lp_rast_priv.h revision 3a06c113c76355fc9622adfe7565c18d9787e9a8 
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
33
34#define MAX_THREADS 4  /* XXX probably temporary here */
35
36
37struct pipe_transfer;
38struct 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 */
45struct lp_rast_tile
46{
47   uint8_t *color;
48
49   uint32_t *depth;
50};
51
52
53/**
54 * Per-thread rasterization state
55 */
56struct 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 */
80struct 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
110void 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
117