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_buffer_destroy(struct pipe_screen * screen,struct pipe_resource * buf)53 static void r300_buffer_destroy(struct pipe_screen *screen,
54 struct pipe_resource *buf)
55 {
56 struct r300_resource *rbuf = r300_resource(buf);
57
58 align_free(rbuf->malloced_buffer);
59
60 if (rbuf->buf)
61 pb_reference(&rbuf->buf, NULL);
62
63 FREE(rbuf);
64 }
65
66 static 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)67 r300_buffer_transfer_map( struct pipe_context *context,
68 struct pipe_resource *resource,
69 unsigned level,
70 unsigned usage,
71 const struct pipe_box *box,
72 struct pipe_transfer **ptransfer )
73 {
74 struct r300_context *r300 = r300_context(context);
75 struct radeon_winsys *rws = r300->screen->rws;
76 struct r300_resource *rbuf = r300_resource(resource);
77 struct pipe_transfer *transfer;
78 uint8_t *map;
79
80 transfer = slab_alloc(&r300->pool_transfers);
81 transfer->resource = resource;
82 transfer->level = level;
83 transfer->usage = usage;
84 transfer->box = *box;
85 transfer->stride = 0;
86 transfer->layer_stride = 0;
87
88 if (rbuf->malloced_buffer) {
89 *ptransfer = transfer;
90 return rbuf->malloced_buffer + box->x;
91 }
92
93 if (usage & PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE &&
94 !(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) {
95 assert(usage & PIPE_TRANSFER_WRITE);
96
97 /* Check if mapping this buffer would cause waiting for the GPU. */
98 if (r300->rws->cs_is_buffer_referenced(r300->cs, rbuf->buf, RADEON_USAGE_READWRITE) ||
99 !r300->rws->buffer_wait(rbuf->buf, 0, RADEON_USAGE_READWRITE)) {
100 unsigned i;
101 struct pb_buffer *new_buf;
102
103 /* Create a new one in the same pipe_resource. */
104 new_buf = r300->rws->buffer_create(r300->rws, rbuf->b.b.width0,
105 R300_BUFFER_ALIGNMENT,
106 rbuf->domain, 0);
107 if (new_buf) {
108 /* Discard the old buffer. */
109 pb_reference(&rbuf->buf, NULL);
110 rbuf->buf = new_buf;
111
112 /* We changed the buffer, now we need to bind it where the old one was bound. */
113 for (i = 0; i < r300->nr_vertex_buffers; i++) {
114 if (r300->vertex_buffer[i].buffer == &rbuf->b.b) {
115 r300->vertex_arrays_dirty = TRUE;
116 break;
117 }
118 }
119 }
120 }
121 }
122
123 /* Buffers are never used for write, therefore mapping for read can be
124 * unsynchronized. */
125 if (!(usage & PIPE_TRANSFER_WRITE)) {
126 usage |= PIPE_TRANSFER_UNSYNCHRONIZED;
127 }
128
129 map = rws->buffer_map(rbuf->buf, r300->cs, usage);
130
131 if (!map) {
132 slab_free(&r300->pool_transfers, transfer);
133 return NULL;
134 }
135
136 *ptransfer = transfer;
137 return map + box->x;
138 }
139
r300_buffer_transfer_unmap(struct pipe_context * pipe,struct pipe_transfer * transfer)140 static void r300_buffer_transfer_unmap( struct pipe_context *pipe,
141 struct pipe_transfer *transfer )
142 {
143 struct r300_context *r300 = r300_context(pipe);
144
145 slab_free(&r300->pool_transfers, transfer);
146 }
147
148 static const struct u_resource_vtbl r300_buffer_vtbl =
149 {
150 NULL, /* get_handle */
151 r300_buffer_destroy, /* resource_destroy */
152 r300_buffer_transfer_map, /* transfer_map */
153 NULL, /* transfer_flush_region */
154 r300_buffer_transfer_unmap, /* transfer_unmap */
155 };
156
r300_buffer_create(struct pipe_screen * screen,const struct pipe_resource * templ)157 struct pipe_resource *r300_buffer_create(struct pipe_screen *screen,
158 const struct pipe_resource *templ)
159 {
160 struct r300_screen *r300screen = r300_screen(screen);
161 struct r300_resource *rbuf;
162
163 rbuf = MALLOC_STRUCT(r300_resource);
164
165 rbuf->b.b = *templ;
166 rbuf->b.vtbl = &r300_buffer_vtbl;
167 pipe_reference_init(&rbuf->b.b.reference, 1);
168 rbuf->b.b.screen = screen;
169 rbuf->domain = RADEON_DOMAIN_GTT;
170 rbuf->buf = NULL;
171 rbuf->malloced_buffer = NULL;
172
173 /* Allocate constant buffers and SWTCL vertex and index buffers in RAM.
174 * Note that uploaded index buffers use the flag PIPE_BIND_CUSTOM, so that
175 * we can distinguish them from user-created buffers.
176 */
177 if (templ->bind & PIPE_BIND_CONSTANT_BUFFER ||
178 (!r300screen->caps.has_tcl && !(templ->bind & PIPE_BIND_CUSTOM))) {
179 rbuf->malloced_buffer = align_malloc(templ->width0, 64);
180 return &rbuf->b.b;
181 }
182
183 rbuf->buf =
184 r300screen->rws->buffer_create(r300screen->rws, rbuf->b.b.width0,
185 R300_BUFFER_ALIGNMENT,
186 rbuf->domain, 0);
187 if (!rbuf->buf) {
188 FREE(rbuf);
189 return NULL;
190 }
191 return &rbuf->b.b;
192 }
193