src/gallium/drivers/llvmpipe/lp_rast_priv.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 VMware, Inc.
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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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  27
  28 #ifndef LP_RAST_PRIV_H
  29 #define LP_RAST_PRIV_H
  30
  31 #include "lp_rast.h"
  32
  33
  34 #define MAX_THREADS 4  /* XXX probably temporary here */
  35
  36
  37 struct pipe_transfer;
  38 struct pipe_screen;
  39
  40
  41 /**
  42  * A tile's color and depth memory.
  43  * We can choose whatever layout for the internal tile storage we prefer.
  44  */
  45 struct lp_rast_tile
  46 {
  47    uint8_t *color;
  48
  49    uint32_t *depth;
  50 };
  51
  52
  53 /**
  54  * Per-thread rasterization state
  55  */
  56 struct lp_rasterizer_task
  57 {
  58    struct lp_rast_tile tile;   /** Tile color/z/stencil memory */
  59
  60    unsigned x, y;          /**< Pos of this tile in framebuffer, in pixels */
  61
  62    /* Pixel blocks produced during rasterization
  63     */
  64    unsigned nr_blocks;
  65    struct {
  66       unsigned x;
  67       unsigned y;
  68       unsigned mask;
  69    } blocks[256];
  70
  71    const struct lp_rast_state *current_state;
  72 };
  73
  74
  75 /**
  76  * This is the state required while rasterizing tiles.
  77  * Note that this contains per-thread information too.
  78  * The tile size is TILE_SIZE x TILE_SIZE pixels.
  79  */
  80 struct lp_rasterizer
  81 {
  82    unsigned width, height; /**< Size of framebuffer, in pixels */
  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_surface *cbuf;
  97       struct pipe_surface *zsbuf;
  98       boolean write_color;
  99       boolean write_zstencil;
 100       unsigned clear_color;
 101       unsigned clear_depth;
 102       char clear_stencil;
 103    } state;
 104
 105    /** A task object for each rasterization thread */
 106    struct lp_rasterizer_task tasks[MAX_THREADS];
 107 };
 108
 109
 110 void lp_rast_shade_quads( struct lp_rasterizer *rast,
 111                           unsigned thread_index,
 112                           const struct lp_rast_shader_inputs *inputs,
 113                           unsigned x, unsigned y,
 114                           unsigned masks);
 115
 116 #endif