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
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  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
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  25  *
  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    /* Pixel blocks produced during rasterization
  65     */
  66    unsigned nr_blocks;
  67    struct {
  68       unsigned x;
  69       unsigned y;
  70       unsigned mask;
  71    } blocks[256];
  72
  73    const struct lp_rast_state *current_state;
  74
  75    /** "back" pointer */
  76    struct lp_rasterizer *rast;
  77
  78    /** "my" index */
  79    unsigned thread_index;
  80
  81    pipe_semaphore work_ready;
  82    pipe_semaphore work_done;
  83 };
  84
  85
  86 /**
  87  * This is the state required while rasterizing tiles.
  88  * Note that this contains per-thread information too.
  89  * The tile size is TILE_SIZE x TILE_SIZE pixels.
  90  */
  91 struct lp_rasterizer
  92 {
  93    unsigned width, height; /**< Size of framebuffer, in pixels */
  94
  95    boolean clipped_tile;
  96    boolean check_for_clipped_tiles;
  97
  98    /* Framebuffer stuff
  99     */
 100    struct pipe_screen *screen;
 101    struct pipe_transfer *cbuf_transfer;
 102    struct pipe_transfer *zsbuf_transfer;
 103    void *cbuf_map;
 104    void *zsbuf_map;
 105
 106    struct {
 107       struct pipe_surface *cbuf;
 108       struct pipe_surface *zsbuf;
 109       boolean write_color;
 110       boolean write_zstencil;
 111       unsigned clear_color;
 112       unsigned clear_depth;
 113       char clear_stencil;
 114    } state;
 115
 116    /** A task object for each rasterization thread */
 117    struct lp_rasterizer_task tasks[MAX_THREADS];
 118
 119    unsigned num_threads;
 120    pipe_thread threads[MAX_THREADS];
 121
 122    struct lp_bins *bins;
 123    const struct pipe_framebuffer_state *fb;
 124    boolean write_depth;
 125 };
 126
 127
 128 void lp_rast_shade_quads( struct lp_rasterizer *rast,
 129                           unsigned thread_index,
 130                           const struct lp_rast_shader_inputs *inputs,
 131                           unsigned x, unsigned y,
 132                           unsigned masks);
 133
 134 #endif