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 "lp_rast.h"
  32
  33 struct pipe_transfer;
  34 struct pipe_screen;
  35
  36
  37 /**
  38  * A tile's color and depth memory.
  39  * We can choose whatever layout for the internal tile storage we prefer.
  40  */
  41 struct lp_rast_tile
  42 {
  43    uint8_t *color;
  44
  45    uint32_t *depth;
  46 };
  47
  48
  49 /**
  50  * This is the state required while rasterizing a tile.
  51  * The tile size is TILE_SIZE x TILE_SIZE pixels.
  52  */
  53 struct lp_rasterizer
  54 {
  55    struct lp_rast_tile tile;   /** Tile color/z/stencil memory */
  56
  57    unsigned x, y;          /**< Pos of this tile in framebuffer, in pixels */
  58    unsigned width, height; /**< Size of framebuffer, in pixels */
  59
  60    boolean clipped_tile;
  61    boolean check_for_clipped_tiles;
  62
  63    /* Framebuffer stuff
  64     */
  65    struct pipe_screen *screen;
  66    struct pipe_transfer *cbuf_transfer;
  67    struct pipe_transfer *zsbuf_transfer;
  68    void *cbuf_map;
  69    void *zsbuf_map;
  70
  71    struct {
  72       struct pipe_surface *cbuf;
  73       struct pipe_surface *zsbuf;
  74       boolean write_color;
  75       boolean write_zstencil;
  76       unsigned clear_color;
  77       unsigned clear_depth;
  78       char clear_stencil;
  79    } state;
  80
  81    /* Pixel blocks produced during rasterization
  82     */
  83    unsigned nr_blocks;
  84    struct {
  85       unsigned x;
  86       unsigned y;
  87       unsigned mask;
  88    } blocks[256];
  89
  90    const struct lp_rast_state *current_state;
  91 };
  92
  93
  94 void lp_rast_shade_quads( struct lp_rasterizer *rast,
  95                           const struct lp_rast_shader_inputs *inputs,
  96                           unsigned x, unsigned y,
  97                           unsigned masks);
  98
  99 #endif