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 "state_tracker/drm_driver.h"
  33 #include <xf86drm.h>
  34 #include "radeon_drm.h"
  35 #include "r600.h"
  36 #include "r600_pipe.h"
  37
  38 extern struct u_resource_vtbl r600_buffer_vtbl;
  39
  40
  41 struct pipe_resource *r600_buffer_create(struct pipe_screen *screen,
  42                                          const struct pipe_resource *templ)
  43 {
  44         struct r600_resource_buffer *rbuffer;
  45         struct r600_bo *bo;
  46         /* XXX We probably want a different alignment for buffers and textures. */
  47         unsigned alignment = 4096;
  48
  49         rbuffer = CALLOC_STRUCT(r600_resource_buffer);
  50         if (rbuffer == NULL)
  51                 return NULL;
  52
  53         rbuffer->magic = R600_BUFFER_MAGIC;
  54         rbuffer->user_buffer = NULL;
  55         rbuffer->r.base.b = *templ;
  56         pipe_reference_init(&rbuffer->r.base.b.reference, 1);
  57         rbuffer->r.base.b.screen = screen;
  58         rbuffer->r.base.vtbl = &r600_buffer_vtbl;
  59         rbuffer->r.size = rbuffer->r.base.b.width0;
  60         rbuffer->r.bo_size = rbuffer->r.size;
  61         rbuffer->uploaded = FALSE;
  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->r.bo = NULL;
  95         rbuffer->r.bo_size = 0;
  96         rbuffer->user_buffer = ptr;
  97         rbuffer->uploaded = FALSE;
  98         return &rbuffer->r.base.b;
  99 }
 100
 101 static void r600_buffer_destroy(struct pipe_screen *screen,
 102                                 struct pipe_resource *buf)
 103 {
 104         struct r600_resource_buffer *rbuffer = r600_buffer(buf);
 105
 106         if (rbuffer->r.bo) {
 107                 r600_bo_reference((struct radeon*)screen->winsys, &rbuffer->r.bo, NULL);
 108         }
 109         rbuffer->r.bo = NULL;
 110         FREE(rbuffer);
 111 }
 112
 113 static void *r600_buffer_transfer_map(struct pipe_context *pipe,
 114                                       struct pipe_transfer *transfer)
 115 {
 116         struct r600_resource_buffer *rbuffer = r600_buffer(transfer->resource);
 117         int write = 0;
 118         uint8_t *data;
 119
 120         if (rbuffer->user_buffer)
 121                 return (uint8_t*)rbuffer->user_buffer + transfer->box.x;
 122
 123         if (transfer->usage & PIPE_TRANSFER_DONTBLOCK) {
 124                 /* FIXME */
 125         }
 126         if (transfer->usage & PIPE_TRANSFER_WRITE) {
 127                 write = 1;
 128         }
 129         data = r600_bo_map((struct radeon*)pipe->winsys, rbuffer->r.bo, transfer->usage, pipe);
 130         if (!data)
 131                 return NULL;
 132
 133         return (uint8_t*)data + transfer->box.x;
 134 }
 135
 136 static void r600_buffer_transfer_unmap(struct pipe_context *pipe,
 137                                         struct pipe_transfer *transfer)
 138 {
 139         struct r600_resource_buffer *rbuffer = r600_buffer(transfer->resource);
 140
 141         if (rbuffer->user_buffer)
 142                 return;
 143
 144         if (rbuffer->r.bo)
 145                 r600_bo_unmap((struct radeon*)pipe->winsys, rbuffer->r.bo);
 146 }
 147
 148 static void r600_buffer_transfer_flush_region(struct pipe_context *pipe,
 149                                                 struct pipe_transfer *transfer,
 150                                                 const struct pipe_box *box)
 151 {
 152 }
 153
 154 unsigned r600_buffer_is_referenced_by_cs(struct pipe_context *context,
 155                                          struct pipe_resource *buf,
 156                                          unsigned level, int layer)
 157 {
 158         /* FIXME */
 159         return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 160 }
 161
 162 struct pipe_resource *r600_buffer_from_handle(struct pipe_screen *screen,
 163                                               struct winsys_handle *whandle)
 164 {
 165         struct radeon *rw = (struct radeon*)screen->winsys;
 166         struct r600_resource *rbuffer;
 167         struct r600_bo *bo = NULL;
 168
 169         bo = r600_bo_handle(rw, whandle->handle, NULL);
 170         if (bo == NULL) {
 171                 return NULL;
 172         }
 173
 174         rbuffer = CALLOC_STRUCT(r600_resource);
 175         if (rbuffer == NULL) {
 176                 r600_bo_reference(rw, &bo, NULL);
 177                 return NULL;
 178         }
 179
 180         pipe_reference_init(&rbuffer->base.b.reference, 1);
 181         rbuffer->base.b.target = PIPE_BUFFER;
 182         rbuffer->base.b.screen = screen;
 183         rbuffer->base.vtbl = &r600_buffer_vtbl;
 184         rbuffer->bo = bo;
 185         return &rbuffer->base.b;
 186 }
 187
 188 struct u_resource_vtbl r600_buffer_vtbl =
 189 {
 190         u_default_resource_get_handle,          /* get_handle */
 191         r600_buffer_destroy,                    /* resource_destroy */
 192         r600_buffer_is_referenced_by_cs,        /* is_buffer_referenced */
 193         u_default_get_transfer,                 /* get_transfer */
 194         u_default_transfer_destroy,             /* transfer_destroy */
 195         r600_buffer_transfer_map,               /* transfer_map */
 196         r600_buffer_transfer_flush_region,      /* transfer_flush_region */
 197         r600_buffer_transfer_unmap,             /* transfer_unmap */
 198         u_default_transfer_inline_write         /* transfer_inline_write */
 199 };
 200
 201 int r600_upload_index_buffer(struct r600_pipe_context *rctx, struct r600_drawl *draw)
 202 {
 203         if (r600_buffer_is_user_buffer(draw->index_buffer)) {
 204                 struct r600_resource_buffer *rbuffer = r600_buffer(draw->index_buffer);
 205                 unsigned upload_offset;
 206                 int ret = 0;
 207
 208                 ret = r600_upload_buffer(rctx->rupload_vb,
 209                                         draw->index_buffer_offset,
 210                                         draw->count * draw->index_size,
 211                                         rbuffer,
 212                                         &upload_offset,
 213                                         &rbuffer->r.bo_size,
 214                                         &rbuffer->r.bo);
 215                 if (ret)
 216                         return ret;
 217                 rbuffer->uploaded = TRUE;
 218                 draw->index_buffer_offset = upload_offset;
 219         }
 220
 221         return 0;
 222 }
 223
 224 int r600_upload_user_buffers(struct r600_pipe_context *rctx)
 225 {
 226         enum pipe_error ret = PIPE_OK;
 227         int i, nr;
 228
 229         nr = rctx->vertex_elements->count;
 230         nr = rctx->nvertex_buffer;
 231
 232         for (i = 0; i < nr; i++) {
 233                 struct pipe_vertex_buffer *vb = &rctx->vertex_buffer[i];
 234
 235                 if (r600_buffer_is_user_buffer(vb->buffer)) {
 236                         struct r600_resource_buffer *rbuffer = r600_buffer(vb->buffer);
 237                         unsigned upload_offset;
 238
 239                         ret = r600_upload_buffer(rctx->rupload_vb,
 240                                                 0, vb->buffer->width0,
 241                                                 rbuffer,
 242                                                 &upload_offset,
 243                                                 &rbuffer->r.bo_size,
 244                                                 &rbuffer->r.bo);
 245                         if (ret)
 246                                 return ret;
 247                         rbuffer->uploaded = TRUE;
 248                         vb->buffer_offset = upload_offset;
 249                 }
 250         }
 251         return ret;
 252 }