src/gallium/drivers/llvmpipe/lp_rast_priv.h

   1 /**************************************************************************
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   3  * Copyright 2009 VMware, Inc.
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   7  * copy of this software and associated documentation files (the
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  11  * permit persons to whom the Software is furnished to do so, subject to
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  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
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  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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  26  **************************************************************************/
  27
  28 #ifndef LP_RAST_PRIV_H
  29 #define LP_RAST_PRIV_H
  30
  31 #include "pipe/p_thread.h"
  32 #include "lp_rast.h"
  33
  34
  35 #define MAX_THREADS 8  /* XXX probably temporary here */
  36
  37
  38 struct pipe_transfer;
  39 struct pipe_screen;
  40 struct lp_rasterizer;
  41
  42
  43 /**
  44  * A tile's color and depth memory.
  45  * We can choose whatever layout for the internal tile storage we prefer.
  46  */
  47 struct lp_rast_tile
  48 {
  49    uint8_t *color;
  50
  51    uint32_t *depth;
  52 };
  53
  54
  55 /**
  56  * Per-thread rasterization state
  57  */
  58 struct lp_rasterizer_task
  59 {
  60    struct lp_rast_tile tile;   /** Tile color/z/stencil memory */
  61
  62    unsigned x, y;          /**< Pos of this tile in framebuffer, in pixels */
  63
  64    const struct lp_rast_state *current_state;
  65
  66    /** "back" pointer */
  67    struct lp_rasterizer *rast;
  68
  69    /** "my" index */
  70    unsigned thread_index;
  71
  72    pipe_semaphore work_ready;
  73    pipe_semaphore work_done;
  74 };
  75
  76
  77 /**
  78  * This is the state required while rasterizing tiles.
  79  * Note that this contains per-thread information too.
  80  * The tile size is TILE_SIZE x TILE_SIZE pixels.
  81  */
  82 struct lp_rasterizer
  83 {
  84    boolean clipped_tile;
  85    boolean check_for_clipped_tiles;
  86
  87    /* Framebuffer stuff
  88     */
  89    struct pipe_screen *screen;
  90    struct pipe_transfer *cbuf_transfer;
  91    struct pipe_transfer *zsbuf_transfer;
  92    void *cbuf_map;
  93    void *zsbuf_map;
  94
  95    struct {
  96       struct pipe_framebuffer_state fb;
  97       boolean write_color;
  98       boolean write_zstencil;
  99       unsigned clear_color;
 100       unsigned clear_depth;
 101       char clear_stencil;
 102    } state;
 103
 104    /** The incoming queue of scenes ready to rasterize */
 105    struct lp_scene_queue *full_scenes;
 106    /** The outgoing queue of processed scenes to return to setup modulee */
 107    struct lp_scene_queue *empty_scenes;
 108
 109    /** The scene currently being rasterized by the threads */
 110    struct lp_scene *curr_scene;
 111
 112    /** A task object for each rasterization thread */
 113    struct lp_rasterizer_task tasks[MAX_THREADS];
 114
 115    unsigned num_threads;
 116    pipe_thread threads[MAX_THREADS];
 117
 118    /** For synchronizing the rasterization threads */
 119    pipe_barrier barrier;
 120 };
 121
 122
 123 void lp_rast_shade_quads( struct lp_rasterizer *rast,
 124                           unsigned thread_index,
 125                           const struct lp_rast_shader_inputs *inputs,
 126                           unsigned x, unsigned y,
 127                           int32_t c1, int32_t c2, int32_t c3);
 128
 129 #endif