lp_rast_priv.h revision c1a04416023e24621e4992caf593e8dfe8d7a2fc 
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 "pipe/p_thread.h"
32#include "lp_rast.h"
33
34
35#define MAX_THREADS 8  /* XXX probably temporary here */
36
37
38struct pipe_transfer;
39struct pipe_screen;
40struct 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 */
47struct lp_rast_tile
48{
49   uint8_t *color[PIPE_MAX_COLOR_BUFS];
50
51   uint32_t *depth;
52};
53
54
55/**
56 * Per-thread rasterization state
57 */
58struct 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   const struct lp_rast_state *current_state;
65
66   /** "back" pointer */
67   struct lp_rasterizer *rast;
68
69   /** "my" index */
70   unsigned thread_index;
71
72   pipe_semaphore work_ready;
73   pipe_semaphore work_done;
74};
75
76
77/**
78 * This is the state required while rasterizing tiles.
79 * Note that this contains per-thread information too.
80 * The tile size is TILE_SIZE x TILE_SIZE pixels.
81 */
82struct lp_rasterizer
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[PIPE_MAX_COLOR_BUFS];
91   struct pipe_transfer *zsbuf_transfer;
92   void *cbuf_map[PIPE_MAX_COLOR_BUFS];
93   void *zsbuf_map;
94
95   struct {
96      struct pipe_framebuffer_state fb;
97      boolean write_color;
98      boolean write_zstencil;
99      unsigned clear_color;
100      unsigned clear_depth;
101      char clear_stencil;
102   } state;
103
104   /** The incoming queue of scenes ready to rasterize */
105   struct lp_scene_queue *full_scenes;
106   /** The outgoing queue of processed scenes to return to setup modulee */
107   struct lp_scene_queue *empty_scenes;
108
109   /** The scene currently being rasterized by the threads */
110   struct lp_scene *curr_scene;
111
112   /** A task object for each rasterization thread */
113   struct lp_rasterizer_task tasks[MAX_THREADS];
114
115   unsigned num_threads;
116   pipe_thread threads[MAX_THREADS];
117
118   /** For synchronizing the rasterization threads */
119   pipe_barrier barrier;
120};
121
122
123void lp_rast_shade_quads( struct lp_rasterizer *rast,
124                          unsigned thread_index,
125                          const struct lp_rast_shader_inputs *inputs,
126                          unsigned x, unsigned y,
127                          int32_t c1, int32_t c2, int32_t c3);
128
129#endif
130