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
|
/**********************************************************
* Copyright 2008-2009 VMware, Inc. 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, sublicense, 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 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
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* 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 "svga_cmd.h"
#include "util/u_inlines.h"
#include "indices/u_indices.h"
#include "svga_hw_reg.h"
#include "svga_draw.h"
#include "svga_draw_private.h"
#include "svga_context.h"
#define DBG 0
static enum pipe_error
generate_indices(struct svga_hwtnl *hwtnl,
unsigned nr,
unsigned index_size,
u_generate_func generate, struct pipe_resource **out_buf)
{
struct pipe_context *pipe = &hwtnl->svga->pipe;
struct pipe_transfer *transfer;
unsigned size = index_size * nr;
struct pipe_resource *dst = NULL;
void *dst_map = NULL;
dst = pipe_buffer_create(pipe->screen, PIPE_BIND_INDEX_BUFFER,
PIPE_USAGE_IMMUTABLE, size);
if (dst == NULL)
goto fail;
dst_map = pipe_buffer_map(pipe, dst, PIPE_TRANSFER_WRITE, &transfer);
if (dst_map == NULL)
goto fail;
generate(0, nr, dst_map);
pipe_buffer_unmap(pipe, transfer);
*out_buf = dst;
return PIPE_OK;
fail:
if (dst_map)
pipe_buffer_unmap(pipe, transfer);
if (dst)
pipe->screen->resource_destroy(pipe->screen, dst);
return PIPE_ERROR_OUT_OF_MEMORY;
}
static boolean
compare(unsigned cached_nr, unsigned nr, unsigned type)
{
if (type == U_GENERATE_REUSABLE)
return cached_nr >= nr;
else
return cached_nr == nr;
}
static enum pipe_error
retrieve_or_generate_indices(struct svga_hwtnl *hwtnl,
unsigned prim,
unsigned gen_type,
unsigned gen_nr,
unsigned gen_size,
u_generate_func generate,
struct pipe_resource **out_buf)
{
enum pipe_error ret = PIPE_OK;
int i;
for (i = 0; i < IDX_CACHE_MAX; i++) {
if (hwtnl->index_cache[prim][i].buffer != NULL &&
hwtnl->index_cache[prim][i].generate == generate) {
if (compare(hwtnl->index_cache[prim][i].gen_nr, gen_nr, gen_type)) {
pipe_resource_reference(out_buf,
hwtnl->index_cache[prim][i].buffer);
if (DBG)
debug_printf("%s retrieve %d/%d\n", __FUNCTION__, i, gen_nr);
return PIPE_OK;
}
else if (gen_type == U_GENERATE_REUSABLE) {
pipe_resource_reference(&hwtnl->index_cache[prim][i].buffer,
NULL);
if (DBG)
debug_printf("%s discard %d/%d\n", __FUNCTION__,
i, hwtnl->index_cache[prim][i].gen_nr);
break;
}
}
}
if (i == IDX_CACHE_MAX) {
unsigned smallest = 0;
unsigned smallest_size = ~0;
for (i = 0; i < IDX_CACHE_MAX && smallest_size; i++) {
if (hwtnl->index_cache[prim][i].buffer == NULL) {
smallest = i;
smallest_size = 0;
}
else if (hwtnl->index_cache[prim][i].gen_nr < smallest) {
smallest = i;
smallest_size = hwtnl->index_cache[prim][i].gen_nr;
}
}
assert(smallest != IDX_CACHE_MAX);
pipe_resource_reference(&hwtnl->index_cache[prim][smallest].buffer,
NULL);
if (DBG)
debug_printf("%s discard smallest %d/%d\n", __FUNCTION__,
smallest, smallest_size);
i = smallest;
}
ret = generate_indices(hwtnl, gen_nr, gen_size, generate, out_buf);
if (ret != PIPE_OK)
return ret;
hwtnl->index_cache[prim][i].generate = generate;
hwtnl->index_cache[prim][i].gen_nr = gen_nr;
pipe_resource_reference(&hwtnl->index_cache[prim][i].buffer, *out_buf);
if (DBG)
debug_printf("%s cache %d/%d\n", __FUNCTION__,
i, hwtnl->index_cache[prim][i].gen_nr);
return PIPE_OK;
}
static enum pipe_error
simple_draw_arrays(struct svga_hwtnl *hwtnl,
unsigned prim, unsigned start, unsigned count,
unsigned start_instance, unsigned instance_count)
{
SVGA3dPrimitiveRange range;
unsigned hw_prim;
unsigned hw_count;
hw_prim = svga_translate_prim(prim, count, &hw_count);
if (hw_count == 0)
return PIPE_ERROR_BAD_INPUT;
range.primType = hw_prim;
range.primitiveCount = hw_count;
range.indexArray.surfaceId = SVGA3D_INVALID_ID;
range.indexArray.offset = 0;
range.indexArray.stride = 0;
range.indexWidth = 0;
range.indexBias = start;
/* Min/max index should be calculated prior to applying bias, so we
* end up with min_index = 0, max_index = count - 1 and everybody
* looking at those numbers knows to adjust them by
* range.indexBias.
*/
return svga_hwtnl_prim(hwtnl, &range, count,
0, count - 1, NULL,
start_instance, instance_count);
}
enum pipe_error
svga_hwtnl_draw_arrays(struct svga_hwtnl *hwtnl,
unsigned prim, unsigned start, unsigned count,
unsigned start_instance, unsigned instance_count)
{
unsigned gen_prim, gen_size, gen_nr, gen_type;
u_generate_func gen_func;
enum pipe_error ret = PIPE_OK;
if (hwtnl->api_fillmode != PIPE_POLYGON_MODE_FILL &&
prim >= PIPE_PRIM_TRIANGLES) {
/* Convert unfilled polygons into points, lines, triangles */
gen_type = u_unfilled_generator(prim,
start,
count,
hwtnl->api_fillmode,
&gen_prim,
&gen_size, &gen_nr, &gen_func);
}
else {
/* Convert PIPE_PRIM_LINE_LOOP to PIPE_PRIM_LINESTRIP,
* convert PIPE_PRIM_POLYGON to PIPE_PRIM_TRIANGLE_FAN,
* etc, if needed (as determined by svga_hw_prims mask).
*/
gen_type = u_index_generator(svga_hw_prims,
prim,
start,
count,
hwtnl->api_pv,
hwtnl->hw_pv,
&gen_prim, &gen_size, &gen_nr, &gen_func);
}
if (gen_type == U_GENERATE_LINEAR) {
return simple_draw_arrays(hwtnl, gen_prim, start, count,
start_instance, instance_count);
}
else {
struct pipe_resource *gen_buf = NULL;
/* Need to draw as indexed primitive.
* Potentially need to run the gen func to build an index buffer.
*/
ret = retrieve_or_generate_indices(hwtnl,
prim,
gen_type,
gen_nr,
gen_size, gen_func, &gen_buf);
if (ret != PIPE_OK)
goto done;
ret = svga_hwtnl_simple_draw_range_elements(hwtnl,
gen_buf,
gen_size,
start,
0,
count - 1,
gen_prim, 0, gen_nr,
start_instance,
instance_count);
if (ret != PIPE_OK)
goto done;
done:
if (gen_buf)
pipe_resource_reference(&gen_buf, NULL);
return ret;
}
}
|
