summaryrefslogtreecommitdiff
path: root/src/gallium/drivers/i965/brw_draw_upload.c
blob: cf9405470c88e7f8e97be005ed223395700a96e7 (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
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
/**************************************************************************
 * 
 * Copyright 2003 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.
 * 
 **************************************************************************/

#include "pipe/p_context.h"
#include "util/u_inlines.h"

#include "util/u_upload_mgr.h"
#include "util/u_math.h"

#include "brw_draw.h"
#include "brw_defines.h"
#include "brw_context.h"
#include "brw_state.h"
#include "brw_screen.h"
#include "brw_batchbuffer.h"
#include "brw_debug.h"
#include "brw_resource.h"




static unsigned get_index_type(int type)
{
   switch (type) {
   case 1: return BRW_INDEX_BYTE;
   case 2: return BRW_INDEX_WORD;
   case 4: return BRW_INDEX_DWORD;
   default: assert(0); return 0;
   }
}


static int brw_prepare_vertices(struct brw_context *brw)
{
   unsigned int min_index = brw->curr.min_index;
   unsigned int max_index = brw->curr.max_index;
   GLuint i;
   int ret;

   if (BRW_DEBUG & DEBUG_VERTS)
      debug_printf("%s %d..%d\n", __FUNCTION__, min_index, max_index);


   for (i = 0; i < brw->curr.num_vertex_buffers; i++) {
      struct pipe_vertex_buffer *vb = &brw->curr.vertex_buffer[i];
      struct brw_winsys_buffer *bo;
      struct pipe_resource *upload_buf = NULL;
      unsigned offset;
      
      if (BRW_DEBUG & DEBUG_VERTS)
	 debug_printf("%s vb[%d] user:%d offset:0x%x sz:0x%x stride:0x%x\n",
		      __FUNCTION__, i,
		      brw_buffer_is_user_buffer(vb->buffer),
		      vb->buffer_offset,
		      vb->buffer->width0,
		      vb->stride);

      if (brw_buffer_is_user_buffer(vb->buffer)) {

	 /* XXX: simplify this.  Stop the state trackers from generating
	  * zero-stride buffers & have them use additional constants (or
	  * add support for >1 constant buffer) instead.
	  */
	 unsigned size = (vb->stride == 0 ? 
			  vb->buffer->width0 - vb->buffer_offset :
			  MAX2(vb->buffer->width0 - vb->buffer_offset,
			       vb->stride * (max_index + 1 - min_index)));
	 boolean flushed;

	 ret = u_upload_buffer( brw->vb.upload_vertex,
				0,
				vb->buffer_offset + min_index * vb->stride,
				size,
				vb->buffer,
				&offset,
				&upload_buf,
				&flushed );
	 if (ret)
	    return ret;

	 bo = brw_buffer(upload_buf)->bo;
	 
	 assert(offset + size <= bo->size);
      }
      else
      {
	 offset = vb->buffer_offset;
	 bo = brw_buffer(vb->buffer)->bo;
      }

      assert(offset < bo->size);
      
      /* Set up post-upload info about this vertex buffer:
       */
      brw->vb.vb[i].offset = offset;
      brw->vb.vb[i].stride = vb->stride;
      brw->vb.vb[i].vertex_count = (vb->stride == 0 ?
				    1 :
				    (bo->size - offset) / vb->stride);

      bo_reference( &brw->vb.vb[i].bo,  bo );

      /* Don't need to retain this reference.  We have a reference on
       * the underlying winsys buffer:
       */
      pipe_resource_reference( &upload_buf, NULL );
   }

   brw->vb.nr_vb = i;
   brw_prepare_query_begin(brw);

   for (i = 0; i < brw->vb.nr_vb; i++) {
      brw_add_validated_bo(brw, brw->vb.vb[i].bo);
   }

   return 0;
}

static int brw_emit_vertex_buffers( struct brw_context *brw )
{
   int i;

   /* If the VS doesn't read any inputs (calculating vertex position from
    * a state variable for some reason, for example), just bail.
    *
    * The stale VB state stays in place, but they don't do anything unless
    * a VE loads from them.
    */
   if (brw->vb.nr_vb == 0) {
      if (BRW_DEBUG & DEBUG_VERTS)
	 debug_printf("%s: no active vertex buffers\n", __FUNCTION__);

      return 0;
   }

   /* Emit VB state packets.
    */
   BEGIN_BATCH(1 + brw->vb.nr_vb * 4, IGNORE_CLIPRECTS);
   OUT_BATCH((CMD_VERTEX_BUFFER << 16) |
	     ((1 + brw->vb.nr_vb * 4) - 2));

   for (i = 0; i < brw->vb.nr_vb; i++) {
      OUT_BATCH((i << BRW_VB0_INDEX_SHIFT) |
		BRW_VB0_ACCESS_VERTEXDATA |
		(brw->vb.vb[i].stride << BRW_VB0_PITCH_SHIFT));
      OUT_RELOC(brw->vb.vb[i].bo,
		BRW_USAGE_VERTEX,
		brw->vb.vb[i].offset);
      if (BRW_IS_IGDNG(brw)) {
	 OUT_RELOC(brw->vb.vb[i].bo,
		   BRW_USAGE_VERTEX,
		   brw->vb.vb[i].bo->size - 1);
      } else
	 OUT_BATCH(brw->vb.vb[i].stride ? brw->vb.vb[i].vertex_count : 0);
      OUT_BATCH(0); /* Instance data step rate */
   }
   ADVANCE_BATCH();
   return 0;
}



static int brw_emit_vertex_elements(struct brw_context *brw)
{
   const struct brw_vertex_element_packet *brw_velems = brw->curr.velems;
   unsigned size = brw_velems->header.length + 2;

   /* why is this here */
   brw_emit_query_begin(brw);

   brw_batchbuffer_data(brw->batch, brw_velems, size * 4, IGNORE_CLIPRECTS);

   return 0;
}


static int brw_emit_vertices( struct brw_context *brw )
{
   int ret;

   ret = brw_emit_vertex_buffers( brw );
   if (ret)
      return ret;

   /* XXX should separate this? */
   ret = brw_emit_vertex_elements( brw );
   if (ret)
      return ret;

   return 0;
}


const struct brw_tracked_state brw_vertices = {
   .dirty = {
      .mesa = (PIPE_NEW_INDEX_RANGE |
               PIPE_NEW_VERTEX_BUFFER |
               PIPE_NEW_VERTEX_ELEMENT),
      .brw = BRW_NEW_BATCH,
      .cache = 0,
   },
   .prepare = brw_prepare_vertices,
   .emit = brw_emit_vertices,
};


static int brw_prepare_indices(struct brw_context *brw)
{
   struct pipe_resource *index_buffer = brw->curr.index_buffer;
   struct pipe_resource *upload_buf = NULL;
   struct brw_winsys_buffer *bo = NULL;
   GLuint offset;
   GLuint index_size, index_offset;
   GLuint ib_size;
   int ret;

   if (index_buffer == NULL)
      return 0;

   if (BRW_DEBUG & DEBUG_VERTS)
      debug_printf("%s: index_size:%d index_buffer->size:%d\n",
		   __FUNCTION__,
		   brw->curr.index_size,
		   brw->curr.index_buffer->width0);

   ib_size = index_buffer->width0;
   index_size = brw->curr.index_size;
   index_offset = brw->curr.index_offset;

   /* Turn userbuffer into a proper hardware buffer?
    */
   if (brw_buffer_is_user_buffer(index_buffer)) {
      boolean flushed;

      ret = u_upload_buffer( brw->vb.upload_index,
                             0,
			     index_offset,
			     ib_size,
			     index_buffer,
			     &offset,
			     &upload_buf,
			     &flushed );
      if (ret)
	 return ret;

      bo = brw_buffer(upload_buf)->bo;

      /* XXX: annotate the userbuffer with the upload information so
       * that successive calls don't get re-uploaded.
       */
   }
   else {
      bo = brw_buffer(index_buffer)->bo;
      ib_size = bo->size;
      offset = index_offset;
   }

   /* Use CMD_3D_PRIM's start_vertex_offset to avoid re-uploading the
    * index buffer state when we're just moving the start index of our
    * drawing.
    *
    * In gallium this will happen in the case where successive draw
    * calls are made with (distinct?) userbuffers, but the upload_mgr
    * places the data into a single winsys buffer.
    * 
    * This statechange doesn't raise any state flags and is always
    * just merged into the final draw packet:
    */
   if (1) {
      assert((offset & (index_size - 1)) == 0);
      brw->ib.start_vertex_offset = offset / index_size;
   }

   /* These statechanges trigger a new CMD_INDEX_BUFFER packet:
    */
   if (brw->ib.bo != bo ||
       brw->ib.size != ib_size)
   {
      bo_reference(&brw->ib.bo, bo);
      brw->ib.size = ib_size;
      brw->state.dirty.brw |= BRW_NEW_INDEX_BUFFER;
   }

   pipe_resource_reference( &upload_buf, NULL );
   brw_add_validated_bo(brw, brw->ib.bo);
   return 0;
}

const struct brw_tracked_state brw_indices = {
   .dirty = {
      .mesa = PIPE_NEW_INDEX_BUFFER,
      .brw = 0,
      .cache = 0,
   },
   .prepare = brw_prepare_indices,
};

static int brw_emit_index_buffer(struct brw_context *brw)
{
   /* Emit the indexbuffer packet:
    */
   if (brw->ib.bo)
   {
      struct brw_indexbuffer ib;

      memset(&ib, 0, sizeof(ib));

      ib.header.bits.opcode = CMD_INDEX_BUFFER;
      ib.header.bits.length = sizeof(ib)/4 - 2;
      ib.header.bits.index_format = get_index_type(brw->ib.size);
      ib.header.bits.cut_index_enable = 0;

      BEGIN_BATCH(4, IGNORE_CLIPRECTS);
      OUT_BATCH( ib.header.dword );
      OUT_RELOC(brw->ib.bo,
		BRW_USAGE_VERTEX,
		brw->ib.offset);
      OUT_RELOC(brw->ib.bo,
		BRW_USAGE_VERTEX,
		brw->ib.offset + brw->ib.size - 1);
      OUT_BATCH( 0 );
      ADVANCE_BATCH();
   }

   return 0;
}

const struct brw_tracked_state brw_index_buffer = {
   .dirty = {
      .mesa = 0,
      .brw = BRW_NEW_BATCH | BRW_NEW_INDEX_BUFFER,
      .cache = 0,
   },
   .emit = brw_emit_index_buffer,
};