2 * Copyright 2010 Red Hat Inc.
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:
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
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.
23 * Authors: Dave Airlie
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"
33 #include "r300_screen_buffer.h"
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
)
40 unsigned index_offset
;
44 u_upload_data(r300
->uploader
,
45 0, count
* index_size
,
46 ptr
+ (*start
* index_size
),
50 *start
= index_offset
/ index_size
;
53 static void r300_buffer_destroy(struct pipe_screen
*screen
,
54 struct pipe_resource
*buf
)
56 struct r300_resource
*rbuf
= r300_resource(buf
);
58 align_free(rbuf
->malloced_buffer
);
61 pb_reference(&rbuf
->buf
, NULL
);
67 r300_buffer_transfer_map( struct pipe_context
*context
,
68 struct pipe_resource
*resource
,
71 const struct pipe_box
*box
,
72 struct pipe_transfer
**ptransfer
)
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
;
80 transfer
= util_slab_alloc(&r300
->pool_transfers
);
81 transfer
->resource
= resource
;
82 transfer
->level
= level
;
83 transfer
->usage
= usage
;
86 transfer
->layer_stride
= 0;
88 if (rbuf
->malloced_buffer
) {
89 *ptransfer
= transfer
;
90 return rbuf
->malloced_buffer
+ box
->x
;
93 if (usage
& PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE
&&
94 !(usage
& PIPE_TRANSFER_UNSYNCHRONIZED
)) {
95 assert(usage
& PIPE_TRANSFER_WRITE
);
97 /* Check if mapping this buffer would cause waiting for the GPU. */
98 if (r300
->rws
->cs_is_buffer_referenced(r300
->cs
, rbuf
->cs_buf
, RADEON_USAGE_READWRITE
) ||
99 !r300
->rws
->buffer_wait(rbuf
->buf
, 0, RADEON_USAGE_READWRITE
)) {
101 struct pb_buffer
*new_buf
;
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
, TRUE
,
108 /* Discard the old buffer. */
109 pb_reference(&rbuf
->buf
, NULL
);
111 rbuf
->cs_buf
= r300
->rws
->buffer_get_cs_handle(rbuf
->buf
);
113 /* We changed the buffer, now we need to bind it where the old one was bound. */
114 for (i
= 0; i
< r300
->nr_vertex_buffers
; i
++) {
115 if (r300
->vertex_buffer
[i
].buffer
== &rbuf
->b
.b
) {
116 r300
->vertex_arrays_dirty
= TRUE
;
124 /* Buffers are never used for write, therefore mapping for read can be
126 if (!(usage
& PIPE_TRANSFER_WRITE
)) {
127 usage
|= PIPE_TRANSFER_UNSYNCHRONIZED
;
130 map
= rws
->buffer_map(rbuf
->cs_buf
, r300
->cs
, usage
);
133 util_slab_free(&r300
->pool_transfers
, transfer
);
137 *ptransfer
= transfer
;
141 static void r300_buffer_transfer_unmap( struct pipe_context
*pipe
,
142 struct pipe_transfer
*transfer
)
144 struct r300_context
*r300
= r300_context(pipe
);
146 util_slab_free(&r300
->pool_transfers
, transfer
);
149 static const struct u_resource_vtbl r300_buffer_vtbl
=
151 NULL
, /* get_handle */
152 r300_buffer_destroy
, /* resource_destroy */
153 r300_buffer_transfer_map
, /* transfer_map */
154 NULL
, /* transfer_flush_region */
155 r300_buffer_transfer_unmap
, /* transfer_unmap */
156 NULL
/* transfer_inline_write */
159 struct pipe_resource
*r300_buffer_create(struct pipe_screen
*screen
,
160 const struct pipe_resource
*templ
)
162 struct r300_screen
*r300screen
= r300_screen(screen
);
163 struct r300_resource
*rbuf
;
165 rbuf
= MALLOC_STRUCT(r300_resource
);
168 rbuf
->b
.vtbl
= &r300_buffer_vtbl
;
169 pipe_reference_init(&rbuf
->b
.b
.reference
, 1);
170 rbuf
->b
.b
.screen
= screen
;
171 rbuf
->domain
= RADEON_DOMAIN_GTT
;
173 rbuf
->malloced_buffer
= NULL
;
175 /* Allocate constant buffers and SWTCL vertex and index buffers in RAM.
176 * Note that uploaded index buffers use the flag PIPE_BIND_CUSTOM, so that
177 * we can distinguish them from user-created buffers.
179 if (templ
->bind
& PIPE_BIND_CONSTANT_BUFFER
||
180 (!r300screen
->caps
.has_tcl
&& !(templ
->bind
& PIPE_BIND_CUSTOM
))) {
181 rbuf
->malloced_buffer
= align_malloc(templ
->width0
, 64);
186 r300screen
->rws
->buffer_create(r300screen
->rws
, rbuf
->b
.b
.width0
,
187 R300_BUFFER_ALIGNMENT
, TRUE
,
195 r300screen
->rws
->buffer_get_cs_handle(rbuf
->buf
);