lp_rast_priv.h revision 7f457acabcbeea6a27b4f375f55e318fff52445f 
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;
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   /* Pixel blocks produced during rasterization
65    */
66   unsigned nr_blocks;
67   struct {
68      unsigned x;
69      unsigned y;
70      unsigned mask;
71   } blocks[256];
72
73   const struct lp_rast_state *current_state;
74
75   /** "back" pointer */
76   struct lp_rasterizer *rast;
77
78   /** "my" index */
79   unsigned thread_index;
80
81   pipe_semaphore work_ready;
82   pipe_semaphore work_done;
83};
84
85
86/**
87 * This is the state required while rasterizing tiles.
88 * Note that this contains per-thread information too.
89 * The tile size is TILE_SIZE x TILE_SIZE pixels.
90 */
91struct lp_rasterizer
92{
93   unsigned width, height; /**< Size of framebuffer, in pixels */
94
95   boolean clipped_tile;
96   boolean check_for_clipped_tiles;
97
98   /* Framebuffer stuff
99    */
100   struct pipe_screen *screen;
101   struct pipe_transfer *cbuf_transfer;
102   struct pipe_transfer *zsbuf_transfer;
103   void *cbuf_map;
104   void *zsbuf_map;
105
106   struct {
107      struct pipe_surface *cbuf;
108      struct pipe_surface *zsbuf;
109      boolean write_color;
110      boolean write_zstencil;
111      unsigned clear_color;
112      unsigned clear_depth;
113      char clear_stencil;
114   } state;
115
116   /** A task object for each rasterization thread */
117   struct lp_rasterizer_task tasks[MAX_THREADS];
118
119   unsigned num_threads;
120   pipe_thread threads[MAX_THREADS];
121
122   struct lp_bins *bins;
123   const struct pipe_framebuffer_state *fb;
124   boolean write_depth;
125};
126
127
128void lp_rast_shade_quads( struct lp_rasterizer *rast,
129                          unsigned thread_index,
130                          const struct lp_rast_shader_inputs *inputs,
131                          unsigned x, unsigned y,
132                          unsigned masks);
133
134#endif
135