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 "os/os_thread.h"
  32 #include "util/u_format.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    uint64_t ps_invocations;
 103    uint8_t ps_inv_multiplier;
 104
 105    pipe_semaphore work_ready;
 106    pipe_semaphore work_done;
 107 };
 108
 109
 110 /**
 111  * This is the state required while rasterizing tiles.
 112  * Note that this contains per-thread information too.
 113  * The tile size is TILE_SIZE x TILE_SIZE pixels.
 114  */
 115 struct lp_rasterizer
 116 {
 117    boolean exit_flag;
 118    boolean no_rast;  /**< For debugging/profiling */
 119
 120    /** The incoming queue of scenes ready to rasterize */
 121    struct lp_scene_queue *full_scenes;
 122
 123    /** The scene currently being rasterized by the threads */
 124    struct lp_scene *curr_scene;
 125
 126    /** A task object for each rasterization thread */
 127    struct lp_rasterizer_task tasks[LP_MAX_THREADS];
 128
 129    unsigned num_threads;
 130    pipe_thread threads[LP_MAX_THREADS];
 131
 132    /** For synchronizing the rasterization threads */
 133    pipe_barrier barrier;
 134 };
 135
 136
 137 void
 138 lp_rast_shade_quads_mask(struct lp_rasterizer_task *task,
 139                          const struct lp_rast_shader_inputs *inputs,
 140                          unsigned x, unsigned y,
 141                          unsigned mask);
 142
 143
 144 /**
 145  * Get the pointer to a 4x4 color block (within a 64x64 tile).
 146  * \param x, y location of 4x4 block in window coords
 147  */
 148 static inline uint8_t *
 149 lp_rast_get_color_block_pointer(struct lp_rasterizer_task *task,
 150                                 unsigned buf, unsigned x, unsigned y,
 151                                 unsigned layer)
 152 {
 153    unsigned px, py, pixel_offset;
 154    uint8_t *color;
 155
 156    assert(x < task->scene->tiles_x * TILE_SIZE);
 157    assert(y < task->scene->tiles_y * TILE_SIZE);
 158    assert((x % TILE_VECTOR_WIDTH) == 0);
 159    assert((y % TILE_VECTOR_HEIGHT) == 0);
 160    assert(buf < task->scene->fb.nr_cbufs);
 161
 162    assert(task->color_tiles[buf]);
 163
 164    /*
 165     * We don't actually benefit from having per tile cbuf/zsbuf pointers,
 166     * it's just extra work - the mul/add would be exactly the same anyway.
 167     * Fortunately the extra work (modulo) here is very cheap at least...
 168     */
 169    px = x % TILE_SIZE;
 170    py = y % TILE_SIZE;
 171
 172    pixel_offset = px * task->scene->cbufs[buf].format_bytes +
 173                   py * task->scene->cbufs[buf].stride;
 174    color = task->color_tiles[buf] + pixel_offset;
 175
 176    if (layer) {
 177       color += layer * task->scene->cbufs[buf].layer_stride;
 178    }
 179
 180    assert(lp_check_alignment(color, llvmpipe_get_format_alignment(task->scene->fb.cbufs[buf]->format)));
 181    return color;
 182 }
 183
 184
 185 /**
 186  * Get the pointer to a 4x4 depth block (within a 64x64 tile).
 187  * \param x, y location of 4x4 block in window coords
 188  */
 189 static inline uint8_t *
 190 lp_rast_get_depth_block_pointer(struct lp_rasterizer_task *task,
 191                                 unsigned x, unsigned y, unsigned layer)
 192 {
 193    unsigned px, py, pixel_offset;
 194    uint8_t *depth;
 195
 196    assert(x < task->scene->tiles_x * TILE_SIZE);
 197    assert(y < task->scene->tiles_y * TILE_SIZE);
 198    assert((x % TILE_VECTOR_WIDTH) == 0);
 199    assert((y % TILE_VECTOR_HEIGHT) == 0);
 200
 201    assert(task->depth_tile);
 202
 203    px = x % TILE_SIZE;
 204    py = y % TILE_SIZE;
 205
 206    pixel_offset = px * task->scene->zsbuf.format_bytes +
 207                   py * task->scene->zsbuf.stride;
 208    depth = task->depth_tile + pixel_offset;
 209
 210    if (layer) {
 211       depth += layer * task->scene->zsbuf.layer_stride;
 212    }
 213
 214    assert(lp_check_alignment(depth, llvmpipe_get_format_alignment(task->scene->fb.zsbuf->format)));
 215    return depth;
 216 }
 217
 218
 219
 220 /**
 221  * Shade all pixels in a 4x4 block.  The fragment code omits the
 222  * triangle in/out tests.
 223  * \param x, y location of 4x4 block in window coords
 224  */
 225 static inline void
 226 lp_rast_shade_quads_all( struct lp_rasterizer_task *task,
 227                          const struct lp_rast_shader_inputs *inputs,
 228                          unsigned x, unsigned y )
 229 {
 230    const struct lp_scene *scene = task->scene;
 231    const struct lp_rast_state *state = task->state;
 232    struct lp_fragment_shader_variant *variant = state->variant;
 233    uint8_t *color[PIPE_MAX_COLOR_BUFS];
 234    unsigned stride[PIPE_MAX_COLOR_BUFS];
 235    uint8_t *depth = NULL;
 236    unsigned depth_stride = 0;
 237    unsigned i;
 238
 239    /* color buffer */
 240    for (i = 0; i < scene->fb.nr_cbufs; i++) {
 241       if (scene->fb.cbufs[i]) {
 242          stride[i] = scene->cbufs[i].stride;
 243          color[i] = lp_rast_get_color_block_pointer(task, i, x, y,
 244                                                     inputs->layer);
 245       }
 246       else {
 247          stride[i] = 0;
 248          color[i] = NULL;
 249       }
 250    }
 251
 252    if (scene->zsbuf.map) {
 253       depth = lp_rast_get_depth_block_pointer(task, x, y, inputs->layer);
 254       depth_stride = scene->zsbuf.stride;
 255    }
 256
 257    /*
 258     * The rasterizer may produce fragments outside our
 259     * allocated 4x4 blocks hence need to filter them out here.
 260     */
 261    if ((x % TILE_SIZE) < task->width && (y % TILE_SIZE) < task->height) {
 262       /* not very accurate would need a popcount on the mask */
 263       /* always count this not worth bothering? */
 264       task->ps_invocations += 1 * variant->ps_inv_multiplier;
 265
 266       /* Propagate non-interpolated raster state. */
 267       task->thread_data.raster_state.viewport_index = inputs->viewport_index;
 268
 269       /* run shader on 4x4 block */
 270       BEGIN_JIT_CALL(state, task);
 271       variant->jit_function[RAST_WHOLE]( &state->jit_context,
 272                                          x, y,
 273                                          inputs->frontfacing,
 274                                          GET_A0(inputs),
 275                                          GET_DADX(inputs),
 276                                          GET_DADY(inputs),
 277                                          color,
 278                                          depth,
 279                                          0xffff,
 280                                          &task->thread_data,
 281                                          stride,
 282                                          depth_stride);
 283       END_JIT_CALL();
 284    }
 285 }
 286
 287 void lp_rast_triangle_1( struct lp_rasterizer_task *,
 288                          const union lp_rast_cmd_arg );
 289 void lp_rast_triangle_2( struct lp_rasterizer_task *,
 290                          const union lp_rast_cmd_arg );
 291 void lp_rast_triangle_3( struct lp_rasterizer_task *,
 292                          const union lp_rast_cmd_arg );
 293 void lp_rast_triangle_4( struct lp_rasterizer_task *,
 294                          const union lp_rast_cmd_arg );
 295 void lp_rast_triangle_5( struct lp_rasterizer_task *,
 296                          const union lp_rast_cmd_arg );
 297 void lp_rast_triangle_6( struct lp_rasterizer_task *,
 298                          const union lp_rast_cmd_arg );
 299 void lp_rast_triangle_7( struct lp_rasterizer_task *,
 300                          const union lp_rast_cmd_arg );
 301 void lp_rast_triangle_8( struct lp_rasterizer_task *,
 302                          const union lp_rast_cmd_arg );
 303
 304 void lp_rast_triangle_3_4(struct lp_rasterizer_task *,
 305                           const union lp_rast_cmd_arg );
 306
 307 void lp_rast_triangle_3_16( struct lp_rasterizer_task *,
 308                             const union lp_rast_cmd_arg );
 309
 310 void lp_rast_triangle_4_16( struct lp_rasterizer_task *,
 311                             const union lp_rast_cmd_arg );
 312
 313
 314 void lp_rast_triangle_32_1( struct lp_rasterizer_task *,
 315                          const union lp_rast_cmd_arg );
 316 void lp_rast_triangle_32_2( struct lp_rasterizer_task *,
 317                          const union lp_rast_cmd_arg );
 318 void lp_rast_triangle_32_3( struct lp_rasterizer_task *,
 319                          const union lp_rast_cmd_arg );
 320 void lp_rast_triangle_32_4( struct lp_rasterizer_task *,
 321                          const union lp_rast_cmd_arg );
 322 void lp_rast_triangle_32_5( struct lp_rasterizer_task *,
 323                          const union lp_rast_cmd_arg );
 324 void lp_rast_triangle_32_6( struct lp_rasterizer_task *,
 325                          const union lp_rast_cmd_arg );
 326 void lp_rast_triangle_32_7( struct lp_rasterizer_task *,
 327                          const union lp_rast_cmd_arg );
 328 void lp_rast_triangle_32_8( struct lp_rasterizer_task *,
 329                          const union lp_rast_cmd_arg );
 330
 331 void lp_rast_triangle_32_3_4(struct lp_rasterizer_task *,
 332                           const union lp_rast_cmd_arg );
 333
 334 void lp_rast_triangle_32_3_16( struct lp_rasterizer_task *,
 335                             const union lp_rast_cmd_arg );
 336
 337 void lp_rast_triangle_32_4_16( struct lp_rasterizer_task *,
 338                             const union lp_rast_cmd_arg );
 339
 340 void
 341 lp_rast_set_state(struct lp_rasterizer_task *task,
 342                   const union lp_rast_cmd_arg arg);
 343
 344 void
 345 lp_debug_bin( const struct cmd_bin *bin, int x, int y );
 346
 347 #endif