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 extern int jit_line;
  49 extern const struct lp_rast_state *jit_state;
  50
  51 #define BEGIN_JIT_CALL(state) \
  52    do { \
  53       jit_line = __LINE__; \
  54       jit_state = state; \
  55    } while (0)
  56
  57 #define END_JIT_CALL() \
  58    do { \
  59       jit_line = 0; \
  60       jit_state = NULL; \
  61    } while (0)
  62
  63 #else
  64
  65 #define BEGIN_JIT_CALL(X)
  66 #define END_JIT_CALL()
  67
  68 #endif
  69
  70
  71 struct lp_rasterizer;
  72 struct cmd_bin;
  73
  74 /**
  75  * Per-thread rasterization state
  76  */
  77 struct lp_rasterizer_task
  78 {
  79    const struct cmd_bin *bin;
  80
  81    struct lp_scene *scene;
  82    unsigned x, y;          /**< Pos of this tile in framebuffer, in pixels */
  83
  84    uint8_t *color_tiles[PIPE_MAX_COLOR_BUFS];
  85    uint8_t *depth_tile;
  86
  87    /** "back" pointer */
  88    struct lp_rasterizer *rast;
  89
  90    /** "my" index */
  91    unsigned thread_index;
  92
  93    /* occlude counter for visiable pixels */
  94    uint32_t vis_counter;
  95    struct llvmpipe_query *query;
  96
  97    pipe_semaphore work_ready;
  98    pipe_semaphore work_done;
  99 };
 100
 101
 102 /**
 103  * This is the state required while rasterizing tiles.
 104  * Note that this contains per-thread information too.
 105  * The tile size is TILE_SIZE x TILE_SIZE pixels.
 106  */
 107 struct lp_rasterizer
 108 {
 109    boolean exit_flag;
 110
 111    /** The incoming queue of scenes ready to rasterize */
 112    struct lp_scene_queue *full_scenes;
 113
 114    /** The scene currently being rasterized by the threads */
 115    struct lp_scene *curr_scene;
 116
 117    /** A task object for each rasterization thread */
 118    struct lp_rasterizer_task tasks[LP_MAX_THREADS];
 119
 120    unsigned num_threads;
 121    pipe_thread threads[LP_MAX_THREADS];
 122
 123    /** For synchronizing the rasterization threads */
 124    pipe_barrier barrier;
 125 };
 126
 127
 128 void
 129 lp_rast_shade_quads_mask(struct lp_rasterizer_task *task,
 130                          const struct lp_rast_shader_inputs *inputs,
 131                          unsigned x, unsigned y,
 132                          unsigned mask);
 133
 134
 135
 136 /**
 137  * Get the pointer to a 4x4 depth/stencil block.
 138  * We'll map the z/stencil buffer on demand here.
 139  * Note that this may be called even when there's no z/stencil buffer - return
 140  * NULL in that case.
 141  * \param x, y location of 4x4 block in window coords
 142  */
 143 static INLINE void *
 144 lp_rast_get_depth_block_pointer(struct lp_rasterizer_task *task,
 145                                 unsigned x, unsigned y)
 146 {
 147    const struct lp_scene *scene = task->scene;
 148    void *depth;
 149
 150    assert((x % TILE_VECTOR_WIDTH) == 0);
 151    assert((y % TILE_VECTOR_HEIGHT) == 0);
 152
 153    if (!scene->zsbuf.map) {
 154       /* Either out of memory or no zsbuf.  Can't tell without access
 155        * to the state.  Just use dummy tile memory, but don't print
 156        * the oom warning as this most likely because there is no
 157        * zsbuf.
 158        */
 159       return lp_dummy_tile;
 160    }
 161
 162    depth = (scene->zsbuf.map +
 163             scene->zsbuf.stride * y +
 164             scene->zsbuf.blocksize * x * TILE_VECTOR_HEIGHT);
 165
 166    assert(lp_check_alignment(depth, 16));
 167    return depth;
 168 }
 169
 170
 171 /**
 172  * Get pointer to the swizzled color tile
 173  */
 174 static INLINE uint8_t *
 175 lp_rast_get_color_tile_pointer(struct lp_rasterizer_task *task,
 176                                unsigned buf, enum lp_texture_usage usage)
 177 {
 178    const struct lp_scene *scene = task->scene;
 179
 180    assert(task->x % TILE_SIZE == 0);
 181    assert(task->y % TILE_SIZE == 0);
 182    assert(buf < scene->fb.nr_cbufs);
 183
 184    if (!task->color_tiles[buf]) {
 185       struct pipe_surface *cbuf = scene->fb.cbufs[buf];
 186       struct llvmpipe_resource *lpt;
 187       assert(cbuf);
 188       lpt = llvmpipe_resource(cbuf->texture);
 189       task->color_tiles[buf] = lp_swizzled_cbuf[task->thread_index][buf];
 190
 191       if (usage != LP_TEX_USAGE_WRITE_ALL) {
 192          llvmpipe_swizzle_cbuf_tile(lpt,
 193                                     cbuf->face + cbuf->zslice,
 194                                     cbuf->level,
 195                                     task->x, task->y,
 196                                     task->color_tiles[buf]);
 197       }
 198    }
 199
 200    return task->color_tiles[buf];
 201 }
 202
 203
 204 /**
 205  * Get the pointer to a 4x4 color block (within a 64x64 tile).
 206  * We'll map the color buffer on demand here.
 207  * Note that this may be called even when there's no color buffers - return
 208  * NULL in that case.
 209  * \param x, y location of 4x4 block in window coords
 210  */
 211 static INLINE uint8_t *
 212 lp_rast_get_color_block_pointer(struct lp_rasterizer_task *task,
 213                                 unsigned buf, unsigned x, unsigned y)
 214 {
 215    unsigned px, py, pixel_offset;
 216    uint8_t *color;
 217
 218    assert((x % TILE_VECTOR_WIDTH) == 0);
 219    assert((y % TILE_VECTOR_HEIGHT) == 0);
 220
 221    color = lp_rast_get_color_tile_pointer(task, buf, LP_TEX_USAGE_READ_WRITE);
 222    assert(color);
 223
 224    px = x % TILE_SIZE;
 225    py = y % TILE_SIZE;
 226    pixel_offset = tile_pixel_offset(px, py, 0);
 227
 228    color = color + pixel_offset;
 229
 230    assert(lp_check_alignment(color, 16));
 231    return color;
 232 }
 233
 234
 235
 236 /**
 237  * Shade all pixels in a 4x4 block.  The fragment code omits the
 238  * triangle in/out tests.
 239  * \param x, y location of 4x4 block in window coords
 240  */
 241 static INLINE void
 242 lp_rast_shade_quads_all( struct lp_rasterizer_task *task,
 243                          const struct lp_rast_shader_inputs *inputs,
 244                          unsigned x, unsigned y )
 245 {
 246    const struct lp_scene *scene = task->scene;
 247    const struct lp_rast_state *state = inputs->state;
 248    struct lp_fragment_shader_variant *variant = state->variant;
 249    uint8_t *color[PIPE_MAX_COLOR_BUFS];
 250    void *depth;
 251    unsigned i;
 252
 253    /* color buffer */
 254    for (i = 0; i < scene->fb.nr_cbufs; i++)
 255       color[i] = lp_rast_get_color_block_pointer(task, i, x, y);
 256
 257    depth = lp_rast_get_depth_block_pointer(task, x, y);
 258
 259    /* run shader on 4x4 block */
 260    BEGIN_JIT_CALL(state);
 261    variant->jit_function[RAST_WHOLE]( &state->jit_context,
 262                                       x, y,
 263                                       inputs->facing,
 264                                       inputs->a0,
 265                                       inputs->dadx,
 266                                       inputs->dady,
 267                                       color,
 268                                       depth,
 269                                       0xffff,
 270                                       &task->vis_counter );
 271    END_JIT_CALL();
 272 }
 273
 274 void lp_rast_triangle_1( struct lp_rasterizer_task *,
 275                          const union lp_rast_cmd_arg );
 276 void lp_rast_triangle_2( struct lp_rasterizer_task *,
 277                          const union lp_rast_cmd_arg );
 278 void lp_rast_triangle_3( struct lp_rasterizer_task *,
 279                          const union lp_rast_cmd_arg );
 280 void lp_rast_triangle_4( struct lp_rasterizer_task *,
 281                          const union lp_rast_cmd_arg );
 282 void lp_rast_triangle_5( struct lp_rasterizer_task *,
 283                          const union lp_rast_cmd_arg );
 284 void lp_rast_triangle_6( struct lp_rasterizer_task *,
 285                          const union lp_rast_cmd_arg );
 286 void lp_rast_triangle_7( struct lp_rasterizer_task *,
 287                          const union lp_rast_cmd_arg );
 288 void lp_rast_triangle_8( struct lp_rasterizer_task *,
 289                          const union lp_rast_cmd_arg );
 290
 291 void lp_rast_triangle_3_16( struct lp_rasterizer_task *,
 292                             const union lp_rast_cmd_arg );
 293
 294 void
 295 lp_debug_bin( const struct cmd_bin *bin );
 296
 297 #endif