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 #include <stdio.h>
  26
  27 #include "util/u_inlines.h"
  28 #include "util/u_format.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 #include "r300_winsys.h"
  36
  37 boolean r300_buffer_is_referenced(struct r300_context *r300,
  38                                   struct pipe_buffer *buf)
  39 {
  40     struct r300_buffer *rbuf = r300_buffer(buf);
  41     if (r300_buffer_is_user_buffer(buf))
  42         return FALSE;
  43
  44     return r300->rws->is_buffer_referenced(r300->rws, rbuf->buf);
  45
  46 }
  47 int r300_upload_index_buffer(struct r300_context *r300,
  48                              struct pipe_buffer **index_buffer,
  49                              unsigned index_size,
  50                              unsigned start,
  51                              unsigned count)
  52 {
  53    struct pipe_buffer *upload_buffer = NULL;
  54    unsigned index_offset = start * index_size;
  55    int ret = 0;
  56
  57     if (r300_buffer_is_user_buffer(*index_buffer)) {
  58         ret = u_upload_buffer(r300->upload_ib,
  59                               index_offset,
  60                               count * index_size,
  61                               *index_buffer,
  62                               &index_offset,
  63                               &upload_buffer);
  64         if (ret) {
  65             goto done;
  66         }
  67         *index_buffer = upload_buffer;
  68     }
  69  done:
  70     //    if (upload_buffer)
  71     //  pipe_buffer_reference(&upload_buffer, NULL);
  72     return ret;
  73 }
  74
  75 int r300_upload_user_buffers(struct r300_context *r300)
  76 {
  77     enum pipe_error ret = PIPE_OK;
  78     int i, nr;
  79
  80     nr = r300->vertex_buffer_count;
  81
  82     for (i = 0; i < nr; i++) {
  83
  84         if (r300_buffer_is_user_buffer(r300->vertex_buffer[i].buffer)) {
  85             struct pipe_buffer *upload_buffer = NULL;
  86             unsigned offset = 0; /*r300->vertex_buffer[i].buffer_offset * 4;*/
  87             unsigned size = r300->vertex_buffer[i].buffer->size;
  88             unsigned upload_offset;
  89             ret = u_upload_buffer(r300->upload_vb,
  90                                   offset, size,
  91                                   r300->vertex_buffer[i].buffer,
  92                                   &upload_offset, &upload_buffer);
  93             if (ret)
  94                 return ret;
  95
  96             pipe_buffer_reference(&r300->vertex_buffer[i].buffer, NULL);
  97             r300->vertex_buffer[i].buffer = upload_buffer;
  98             r300->vertex_buffer[i].buffer_offset = upload_offset;
  99         }
 100     }
 101     return ret;
 102 }
 103
 104 static struct r300_winsys_buffer *
 105 r300_winsys_buffer_create(struct r300_screen *r300screen,
 106                           unsigned alignment,
 107                           unsigned usage,
 108                           unsigned size)
 109 {
 110     struct r300_winsys_screen *rws = r300screen->rws;
 111     struct r300_winsys_buffer *buf;
 112
 113     buf = rws->buffer_create(rws, alignment, usage, size);
 114     return buf;
 115 }
 116
 117 static void r300_winsys_buffer_destroy(struct r300_screen *r300screen,
 118                                        struct r300_buffer *rbuf)
 119 {
 120     struct r300_winsys_screen *rws = r300screen->rws;
 121
 122     if (rbuf->buf) {
 123         rws->buffer_reference(rws, &rbuf->buf, NULL);
 124         rbuf->buf = NULL;
 125     }
 126 }
 127
 128 static struct pipe_buffer *r300_buffer_create(struct pipe_screen *screen,
 129                                               unsigned alignment,
 130                                               unsigned usage,
 131                                               unsigned size)
 132 {
 133     struct r300_screen *r300screen = r300_screen(screen);
 134     struct r300_buffer *rbuf;
 135
 136     rbuf = CALLOC_STRUCT(r300_buffer);
 137     if (!rbuf)
 138         goto error1;
 139
 140     rbuf->magic = R300_BUFFER_MAGIC;
 141
 142     pipe_reference_init(&rbuf->base.reference, 1);
 143     rbuf->base.screen = screen;
 144     rbuf->base.alignment = alignment;
 145     rbuf->base.usage = usage;
 146     rbuf->base.size = size;
 147
 148     rbuf->buf = r300_winsys_buffer_create(r300screen,
 149                                           alignment,
 150                                           usage,
 151                                           size);
 152
 153     if (!rbuf->buf)
 154         goto error2;
 155
 156     return &rbuf->base;
 157 error2:
 158     FREE(rbuf);
 159 error1:
 160     return NULL;
 161 }
 162
 163
 164 static struct pipe_buffer *r300_user_buffer_create(struct pipe_screen *screen,
 165                                                    void *ptr,
 166                                                    unsigned bytes)
 167 {
 168     struct r300_buffer *rbuf;
 169
 170     rbuf = CALLOC_STRUCT(r300_buffer);
 171     if (!rbuf)
 172         goto no_rbuf;
 173
 174     rbuf->magic = R300_BUFFER_MAGIC;
 175
 176     pipe_reference_init(&rbuf->base.reference, 1);
 177     rbuf->base.screen = screen;
 178     rbuf->base.alignment = 1;
 179     rbuf->base.usage = 0;
 180     rbuf->base.size = bytes;
 181
 182     rbuf->user_buffer = ptr;
 183     return &rbuf->base;
 184
 185 no_rbuf:
 186     return NULL;
 187 }
 188
 189 static void r300_buffer_destroy(struct pipe_buffer *buf)
 190 {
 191     struct r300_screen *r300screen = r300_screen(buf->screen);
 192     struct r300_buffer *rbuf = r300_buffer(buf);
 193
 194     r300_winsys_buffer_destroy(r300screen, rbuf);
 195     FREE(rbuf);
 196 }
 197
 198 static void *
 199 r300_buffer_map_range(struct pipe_screen *screen,
 200                       struct pipe_buffer *buf,
 201                       unsigned offset, unsigned length,
 202                       unsigned usage )
 203 {
 204     struct r300_screen *r300screen = r300_screen(screen);
 205     struct r300_winsys_screen *rws = r300screen->rws;
 206     struct r300_buffer *rbuf = r300_buffer(buf);
 207     void *map;
 208     int flush = 0;
 209     int i;
 210
 211     if (rbuf->user_buffer)
 212         return rbuf->user_buffer;
 213
 214     if (rbuf->base.usage & PIPE_BUFFER_USAGE_CONSTANT)
 215         goto just_map;
 216
 217     /* check if the mapping is to a range we already flushed */
 218     if (usage & PIPE_BUFFER_USAGE_DISCARD) {
 219         for (i = 0; i < rbuf->num_ranges; i++) {
 220
 221             if ((offset >= rbuf->ranges[i].start) &&
 222                 (offset < rbuf->ranges[i].end))
 223                 flush = 1;
 224
 225             if (flush) {
 226                 /* unreference this hw buffer and allocate a new one */
 227                 rws->buffer_reference(rws, &rbuf->buf, NULL);
 228
 229                 rbuf->num_ranges = 0;
 230                 rbuf->map = NULL;
 231                 rbuf->buf = r300_winsys_buffer_create(r300screen,
 232                                                       rbuf->base.alignment,
 233                                                       rbuf->base.usage,
 234                                                       rbuf->base.size);
 235                 break;
 236             }
 237         }
 238     }
 239 just_map:
 240     map = rws->buffer_map(rws, rbuf->buf, usage);
 241
 242     return map;
 243 }
 244
 245 static void
 246 r300_buffer_flush_mapped_range( struct pipe_screen *screen,
 247                                 struct pipe_buffer *buf,
 248                                 unsigned offset,
 249                                 unsigned length )
 250 {
 251     struct r300_buffer *rbuf = r300_buffer(buf);
 252     int i;
 253
 254     if (rbuf->user_buffer)
 255         return;
 256
 257     if (rbuf->base.usage & PIPE_BUFFER_USAGE_CONSTANT)
 258         return;
 259
 260     /* mark the range as used */
 261     for(i = 0; i < rbuf->num_ranges; ++i) {
 262         if(offset <= rbuf->ranges[i].end && rbuf->ranges[i].start <= (offset+length)) {
 263             rbuf->ranges[i].start = MIN2(rbuf->ranges[i].start, offset);
 264             rbuf->ranges[i].end   = MAX2(rbuf->ranges[i].end, (offset+length));
 265             return;
 266         }
 267     }
 268
 269     rbuf->ranges[rbuf->num_ranges].start = offset;
 270     rbuf->ranges[rbuf->num_ranges].end = offset+length;
 271     rbuf->num_ranges++;
 272 }
 273
 274 static void *
 275 r300_buffer_map(struct pipe_screen *screen,
 276                 struct pipe_buffer *buf,
 277                 unsigned usage)
 278 {
 279     struct r300_screen *r300screen = r300_screen(screen);
 280     struct r300_winsys_screen *rws = r300screen->rws;
 281     struct r300_buffer *rbuf = r300_buffer(buf);
 282     void *map;
 283
 284    if (rbuf->user_buffer)
 285       return rbuf->user_buffer;
 286
 287     map = rws->buffer_map(rws, rbuf->buf, usage);
 288
 289     return map;
 290 }
 291
 292 static void
 293 r300_buffer_unmap(struct pipe_screen *screen,
 294                   struct pipe_buffer *buf)
 295 {
 296     struct r300_screen *r300screen = r300_screen(screen);
 297     struct r300_winsys_screen *rws = r300screen->rws;
 298     struct r300_buffer *rbuf = r300_buffer(buf);
 299
 300     if (rbuf->buf) {
 301         rws->buffer_unmap(rws, rbuf->buf);
 302     }
 303 }
 304
 305 void r300_screen_init_buffer_functions(struct r300_screen *r300screen)
 306 {
 307     r300screen->screen.buffer_create = r300_buffer_create;
 308     r300screen->screen.user_buffer_create = r300_user_buffer_create;
 309     r300screen->screen.buffer_map = r300_buffer_map;
 310     r300screen->screen.buffer_map_range = r300_buffer_map_range;
 311     r300screen->screen.buffer_flush_mapped_range = r300_buffer_flush_mapped_range;
 312     r300screen->screen.buffer_unmap = r300_buffer_unmap;
 313     r300screen->screen.buffer_destroy = r300_buffer_destroy;
 314 }