summaryrefslogtreecommitdiffstats
path: root/src/gallium/drivers/r300/r300_screen_buffer.c
blob: de557b577769aa99bd094a63cfd16eac73d09e95 (plain)
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
/*
 * Copyright 2010 Red Hat Inc.
 *
 * 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
 * on the rights to use, copy, modify, merge, publish, distribute, sub
 * license, 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 (including the next
 * paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS 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.
 *
 * Authors: Dave Airlie
 */

#include <stdio.h>

#include "util/u_inlines.h"
#include "util/u_memory.h"
#include "util/u_upload_mgr.h"
#include "util/u_math.h"

#include "r300_screen_buffer.h"

void r300_upload_index_buffer(struct r300_context *r300,
			      struct pipe_resource **index_buffer,
			      unsigned index_size, unsigned *start,
			      unsigned count, const uint8_t *ptr)
{
    unsigned index_offset;

    *index_buffer = NULL;

    u_upload_data(r300->uploader,
                  0, count * index_size,
                  ptr + (*start * index_size),
                  &index_offset,
                  index_buffer);

    *start = index_offset / index_size;
}

static void r300_buffer_destroy(struct pipe_screen *screen,
				struct pipe_resource *buf)
{
    struct r300_resource *rbuf = r300_resource(buf);

    align_free(rbuf->malloced_buffer);

    if (rbuf->buf)
        pb_reference(&rbuf->buf, NULL);

    FREE(rbuf);
}

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 )
{
    struct r300_context *r300 = r300_context(context);
    struct radeon_winsys *rws = r300->screen->rws;
    struct r300_resource *rbuf = r300_resource(resource);
    struct pipe_transfer *transfer;
    uint8_t *map;

    transfer = util_slab_alloc(&r300->pool_transfers);
    transfer->resource = resource;
    transfer->level = level;
    transfer->usage = usage;
    transfer->box = *box;
    transfer->stride = 0;
    transfer->layer_stride = 0;

    if (rbuf->malloced_buffer) {
        *ptransfer = transfer;
        return rbuf->malloced_buffer + box->x;
    }

    if (usage & PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE &&
        !(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) {
        assert(usage & PIPE_TRANSFER_WRITE);

        /* Check if mapping this buffer would cause waiting for the GPU. */
        if (r300->rws->cs_is_buffer_referenced(r300->cs, rbuf->cs_buf, RADEON_USAGE_READWRITE) ||
            r300->rws->buffer_is_busy(rbuf->buf, RADEON_USAGE_READWRITE)) {
            unsigned i;
            struct pb_buffer *new_buf;

            /* Create a new one in the same pipe_resource. */
            new_buf = r300->rws->buffer_create(r300->rws, rbuf->b.b.width0,
                                               R300_BUFFER_ALIGNMENT, TRUE,
                                               rbuf->domain, 0);
            if (new_buf) {
                /* Discard the old buffer. */
                pb_reference(&rbuf->buf, NULL);
                rbuf->buf = new_buf;
                rbuf->cs_buf = r300->rws->buffer_get_cs_handle(rbuf->buf);

                /* We changed the buffer, now we need to bind it where the old one was bound. */
                for (i = 0; i < r300->nr_vertex_buffers; i++) {
                    if (r300->vertex_buffer[i].buffer == &rbuf->b.b) {
                        r300->vertex_arrays_dirty = TRUE;
                        break;
                    }
                }
            }
        }
    }

    /* Buffers are never used for write, therefore mapping for read can be
     * unsynchronized. */
    if (!(usage & PIPE_TRANSFER_WRITE)) {
       usage |= PIPE_TRANSFER_UNSYNCHRONIZED;
    }

    map = rws->buffer_map(rbuf->cs_buf, r300->cs, usage);

    if (map == NULL) {
        util_slab_free(&r300->pool_transfers, transfer);
        return NULL;
    }

    *ptransfer = transfer;
    return map + box->x;
}

static void r300_buffer_transfer_unmap( struct pipe_context *pipe,
                                        struct pipe_transfer *transfer )
{
    struct r300_context *r300 = r300_context(pipe);

    util_slab_free(&r300->pool_transfers, transfer);
}

static const struct u_resource_vtbl r300_buffer_vtbl =
{
   NULL,                               /* get_handle */
   r300_buffer_destroy,                /* resource_destroy */
   r300_buffer_transfer_map,           /* transfer_map */
   NULL,                               /* transfer_flush_region */
   r300_buffer_transfer_unmap,         /* transfer_unmap */
   NULL   /* transfer_inline_write */
};

struct pipe_resource *r300_buffer_create(struct pipe_screen *screen,
					 const struct pipe_resource *templ)
{
    struct r300_screen *r300screen = r300_screen(screen);
    struct r300_resource *rbuf;

    rbuf = MALLOC_STRUCT(r300_resource);

    rbuf->b.b = *templ;
    rbuf->b.vtbl = &r300_buffer_vtbl;
    pipe_reference_init(&rbuf->b.b.reference, 1);
    rbuf->b.b.screen = screen;
    rbuf->domain = RADEON_DOMAIN_GTT;
    rbuf->buf = NULL;
    rbuf->malloced_buffer = NULL;

    /* Allocate constant buffers and SWTCL vertex and index buffers in RAM.
     * Note that uploaded index buffers use the flag PIPE_BIND_CUSTOM, so that
     * we can distinguish them from user-created buffers.
     */
    if (templ->bind & PIPE_BIND_CONSTANT_BUFFER ||
        (!r300screen->caps.has_tcl && !(templ->bind & PIPE_BIND_CUSTOM))) {
        rbuf->malloced_buffer = align_malloc(templ->width0, 64);
        return &rbuf->b.b;
    }

    rbuf->buf =
        r300screen->rws->buffer_create(r300screen->rws, rbuf->b.b.width0,
                                       R300_BUFFER_ALIGNMENT, TRUE,
                                       rbuf->domain, 0);
    if (!rbuf->buf) {
        FREE(rbuf);
        return NULL;
    }

    rbuf->cs_buf =
        r300screen->rws->buffer_get_cs_handle(rbuf->buf);

    return &rbuf->b.b;
}