lp_rast_priv.h revision efc82aef35a2aac5d2ed9774f6d28f2626796416 
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
115   /** The incoming queue of scenes ready to rasterize */
116   struct lp_scene_queue *full_scenes;
117
118   /** The scene currently being rasterized by the threads */
119   struct lp_scene *curr_scene;
120
121   /** A task object for each rasterization thread */
122   struct lp_rasterizer_task tasks[LP_MAX_THREADS];
123
124   unsigned num_threads;
125   pipe_thread threads[LP_MAX_THREADS];
126
127   /** For synchronizing the rasterization threads */
128   pipe_barrier barrier;
129};
130
131
132void
133lp_rast_shade_quads_mask(struct lp_rasterizer_task *task,
134                         const struct lp_rast_shader_inputs *inputs,
135                         unsigned x, unsigned y,
136                         unsigned mask);
137
138
139
140/**
141 * Get the pointer to a 4x4 depth/stencil block.
142 * We'll map the z/stencil buffer on demand here.
143 * Note that this may be called even when there's no z/stencil buffer - return
144 * NULL in that case.
145 * \param x, y location of 4x4 block in window coords
146 */
147static INLINE void *
148lp_rast_get_depth_block_pointer(struct lp_rasterizer_task *task,
149                                unsigned x, unsigned y)
150{
151   const struct lp_scene *scene = task->scene;
152   void *depth;
153
154   assert((x % TILE_VECTOR_WIDTH) == 0);
155   assert((y % TILE_VECTOR_HEIGHT) == 0);
156
157   if (!scene->zsbuf.map) {
158      /* Either out of memory or no zsbuf.  Can't tell without access
159       * to the state.  Just use dummy tile memory, but don't print
160       * the oom warning as this most likely because there is no
161       * zsbuf.
162       */
163      return lp_dummy_tile;
164   }
165
166   depth = (scene->zsbuf.map +
167            scene->zsbuf.stride * y +
168            scene->zsbuf.blocksize * x * TILE_VECTOR_HEIGHT);
169
170   assert(lp_check_alignment(depth, 16));
171   return depth;
172}
173
174
175/**
176 * Get pointer to the swizzled color tile
177 */
178static INLINE uint8_t *
179lp_rast_get_color_tile_pointer(struct lp_rasterizer_task *task,
180                               unsigned buf, enum lp_texture_usage usage)
181{
182   const struct lp_scene *scene = task->scene;
183
184   assert(task->x % TILE_SIZE == 0);
185   assert(task->y % TILE_SIZE == 0);
186   assert(buf < scene->fb.nr_cbufs);
187
188   if (!task->color_tiles[buf]) {
189      struct pipe_surface *cbuf = scene->fb.cbufs[buf];
190      struct llvmpipe_resource *lpt;
191      assert(cbuf);
192      lpt = llvmpipe_resource(cbuf->texture);
193      task->color_tiles[buf] = lp_swizzled_cbuf[task->thread_index][buf];
194
195      if (usage != LP_TEX_USAGE_WRITE_ALL) {
196         llvmpipe_swizzle_cbuf_tile(lpt,
197                                    cbuf->face + cbuf->zslice,
198                                    cbuf->level,
199                                    task->x, task->y,
200                                    task->color_tiles[buf]);
201      }
202   }
203
204   return task->color_tiles[buf];
205}
206
207
208/**
209 * Get the pointer to a 4x4 color block (within a 64x64 tile).
210 * We'll map the color buffer on demand here.
211 * Note that this may be called even when there's no color buffers - return
212 * NULL in that case.
213 * \param x, y location of 4x4 block in window coords
214 */
215static INLINE uint8_t *
216lp_rast_get_color_block_pointer(struct lp_rasterizer_task *task,
217                                unsigned buf, unsigned x, unsigned y)
218{
219   unsigned px, py, pixel_offset;
220   uint8_t *color;
221
222   assert((x % TILE_VECTOR_WIDTH) == 0);
223   assert((y % TILE_VECTOR_HEIGHT) == 0);
224
225   color = lp_rast_get_color_tile_pointer(task, buf, LP_TEX_USAGE_READ_WRITE);
226   assert(color);
227
228   px = x % TILE_SIZE;
229   py = y % TILE_SIZE;
230   pixel_offset = tile_pixel_offset(px, py, 0);
231
232   color = color + pixel_offset;
233
234   assert(lp_check_alignment(color, 16));
235   return color;
236}
237
238
239
240/**
241 * Shade all pixels in a 4x4 block.  The fragment code omits the
242 * triangle in/out tests.
243 * \param x, y location of 4x4 block in window coords
244 */
245static INLINE void
246lp_rast_shade_quads_all( struct lp_rasterizer_task *task,
247                         const struct lp_rast_shader_inputs *inputs,
248                         unsigned x, unsigned y )
249{
250   const struct lp_scene *scene = task->scene;
251   const struct lp_rast_state *state = task->state;
252   struct lp_fragment_shader_variant *variant = state->variant;
253   uint8_t *color[PIPE_MAX_COLOR_BUFS];
254   void *depth;
255   unsigned i;
256
257   /* color buffer */
258   for (i = 0; i < scene->fb.nr_cbufs; i++)
259      color[i] = lp_rast_get_color_block_pointer(task, i, x, y);
260
261   depth = lp_rast_get_depth_block_pointer(task, x, y);
262
263   /* run shader on 4x4 block */
264   BEGIN_JIT_CALL(state, task);
265   variant->jit_function[RAST_WHOLE]( &state->jit_context,
266                                      x, y,
267                                      inputs->frontfacing,
268                                      GET_A0(inputs),
269                                      GET_DADX(inputs),
270                                      GET_DADY(inputs),
271                                      color,
272                                      depth,
273                                      0xffff,
274                                      &task->vis_counter );
275   END_JIT_CALL();
276}
277
278void lp_rast_triangle_1( struct lp_rasterizer_task *,
279                         const union lp_rast_cmd_arg );
280void lp_rast_triangle_2( struct lp_rasterizer_task *,
281                         const union lp_rast_cmd_arg );
282void lp_rast_triangle_3( struct lp_rasterizer_task *,
283                         const union lp_rast_cmd_arg );
284void lp_rast_triangle_4( struct lp_rasterizer_task *,
285                         const union lp_rast_cmd_arg );
286void lp_rast_triangle_5( struct lp_rasterizer_task *,
287                         const union lp_rast_cmd_arg );
288void lp_rast_triangle_6( struct lp_rasterizer_task *,
289                         const union lp_rast_cmd_arg );
290void lp_rast_triangle_7( struct lp_rasterizer_task *,
291                         const union lp_rast_cmd_arg );
292void lp_rast_triangle_8( struct lp_rasterizer_task *,
293                         const union lp_rast_cmd_arg );
294
295void lp_rast_triangle_3_4(struct lp_rasterizer_task *,
296			  const union lp_rast_cmd_arg );
297
298void lp_rast_triangle_3_16( struct lp_rasterizer_task *,
299                            const union lp_rast_cmd_arg );
300
301void lp_rast_triangle_4_16( struct lp_rasterizer_task *,
302                            const union lp_rast_cmd_arg );
303
304void
305lp_rast_set_state(struct lp_rasterizer_task *task,
306                  const union lp_rast_cmd_arg arg);
307
308void
309lp_debug_bin( const struct cmd_bin *bin );
310
311#endif
312