1 /*
2 * Copyright 2010 Marek Olšák <maraeo@gmail.com>
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * on the rights to use, copy, modify, merge, publish, distribute, sub
8 * license, and/or sell copies of the Software, and to permit persons to whom
9 * the Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE. */
22
23 #include "pipe/p_context.h"
24 #include "util/u_index_modify.h"
25 #include "util/u_inlines.h"
26
27 /* Ubyte indices. */
28
util_shorten_ubyte_elts_to_userptr(struct pipe_context * context,struct pipe_index_buffer * ib,int index_bias,unsigned start,unsigned count,void * out)29 void util_shorten_ubyte_elts_to_userptr(struct pipe_context *context,
30 struct pipe_index_buffer *ib,
31 int index_bias,
32 unsigned start,
33 unsigned count,
34 void *out)
35 {
36 struct pipe_transfer *src_transfer = NULL;
37 const unsigned char *in_map;
38 unsigned short *out_map = out;
39 unsigned i;
40
41 if (ib->user_buffer) {
42 in_map = ib->user_buffer;
43 } else {
44 in_map = pipe_buffer_map(context, ib->buffer,
45 PIPE_TRANSFER_READ |
46 PIPE_TRANSFER_UNSYNCHRONIZED,
47 &src_transfer);
48 }
49 in_map += start;
50
51 for (i = 0; i < count; i++) {
52 *out_map = (unsigned short)(*in_map + index_bias);
53 in_map++;
54 out_map++;
55 }
56
57 if (src_transfer)
58 pipe_buffer_unmap(context, src_transfer);
59 }
60
util_shorten_ubyte_elts(struct pipe_context * context,struct pipe_index_buffer * ib,struct pipe_resource ** out_buf,int index_bias,unsigned start,unsigned count)61 void util_shorten_ubyte_elts(struct pipe_context *context,
62 struct pipe_index_buffer *ib,
63 struct pipe_resource **out_buf,
64 int index_bias,
65 unsigned start,
66 unsigned count)
67 {
68 struct pipe_resource* new_elts;
69 unsigned short *out_map;
70 struct pipe_transfer *dst_transfer;
71
72 new_elts = pipe_buffer_create(context->screen,
73 PIPE_BIND_INDEX_BUFFER,
74 PIPE_USAGE_STATIC,
75 2 * count);
76
77 out_map = pipe_buffer_map(context, new_elts, PIPE_TRANSFER_WRITE,
78 &dst_transfer);
79 util_shorten_ubyte_elts_to_userptr(context, ib, index_bias,
80 start, count, out_map);
81 pipe_buffer_unmap(context, dst_transfer);
82
83 pipe_resource_reference(out_buf, NULL);
84 *out_buf = new_elts;
85 }
86
87
88 /* Ushort indices. */
89
util_rebuild_ushort_elts_to_userptr(struct pipe_context * context,struct pipe_index_buffer * ib,int index_bias,unsigned start,unsigned count,void * out)90 void util_rebuild_ushort_elts_to_userptr(struct pipe_context *context,
91 struct pipe_index_buffer *ib,
92 int index_bias,
93 unsigned start, unsigned count,
94 void *out)
95 {
96 struct pipe_transfer *in_transfer = NULL;
97 const unsigned short *in_map;
98 unsigned short *out_map = out;
99 unsigned i;
100
101 if (ib->user_buffer) {
102 in_map = ib->user_buffer;
103 } else {
104 in_map = pipe_buffer_map(context, ib->buffer,
105 PIPE_TRANSFER_READ |
106 PIPE_TRANSFER_UNSYNCHRONIZED,
107 &in_transfer);
108 }
109 in_map += start;
110
111 for (i = 0; i < count; i++) {
112 *out_map = (unsigned short)(*in_map + index_bias);
113 in_map++;
114 out_map++;
115 }
116
117 if (in_transfer)
118 pipe_buffer_unmap(context, in_transfer);
119 }
120
util_rebuild_ushort_elts(struct pipe_context * context,struct pipe_index_buffer * ib,struct pipe_resource ** out_buf,int index_bias,unsigned start,unsigned count)121 void util_rebuild_ushort_elts(struct pipe_context *context,
122 struct pipe_index_buffer *ib,
123 struct pipe_resource **out_buf,
124 int index_bias,
125 unsigned start, unsigned count)
126 {
127 struct pipe_transfer *out_transfer = NULL;
128 struct pipe_resource *new_elts;
129 unsigned short *out_map;
130
131 new_elts = pipe_buffer_create(context->screen,
132 PIPE_BIND_INDEX_BUFFER,
133 PIPE_USAGE_STATIC,
134 2 * count);
135
136 out_map = pipe_buffer_map(context, new_elts,
137 PIPE_TRANSFER_WRITE, &out_transfer);
138 util_rebuild_ushort_elts_to_userptr(context, ib, index_bias,
139 start, count, out_map);
140 pipe_buffer_unmap(context, out_transfer);
141
142 pipe_resource_reference(out_buf, NULL);
143 *out_buf = new_elts;
144 }
145
146
147 /* Uint indices. */
148
util_rebuild_uint_elts_to_userptr(struct pipe_context * context,struct pipe_index_buffer * ib,int index_bias,unsigned start,unsigned count,void * out)149 void util_rebuild_uint_elts_to_userptr(struct pipe_context *context,
150 struct pipe_index_buffer *ib,
151 int index_bias,
152 unsigned start, unsigned count,
153 void *out)
154 {
155 struct pipe_transfer *in_transfer = NULL;
156 const unsigned int *in_map;
157 unsigned int *out_map = out;
158 unsigned i;
159
160 if (ib->user_buffer) {
161 in_map = ib->user_buffer;
162 } else {
163 in_map = pipe_buffer_map(context, ib->buffer,
164 PIPE_TRANSFER_READ |
165 PIPE_TRANSFER_UNSYNCHRONIZED,
166 &in_transfer);
167 }
168 in_map += start;
169
170 for (i = 0; i < count; i++) {
171 *out_map = (unsigned int)(*in_map + index_bias);
172 in_map++;
173 out_map++;
174 }
175
176 if (in_transfer)
177 pipe_buffer_unmap(context, in_transfer);
178 }
179
util_rebuild_uint_elts(struct pipe_context * context,struct pipe_index_buffer * ib,struct pipe_resource ** out_buf,int index_bias,unsigned start,unsigned count)180 void util_rebuild_uint_elts(struct pipe_context *context,
181 struct pipe_index_buffer *ib,
182 struct pipe_resource **out_buf,
183 int index_bias,
184 unsigned start, unsigned count)
185 {
186 struct pipe_transfer *out_transfer = NULL;
187 struct pipe_resource *new_elts;
188 unsigned int *out_map;
189
190 new_elts = pipe_buffer_create(context->screen,
191 PIPE_BIND_INDEX_BUFFER,
192 PIPE_USAGE_STATIC,
193 2 * count);
194
195 out_map = pipe_buffer_map(context, new_elts,
196 PIPE_TRANSFER_WRITE, &out_transfer);
197 util_rebuild_uint_elts_to_userptr(context, ib, index_bias,
198 start, count, out_map);
199 pipe_buffer_unmap(context, out_transfer);
200
201 pipe_resource_reference(out_buf, NULL);
202 *out_buf = new_elts;
203 }
204