  */
 113 struct lp_rasterizer
 114 {
 115    boolean exit_flag;
 116    boolean no_rast;  /**< For debugging/profiling */
 117
 118    /** The incoming queue of scenes ready to rasterize */
 119    struct lp_scene_queue *full_scenes;
 120
 121    /** The scene currently being rasterized by the threads */
 122    struct lp_scene *curr_scene;
 123
 124    /** A task object for each rasterization thread */
 125    struct lp_rasterizer_task tasks[LP_MAX_THREADS];
 126
 127    unsigned num_threads;
 128    thrd_t threads[LP_MAX_THREADS];
 129
 130    /** For synchronizing the rasterization threads */
 131    util_barrier barrier;
 132 };
 133
 134 void
 135 lp_rast_shade_quads_mask_sample(struct lp_rasterizer_task *task,
 136                                 const struct lp_rast_shader_inputs *inputs,
 137                                 unsigned x, unsigned y,
 138                                 uint64_t mask);
 139 void
 140 lp_rast_shade_quads_mask(struct lp_rasterizer_task *task,
 141                          const struct lp_rast_shader_inputs *inputs,
 142                          unsigned x, unsigned y,
 143                          unsigned mask);
 144
 145
 146 /**
 147  * Get the pointer to a 4x4 color block (within a 64x64 tile).
 148  * \param x, y location of 4x4 block in window coords
 149  */
 150 static inline uint8_t *
 151 lp_rast_get_color_block_pointer(struct lp_rasterizer_task *task,
 152                                 unsigned buf, unsigned x, unsigned y,
 153                                 unsigned layer)
 154 {
 155    unsigned px, py, pixel_offset;
 156    uint8_t *color;
 157
 158    assert(x < task->scene->tiles_x * TILE_SIZE);
 159    assert(y < task->scene->tiles_y * TILE_SIZE);
 160    assert((x % TILE_VECTOR_WIDTH) == 0);
 161    assert((y % TILE_VECTOR_HEIGHT) == 0);
 162    assert(buf < task->scene->fb.nr_cbufs);
 163
 164    assert(task->color_tiles[buf]);
 165
 166    /*
 167     * We don't actually benefit from having per tile cbuf/zsbuf pointers,
 168     * it's just extra work - the mul/add would be exactly the same anyway.
 169     * Fortunately the extra work (modulo) here is very cheap at least...
 170     */
 171    px = x % TILE_SIZE;
 172    py = y % TILE_SIZE;
 173
 174    pixel_offset = px * task->scene->cbufs[buf].format_bytes +
 175                   py * task->scene->cbufs[buf].stride;
 176    color = task->color_tiles[buf] + pixel_offset;
 177
 178    if (layer) {
 179       color += layer * task->scene->cbufs[buf].layer_stride;
 180    }
 181
 182    assert(lp_check_alignment(color, llvmpipe_get_format_alignment(task->scene->fb.cbufs[buf]->format)));
 183    return color;
 184 }
 185
 186
 187 /**
 188  * Get the pointer to a 4x4 depth block (within a 64x64 tile).
 189  * \param x, y location of 4x4 block in window coords
 190  */
 191 static inline uint8_t *
 192 lp_rast_get_depth_block_pointer(struct lp_rasterizer_task *task,
 193                                 unsigned x, unsigned y, unsigned layer)
 194 {
 195    unsigned px, py, pixel_offset;
 196    uint8_t *depth;
 197
 198    assert(x < task->scene->tiles_x * TILE_SIZE);
 199    assert(y < task->scene->tiles_y * TILE_SIZE);
 200    assert((x % TILE_VECTOR_WIDTH) == 0);
 201    assert((y % TILE_VECTOR_HEIGHT) == 0);
 202
 203    assert(task->depth_tile);
 204
 205    px = x % TILE_SIZE;
 206    py = y % TILE_SIZE;
 207
 208    pixel_offset = px * task->scene->zsbuf.format_bytes +
 209                   py * task->scene->zsbuf.stride;
 210    depth = task->depth_tile + pixel_offset;
 211
 212    if (layer) {
 213       depth += layer * task->scene->zsbuf.layer_stride;
 214    }
 215
 216    assert(lp_check_alignment(depth, llvmpipe_get_format_alignment(task->scene->fb.zsbuf->format)));
 217    return depth;
 218 }
 219
 220
 221
 222 /**
 223  * Shade all pixels in a 4x4 block.  The fragment code omits the
 224  * triangle in/out tests.
 225  * \param x, y location of 4x4 block in window coords
 226  */
 227 static inline void
 228 lp_rast_shade_quads_all( struct lp_rasterizer_task *task,
 229                          const struct lp_rast_shader_inputs *inputs,
 230                          unsigned x, unsigned y )
 231 {
 232    const struct lp_scene *scene = task->scene;
 233    const struct lp_rast_state *state = task->state;
 234    struct lp_fragment_shader_variant *variant = state->variant;
 235    uint8_t *color[PIPE_MAX_COLOR_BUFS];
 236    unsigned stride[PIPE_MAX_COLOR_BUFS];
 237    unsigned sample_stride[PIPE_MAX_COLOR_BUFS];
 238    uint8_t *depth = NULL;
 239    unsigned depth_stride = 0;
 240    unsigned depth_sample_stride = 0;
 241    unsigned i;
 242
 243    /* color buffer */
 244    for (i = 0; i < scene->fb.nr_cbufs; i++) {
 245       if (scene->fb.cbufs[i]) {
 246          stride[i] = scene->cbufs[i].stride;
 247          sample_stride[i] = scene->cbufs[i].sample_stride;
 248          color[i] = lp_rast_get_color_block_pointer(task, i, x, y,
 249                                                     inputs->layer);
 250       }
 251       else {
 252          stride[i] = 0;
 253          sample_stride[i] = 0;
 254          color[i] = NULL;
 255       }
 256    }
 257
 258    if (scene->zsbuf.map) {
 259       depth = lp_rast_get_depth_block_pointer(task, x, y, inputs->layer);
 260       depth_sample_stride = scene->zsbuf.sample_stride;
 261       depth_stride = scene->zsbuf.stride;
 262    }
 263
 264    uint64_t mask = 0;
 265    for (unsigned i = 0; i < scene->fb_max_samples; i++)
 266       mask |= (uint64_t)0xffff << (16 * i);
 267
 268    /*
 269     * The rasterizer may produce fragments outside our
 270     * allocated 4x4 blocks hence need to filter them out here.
 271     */
 272    if ((x % TILE_SIZE) < task->width && (y % TILE_SIZE) < task->height) {
 273       /* Propagate non-interpolated raster state. */
 274       task->thread_data.raster_state.viewport_index = inputs->viewport_index;
 275
 276       /* run shader on 4x4 block */
 277       BEGIN_JIT_CALL(state, task);
 278       variant->jit_function[RAST_WHOLE]( &state->jit_context,
 279                                          x, y,
 280                                          inputs->frontfacing,
 281                                          GET_A0(inputs),
 282                                          GET_DADX(inputs),
 283                                          GET_DADY(inputs),
 284                                          color,
 285                                          depth,
 286                                          mask,
 287                                          &task->thread_data,
 288                                          stride,
 289                                          depth_stride,
 290                                          sample_stride,
 291                                          depth_sample_stride);
 292       END_JIT_CALL();
 293    }
 294 }
 295
 296 void lp_rast_triangle_1( struct lp_rasterizer_task *,
 297                          const union lp_rast_cmd_arg );
 298 void lp_rast_triangle_2( struct lp_rasterizer_task *,
 299                          const union lp_rast_cmd_arg );
 300 void lp_rast_triangle_3( struct lp_rasterizer_task *,
 301                          const union lp_rast_cmd_arg );
 302 void lp_rast_triangle_4( struct lp_rasterizer_task *,
 303                          const union lp_rast_cmd_arg );
 304 void lp_rast_triangle_5( struct lp_rasterizer_task *,
 305                          const union lp_rast_cmd_arg );
 306 void lp_rast_triangle_6( struct lp_rasterizer_task *,
 307                          const union lp_rast_cmd_arg );
 308 void lp_rast_triangle_7( struct lp_rasterizer_task *,
 309                          const union lp_rast_cmd_arg );
 310 void lp_rast_triangle_8( struct lp_rasterizer_task *,
 311                          const union lp_rast_cmd_arg );
 312
 313 void lp_rast_triangle_3_4(struct lp_rasterizer_task *,
 314                           const union lp_rast_cmd_arg );
 315
 316 void lp_rast_triangle_3_16( struct lp_rasterizer_task *,
 317                             const union lp_rast_cmd_arg );
 318
 319 void lp_rast_triangle_4_16( struct lp_rasterizer_task *,
 320                             const union lp_rast_cmd_arg );
 321
 322
 323 void lp_rast_triangle_32_1( struct lp_rasterizer_task *,
 324                          const union lp_rast_cmd_arg );
 325 void lp_rast_triangle_32_2( struct lp_rasterizer_task *,
 326                          const union lp_rast_cmd_arg );
 327 void lp_rast_triangle_32_3( struct lp_rasterizer_task *,
 328                          const union lp_rast_cmd_arg );
 329 void lp_rast_triangle_32_4( struct lp_rasterizer_task *,
 330                          const union lp_rast_cmd_arg );
 331 void lp_rast_triangle_32_5( struct lp_rasterizer_task *,
 332                          const union lp_rast_cmd_arg );
 333 void lp_rast_triangle_32_6( struct lp_rasterizer_task *,
 334                          const union lp_rast_cmd_arg );
 335 void lp_rast_triangle_32_7( struct lp_rasterizer_task *,
 336                          const union lp_rast_cmd_arg );
 337 void lp_rast_triangle_32_8( struct lp_rasterizer_task *,
 338                          const union lp_rast_cmd_arg );
 339
 340 void lp_rast_triangle_32_3_4(struct lp_rasterizer_task *,
 341                           const union lp_rast_cmd_arg );
 342
 343 void lp_rast_triangle_32_3_16( struct lp_rasterizer_task *,
 344                             const union lp_rast_cmd_arg );
 345
 346 void lp_rast_triangle_32_4_16( struct lp_rasterizer_task *,
 347                             const union lp_rast_cmd_arg );
 348
 349 void lp_rast_triangle_ms_1( struct lp_rasterizer_task *,
 350                          const union lp_rast_cmd_arg );
 351 void lp_rast_triangle_ms_2( struct lp_rasterizer_task *,
 352                          const union lp_rast_cmd_arg );
 353 void lp_rast_triangle_ms_3( struct lp_rasterizer_task *,
 354                          const union lp_rast_cmd_arg );
 355 void lp_rast_triangle_ms_4( struct lp_rasterizer_task *,
 356                          const union lp_rast_cmd_arg );
 357 void lp_rast_triangle_ms_5( struct lp_rasterizer_task *,
 358                          const union lp_rast_cmd_arg );
 359 void lp_rast_triangle_ms_6( struct lp_rasterizer_task *,
 360                          const union lp_rast_cmd_arg );
 361 void lp_rast_triangle_ms_7( struct lp_rasterizer_task *,
 362                          const union lp_rast_cmd_arg );
 363 void lp_rast_triangle_ms_8( struct lp_rasterizer_task *,
 364                          const union lp_rast_cmd_arg );
 365
 366 void lp_rast_triangle_ms_3_4(struct lp_rasterizer_task *,
 367                           const union lp_rast_cmd_arg );
 368
 369 void lp_rast_triangle_ms_3_16( struct lp_rasterizer_task *,
 370                             const union lp_rast_cmd_arg );
 371
 372 void lp_rast_triangle_ms_4_16( struct lp_rasterizer_task *,
 373                             const union lp_rast_cmd_arg );
 374
 375 void lp_rast_triangle_ms_32_1( struct lp_rasterizer_task *,
 376                          const union lp_rast_cmd_arg );
 377 void lp_rast_triangle_ms_32_2( struct lp_rasterizer_task *,
 378                          const union lp_rast_cmd_arg );
 379 void lp_rast_triangle_ms_32_3( struct lp_rasterizer_task *,
 380                          const union lp_rast_cmd_arg );
 381 void lp_rast_triangle_ms_32_4( struct lp_rasterizer_task *,
 382                          const union lp_rast_cmd_arg );
 383 void lp_rast_triangle_ms_32_5( struct lp_rasterizer_task *,
 384                          const union lp_rast_cmd_arg );
 385 void lp_rast_triangle_ms_32_6( struct lp_rasterizer_task *,
 386                          const union lp_rast_cmd_arg );
 387 void lp_rast_triangle_ms_32_7( struct lp_rasterizer_task *,
 388                          const union lp_rast_cmd_arg );
 389 void lp_rast_triangle_ms_32_8( struct lp_rasterizer_task *,
 390                          const union lp_rast_cmd_arg );
 391
 392 void lp_rast_triangle_ms_32_3_4(struct lp_rasterizer_task *,
 393                           const union lp_rast_cmd_arg );
 394
 395 void lp_rast_triangle_ms_32_3_16( struct lp_rasterizer_task *,
 396                             const union lp_rast_cmd_arg );
 397
 398 void lp_rast_triangle_ms_32_4_16( struct lp_rasterizer_task *,
 399                             const union lp_rast_cmd_arg );
 400
 401 void
 402 lp_rast_set_state(struct lp_rasterizer_task *task,
 403                   const union lp_rast_cmd_arg arg);
 404
 405 void
 406 lp_debug_bin( const struct cmd_bin *bin, int x, int y );
 407
 408 #endif