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
|
/**********************************************************
* 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 "util/u_inlines.h"
#include "util/u_prim.h"
#include "util/u_upload_mgr.h"
#include "indices/u_indices.h"
#include "svga_cmd.h"
#include "svga_draw.h"
#include "svga_draw_private.h"
#include "svga_resource_buffer.h"
#include "svga_winsys.h"
#include "svga_context.h"
#include "svga_hw_reg.h"
/**
* Return a new index buffer which contains a translation of the original
* index buffer. An example of a translation is converting from QUAD
* primitives to TRIANGLE primitives. Each set of four indexes for a quad
* will be converted to six indices for two triangles.
*
* Before generating the new index buffer we'll check if the incoming
* buffer already has a translated buffer that can be re-used.
* This benefits demos like Cinebench R15 which has many
* glDrawElements(GL_QUADS) commands (we can't draw quads natively).
*
* \param offset offset in bytes to first index to translate in src buffer
* \param orig_prim original primitive type (like PIPE_PRIM_QUADS)
* \param gen_prim new/generated primitive type (like PIPE_PRIM_TRIANGLES)
* \param orig_nr number of indexes to translate in source buffer
* \param gen_nr number of indexes to write into new/dest buffer
* \param index_size bytes per index (2 or 4)
* \param translate the translation function from the u_translate module
* \param out_buf returns the new/translated index buffer
* \return error code to indicate success failure
*/
static enum pipe_error
translate_indices(struct svga_hwtnl *hwtnl, struct pipe_resource *src,
unsigned offset,
enum pipe_prim_type orig_prim, enum pipe_prim_type gen_prim,
unsigned orig_nr, unsigned gen_nr,
unsigned index_size,
u_translate_func translate, struct pipe_resource **out_buf)
{
struct pipe_context *pipe = &hwtnl->svga->pipe;
struct svga_screen *screen = svga_screen(pipe->screen);
struct svga_buffer *src_sbuf = svga_buffer(src);
struct pipe_transfer *src_transfer = NULL;
struct pipe_transfer *dst_transfer = NULL;
unsigned size = index_size * gen_nr;
const void *src_map = NULL;
struct pipe_resource *dst = NULL;
void *dst_map = NULL;
assert(index_size == 2 || index_size == 4);
if (!screen->debug.no_cache_index_buffers) {
/* Check if we already have a translated index buffer */
if (src_sbuf->translated_indices.buffer &&
src_sbuf->translated_indices.orig_prim == orig_prim &&
src_sbuf->translated_indices.new_prim == gen_prim &&
src_sbuf->translated_indices.offset == offset &&
src_sbuf->translated_indices.count == orig_nr &&
src_sbuf->translated_indices.index_size == index_size) {
pipe_resource_reference(out_buf, src_sbuf->translated_indices.buffer);
return PIPE_OK;
}
}
/* Need to trim vertex count to make sure we don't write too much data
* to the dst buffer in the translate() call.
*/
u_trim_pipe_prim(gen_prim, &gen_nr);
size = index_size * gen_nr;
dst = pipe_buffer_create(pipe->screen,
PIPE_BIND_INDEX_BUFFER, PIPE_USAGE_DEFAULT, size);
if (!dst)
goto fail;
src_map = pipe_buffer_map(pipe, src, PIPE_TRANSFER_READ, &src_transfer);
if (!src_map)
goto fail;
dst_map = pipe_buffer_map(pipe, dst, PIPE_TRANSFER_WRITE, &dst_transfer);
if (!dst_map)
goto fail;
translate((const char *) src_map + offset, 0, 0, gen_nr, 0, dst_map);
pipe_buffer_unmap(pipe, src_transfer);
pipe_buffer_unmap(pipe, dst_transfer);
*out_buf = dst;
if (!screen->debug.no_cache_index_buffers) {
/* Save the new, translated index buffer in the hope we can use it
* again in the future.
*/
pipe_resource_reference(&src_sbuf->translated_indices.buffer, dst);
src_sbuf->translated_indices.orig_prim = orig_prim;
src_sbuf->translated_indices.new_prim = gen_prim;
src_sbuf->translated_indices.offset = offset;
src_sbuf->translated_indices.count = orig_nr;
src_sbuf->translated_indices.index_size = index_size;
}
return PIPE_OK;
fail:
if (src_map)
pipe_buffer_unmap(pipe, src_transfer);
if (dst_map)
pipe_buffer_unmap(pipe, dst_transfer);
if (dst)
pipe->screen->resource_destroy(pipe->screen, dst);
return PIPE_ERROR_OUT_OF_MEMORY;
}
enum pipe_error
svga_hwtnl_simple_draw_range_elements(struct svga_hwtnl *hwtnl,
struct pipe_resource *index_buffer,
unsigned index_size, int index_bias,
unsigned min_index, unsigned max_index,
enum pipe_prim_type prim, unsigned start,
unsigned count,
unsigned start_instance,
unsigned instance_count)
{
SVGA3dPrimitiveRange range;
unsigned hw_prim;
unsigned hw_count;
unsigned index_offset = start * index_size;
hw_prim = svga_translate_prim(prim, count, &hw_count);
if (hw_count == 0)
return PIPE_OK; /* nothing to draw */
range.primType = hw_prim;
range.primitiveCount = hw_count;
range.indexArray.offset = index_offset;
range.indexArray.stride = index_size;
range.indexWidth = index_size;
range.indexBias = index_bias;
return svga_hwtnl_prim(hwtnl, &range, count,
min_index, max_index, index_buffer,
start_instance, instance_count);
}
enum pipe_error
svga_hwtnl_draw_range_elements(struct svga_hwtnl *hwtnl,
struct pipe_resource *index_buffer,
unsigned index_size, int index_bias,
unsigned min_index, unsigned max_index,
enum pipe_prim_type prim, unsigned start, unsigned count,
unsigned start_instance, unsigned instance_count)
{
enum pipe_prim_type gen_prim;
unsigned gen_size, gen_nr;
enum indices_mode gen_type;
u_translate_func gen_func;
enum pipe_error ret = PIPE_OK;
SVGA_STATS_TIME_PUSH(svga_sws(hwtnl->svga),
SVGA_STATS_TIME_HWTNLDRAWELEMENTS);
if (svga_need_unfilled_fallback(hwtnl, prim)) {
gen_type = u_unfilled_translator(prim,
index_size,
count,
hwtnl->api_fillmode,
&gen_prim,
&gen_size, &gen_nr, &gen_func);
}
else {
gen_type = u_index_translator(svga_hw_prims,
prim,
index_size,
count,
hwtnl->api_pv,
hwtnl->hw_pv,
PR_DISABLE,
&gen_prim, &gen_size, &gen_nr, &gen_func);
}
if (gen_type == U_TRANSLATE_MEMCPY) {
/* No need for translation, just pass through to hardware:
*/
ret = svga_hwtnl_simple_draw_range_elements(hwtnl, index_buffer,
index_size,
index_bias,
min_index,
max_index,
gen_prim, start, count,
start_instance,
instance_count);
}
else {
struct pipe_resource *gen_buf = NULL;
/* Need to allocate a new index buffer and run the translate
* func to populate it. Could potentially cache this translated
* index buffer with the original to avoid future
* re-translations. Not much point if we're just accelerating
* GL though, as index buffers are typically used only once
* there.
*/
ret = translate_indices(hwtnl,
index_buffer,
start * index_size,
prim, gen_prim,
count, gen_nr, gen_size,
gen_func, &gen_buf);
if (ret == PIPE_OK) {
ret = svga_hwtnl_simple_draw_range_elements(hwtnl,
gen_buf,
gen_size,
index_bias,
min_index,
max_index,
gen_prim, 0, gen_nr,
start_instance,
instance_count);
}
if (gen_buf) {
pipe_resource_reference(&gen_buf, NULL);
}
}
SVGA_STATS_TIME_POP(svga_sws(hwtnl->svga));
return ret;
}
|
