src/gallium/drivers/r600/r600_buffer.c

   1 /*
   2  * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
   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:
  24  *      Jerome Glisse
  25  *      Corbin Simpson <MostAwesomeDude@gmail.com>
  26  */
  27 #include <byteswap.h>
  28
  29 #include "pipe/p_screen.h"
  30 #include "util/u_format.h"
  31 #include "util/u_math.h"
  32 #include "util/u_inlines.h"
  33 #include "util/u_memory.h"
  34 #include "util/u_upload_mgr.h"
  35
  36 #include "r600.h"
  37 #include "r600_pipe.h"
  38
  39 static void r600_buffer_destroy(struct pipe_screen *screen,
  40                                 struct pipe_resource *buf)
  41 {
  42         struct r600_screen *rscreen = (struct r600_screen*)screen;
  43         struct r600_resource *rbuffer = r600_resource(buf);
  44
  45         pb_reference(&rbuffer->buf, NULL);
  46         util_slab_free(&rscreen->pool_buffers, rbuffer);
  47 }
  48
  49 static struct pipe_transfer *r600_get_transfer(struct pipe_context *ctx,
  50                                                struct pipe_resource *resource,
  51                                                unsigned level,
  52                                                unsigned usage,
  53                                                const struct pipe_box *box)
  54 {
  55         struct r600_context *rctx = (struct r600_context*)ctx;
  56         struct pipe_transfer *transfer = util_slab_alloc(&rctx->pool_transfers);
  57
  58         transfer->resource = resource;
  59         transfer->level = level;
  60         transfer->usage = usage;
  61         transfer->box = *box;
  62         transfer->stride = 0;
  63         transfer->layer_stride = 0;
  64         transfer->data = NULL;
  65
  66         /* Note strides are zero, this is ok for buffers, but not for
  67          * textures 2d & higher at least.
  68          */
  69         return transfer;
  70 }
  71
  72 static void *r600_buffer_transfer_map(struct pipe_context *pipe,
  73                                       struct pipe_transfer *transfer)
  74 {
  75         struct r600_resource *rbuffer = r600_resource(transfer->resource);
  76         struct r600_context *rctx = (struct r600_context*)pipe;
  77         uint8_t *data;
  78
  79         if (rbuffer->b.user_ptr)
  80                 return (uint8_t*)rbuffer->b.user_ptr + transfer->box.x;
  81
  82         data = rctx->ws->buffer_map(rbuffer->buf, rctx->cs, transfer->usage);
  83         if (!data)
  84                 return NULL;
  85
  86         return (uint8_t*)data + transfer->box.x;
  87 }
  88
  89 static void r600_buffer_transfer_unmap(struct pipe_context *pipe,
  90                                         struct pipe_transfer *transfer)
  91 {
  92         struct r600_resource *rbuffer = r600_resource(transfer->resource);
  93         struct r600_context *rctx = (struct r600_context*)pipe;
  94
  95         if (rbuffer->b.user_ptr)
  96                 return;
  97
  98         rctx->ws->buffer_unmap(rbuffer->buf);
  99 }
 100
 101 static void r600_buffer_transfer_flush_region(struct pipe_context *pipe,
 102                                                 struct pipe_transfer *transfer,
 103                                                 const struct pipe_box *box)
 104 {
 105 }
 106
 107 static void r600_transfer_destroy(struct pipe_context *ctx,
 108                                   struct pipe_transfer *transfer)
 109 {
 110         struct r600_context *rctx = (struct r600_context*)ctx;
 111         util_slab_free(&rctx->pool_transfers, transfer);
 112 }
 113
 114 static const struct u_resource_vtbl r600_buffer_vtbl =
 115 {
 116         u_default_resource_get_handle,          /* get_handle */
 117         r600_buffer_destroy,                    /* resource_destroy */
 118         r600_get_transfer,                      /* get_transfer */
 119         r600_transfer_destroy,                  /* transfer_destroy */
 120         r600_buffer_transfer_map,               /* transfer_map */
 121         r600_buffer_transfer_flush_region,      /* transfer_flush_region */
 122         r600_buffer_transfer_unmap,             /* transfer_unmap */
 123         NULL                                    /* transfer_inline_write */
 124 };
 125
 126 bool r600_init_resource(struct r600_screen *rscreen,
 127                         struct r600_resource *res,
 128                         unsigned size, unsigned alignment,
 129                         unsigned bind, unsigned usage)
 130 {
 131         uint32_t initial_domain, domains;
 132
 133         /* Staging resources particpate in transfers and blits only
 134          * and are used for uploads and downloads from regular
 135          * resources.  We generate them internally for some transfers.
 136          */
 137         if (usage == PIPE_USAGE_STAGING) {
 138                 domains = RADEON_DOMAIN_GTT;
 139                 initial_domain = RADEON_DOMAIN_GTT;
 140         } else {
 141                 domains = RADEON_DOMAIN_GTT | RADEON_DOMAIN_VRAM;
 142
 143                 switch(usage) {
 144                 case PIPE_USAGE_DYNAMIC:
 145                 case PIPE_USAGE_STREAM:
 146                 case PIPE_USAGE_STAGING:
 147                         initial_domain = RADEON_DOMAIN_GTT;
 148                         break;
 149                 case PIPE_USAGE_DEFAULT:
 150                 case PIPE_USAGE_STATIC:
 151                 case PIPE_USAGE_IMMUTABLE:
 152                 default:
 153                         initial_domain = RADEON_DOMAIN_VRAM;
 154                         break;
 155                 }
 156         }
 157
 158         res->buf = rscreen->ws->buffer_create(rscreen->ws, size, alignment, bind, initial_domain);
 159         if (!res->buf) {
 160                 return false;
 161         }
 162
 163         res->cs_buf = rscreen->ws->buffer_get_cs_handle(res->buf);
 164         res->domains = domains;
 165         return true;
 166 }
 167
 168 struct pipe_resource *r600_buffer_create(struct pipe_screen *screen,
 169                                          const struct pipe_resource *templ)
 170 {
 171         struct r600_screen *rscreen = (struct r600_screen*)screen;
 172         struct r600_resource *rbuffer;
 173         /* XXX We probably want a different alignment for buffers and textures. */
 174         unsigned alignment = 4096;
 175
 176         rbuffer = util_slab_alloc(&rscreen->pool_buffers);
 177
 178         rbuffer->b.b.b = *templ;
 179         pipe_reference_init(&rbuffer->b.b.b.reference, 1);
 180         rbuffer->b.b.b.screen = screen;
 181         rbuffer->b.b.vtbl = &r600_buffer_vtbl;
 182         rbuffer->b.user_ptr = NULL;
 183
 184         if (!r600_init_resource(rscreen, rbuffer, templ->width0, alignment, templ->bind, templ->usage)) {
 185                 util_slab_free(&rscreen->pool_buffers, rbuffer);
 186                 return NULL;
 187         }
 188         return &rbuffer->b.b.b;
 189 }
 190
 191 struct pipe_resource *r600_user_buffer_create(struct pipe_screen *screen,
 192                                               void *ptr, unsigned bytes,
 193                                               unsigned bind)
 194 {
 195         struct r600_screen *rscreen = (struct r600_screen*)screen;
 196         struct r600_resource *rbuffer;
 197
 198         rbuffer = util_slab_alloc(&rscreen->pool_buffers);
 199
 200         pipe_reference_init(&rbuffer->b.b.b.reference, 1);
 201         rbuffer->b.b.vtbl = &r600_buffer_vtbl;
 202         rbuffer->b.b.b.screen = screen;
 203         rbuffer->b.b.b.target = PIPE_BUFFER;
 204         rbuffer->b.b.b.format = PIPE_FORMAT_R8_UNORM;
 205         rbuffer->b.b.b.usage = PIPE_USAGE_IMMUTABLE;
 206         rbuffer->b.b.b.bind = bind;
 207         rbuffer->b.b.b.width0 = bytes;
 208         rbuffer->b.b.b.height0 = 1;
 209         rbuffer->b.b.b.depth0 = 1;
 210         rbuffer->b.b.b.array_size = 1;
 211         rbuffer->b.b.b.flags = 0;
 212         rbuffer->b.user_ptr = ptr;
 213         rbuffer->buf = NULL;
 214         return &rbuffer->b.b.b;
 215 }
 216
 217 void r600_upload_index_buffer(struct r600_context *rctx,
 218                               struct pipe_index_buffer *ib, unsigned count)
 219 {
 220         struct r600_resource *rbuffer = r600_resource(ib->buffer);
 221
 222         u_upload_data(rctx->vbuf_mgr->uploader, 0, count * ib->index_size,
 223                       rbuffer->b.user_ptr, &ib->offset, &ib->buffer);
 224 }
 225
 226 void r600_upload_const_buffer(struct r600_context *rctx, struct r600_resource **rbuffer,
 227                              uint32_t *const_offset)
 228 {
 229         if ((*rbuffer)->b.user_ptr) {
 230                 uint8_t *ptr = (*rbuffer)->b.user_ptr;
 231                 unsigned size = (*rbuffer)->b.b.b.width0;
 232
 233                 *rbuffer = NULL;
 234
 235                 if (R600_BIG_ENDIAN) {
 236                         uint32_t *tmpPtr;
 237                         unsigned i;
 238
 239                         if (!(tmpPtr = malloc(size))) {
 240                                 R600_ERR("Failed to allocate BE swap buffer.\n");
 241                                 return;
 242                         }
 243
 244                         for (i = 0; i < size / 4; ++i) {
 245                                 tmpPtr[i] = bswap_32(((uint32_t *)ptr)[i]);
 246                         }
 247
 248                         u_upload_data(rctx->vbuf_mgr->uploader, 0, size, tmpPtr, const_offset,
 249                                       (struct pipe_resource**)rbuffer);
 250
 251                         free(tmpPtr);
 252                 } else {
 253                         u_upload_data(rctx->vbuf_mgr->uploader, 0, size, ptr, const_offset,
 254                                       (struct pipe_resource**)rbuffer);
 255                 }
 256         } else {
 257                 *const_offset = 0;
 258         }
 259 }