lp_rast_priv.h revision 39be50dcdebe6bcbb48cb6aa8ac151eee811acb1 
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
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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 "os/os_thread.h"
32#include "util/u_format.h"
33#include "gallivm/lp_bld_debug.h"
34#include "lp_rast.h"
35#include "lp_scene.h"
36#include "lp_texture.h"
37#include "lp_tile_soa.h"
38#include "lp_limits.h"
39
40
41struct lp_rasterizer;
42
43
44/**
45 * Per-thread rasterization state
46 */
47struct lp_rasterizer_task
48{
49   unsigned x, y;          /**< Pos of this tile in framebuffer, in pixels */
50
51   uint8_t *color_tiles[PIPE_MAX_COLOR_BUFS];
52   uint8_t *depth_tile;
53
54   const struct lp_rast_state *current_state;
55
56   /** "back" pointer */
57   struct lp_rasterizer *rast;
58
59   /** "my" index */
60   unsigned thread_index;
61
62   pipe_semaphore work_ready;
63   pipe_semaphore work_done;
64};
65
66
67/**
68 * This is the state required while rasterizing tiles.
69 * Note that this contains per-thread information too.
70 * The tile size is TILE_SIZE x TILE_SIZE pixels.
71 */
72struct lp_rasterizer
73{
74   boolean exit_flag;
75
76   /* Framebuffer stuff
77    */
78   struct {
79      void *map;
80      unsigned tiles_per_row;
81      unsigned blocksize;
82      enum pipe_format format;
83   } cbuf[PIPE_MAX_COLOR_BUFS];
84
85   struct {
86      uint8_t *map;
87      unsigned stride;
88      unsigned blocksize;
89   } zsbuf;
90
91   struct {
92      unsigned nr_cbufs;
93      unsigned clear_color;
94      unsigned clear_depth;
95      char clear_stencil;
96   } state;
97
98   /** The incoming queue of scenes ready to rasterize */
99   struct lp_scene_queue *full_scenes;
100
101   /**
102    * The outgoing queue of processed scenes to return to setup module
103    *
104    * XXX: while scenes are per-context but the rasterizer is
105    * (potentially) shared, these empty scenes should be returned to
106    * the context which created them rather than retained here.
107    */
108   struct lp_scene_queue *empty_scenes;
109
110   /** The scene currently being rasterized by the threads */
111   struct lp_scene *curr_scene;
112
113   /** A task object for each rasterization thread */
114   struct lp_rasterizer_task tasks[LP_MAX_THREADS];
115
116   unsigned num_threads;
117   pipe_thread threads[LP_MAX_THREADS];
118
119   /** For synchronizing the rasterization threads */
120   pipe_barrier barrier;
121};
122
123
124void lp_rast_shade_quads( struct lp_rasterizer_task *task,
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
130/**
131 * Get the pointer to a 4x4 depth/stencil block.
132 * We'll map the z/stencil buffer on demand here.
133 * Note that this may be called even when there's no z/stencil buffer - return
134 * NULL in that case.
135 * \param x, y location of 4x4 block in window coords
136 */
137static INLINE void *
138lp_rast_get_depth_block_pointer(const struct lp_rasterizer *rast,
139                                unsigned x, unsigned y)
140{
141   void *depth;
142
143   assert((x % TILE_VECTOR_WIDTH) == 0);
144   assert((y % TILE_VECTOR_HEIGHT) == 0);
145
146   assert(rast->zsbuf.map || !rast->curr_scene->fb.zsbuf);
147
148   if (!rast->zsbuf.map)
149      return NULL;
150
151   depth = (rast->zsbuf.map +
152            rast->zsbuf.stride * y +
153            rast->zsbuf.blocksize * x * TILE_VECTOR_HEIGHT);
154
155   assert(lp_check_alignment(depth, 16));
156   return depth;
157}
158
159
160/**
161 * Get the pointer to a 4x4 color block (within a 64x64 tile).
162 * We'll map the color buffer on demand here.
163 * Note that this may be called even when there's no color buffers - return
164 * NULL in that case.
165 * \param x, y location of 4x4 block in window coords
166 */
167static INLINE uint8_t *
168lp_rast_get_color_block_pointer(struct lp_rasterizer_task *task,
169                                unsigned buf, unsigned x, unsigned y)
170{
171   unsigned px, py, pixel_offset;
172   uint8_t *color;
173
174   assert((x % TILE_VECTOR_WIDTH) == 0);
175   assert((y % TILE_VECTOR_HEIGHT) == 0);
176
177   color = task->color_tiles[buf];
178   assert(color);
179
180   px = x % TILE_SIZE;
181   py = y % TILE_SIZE;
182   pixel_offset = tile_pixel_offset(px, py, 0);
183
184   color = color + pixel_offset;
185
186   assert(lp_check_alignment(color, 16));
187   return color;
188}
189
190
191
192/**
193 * Shade all pixels in a 4x4 block.  The fragment code omits the
194 * triangle in/out tests.
195 * \param x, y location of 4x4 block in window coords
196 */
197static INLINE void
198lp_rast_shade_quads_all( struct lp_rasterizer_task *task,
199                         const struct lp_rast_shader_inputs *inputs,
200                         unsigned x, unsigned y )
201{
202   struct lp_rasterizer *rast = task->rast;
203   const struct lp_rast_state *state = task->current_state;
204   uint8_t *color[PIPE_MAX_COLOR_BUFS];
205   void *depth;
206   unsigned i;
207
208   /* color buffer */
209   for (i = 0; i < rast->state.nr_cbufs; i++)
210      color[i] = lp_rast_get_color_block_pointer(task, i, x, y);
211
212   depth = lp_rast_get_depth_block_pointer(rast, x, y);
213
214   /* run shader on 4x4 block */
215   state->jit_function[RAST_WHOLE]( &state->jit_context,
216                                    x, y,
217                                    inputs->facing,
218                                    inputs->a0,
219                                    inputs->dadx,
220                                    inputs->dady,
221                                    color,
222                                    depth,
223                                    INT_MIN, INT_MIN, INT_MIN,
224                                    NULL, NULL, NULL );
225}
226
227
228#endif
229