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_tile_soa.h"
  40 #include "lp_limits.h"
  41
  42
  43 /* If we crash in a jitted function, we can examine jit_line and jit_state
  44  * to get some info.  This is not thread-safe, however.
  45  */
  46 #ifdef DEBUG
  47
  48 struct lp_rasterizer_task;
  49 extern int jit_line;
  50 extern const struct lp_rast_state *jit_state;
  51 extern const struct lp_rasterizer_task *jit_task;
  52
  53 #define BEGIN_JIT_CALL(state, task)                  \
  54    do { \
  55       jit_line = __LINE__; \
  56       jit_state = state; \
  57       jit_task = task; \
  58    } while (0)
  59
  60 #define END_JIT_CALL() \
  61    do { \
  62       jit_line = 0; \
  63       jit_state = NULL; \
  64    } while (0)
  65
  66 #else
  67
  68 #define BEGIN_JIT_CALL(X, Y)
  69 #define END_JIT_CALL()
  70
  71 #endif
  72
  73
  74 struct lp_rasterizer;
  75 struct cmd_bin;
  76
  77 /**
  78  * Per-thread rasterization state
  79  */
  80 struct lp_rasterizer_task
  81 {
  82    const struct cmd_bin *bin;
  83    const struct lp_rast_state *state;
  84
  85    struct lp_scene *scene;
  86    unsigned x, y;          /**< Pos of this tile in framebuffer, in pixels */
  87
  88    uint8_t *color_tiles[PIPE_MAX_COLOR_BUFS];
  89    uint8_t *depth_tile;
  90
  91    /** "back" pointer */
  92    struct lp_rasterizer *rast;
  93
  94    /** "my" index */
  95    unsigned thread_index;
  96
  97    /* occlude counter for visiable pixels */
  98    uint32_t vis_counter;
  99    struct llvmpipe_query *query;
 100
 101    pipe_semaphore work_ready;
 102    pipe_semaphore work_done;
 103 };
 104
 105
 106 /**
 107  * This is the state required while rasterizing tiles.
 108  * Note that this contains per-thread information too.
 109  * The tile size is TILE_SIZE x TILE_SIZE pixels.
 110  */
 111 struct lp_rasterizer
 112 {
 113    boolean exit_flag;
 114
 115    /** The incoming queue of scenes ready to rasterize */
 116    struct lp_scene_queue *full_scenes;
 117
 118    /** The scene currently being rasterized by the threads */
 119    struct lp_scene *curr_scene;
 120
 121    /** A task object for each rasterization thread */
 122    struct lp_rasterizer_task tasks[LP_MAX_THREADS];
 123
 124    unsigned num_threads;
 125    pipe_thread threads[LP_MAX_THREADS];
 126
 127    /** For synchronizing the rasterization threads */
 128    pipe_barrier barrier;
 129 };
 130
 131
 132 void
 133 lp_rast_shade_quads_mask(struct lp_rasterizer_task *task,
 134                          const struct lp_rast_shader_inputs *inputs,
 135                          unsigned x, unsigned y,
 136                          unsigned mask);
 137
 138
 139
 140 /**
 141  * Get the pointer to a 4x4 depth/stencil block.
 142  * We'll map the z/stencil buffer on demand here.
 143  * Note that this may be called even when there's no z/stencil buffer - return
 144  * NULL in that case.
 145  * \param x, y location of 4x4 block in window coords
 146  */
 147 static INLINE void *
 148 lp_rast_get_depth_block_pointer(struct lp_rasterizer_task *task,
 149                                 unsigned x, unsigned y)
 150 {
 151    const struct lp_scene *scene = task->scene;
 152    void *depth;
 153
 154    assert(x < scene->tiles_x * TILE_SIZE);
 155    assert(y < scene->tiles_y * TILE_SIZE);
 156    assert((x % TILE_VECTOR_WIDTH) == 0);
 157    assert((y % TILE_VECTOR_HEIGHT) == 0);
 158
 159    if (!scene->zsbuf.map) {
 160       /* Either out of memory or no zsbuf.  Can't tell without access
 161        * to the state.  Just use dummy tile memory, but don't print
 162        * the oom warning as this most likely because there is no
 163        * zsbuf.
 164        */
 165       return lp_dummy_tile;
 166    }
 167
 168    depth = (scene->zsbuf.map +
 169             scene->zsbuf.stride * y +
 170             scene->zsbuf.blocksize * x * TILE_VECTOR_HEIGHT);
 171
 172    assert(lp_check_alignment(depth, 16));
 173    return depth;
 174 }
 175
 176
 177 /**
 178  * Get pointer to the swizzled color tile
 179  */
 180 static INLINE uint8_t *
 181 lp_rast_get_color_tile_pointer(struct lp_rasterizer_task *task,
 182                                unsigned buf, enum lp_texture_usage usage)
 183 {
 184    const struct lp_scene *scene = task->scene;
 185
 186    assert(task->x < scene->tiles_x * TILE_SIZE);
 187    assert(task->y < scene->tiles_y * TILE_SIZE);
 188    assert(task->x % TILE_SIZE == 0);
 189    assert(task->y % TILE_SIZE == 0);
 190    assert(buf < scene->fb.nr_cbufs);
 191
 192    if (!task->color_tiles[buf]) {
 193       struct pipe_surface *cbuf = scene->fb.cbufs[buf];
 194       struct llvmpipe_resource *lpt;
 195       assert(cbuf);
 196       lpt = llvmpipe_resource(cbuf->texture);
 197       task->color_tiles[buf] = lp_swizzled_cbuf[task->thread_index][buf];
 198
 199       if (usage != LP_TEX_USAGE_WRITE_ALL) {
 200          llvmpipe_swizzle_cbuf_tile(lpt,
 201                                     cbuf->u.tex.first_layer,
 202                                     cbuf->u.tex.level,
 203                                     task->x, task->y,
 204                                     task->color_tiles[buf]);
 205       }
 206    }
 207
 208    return task->color_tiles[buf];
 209 }
 210
 211
 212 /**
 213  * Get the pointer to a 4x4 color block (within a 64x64 tile).
 214  * We'll map the color buffer on demand here.
 215  * Note that this may be called even when there's no color buffers - return
 216  * NULL in that case.
 217  * \param x, y location of 4x4 block in window coords
 218  */
 219 static INLINE uint8_t *
 220 lp_rast_get_color_block_pointer(struct lp_rasterizer_task *task,
 221                                 unsigned buf, unsigned x, unsigned y)
 222 {
 223    unsigned px, py, pixel_offset;
 224    uint8_t *color;
 225
 226    assert(x < task->scene->tiles_x * TILE_SIZE);
 227    assert(y < task->scene->tiles_y * TILE_SIZE);
 228    assert((x % TILE_VECTOR_WIDTH) == 0);
 229    assert((y % TILE_VECTOR_HEIGHT) == 0);
 230
 231    color = lp_rast_get_color_tile_pointer(task, buf, LP_TEX_USAGE_READ_WRITE);
 232    assert(color);
 233
 234    px = x % TILE_SIZE;
 235    py = y % TILE_SIZE;
 236    pixel_offset = tile_pixel_offset(px, py, 0);
 237
 238    color = color + pixel_offset;
 239
 240    assert(lp_check_alignment(color, 16));
 241    return color;
 242 }
 243
 244
 245
 246 /**
 247  * Shade all pixels in a 4x4 block.  The fragment code omits the
 248  * triangle in/out tests.
 249  * \param x, y location of 4x4 block in window coords
 250  */
 251 static INLINE void
 252 lp_rast_shade_quads_all( struct lp_rasterizer_task *task,
 253                          const struct lp_rast_shader_inputs *inputs,
 254                          unsigned x, unsigned y )
 255 {
 256    const struct lp_scene *scene = task->scene;
 257    const struct lp_rast_state *state = task->state;
 258    struct lp_fragment_shader_variant *variant = state->variant;
 259    uint8_t *color[PIPE_MAX_COLOR_BUFS];
 260    void *depth;
 261    unsigned i;
 262
 263    /* color buffer */
 264    for (i = 0; i < scene->fb.nr_cbufs; i++)
 265       color[i] = lp_rast_get_color_block_pointer(task, i, x, y);
 266
 267    depth = lp_rast_get_depth_block_pointer(task, x, y);
 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->vis_counter );
 281    END_JIT_CALL();
 282 }
 283
 284 void lp_rast_triangle_1( struct lp_rasterizer_task *,
 285                          const union lp_rast_cmd_arg );
 286 void lp_rast_triangle_2( struct lp_rasterizer_task *,
 287                          const union lp_rast_cmd_arg );
 288 void lp_rast_triangle_3( struct lp_rasterizer_task *,
 289                          const union lp_rast_cmd_arg );
 290 void lp_rast_triangle_4( struct lp_rasterizer_task *,
 291                          const union lp_rast_cmd_arg );
 292 void lp_rast_triangle_5( struct lp_rasterizer_task *,
 293                          const union lp_rast_cmd_arg );
 294 void lp_rast_triangle_6( struct lp_rasterizer_task *,
 295                          const union lp_rast_cmd_arg );
 296 void lp_rast_triangle_7( struct lp_rasterizer_task *,
 297                          const union lp_rast_cmd_arg );
 298 void lp_rast_triangle_8( struct lp_rasterizer_task *,
 299                          const union lp_rast_cmd_arg );
 300
 301 void lp_rast_triangle_3_4(struct lp_rasterizer_task *,
 302                           const union lp_rast_cmd_arg );
 303
 304 void lp_rast_triangle_3_16( struct lp_rasterizer_task *,
 305                             const union lp_rast_cmd_arg );
 306
 307 void lp_rast_triangle_4_16( struct lp_rasterizer_task *,
 308                             const union lp_rast_cmd_arg );
 309
 310 void
 311 lp_rast_set_state(struct lp_rasterizer_task *task,
 312                   const union lp_rast_cmd_arg arg);
 313
 314 void
 315 lp_debug_bin( const struct cmd_bin *bin );
 316
 317 #endif