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 "os/os_thread.h"
32#include "util/u_format.h"
33#include "gallivm/lp_bld_debug.h"
34#include "lp_memory.h"
35#include "lp_rast.h"
36#include "lp_scene.h"
37#include "lp_state.h"
38#include "lp_texture.h"
39#include "lp_tile_soa.h"
40#include "lp_limits.h"
41
42
43/* If we crash in a jitted function, we can examine jit_line and jit_state
44 * to get some info.  This is not thread-safe, however.
45 */
46#ifdef DEBUG
47
48struct lp_rasterizer_task;
49extern int jit_line;
50extern const struct lp_rast_state *jit_state;
51extern const struct lp_rasterizer_task *jit_task;
52
53#define BEGIN_JIT_CALL(state, task)                  \
54   do { \
55      jit_line = __LINE__; \
56      jit_state = state; \
57      jit_task = task; \
58   } while (0)
59
60#define END_JIT_CALL() \
61   do { \
62      jit_line = 0; \
63      jit_state = NULL; \
64   } while (0)
65
66#else
67
68#define BEGIN_JIT_CALL(X, Y)
69#define END_JIT_CALL()
70
71#endif
72
73
74struct lp_rasterizer;
75struct cmd_bin;
76
77/**
78 * Per-thread rasterization state
79 */
80struct lp_rasterizer_task
81{
82   const struct cmd_bin *bin;
83   const struct lp_rast_state *state;
84
85   struct lp_scene *scene;
86   unsigned x, y;          /**< Pos of this tile in framebuffer, in pixels */
87
88   uint8_t *color_tiles[PIPE_MAX_COLOR_BUFS];
89   uint8_t *depth_tile;
90
91   /** "back" pointer */
92   struct lp_rasterizer *rast;
93
94   /** "my" index */
95   unsigned thread_index;
96
97   /* occlude counter for visiable pixels */
98   uint32_t vis_counter;
99   struct llvmpipe_query *query;
100
101   pipe_semaphore work_ready;
102   pipe_semaphore work_done;
103};
104
105
106/**
107 * This is the state required while rasterizing tiles.
108 * Note that this contains per-thread information too.
109 * The tile size is TILE_SIZE x TILE_SIZE pixels.
110 */
111struct lp_rasterizer
112{
113   boolean exit_flag;
114   boolean no_rast;  /**< For debugging/profiling */
115
116   /** The incoming queue of scenes ready to rasterize */
117   struct lp_scene_queue *full_scenes;
118
119   /** The scene currently being rasterized by the threads */
120   struct lp_scene *curr_scene;
121
122   /** A task object for each rasterization thread */
123   struct lp_rasterizer_task tasks[LP_MAX_THREADS];
124
125   unsigned num_threads;
126   pipe_thread threads[LP_MAX_THREADS];
127
128   /** For synchronizing the rasterization threads */
129   pipe_barrier barrier;
130};
131
132
133void
134lp_rast_shade_quads_mask(struct lp_rasterizer_task *task,
135                         const struct lp_rast_shader_inputs *inputs,
136                         unsigned x, unsigned y,
137                         unsigned mask);
138
139
140
141/**
142 * Get the pointer to a 4x4 depth/stencil block.
143 * We'll map the z/stencil buffer on demand here.
144 * Note that this may be called even when there's no z/stencil buffer - return
145 * NULL in that case.
146 * \param x, y location of 4x4 block in window coords
147 */
148static INLINE void *
149lp_rast_get_depth_block_pointer(struct lp_rasterizer_task *task,
150                                unsigned x, unsigned y)
151{
152   const struct lp_scene *scene = task->scene;
153   void *depth;
154
155   assert(x < scene->tiles_x * TILE_SIZE);
156   assert(y < scene->tiles_y * TILE_SIZE);
157   assert((x % TILE_VECTOR_WIDTH) == 0);
158   assert((y % TILE_VECTOR_HEIGHT) == 0);
159
160   if (!scene->zsbuf.map) {
161      /* Either out of memory or no zsbuf.  Can't tell without access
162       * to the state.  Just use dummy tile memory, but don't print
163       * the oom warning as this most likely because there is no
164       * zsbuf.
165       */
166      return lp_dummy_tile;
167   }
168
169   depth = (scene->zsbuf.map +
170            scene->zsbuf.stride * y +
171            scene->zsbuf.blocksize * x * TILE_VECTOR_HEIGHT);
172
173   assert(lp_check_alignment(depth, 16));
174   return depth;
175}
176
177
178/**
179 * Get pointer to the swizzled color tile
180 */
181static INLINE uint8_t *
182lp_rast_get_color_tile_pointer(struct lp_rasterizer_task *task,
183                               unsigned buf, enum lp_texture_usage usage)
184{
185   const struct lp_scene *scene = task->scene;
186
187   assert(task->x < scene->tiles_x * TILE_SIZE);
188   assert(task->y < scene->tiles_y * TILE_SIZE);
189   assert(task->x % TILE_SIZE == 0);
190   assert(task->y % TILE_SIZE == 0);
191   assert(buf < scene->fb.nr_cbufs);
192
193   if (!task->color_tiles[buf]) {
194      struct pipe_surface *cbuf = scene->fb.cbufs[buf];
195      struct llvmpipe_resource *lpt;
196      assert(cbuf);
197      lpt = llvmpipe_resource(cbuf->texture);
198      task->color_tiles[buf] = lp_swizzled_cbuf[task->thread_index][buf];
199
200      if (usage != LP_TEX_USAGE_WRITE_ALL) {
201         llvmpipe_swizzle_cbuf_tile(lpt,
202                                    cbuf->u.tex.first_layer,
203                                    cbuf->u.tex.level,
204                                    task->x, task->y,
205                                    task->color_tiles[buf]);
206      }
207   }
208
209   return task->color_tiles[buf];
210}
211
212
213/**
214 * Get the pointer to a 4x4 color block (within a 64x64 tile).
215 * We'll map the color buffer on demand here.
216 * Note that this may be called even when there's no color buffers - return
217 * NULL in that case.
218 * \param x, y location of 4x4 block in window coords
219 */
220static INLINE uint8_t *
221lp_rast_get_color_block_pointer(struct lp_rasterizer_task *task,
222                                unsigned buf, unsigned x, unsigned y)
223{
224   unsigned px, py, pixel_offset;
225   uint8_t *color;
226
227   assert(x < task->scene->tiles_x * TILE_SIZE);
228   assert(y < task->scene->tiles_y * TILE_SIZE);
229   assert((x % TILE_VECTOR_WIDTH) == 0);
230   assert((y % TILE_VECTOR_HEIGHT) == 0);
231
232   color = lp_rast_get_color_tile_pointer(task, buf, LP_TEX_USAGE_READ_WRITE);
233   assert(color);
234
235   px = x % TILE_SIZE;
236   py = y % TILE_SIZE;
237   pixel_offset = tile_pixel_offset(px, py, 0);
238
239   color = color + pixel_offset;
240
241   assert(lp_check_alignment(color, 16));
242   return color;
243}
244
245
246
247/**
248 * Shade all pixels in a 4x4 block.  The fragment code omits the
249 * triangle in/out tests.
250 * \param x, y location of 4x4 block in window coords
251 */
252static INLINE void
253lp_rast_shade_quads_all( struct lp_rasterizer_task *task,
254                         const struct lp_rast_shader_inputs *inputs,
255                         unsigned x, unsigned y )
256{
257   const struct lp_scene *scene = task->scene;
258   const struct lp_rast_state *state = task->state;
259   struct lp_fragment_shader_variant *variant = state->variant;
260   uint8_t *color[PIPE_MAX_COLOR_BUFS];
261   void *depth;
262   unsigned i;
263
264   /* color buffer */
265   for (i = 0; i < scene->fb.nr_cbufs; i++)
266      color[i] = lp_rast_get_color_block_pointer(task, i, x, y);
267
268   depth = lp_rast_get_depth_block_pointer(task, x, y);
269
270   /* run shader on 4x4 block */
271   BEGIN_JIT_CALL(state, task);
272   variant->jit_function[RAST_WHOLE]( &state->jit_context,
273                                      x, y,
274                                      inputs->frontfacing,
275                                      GET_A0(inputs),
276                                      GET_DADX(inputs),
277                                      GET_DADY(inputs),
278                                      color,
279                                      depth,
280                                      0xffff,
281                                      &task->vis_counter );
282   END_JIT_CALL();
283}
284
285void lp_rast_triangle_1( struct lp_rasterizer_task *,
286                         const union lp_rast_cmd_arg );
287void lp_rast_triangle_2( struct lp_rasterizer_task *,
288                         const union lp_rast_cmd_arg );
289void lp_rast_triangle_3( struct lp_rasterizer_task *,
290                         const union lp_rast_cmd_arg );
291void lp_rast_triangle_4( struct lp_rasterizer_task *,
292                         const union lp_rast_cmd_arg );
293void lp_rast_triangle_5( struct lp_rasterizer_task *,
294                         const union lp_rast_cmd_arg );
295void lp_rast_triangle_6( struct lp_rasterizer_task *,
296                         const union lp_rast_cmd_arg );
297void lp_rast_triangle_7( struct lp_rasterizer_task *,
298                         const union lp_rast_cmd_arg );
299void lp_rast_triangle_8( struct lp_rasterizer_task *,
300                         const union lp_rast_cmd_arg );
301
302void lp_rast_triangle_3_4(struct lp_rasterizer_task *,
303			  const union lp_rast_cmd_arg );
304
305void lp_rast_triangle_3_16( struct lp_rasterizer_task *,
306                            const union lp_rast_cmd_arg );
307
308void lp_rast_triangle_4_16( struct lp_rasterizer_task *,
309                            const union lp_rast_cmd_arg );
310
311void
312lp_rast_set_state(struct lp_rasterizer_task *task,
313                  const union lp_rast_cmd_arg arg);
314
315void
316lp_debug_bin( const struct cmd_bin *bin );
317
318#endif
319