src/gallium/drivers/r300/r300_screen_buffer.c

   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
  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, uint8_t *ptr)
  39 {
  40     unsigned index_offset;
  41     boolean flushed;
  42
  43     *index_buffer = NULL;
  44
  45     u_upload_data(r300->vbuf_mgr->uploader,
  46                   0, count * index_size,
  47                   ptr + (*start * index_size),
  48                   &index_offset,
  49                   index_buffer, &flushed);
  50
  51     *start = index_offset / index_size;
  52 }
  53
  54 static void r300_buffer_destroy(struct pipe_screen *screen,
  55                                 struct pipe_resource *buf)
  56 {
  57     struct r300_screen *r300screen = r300_screen(screen);
  58     struct r300_resource *rbuf = r300_resource(buf);
  59
  60     if (rbuf->constant_buffer)
  61         FREE(rbuf->constant_buffer);
  62
  63     if (rbuf->buf)
  64         pb_reference(&rbuf->buf, NULL);
  65
  66     util_slab_free(&r300screen->pool_buffers, rbuf);
  67 }
  68
  69 static struct pipe_transfer*
  70 r300_buffer_get_transfer(struct pipe_context *context,
  71                          struct pipe_resource *resource,
  72                          unsigned level,
  73                          unsigned usage,
  74                          const struct pipe_box *box)
  75 {
  76    struct r300_context *r300 = r300_context(context);
  77    struct pipe_transfer *transfer =
  78          util_slab_alloc(&r300->pool_transfers);
  79
  80    transfer->resource = resource;
  81    transfer->level = level;
  82    transfer->usage = usage;
  83    transfer->box = *box;
  84    transfer->stride = 0;
  85    transfer->layer_stride = 0;
  86    transfer->data = NULL;
  87
  88    /* Note strides are zero, this is ok for buffers, but not for
  89     * textures 2d & higher at least.
  90     */
  91    return transfer;
  92 }
  93
  94 static void r300_buffer_transfer_destroy(struct pipe_context *pipe,
  95                                          struct pipe_transfer *transfer)
  96 {
  97    struct r300_context *r300 = r300_context(pipe);
  98    util_slab_free(&r300->pool_transfers, transfer);
  99 }
 100
 101 static void *
 102 r300_buffer_transfer_map( struct pipe_context *pipe,
 103                           struct pipe_transfer *transfer )
 104 {
 105     struct r300_context *r300 = r300_context(pipe);
 106     struct r300_screen *r300screen = r300_screen(pipe->screen);
 107     struct radeon_winsys *rws = r300screen->rws;
 108     struct r300_resource *rbuf = r300_resource(transfer->resource);
 109     uint8_t *map;
 110     enum pipe_transfer_usage usage;
 111
 112     if (rbuf->b.user_ptr)
 113         return (uint8_t *) rbuf->b.user_ptr + transfer->box.x;
 114     if (rbuf->constant_buffer)
 115         return (uint8_t *) rbuf->constant_buffer + transfer->box.x;
 116
 117     /* Buffers are never used for write, therefore mapping for read can be
 118      * unsynchronized. */
 119     usage = transfer->usage;
 120     if (!(usage & PIPE_TRANSFER_WRITE)) {
 121        usage |= PIPE_TRANSFER_UNSYNCHRONIZED;
 122     }
 123
 124     map = rws->buffer_map(rbuf->buf, r300->cs, usage);
 125
 126     if (map == NULL)
 127         return NULL;
 128
 129     return map + transfer->box.x;
 130 }
 131
 132 static void r300_buffer_transfer_unmap( struct pipe_context *pipe,
 133                             struct pipe_transfer *transfer )
 134 {
 135     struct r300_screen *r300screen = r300_screen(pipe->screen);
 136     struct radeon_winsys *rws = r300screen->rws;
 137     struct r300_resource *rbuf = r300_resource(transfer->resource);
 138
 139     if (rbuf->buf) {
 140         rws->buffer_unmap(rbuf->buf);
 141     }
 142 }
 143
 144 static void r300_buffer_transfer_inline_write(struct pipe_context *pipe,
 145                                               struct pipe_resource *resource,
 146                                               unsigned level,
 147                                               unsigned usage,
 148                                               const struct pipe_box *box,
 149                                               const void *data,
 150                                               unsigned stride,
 151                                               unsigned layer_stride)
 152 {
 153     struct r300_context *r300 = r300_context(pipe);
 154     struct radeon_winsys *rws = r300->screen->rws;
 155     struct r300_resource *rbuf = r300_resource(resource);
 156     uint8_t *map = NULL;
 157
 158     if (rbuf->constant_buffer) {
 159         memcpy(rbuf->constant_buffer + box->x, data, box->width);
 160         return;
 161     }
 162     assert(rbuf->b.user_ptr == NULL);
 163
 164     map = rws->buffer_map(rbuf->buf, r300->cs,
 165                           PIPE_TRANSFER_WRITE | PIPE_TRANSFER_DISCARD | usage);
 166
 167     memcpy(map + box->x, data, box->width);
 168
 169     rws->buffer_unmap(rbuf->buf);
 170 }
 171
 172 static const struct u_resource_vtbl r300_buffer_vtbl =
 173 {
 174    NULL,                               /* get_handle */
 175    r300_buffer_destroy,                /* resource_destroy */
 176    r300_buffer_get_transfer,           /* get_transfer */
 177    r300_buffer_transfer_destroy,       /* transfer_destroy */
 178    r300_buffer_transfer_map,           /* transfer_map */
 179    NULL,                               /* transfer_flush_region */
 180    r300_buffer_transfer_unmap,         /* transfer_unmap */
 181    r300_buffer_transfer_inline_write   /* transfer_inline_write */
 182 };
 183
 184 struct pipe_resource *r300_buffer_create(struct pipe_screen *screen,
 185                                          const struct pipe_resource *templ)
 186 {
 187     struct r300_screen *r300screen = r300_screen(screen);
 188     struct r300_resource *rbuf;
 189     unsigned alignment = 16;
 190
 191     rbuf = util_slab_alloc(&r300screen->pool_buffers);
 192
 193     rbuf->b.b.b = *templ;
 194     rbuf->b.b.vtbl = &r300_buffer_vtbl;
 195     pipe_reference_init(&rbuf->b.b.b.reference, 1);
 196     rbuf->b.b.b.screen = screen;
 197     rbuf->b.user_ptr = NULL;
 198     rbuf->domain = RADEON_DOMAIN_GTT;
 199     rbuf->buf = NULL;
 200     rbuf->constant_buffer = NULL;
 201
 202     /* Alloc constant buffers in RAM. */
 203     if (templ->bind & PIPE_BIND_CONSTANT_BUFFER) {
 204         rbuf->constant_buffer = MALLOC(templ->width0);
 205         return &rbuf->b.b.b;
 206     }
 207
 208     rbuf->buf =
 209         r300screen->rws->buffer_create(r300screen->rws,
 210                                        rbuf->b.b.b.width0, alignment,
 211                                        rbuf->b.b.b.bind, rbuf->domain);
 212     if (!rbuf->buf) {
 213         util_slab_free(&r300screen->pool_buffers, rbuf);
 214         return NULL;
 215     }
 216
 217     rbuf->cs_buf =
 218         r300screen->rws->buffer_get_cs_handle(rbuf->buf);
 219
 220     return &rbuf->b.b.b;
 221 }
 222
 223 struct pipe_resource *r300_user_buffer_create(struct pipe_screen *screen,
 224                                               void *ptr, unsigned size,
 225                                               unsigned bind)
 226 {
 227     struct r300_screen *r300screen = r300_screen(screen);
 228     struct r300_resource *rbuf;
 229
 230     rbuf = util_slab_alloc(&r300screen->pool_buffers);
 231
 232     pipe_reference_init(&rbuf->b.b.b.reference, 1);
 233     rbuf->b.b.b.screen = screen;
 234     rbuf->b.b.b.target = PIPE_BUFFER;
 235     rbuf->b.b.b.format = PIPE_FORMAT_R8_UNORM;
 236     rbuf->b.b.b.usage = PIPE_USAGE_IMMUTABLE;
 237     rbuf->b.b.b.bind = bind;
 238     rbuf->b.b.b.width0 = ~0;
 239     rbuf->b.b.b.height0 = 1;
 240     rbuf->b.b.b.depth0 = 1;
 241     rbuf->b.b.b.array_size = 1;
 242     rbuf->b.b.b.flags = 0;
 243     rbuf->b.b.vtbl = &r300_buffer_vtbl;
 244     rbuf->b.user_ptr = ptr;
 245     rbuf->domain = RADEON_DOMAIN_GTT;
 246     rbuf->buf = NULL;
 247     rbuf->constant_buffer = NULL;
 248     return &rbuf->b.b.b;
 249 }