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 "r600_pipe.h"
  28 #include "util/u_upload_mgr.h"
  29
  30 static void r600_buffer_destroy(struct pipe_screen *screen,
  31                                 struct pipe_resource *buf)
  32 {
  33         struct r600_screen *rscreen = (struct r600_screen*)screen;
  34         struct r600_resource *rbuffer = r600_resource(buf);
  35
  36         pb_reference(&rbuffer->buf, NULL);
  37         util_slab_free(&rscreen->pool_buffers, rbuffer);
  38 }
  39
  40 static struct pipe_transfer *r600_get_transfer(struct pipe_context *ctx,
  41                                                struct pipe_resource *resource,
  42                                                unsigned level,
  43                                                unsigned usage,
  44                                                const struct pipe_box *box)
  45 {
  46         struct r600_context *rctx = (struct r600_context*)ctx;
  47         struct pipe_transfer *transfer = util_slab_alloc(&rctx->pool_transfers);
  48
  49         transfer->resource = resource;
  50         transfer->level = level;
  51         transfer->usage = usage;
  52         transfer->box = *box;
  53         transfer->stride = 0;
  54         transfer->layer_stride = 0;
  55         transfer->data = NULL;
  56
  57         /* Note strides are zero, this is ok for buffers, but not for
  58          * textures 2d & higher at least.
  59          */
  60         return transfer;
  61 }
  62
  63 static void r600_set_constants_dirty_if_bound(struct r600_context *rctx,
  64                                               struct r600_constbuf_state *state,
  65                                               struct r600_resource *rbuffer)
  66 {
  67         bool found = false;
  68         uint32_t mask = state->enabled_mask;
  69
  70         while (mask) {
  71                 unsigned i = u_bit_scan(&mask);
  72                 if (state->cb[i].buffer == &rbuffer->b.b) {
  73                         found = true;
  74                         state->dirty_mask |= 1 << i;
  75                 }
  76         }
  77         if (found) {
  78                 r600_constant_buffers_dirty(rctx, state);
  79         }
  80 }
  81
  82 static void *r600_buffer_transfer_map(struct pipe_context *pipe,
  83                                       struct pipe_transfer *transfer)
  84 {
  85         struct r600_resource *rbuffer = r600_resource(transfer->resource);
  86         struct r600_context *rctx = (struct r600_context*)pipe;
  87         uint8_t *data;
  88
  89         if (transfer->usage & PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE &&
  90             !(transfer->usage & PIPE_TRANSFER_UNSYNCHRONIZED)) {
  91                 assert(transfer->usage & PIPE_TRANSFER_WRITE);
  92
  93                 /* Check if mapping this buffer would cause waiting for the GPU. */
  94                 if (rctx->ws->cs_is_buffer_referenced(rctx->cs, rbuffer->cs_buf, RADEON_USAGE_READWRITE) ||
  95                     rctx->ws->buffer_is_busy(rbuffer->buf, RADEON_USAGE_READWRITE)) {
  96                         unsigned i;
  97
  98                         /* Discard the buffer. */
  99                         pb_reference(&rbuffer->buf, NULL);
 100
 101                         /* Create a new one in the same pipe_resource. */
 102                         /* XXX We probably want a different alignment for buffers and textures. */
 103                         r600_init_resource(rctx->screen, rbuffer, rbuffer->b.b.width0, 4096,
 104                                            rbuffer->b.b.bind, rbuffer->b.b.usage);
 105
 106                         /* We changed the buffer, now we need to bind it where the old one was bound. */
 107                         /* Vertex buffers. */
 108                         for (i = 0; i < rctx->nr_vertex_buffers; i++) {
 109                                 if (rctx->vertex_buffer[i].buffer == &rbuffer->b.b) {
 110                                         r600_inval_vertex_cache(rctx);
 111                                         r600_atom_dirty(rctx, &rctx->vertex_buffer_state);
 112                                 }
 113                         }
 114                         /* Streamout buffers. */
 115                         for (i = 0; i < rctx->num_so_targets; i++) {
 116                                 if (rctx->so_targets[i]->b.buffer == &rbuffer->b.b) {
 117                                         r600_context_streamout_end(rctx);
 118                                         rctx->streamout_start = TRUE;
 119                                         rctx->streamout_append_bitmask = ~0;
 120                                 }
 121                         }
 122                         /* Constant buffers. */
 123                         r600_set_constants_dirty_if_bound(rctx, &rctx->vs_constbuf_state, rbuffer);
 124                         r600_set_constants_dirty_if_bound(rctx, &rctx->ps_constbuf_state, rbuffer);
 125                 }
 126         }
 127
 128         data = rctx->ws->buffer_map(rbuffer->cs_buf, rctx->cs, transfer->usage);
 129         if (!data)
 130                 return NULL;
 131
 132         return (uint8_t*)data + transfer->box.x;
 133 }
 134
 135 static void r600_buffer_transfer_unmap(struct pipe_context *pipe,
 136                                         struct pipe_transfer *transfer)
 137 {
 138         /* no-op */
 139 }
 140
 141 static void r600_transfer_destroy(struct pipe_context *ctx,
 142                                   struct pipe_transfer *transfer)
 143 {
 144         struct r600_context *rctx = (struct r600_context*)ctx;
 145         util_slab_free(&rctx->pool_transfers, transfer);
 146 }
 147
 148 static const struct u_resource_vtbl r600_buffer_vtbl =
 149 {
 150         u_default_resource_get_handle,          /* get_handle */
 151         r600_buffer_destroy,                    /* resource_destroy */
 152         r600_get_transfer,                      /* get_transfer */
 153         r600_transfer_destroy,                  /* transfer_destroy */
 154         r600_buffer_transfer_map,               /* transfer_map */
 155         NULL,                                   /* transfer_flush_region */
 156         r600_buffer_transfer_unmap,             /* transfer_unmap */
 157         NULL                                    /* transfer_inline_write */
 158 };
 159
 160 bool r600_init_resource(struct r600_screen *rscreen,
 161                         struct r600_resource *res,
 162                         unsigned size, unsigned alignment,
 163                         unsigned bind, unsigned usage)
 164 {
 165         uint32_t initial_domain, domains;
 166
 167         /* Staging resources particpate in transfers and blits only
 168          * and are used for uploads and downloads from regular
 169          * resources.  We generate them internally for some transfers.
 170          */
 171         if (usage == PIPE_USAGE_STAGING) {
 172                 domains = RADEON_DOMAIN_GTT;
 173                 initial_domain = RADEON_DOMAIN_GTT;
 174         } else {
 175                 domains = RADEON_DOMAIN_GTT | RADEON_DOMAIN_VRAM;
 176
 177                 switch(usage) {
 178                 case PIPE_USAGE_DYNAMIC:
 179                 case PIPE_USAGE_STREAM:
 180                 case PIPE_USAGE_STAGING:
 181                         initial_domain = RADEON_DOMAIN_GTT;
 182                         break;
 183                 case PIPE_USAGE_DEFAULT:
 184                 case PIPE_USAGE_STATIC:
 185                 case PIPE_USAGE_IMMUTABLE:
 186                 default:
 187                         initial_domain = RADEON_DOMAIN_VRAM;
 188                         break;
 189                 }
 190         }
 191
 192         res->buf = rscreen->ws->buffer_create(rscreen->ws, size, alignment, bind, initial_domain);
 193         if (!res->buf) {
 194                 return false;
 195         }
 196
 197         res->cs_buf = rscreen->ws->buffer_get_cs_handle(res->buf);
 198         res->domains = domains;
 199         return true;
 200 }
 201
 202 struct pipe_resource *r600_buffer_create(struct pipe_screen *screen,
 203                                          const struct pipe_resource *templ)
 204 {
 205         struct r600_screen *rscreen = (struct r600_screen*)screen;
 206         struct r600_resource *rbuffer;
 207         /* XXX We probably want a different alignment for buffers and textures. */
 208         unsigned alignment = 4096;
 209
 210         rbuffer = util_slab_alloc(&rscreen->pool_buffers);
 211
 212         rbuffer->b.b = *templ;
 213         pipe_reference_init(&rbuffer->b.b.reference, 1);
 214         rbuffer->b.b.screen = screen;
 215         rbuffer->b.vtbl = &r600_buffer_vtbl;
 216
 217         if (!r600_init_resource(rscreen, rbuffer, templ->width0, alignment, templ->bind, templ->usage)) {
 218                 util_slab_free(&rscreen->pool_buffers, rbuffer);
 219                 return NULL;
 220         }
 221         return &rbuffer->b.b;
 222 }
 223
 224 struct pipe_resource *r600_user_buffer_create(struct pipe_screen *screen,
 225                                               void *ptr, unsigned bytes,
 226                                               unsigned bind)
 227 {
 228         struct r600_screen *rscreen = (struct r600_screen*)screen;
 229         struct r600_resource *rbuffer;
 230
 231         rbuffer = util_slab_alloc(&rscreen->pool_buffers);
 232
 233         pipe_reference_init(&rbuffer->b.b.reference, 1);
 234         rbuffer->b.vtbl = &r600_buffer_vtbl;
 235         rbuffer->b.b.screen = screen;
 236         rbuffer->b.b.target = PIPE_BUFFER;
 237         rbuffer->b.b.format = PIPE_FORMAT_R8_UNORM;
 238         rbuffer->b.b.usage = PIPE_USAGE_IMMUTABLE;
 239         rbuffer->b.b.bind = bind;
 240         rbuffer->b.b.width0 = bytes;
 241         rbuffer->b.b.height0 = 1;
 242         rbuffer->b.b.depth0 = 1;
 243         rbuffer->b.b.array_size = 1;
 244         rbuffer->b.b.flags = 0;
 245         rbuffer->buf = NULL;
 246         return &rbuffer->b.b;
 247 }