1 /*
2 * Copyright 2010 Red Hat Inc.
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 * Authors: Dave Airlie
24 */
25
26 #include <stdio.h>
27
28 #include "util/u_inlines.h"
29 #include "util/u_memory.h"
30 #include "util/u_upload_mgr.h"
31 #include "util/u_math.h"
32
33 #include "r300_screen_buffer.h"
34
r300_upload_index_buffer(struct r300_context * r300,struct pipe_resource ** index_buffer,unsigned index_size,unsigned * start,unsigned count,const uint8_t * ptr)35 void r300_upload_index_buffer(struct r300_context *r300,
36 struct pipe_resource **index_buffer,
37 unsigned index_size, unsigned *start,
38 unsigned count, const uint8_t *ptr)
39 {
40 unsigned index_offset;
41
42 *index_buffer = NULL;
43
44 u_upload_data(r300->uploader,
45 0, count * index_size, 4,
46 ptr + (*start * index_size),
47 &index_offset,
48 index_buffer);
49
50 *start = index_offset / index_size;
51 }
52
r300_resource_destroy(struct pipe_screen * screen,struct pipe_resource * buf)53 void r300_resource_destroy(struct pipe_screen *screen,
54 struct pipe_resource *buf)
55 {
56 if (buf->target == PIPE_BUFFER) {
57 struct r300_resource *rbuf = r300_resource(buf);
58
59 align_free(rbuf->malloced_buffer);
60
61 if (rbuf->buf)
62 pb_reference(&rbuf->buf, NULL);
63
64 FREE(rbuf);
65 } else {
66 struct r300_screen *rscreen = r300_screen(screen);
67 struct r300_resource* tex = (struct r300_resource*)buf;
68
69 if (tex->tex.cmask_dwords) {
70 mtx_lock(&rscreen->cmask_mutex);
71 if (buf == rscreen->cmask_resource) {
72 rscreen->cmask_resource = NULL;
73 }
74 mtx_unlock(&rscreen->cmask_mutex);
75 }
76 pb_reference(&tex->buf, NULL);
77 FREE(tex);
78 }
79 }
80
81 void *
r300_buffer_transfer_map(struct pipe_context * context,struct pipe_resource * resource,unsigned level,unsigned usage,const struct pipe_box * box,struct pipe_transfer ** ptransfer)82 r300_buffer_transfer_map( struct pipe_context *context,
83 struct pipe_resource *resource,
84 unsigned level,
85 unsigned usage,
86 const struct pipe_box *box,
87 struct pipe_transfer **ptransfer )
88 {
89 struct r300_context *r300 = r300_context(context);
90 struct radeon_winsys *rws = r300->screen->rws;
91 struct r300_resource *rbuf = r300_resource(resource);
92 struct pipe_transfer *transfer;
93 uint8_t *map;
94
95 transfer = slab_alloc(&r300->pool_transfers);
96 transfer->resource = resource;
97 transfer->level = level;
98 transfer->usage = usage;
99 transfer->box = *box;
100 transfer->stride = 0;
101 transfer->layer_stride = 0;
102
103 if (rbuf->malloced_buffer) {
104 *ptransfer = transfer;
105 return rbuf->malloced_buffer + box->x;
106 }
107
108 if (usage & PIPE_MAP_DISCARD_WHOLE_RESOURCE &&
109 !(usage & PIPE_MAP_UNSYNCHRONIZED)) {
110 assert(usage & PIPE_MAP_WRITE);
111
112 /* Check if mapping this buffer would cause waiting for the GPU. */
113 if (r300->rws->cs_is_buffer_referenced(&r300->cs, rbuf->buf, RADEON_USAGE_READWRITE) ||
114 !r300->rws->buffer_wait(r300->rws, rbuf->buf, 0, RADEON_USAGE_READWRITE)) {
115 unsigned i;
116 struct pb_buffer *new_buf;
117
118 /* Create a new one in the same pipe_resource. */
119 new_buf = r300->rws->buffer_create(r300->rws, rbuf->b.width0,
120 R300_BUFFER_ALIGNMENT,
121 rbuf->domain,
122 RADEON_FLAG_NO_INTERPROCESS_SHARING);
123 if (new_buf) {
124 /* Discard the old buffer. */
125 pb_reference(&rbuf->buf, NULL);
126 rbuf->buf = new_buf;
127
128 /* We changed the buffer, now we need to bind it where the old one was bound. */
129 for (i = 0; i < r300->nr_vertex_buffers; i++) {
130 if (r300->vertex_buffer[i].buffer.resource == &rbuf->b) {
131 r300->vertex_arrays_dirty = TRUE;
132 break;
133 }
134 }
135 }
136 }
137 }
138
139 /* Buffers are never used for write, therefore mapping for read can be
140 * unsynchronized. */
141 if (!(usage & PIPE_MAP_WRITE)) {
142 usage |= PIPE_MAP_UNSYNCHRONIZED;
143 }
144
145 map = rws->buffer_map(rws, rbuf->buf, &r300->cs, usage);
146
147 if (!map) {
148 slab_free(&r300->pool_transfers, transfer);
149 return NULL;
150 }
151
152 *ptransfer = transfer;
153 return map + box->x;
154 }
155
r300_buffer_transfer_unmap(struct pipe_context * pipe,struct pipe_transfer * transfer)156 void r300_buffer_transfer_unmap( struct pipe_context *pipe,
157 struct pipe_transfer *transfer )
158 {
159 struct r300_context *r300 = r300_context(pipe);
160
161 slab_free(&r300->pool_transfers, transfer);
162 }
163
r300_buffer_create(struct pipe_screen * screen,const struct pipe_resource * templ)164 struct pipe_resource *r300_buffer_create(struct pipe_screen *screen,
165 const struct pipe_resource *templ)
166 {
167 struct r300_screen *r300screen = r300_screen(screen);
168 struct r300_resource *rbuf;
169
170 rbuf = MALLOC_STRUCT(r300_resource);
171
172 rbuf->b = *templ;
173 pipe_reference_init(&rbuf->b.reference, 1);
174 rbuf->b.screen = screen;
175 rbuf->domain = RADEON_DOMAIN_GTT;
176 rbuf->buf = NULL;
177 rbuf->malloced_buffer = NULL;
178
179 /* Allocate constant buffers and SWTCL vertex and index buffers in RAM.
180 * Note that uploaded index buffers use the flag PIPE_BIND_CUSTOM, so that
181 * we can distinguish them from user-created buffers.
182 */
183 if (templ->bind & PIPE_BIND_CONSTANT_BUFFER ||
184 (!r300screen->caps.has_tcl && !(templ->bind & PIPE_BIND_CUSTOM))) {
185 rbuf->malloced_buffer = align_malloc(templ->width0, 64);
186 return &rbuf->b;
187 }
188
189 rbuf->buf =
190 r300screen->rws->buffer_create(r300screen->rws, rbuf->b.width0,
191 R300_BUFFER_ALIGNMENT,
192 rbuf->domain,
193 RADEON_FLAG_NO_INTERPROCESS_SHARING);
194 if (!rbuf->buf) {
195 FREE(rbuf);
196 return NULL;
197 }
198 return &rbuf->b;
199 }
200