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 <pipe/p_screen.h>
  28 #include <util/u_format.h>
  29 #include <util/u_math.h>
  30 #include <util/u_inlines.h>
  31 #include <util/u_memory.h>
  32 #include <util/u_upload_mgr.h>
  33 #include "state_tracker/drm_driver.h"
  34 #include <xf86drm.h>
  35 #include "radeon_drm.h"
  36 #include "r600.h"
  37 #include "r600_pipe.h"
  38
  39 extern struct u_resource_vtbl r600_buffer_vtbl;
  40
  41
  42 struct pipe_resource *r600_buffer_create(struct pipe_screen *screen,
  43                                          const struct pipe_resource *templ)
  44 {
  45         struct r600_resource_buffer *rbuffer;
  46         struct r600_bo *bo;
  47         /* XXX We probably want a different alignment for buffers and textures. */
  48         unsigned alignment = 4096;
  49
  50         rbuffer = CALLOC_STRUCT(r600_resource_buffer);
  51         if (rbuffer == NULL)
  52                 return NULL;
  53
  54         rbuffer->magic = R600_BUFFER_MAGIC;
  55         rbuffer->user_buffer = NULL;
  56         rbuffer->num_ranges = 0;
  57         rbuffer->r.base.b = *templ;
  58         pipe_reference_init(&rbuffer->r.base.b.reference, 1);
  59         rbuffer->r.base.b.screen = screen;
  60         rbuffer->r.base.vtbl = &r600_buffer_vtbl;
  61         rbuffer->r.size = rbuffer->r.base.b.width0;
  62         bo = r600_bo((struct radeon*)screen->winsys, rbuffer->r.base.b.width0, alignment, rbuffer->r.base.b.bind, rbuffer->r.base.b.usage);
  63         if (bo == NULL) {
  64                 FREE(rbuffer);
  65                 return NULL;
  66         }
  67         rbuffer->r.bo = bo;
  68         return &rbuffer->r.base.b;
  69 }
  70
  71 struct pipe_resource *r600_user_buffer_create(struct pipe_screen *screen,
  72                                               void *ptr, unsigned bytes,
  73                                               unsigned bind)
  74 {
  75         struct r600_resource_buffer *rbuffer;
  76
  77         rbuffer = CALLOC_STRUCT(r600_resource_buffer);
  78         if (rbuffer == NULL)
  79                 return NULL;
  80
  81         rbuffer->magic = R600_BUFFER_MAGIC;
  82         pipe_reference_init(&rbuffer->r.base.b.reference, 1);
  83         rbuffer->r.base.vtbl = &r600_buffer_vtbl;
  84         rbuffer->r.base.b.screen = screen;
  85         rbuffer->r.base.b.target = PIPE_BUFFER;
  86         rbuffer->r.base.b.format = PIPE_FORMAT_R8_UNORM;
  87         rbuffer->r.base.b.usage = PIPE_USAGE_IMMUTABLE;
  88         rbuffer->r.base.b.bind = bind;
  89         rbuffer->r.base.b.width0 = bytes;
  90         rbuffer->r.base.b.height0 = 1;
  91         rbuffer->r.base.b.depth0 = 1;
  92         rbuffer->r.base.b.array_size = 1;
  93         rbuffer->r.base.b.flags = 0;
  94         rbuffer->num_ranges = 0;
  95         rbuffer->r.bo = NULL;
  96         rbuffer->user_buffer = ptr;
  97         return &rbuffer->r.base.b;
  98 }
  99
 100 static void r600_buffer_destroy(struct pipe_screen *screen,
 101                                 struct pipe_resource *buf)
 102 {
 103         struct r600_resource_buffer *rbuffer = r600_buffer(buf);
 104
 105         if (rbuffer->r.bo) {
 106                 r600_bo_reference((struct radeon*)screen->winsys, &rbuffer->r.bo, NULL);
 107         }
 108         FREE(rbuffer);
 109 }
 110
 111 static void *r600_buffer_transfer_map(struct pipe_context *pipe,
 112                                       struct pipe_transfer *transfer)
 113 {
 114         struct r600_resource_buffer *rbuffer = r600_buffer(transfer->resource);
 115         int write = 0;
 116         uint8_t *data;
 117         int i;
 118         boolean flush = FALSE;
 119
 120         if (rbuffer->user_buffer)
 121                 return (uint8_t*)rbuffer->user_buffer + transfer->box.x;
 122
 123         if (transfer->usage & PIPE_TRANSFER_DISCARD) {
 124                 for (i = 0; i < rbuffer->num_ranges; i++) {
 125                         if ((transfer->box.x >= rbuffer->ranges[i].start) &&
 126                             (transfer->box.x < rbuffer->ranges[i].end))
 127                                 flush = TRUE;
 128
 129                         if (flush) {
 130                                 r600_bo_reference((struct radeon*)pipe->winsys, &rbuffer->r.bo, NULL);
 131                                 rbuffer->num_ranges = 0;
 132                                 rbuffer->r.bo = r600_bo((struct radeon*)pipe->winsys,
 133                                                         rbuffer->r.base.b.width0, 0,
 134                                                         rbuffer->r.base.b.bind,
 135                                                         rbuffer->r.base.b.usage);
 136                                 break;
 137                         }
 138                 }
 139         }
 140         if (transfer->usage & PIPE_TRANSFER_DONTBLOCK) {
 141                 /* FIXME */
 142         }
 143         if (transfer->usage & PIPE_TRANSFER_WRITE) {
 144                 write = 1;
 145         }
 146         data = r600_bo_map((struct radeon*)pipe->winsys, rbuffer->r.bo, transfer->usage, pipe);
 147         if (!data)
 148                 return NULL;
 149
 150         return (uint8_t*)data + transfer->box.x;
 151 }
 152
 153 static void r600_buffer_transfer_unmap(struct pipe_context *pipe,
 154                                         struct pipe_transfer *transfer)
 155 {
 156         struct r600_resource_buffer *rbuffer = r600_buffer(transfer->resource);
 157
 158         if (rbuffer->r.bo)
 159                 r600_bo_unmap((struct radeon*)pipe->winsys, rbuffer->r.bo);
 160 }
 161
 162 static void r600_buffer_transfer_flush_region(struct pipe_context *pipe,
 163                                               struct pipe_transfer *transfer,
 164                                               const struct pipe_box *box)
 165 {
 166         struct r600_resource_buffer *rbuffer = r600_buffer(transfer->resource);
 167         unsigned i;
 168         unsigned offset = transfer->box.x + box->x;
 169         unsigned length = box->width;
 170
 171         assert(box->x + box->width <= transfer->box.width);
 172
 173         if (rbuffer->user_buffer)
 174                 return;
 175
 176         /* mark the range as used */
 177         for(i = 0; i < rbuffer->num_ranges; ++i) {
 178                 if(offset <= rbuffer->ranges[i].end && rbuffer->ranges[i].start <= (offset+box->width)) {
 179                         rbuffer->ranges[i].start = MIN2(rbuffer->ranges[i].start, offset);
 180                         rbuffer->ranges[i].end   = MAX2(rbuffer->ranges[i].end, (offset+length));
 181                         return;
 182                 }
 183         }
 184
 185         rbuffer->ranges[rbuffer->num_ranges].start = offset;
 186         rbuffer->ranges[rbuffer->num_ranges].end = offset+length;
 187         rbuffer->num_ranges++;
 188 }
 189
 190 unsigned r600_buffer_is_referenced_by_cs(struct pipe_context *context,
 191                                          struct pipe_resource *buf,
 192                                          unsigned level, int layer)
 193 {
 194         /* FIXME */
 195         return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 196 }
 197
 198 struct pipe_resource *r600_buffer_from_handle(struct pipe_screen *screen,
 199                                               struct winsys_handle *whandle)
 200 {
 201         struct radeon *rw = (struct radeon*)screen->winsys;
 202         struct r600_resource *rbuffer;
 203         struct r600_bo *bo = NULL;
 204
 205         bo = r600_bo_handle(rw, whandle->handle, NULL);
 206         if (bo == NULL) {
 207                 return NULL;
 208         }
 209
 210         rbuffer = CALLOC_STRUCT(r600_resource);
 211         if (rbuffer == NULL) {
 212                 r600_bo_reference(rw, &bo, NULL);
 213                 return NULL;
 214         }
 215
 216         pipe_reference_init(&rbuffer->base.b.reference, 1);
 217         rbuffer->base.b.target = PIPE_BUFFER;
 218         rbuffer->base.b.screen = screen;
 219         rbuffer->base.vtbl = &r600_buffer_vtbl;
 220         rbuffer->bo = bo;
 221         return &rbuffer->base.b;
 222 }
 223
 224 struct u_resource_vtbl r600_buffer_vtbl =
 225 {
 226         u_default_resource_get_handle,          /* get_handle */
 227         r600_buffer_destroy,                    /* resource_destroy */
 228         r600_buffer_is_referenced_by_cs,        /* is_buffer_referenced */
 229         u_default_get_transfer,                 /* get_transfer */
 230         u_default_transfer_destroy,             /* transfer_destroy */
 231         r600_buffer_transfer_map,               /* transfer_map */
 232         r600_buffer_transfer_flush_region,      /* transfer_flush_region */
 233         r600_buffer_transfer_unmap,             /* transfer_unmap */
 234         u_default_transfer_inline_write         /* transfer_inline_write */
 235 };
 236
 237 int r600_upload_index_buffer(struct r600_pipe_context *rctx, struct r600_drawl *draw)
 238 {
 239         struct pipe_resource *upload_buffer = NULL;
 240         unsigned index_offset = draw->index_buffer_offset;
 241         int ret = 0;
 242
 243         if (r600_buffer_is_user_buffer(draw->index_buffer)) {
 244                 ret = u_upload_buffer(rctx->upload_ib,
 245                                       index_offset,
 246                                       draw->count * draw->index_size,
 247                                       draw->index_buffer,
 248                                       &index_offset,
 249                                       &upload_buffer);
 250                 if (ret) {
 251                         goto done;
 252                 }
 253                 draw->index_buffer_offset = index_offset;
 254
 255                 /* Transfer ownership. */
 256                 pipe_resource_reference(&draw->index_buffer, upload_buffer);
 257                 pipe_resource_reference(&upload_buffer, NULL);
 258         }
 259
 260 done:
 261         return ret;
 262 }
 263
 264 int r600_upload_user_buffers(struct r600_pipe_context *rctx)
 265 {
 266         enum pipe_error ret = PIPE_OK;
 267         int i, nr;
 268
 269         nr = rctx->vertex_elements->count;
 270
 271         for (i = 0; i < nr; i++) {
 272                 struct pipe_vertex_buffer *vb =
 273                         &rctx->vertex_buffer[rctx->vertex_elements->elements[i].vertex_buffer_index];
 274
 275                 if (r600_buffer_is_user_buffer(vb->buffer)) {
 276                         struct pipe_resource *upload_buffer = NULL;
 277                         unsigned offset = 0; /*vb->buffer_offset * 4;*/
 278                         unsigned size = vb->buffer->width0;
 279                         unsigned upload_offset;
 280                         ret = u_upload_buffer(rctx->upload_vb,
 281                                               offset, size,
 282                                               vb->buffer,
 283                                               &upload_offset, &upload_buffer);
 284                         if (ret)
 285                                 return ret;
 286
 287                         pipe_resource_reference(&vb->buffer, NULL);
 288                         vb->buffer = upload_buffer;
 289                         vb->buffer_offset = upload_offset;
 290                 }
 291         }
 292         return ret;
 293 }