summaryrefslogtreecommitdiff
path: root/src/gallium/drivers/cell/ppu/cell_vbuf.c
blob: 1bf0a24bcccd81a2333caf5934181d031e780000 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
/**************************************************************************
 * 
 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
 * All Rights Reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * 
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 * 
 **************************************************************************/

/**
 * Authors
 *  Brian Paul
 */


#include "cell_batch.h"
#include "cell_context.h"
#include "cell_flush.h"
#include "cell_spu.h"
#include "cell_vbuf.h"
#include "draw/draw_vbuf.h"
#include "util/u_memory.h"


/** Allow vertex data to be inlined after RENDER command */
#define ALLOW_INLINE_VERTS 1


/**
 * Subclass of vbuf_render because we need a cell_context pointer in
 * a few places.
 */
struct cell_vbuf_render
{
   struct vbuf_render base;
   struct cell_context *cell;
   uint prim;            /**< PIPE_PRIM_x */
   uint vertex_size;     /**< in bytes */
   void *vertex_buffer;  /**< just for debug, really */
   uint vertex_buf;      /**< in [0, CELL_NUM_BUFFERS-1] */
};


/** cast wrapper */
static struct cell_vbuf_render *
cell_vbuf_render(struct vbuf_render *vbr)
{
   return (struct cell_vbuf_render *) vbr;
}



static const struct vertex_info *
cell_vbuf_get_vertex_info(struct vbuf_render *vbr)
{
   struct cell_vbuf_render *cvbr = cell_vbuf_render(vbr);
   return &cvbr->cell->vertex_info;
}


static void *
cell_vbuf_allocate_vertices(struct vbuf_render *vbr,
                            ushort vertex_size, ushort nr_vertices)
{
   struct cell_vbuf_render *cvbr = cell_vbuf_render(vbr);
   /*printf("Alloc verts %u * %u\n", vertex_size, nr_vertices);*/

   assert(cvbr->vertex_buf == ~0);
   cvbr->vertex_buf = cell_get_empty_buffer(cvbr->cell);
   cvbr->vertex_buffer = cvbr->cell->buffer[cvbr->vertex_buf];
   cvbr->vertex_size = vertex_size;
   return cvbr->vertex_buffer;
}


static void
cell_vbuf_release_vertices(struct vbuf_render *vbr, void *vertices, 
                           unsigned vertex_size, unsigned vertices_used)
{
   struct cell_vbuf_render *cvbr = cell_vbuf_render(vbr);
   struct cell_context *cell = cvbr->cell;

   /*
   printf("%s vertex_buf = %u  count = %u\n",
          __FUNCTION__, cvbr->vertex_buf, vertices_used);
   */

   /* Tell SPUs they can release the vert buf */
   if (cvbr->vertex_buf != ~0U) {
      struct cell_command_release_verts *release
         = (struct cell_command_release_verts *)
         cell_batch_alloc(cell, sizeof(struct cell_command_release_verts));
      release->opcode = CELL_CMD_RELEASE_VERTS;
      release->vertex_buf = cvbr->vertex_buf;
   }

   cvbr->vertex_buf = ~0;
   cell_flush_int(cell, 0x0);

   assert(vertices == cvbr->vertex_buffer);
   cvbr->vertex_buffer = NULL;
}



static boolean
cell_vbuf_set_primitive(struct vbuf_render *vbr, unsigned prim)
{
   struct cell_vbuf_render *cvbr = cell_vbuf_render(vbr);
   cvbr->prim = prim;
   /*printf("cell_set_prim %u\n", prim);*/
   return TRUE;
}


static void
cell_vbuf_draw(struct vbuf_render *vbr,
	       const ushort *indices,
               uint nr_indices)
{
   struct cell_vbuf_render *cvbr = cell_vbuf_render(vbr);
   struct cell_context *cell = cvbr->cell;
   float xmin, ymin, xmax, ymax;
   uint i;
   uint nr_vertices = 0, min_index = ~0;
   const void *vertices = cvbr->vertex_buffer;
   const uint vertex_size = cvbr->vertex_size;

   for (i = 0; i < nr_indices; i++) {
      if (indices[i] > nr_vertices)
         nr_vertices = indices[i];
      if (indices[i] < min_index)
         min_index = indices[i];
   }
   nr_vertices++;

#if 0
   /*if (min_index > 0)*/
      printf("%s min_index = %u\n", __FUNCTION__, min_index);
#endif

#if 0
   printf("cell_vbuf_draw() nr_indices = %u nr_verts = %u\n",
          nr_indices, nr_vertices);
   printf("  ");
   for (i = 0; i < nr_indices; i += 3) {
      printf("%u %u %u, ", indices[i+0], indices[i+1], indices[i+2]);
   }
   printf("\n");
#elif 0
   printf("cell_vbuf_draw() nr_indices = %u nr_verts = %u  indexes = [%u %u %u ...]\n",
          nr_indices, nr_vertices,
          indices[0], indices[1], indices[2]);
   printf("ind space = %u, vert space = %u, space = %u\n",
          nr_indices * 2,
          nr_vertices * 4 * cell->vertex_info.size,
          cell_batch_free_space(cell));
#endif

   /* compute x/y bounding box */
   xmin = ymin = 1e50;
   xmax = ymax = -1e50;
   for (i = min_index; i < nr_vertices; i++) {
      const float *v = (float *) ((ubyte *) vertices + i * vertex_size);
      if (v[0] < xmin)
         xmin = v[0];
      if (v[0] > xmax)
         xmax = v[0];
      if (v[1] < ymin)
         ymin = v[1];
      if (v[1] > ymax)
         ymax = v[1];
   }
#if 0
   printf("PPU Bounds %g, %g .. %g, %g\n", xmin, ymin, xmax, ymax);
   fflush(stdout);
#endif

   if (cvbr->prim != PIPE_PRIM_TRIANGLES)
      return; /* only render tris for now */

   /* build/insert batch RENDER command */
   {
      const uint index_bytes = ROUNDUP8(nr_indices * 2);
      const uint vertex_bytes = nr_vertices * 4 * cell->vertex_info.size;
      const uint batch_size = sizeof(struct cell_command_render) + index_bytes;

      struct cell_command_render *render
         = (struct cell_command_render *)
         cell_batch_alloc(cell, batch_size);

      render->opcode = CELL_CMD_RENDER;
      render->prim_type = cvbr->prim;

      render->num_indexes = nr_indices;
      render->min_index = min_index;

      /* append indices after render command */
      memcpy(render + 1, indices, nr_indices * 2);

      /* if there's room, append vertices after the indices, else leave
       * vertices in the original/separate buffer.
       */
      render->vertex_size = 4 * cell->vertex_info.size;
      render->num_verts = nr_vertices;
      if (ALLOW_INLINE_VERTS &&
          min_index == 0 &&
          vertex_bytes + 16 <= cell_batch_free_space(cell)) {
         /* vertex data inlined, after indices, at 16-byte boundary */
         void *dst = cell_batch_alloc_aligned(cell, vertex_bytes, 16);
         memcpy(dst, vertices, vertex_bytes);
         render->inline_verts = TRUE;
         render->vertex_buf = ~0;
      }
      else {
         /* vertex data in separate buffer */
         render->inline_verts = FALSE;
         ASSERT(cvbr->vertex_buf >= 0);
         render->vertex_buf = cvbr->vertex_buf;
      }

      render->xmin = xmin;
      render->ymin = ymin;
      render->xmax = xmax;
      render->ymax = ymax;
   }

#if 0
   /* helpful for debug */
   cell_flush_int(cell, CELL_FLUSH_WAIT);
#endif
}


static void
cell_vbuf_destroy(struct vbuf_render *vbr)
{
   struct cell_vbuf_render *cvbr = cell_vbuf_render(vbr);
   cvbr->cell->vbuf_render = NULL;
   FREE(cvbr);
}


/**
 * Initialize the post-transform vertex buffer information for the given
 * context.
 */
void
cell_init_vbuf(struct cell_context *cell)
{
   assert(cell->draw);

   cell->vbuf_render = CALLOC_STRUCT(cell_vbuf_render);

   /* The max number of indexes is what can fix into a batch buffer,
    * minus the render and release-verts commands.
    */
   cell->vbuf_render->base.max_indices
      = (CELL_BUFFER_SIZE
         - sizeof(struct cell_command_render)
         - sizeof(struct cell_command_release_verts))
      / sizeof(ushort);
   cell->vbuf_render->base.max_vertex_buffer_bytes = CELL_BUFFER_SIZE;

   cell->vbuf_render->base.get_vertex_info = cell_vbuf_get_vertex_info;
   cell->vbuf_render->base.allocate_vertices = cell_vbuf_allocate_vertices;
   cell->vbuf_render->base.set_primitive = cell_vbuf_set_primitive;
   cell->vbuf_render->base.draw = cell_vbuf_draw;
   cell->vbuf_render->base.release_vertices = cell_vbuf_release_vertices;
   cell->vbuf_render->base.destroy = cell_vbuf_destroy;

   cell->vbuf_render->cell = cell;
#if 1
   cell->vbuf_render->vertex_buf = ~0;
#endif

   cell->vbuf = draw_vbuf_stage(cell->draw, &cell->vbuf_render->base);
}