lp_rast_priv.h revision b1659b9213f3eeee440590dfe379f0d193948307 
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 "lp_rast.h"
32
33struct pipe_transfer;
34struct 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 */
41struct 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 */
53struct 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
94void 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
100