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    const struct lp_rast_state *state;
  81
  82    struct lp_scene *scene;
  83    unsigned x, y;          /**< Pos of this tile in framebuffer, in pixels */
  84
  85    uint8_t *color_tiles[PIPE_MAX_COLOR_BUFS];
  86    uint8_t *depth_tile;
  87
  88    /** "back" pointer */
  89    struct lp_rasterizer *rast;
  90
  91    /** "my" index */
  92    unsigned thread_index;
  93
  94    /* occlude counter for visiable pixels */
  95    uint32_t vis_counter;
  96    struct llvmpipe_query *query;
  97
  98    pipe_semaphore work_ready;
  99    pipe_semaphore work_done;
 100 };
 101
 102
 103 /**
 104  * This is the state required while rasterizing tiles.
 105  * Note that this contains per-thread information too.
 106  * The tile size is TILE_SIZE x TILE_SIZE pixels.
 107  */
 108 struct lp_rasterizer
 109 {
 110    boolean exit_flag;
 111
 112    /** The incoming queue of scenes ready to rasterize */
 113    struct lp_scene_queue *full_scenes;
 114
 115    /** The scene currently being rasterized by the threads */
 116    struct lp_scene *curr_scene;
 117
 118    /** A task object for each rasterization thread */
 119    struct lp_rasterizer_task tasks[LP_MAX_THREADS];
 120
 121    unsigned num_threads;
 122    pipe_thread threads[LP_MAX_THREADS];
 123
 124    /** For synchronizing the rasterization threads */
 125    pipe_barrier barrier;
 126 };
 127
 128
 129 void
 130 lp_rast_shade_quads_mask(struct lp_rasterizer_task *task,
 131                          const struct lp_rast_shader_inputs *inputs,
 132                          unsigned x, unsigned y,
 133                          unsigned mask);
 134
 135
 136
 137 /**
 138  * Get the pointer to a 4x4 depth/stencil block.
 139  * We'll map the z/stencil buffer on demand here.
 140  * Note that this may be called even when there's no z/stencil buffer - return
 141  * NULL in that case.
 142  * \param x, y location of 4x4 block in window coords
 143  */
 144 static INLINE void *
 145 lp_rast_get_depth_block_pointer(struct lp_rasterizer_task *task,
 146                                 unsigned x, unsigned y)
 147 {
 148    const struct lp_scene *scene = task->scene;
 149    void *depth;
 150
 151    assert((x % TILE_VECTOR_WIDTH) == 0);
 152    assert((y % TILE_VECTOR_HEIGHT) == 0);
 153
 154    if (!scene->zsbuf.map) {
 155       /* Either out of memory or no zsbuf.  Can't tell without access
 156        * to the state.  Just use dummy tile memory, but don't print
 157        * the oom warning as this most likely because there is no
 158        * zsbuf.
 159        */
 160       return lp_dummy_tile;
 161    }
 162
 163    depth = (scene->zsbuf.map +
 164             scene->zsbuf.stride * y +
 165             scene->zsbuf.blocksize * x * TILE_VECTOR_HEIGHT);
 166
 167    assert(lp_check_alignment(depth, 16));
 168    return depth;
 169 }
 170
 171
 172 /**
 173  * Get pointer to the swizzled color tile
 174  */
 175 static INLINE uint8_t *
 176 lp_rast_get_color_tile_pointer(struct lp_rasterizer_task *task,
 177                                unsigned buf, enum lp_texture_usage usage)
 178 {
 179    const struct lp_scene *scene = task->scene;
 180
 181    assert(task->x % TILE_SIZE == 0);
 182    assert(task->y % TILE_SIZE == 0);
 183    assert(buf < scene->fb.nr_cbufs);
 184
 185    if (!task->color_tiles[buf]) {
 186       struct pipe_surface *cbuf = scene->fb.cbufs[buf];
 187       struct llvmpipe_resource *lpt;
 188       assert(cbuf);
 189       lpt = llvmpipe_resource(cbuf->texture);
 190       task->color_tiles[buf] = lp_swizzled_cbuf[task->thread_index][buf];
 191
 192       if (usage != LP_TEX_USAGE_WRITE_ALL) {
 193          llvmpipe_swizzle_cbuf_tile(lpt,
 194                                     cbuf->face + cbuf->zslice,
 195                                     cbuf->level,
 196                                     task->x, task->y,
 197                                     task->color_tiles[buf]);
 198       }
 199    }
 200
 201    return task->color_tiles[buf];
 202 }
 203
 204
 205 /**
 206  * Get the pointer to a 4x4 color block (within a 64x64 tile).
 207  * We'll map the color buffer on demand here.
 208  * Note that this may be called even when there's no color buffers - return
 209  * NULL in that case.
 210  * \param x, y location of 4x4 block in window coords
 211  */
 212 static INLINE uint8_t *
 213 lp_rast_get_color_block_pointer(struct lp_rasterizer_task *task,
 214                                 unsigned buf, unsigned x, unsigned y)
 215 {
 216    unsigned px, py, pixel_offset;
 217    uint8_t *color;
 218
 219    assert((x % TILE_VECTOR_WIDTH) == 0);
 220    assert((y % TILE_VECTOR_HEIGHT) == 0);
 221
 222    color = lp_rast_get_color_tile_pointer(task, buf, LP_TEX_USAGE_READ_WRITE);
 223    assert(color);
 224
 225    px = x % TILE_SIZE;
 226    py = y % TILE_SIZE;
 227    pixel_offset = tile_pixel_offset(px, py, 0);
 228
 229    color = color + pixel_offset;
 230
 231    assert(lp_check_alignment(color, 16));
 232    return color;
 233 }
 234
 235
 236
 237 /**
 238  * Shade all pixels in a 4x4 block.  The fragment code omits the
 239  * triangle in/out tests.
 240  * \param x, y location of 4x4 block in window coords
 241  */
 242 static INLINE void
 243 lp_rast_shade_quads_all( struct lp_rasterizer_task *task,
 244                          const struct lp_rast_shader_inputs *inputs,
 245                          unsigned x, unsigned y )
 246 {
 247    const struct lp_scene *scene = task->scene;
 248    const struct lp_rast_state *state = task->state;
 249    struct lp_fragment_shader_variant *variant = state->variant;
 250    uint8_t *color[PIPE_MAX_COLOR_BUFS];
 251    void *depth;
 252    unsigned i;
 253
 254    /* color buffer */
 255    for (i = 0; i < scene->fb.nr_cbufs; i++)
 256       color[i] = lp_rast_get_color_block_pointer(task, i, x, y);
 257
 258    depth = lp_rast_get_depth_block_pointer(task, x, y);
 259
 260    /* run shader on 4x4 block */
 261    BEGIN_JIT_CALL(state);
 262    variant->jit_function[RAST_WHOLE]( &state->jit_context,
 263                                       x, y,
 264                                       inputs->frontfacing,
 265                                       GET_A0(inputs),
 266                                       GET_DADX(inputs),
 267                                       GET_DADY(inputs),
 268                                       color,
 269                                       depth,
 270                                       0xffff,
 271                                       &task->vis_counter );
 272    END_JIT_CALL();
 273 }
 274
 275 void lp_rast_triangle_1( struct lp_rasterizer_task *,
 276                          const union lp_rast_cmd_arg );
 277 void lp_rast_triangle_2( struct lp_rasterizer_task *,
 278                          const union lp_rast_cmd_arg );
 279 void lp_rast_triangle_3( struct lp_rasterizer_task *,
 280                          const union lp_rast_cmd_arg );
 281 void lp_rast_triangle_4( struct lp_rasterizer_task *,
 282                          const union lp_rast_cmd_arg );
 283 void lp_rast_triangle_5( struct lp_rasterizer_task *,
 284                          const union lp_rast_cmd_arg );
 285 void lp_rast_triangle_6( struct lp_rasterizer_task *,
 286                          const union lp_rast_cmd_arg );
 287 void lp_rast_triangle_7( struct lp_rasterizer_task *,
 288                          const union lp_rast_cmd_arg );
 289 void lp_rast_triangle_8( struct lp_rasterizer_task *,
 290                          const union lp_rast_cmd_arg );
 291
 292 void lp_rast_triangle_3_4(struct lp_rasterizer_task *,
 293                           const union lp_rast_cmd_arg );
 294
 295 void lp_rast_triangle_3_16( struct lp_rasterizer_task *,
 296                             const union lp_rast_cmd_arg );
 297
 298 void lp_rast_triangle_4_16( struct lp_rasterizer_task *,
 299                             const union lp_rast_cmd_arg );
 300
 301 void
 302 lp_rast_set_state(struct lp_rasterizer_task *task,
 303                   const union lp_rast_cmd_arg arg);
 304
 305 void
 306 lp_debug_bin( const struct cmd_bin *bin );
 307
 308 #endif