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
  26 #include <stdio.h>
  27
  28 #include "util/u_inlines.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 #include "r300_winsys.h"
  35
  36 unsigned r300_buffer_is_referenced(struct pipe_context *context,
  37                                    struct pipe_resource *buf,
  38                                    enum r300_reference_domain domain)
  39 {
  40     struct r300_context *r300 = r300_context(context);
  41     struct r300_buffer *rbuf = r300_buffer(buf);
  42
  43     if (rbuf->b.user_ptr)
  44         return PIPE_UNREFERENCED;
  45
  46     if (r300->rws->cs_is_buffer_referenced(r300->cs, rbuf->cs_buf, domain))
  47         return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
  48
  49     return PIPE_UNREFERENCED;
  50 }
  51
  52 static unsigned r300_buffer_is_referenced_by_cs(struct pipe_context *context,
  53                                                 struct pipe_resource *buf,
  54                                                 unsigned level, int layer)
  55 {
  56     return r300_buffer_is_referenced(context, buf, R300_REF_CS);
  57 }
  58
  59 void r300_upload_index_buffer(struct r300_context *r300,
  60                               struct pipe_resource **index_buffer,
  61                               unsigned index_size, unsigned *start,
  62                               unsigned count)
  63 {
  64     unsigned index_offset;
  65     uint8_t *ptr = r300_buffer(*index_buffer)->b.user_ptr;
  66     boolean flushed;
  67
  68     *index_buffer = NULL;
  69
  70     u_upload_data(r300->upload_ib,
  71                   0, count * index_size,
  72                   ptr + (*start * index_size),
  73                   &index_offset,
  74                   index_buffer, &flushed);
  75
  76     *start = index_offset / index_size;
  77
  78     if (flushed || !r300->upload_ib_validated) {
  79         r300->upload_ib_validated = FALSE;
  80         r300->validate_buffers = TRUE;
  81     }
  82 }
  83
  84 static void r300_buffer_destroy(struct pipe_screen *screen,
  85                                 struct pipe_resource *buf)
  86 {
  87     struct r300_screen *r300screen = r300_screen(screen);
  88     struct r300_buffer *rbuf = r300_buffer(buf);
  89     struct r300_winsys_screen *rws = r300screen->rws;
  90
  91     if (rbuf->constant_buffer)
  92         FREE(rbuf->constant_buffer);
  93
  94     if (rbuf->buf)
  95         rws->buffer_reference(rws, &rbuf->buf, NULL);
  96
  97     util_slab_free(&r300screen->pool_buffers, rbuf);
  98 }
  99
 100 static struct pipe_transfer*
 101 r300_buffer_get_transfer(struct pipe_context *context,
 102                          struct pipe_resource *resource,
 103                          unsigned level,
 104                          unsigned usage,
 105                          const struct pipe_box *box)
 106 {
 107    struct r300_context *r300 = r300_context(context);
 108    struct pipe_transfer *transfer =
 109          util_slab_alloc(&r300->pool_transfers);
 110
 111    transfer->resource = resource;
 112    transfer->level = level;
 113    transfer->usage = usage;
 114    transfer->box = *box;
 115    transfer->stride = 0;
 116    transfer->layer_stride = 0;
 117    transfer->data = NULL;
 118
 119    /* Note strides are zero, this is ok for buffers, but not for
 120     * textures 2d & higher at least.
 121     */
 122    return transfer;
 123 }
 124
 125 static void r300_buffer_transfer_destroy(struct pipe_context *pipe,
 126                                          struct pipe_transfer *transfer)
 127 {
 128    struct r300_context *r300 = r300_context(pipe);
 129    util_slab_free(&r300->pool_transfers, transfer);
 130 }
 131
 132 static void *
 133 r300_buffer_transfer_map( struct pipe_context *pipe,
 134                           struct pipe_transfer *transfer )
 135 {
 136     struct r300_context *r300 = r300_context(pipe);
 137     struct r300_screen *r300screen = r300_screen(pipe->screen);
 138     struct r300_winsys_screen *rws = r300screen->rws;
 139     struct r300_buffer *rbuf = r300_buffer(transfer->resource);
 140     uint8_t *map;
 141
 142     if (rbuf->b.user_ptr)
 143         return (uint8_t *) rbuf->b.user_ptr + transfer->box.x;
 144     if (rbuf->constant_buffer)
 145         return (uint8_t *) rbuf->constant_buffer + transfer->box.x;
 146
 147     map = rws->buffer_map(rws, rbuf->buf, r300->cs, transfer->usage);
 148
 149     if (map == NULL)
 150         return NULL;
 151
 152     return map + transfer->box.x;
 153 }
 154
 155 static void r300_buffer_transfer_flush_region( struct pipe_context *pipe,
 156                                                struct pipe_transfer *transfer,
 157                                                const struct pipe_box *box)
 158 {
 159     /* no-op */
 160 }
 161
 162 static void r300_buffer_transfer_unmap( struct pipe_context *pipe,
 163                             struct pipe_transfer *transfer )
 164 {
 165     struct r300_screen *r300screen = r300_screen(pipe->screen);
 166     struct r300_winsys_screen *rws = r300screen->rws;
 167     struct r300_buffer *rbuf = r300_buffer(transfer->resource);
 168
 169     if (rbuf->buf) {
 170         rws->buffer_unmap(rws, rbuf->buf);
 171     }
 172 }
 173
 174 static void r300_buffer_transfer_inline_write(struct pipe_context *pipe,
 175                                               struct pipe_resource *resource,
 176                                               unsigned level,
 177                                               unsigned usage,
 178                                               const struct pipe_box *box,
 179                                               const void *data,
 180                                               unsigned stride,
 181                                               unsigned layer_stride)
 182 {
 183     struct r300_context *r300 = r300_context(pipe);
 184     struct r300_winsys_screen *rws = r300->screen->rws;
 185     struct r300_buffer *rbuf = r300_buffer(resource);
 186     uint8_t *map = NULL;
 187
 188     if (rbuf->constant_buffer) {
 189         memcpy(rbuf->constant_buffer + box->x, data, box->width);
 190         return;
 191     }
 192     assert(rbuf->b.user_ptr == NULL);
 193
 194     map = rws->buffer_map(rws, rbuf->buf, r300->cs,
 195                           PIPE_TRANSFER_WRITE | PIPE_TRANSFER_DISCARD | usage);
 196
 197     memcpy(map + box->x, data, box->width);
 198
 199     rws->buffer_unmap(rws, rbuf->buf);
 200 }
 201
 202 static const struct u_resource_vtbl r300_buffer_vtbl =
 203 {
 204    u_default_resource_get_handle,      /* get_handle */
 205    r300_buffer_destroy,                /* resource_destroy */
 206    r300_buffer_is_referenced_by_cs,    /* is_buffer_referenced */
 207    r300_buffer_get_transfer,           /* get_transfer */
 208    r300_buffer_transfer_destroy,       /* transfer_destroy */
 209    r300_buffer_transfer_map,           /* transfer_map */
 210    r300_buffer_transfer_flush_region,  /* transfer_flush_region */
 211    r300_buffer_transfer_unmap,         /* transfer_unmap */
 212    r300_buffer_transfer_inline_write   /* transfer_inline_write */
 213 };
 214
 215 struct pipe_resource *r300_buffer_create(struct pipe_screen *screen,
 216                                          const struct pipe_resource *templ)
 217 {
 218     struct r300_screen *r300screen = r300_screen(screen);
 219     struct r300_buffer *rbuf;
 220     unsigned alignment = 16;
 221
 222     rbuf = util_slab_alloc(&r300screen->pool_buffers);
 223
 224     rbuf->magic = R300_BUFFER_MAGIC;
 225
 226     rbuf->b.b.b = *templ;
 227     rbuf->b.b.vtbl = &r300_buffer_vtbl;
 228     pipe_reference_init(&rbuf->b.b.b.reference, 1);
 229     rbuf->b.b.b.screen = screen;
 230     rbuf->b.user_ptr = NULL;
 231     rbuf->domain = R300_DOMAIN_GTT;
 232     rbuf->buf = NULL;
 233     rbuf->constant_buffer = NULL;
 234
 235     /* Alloc constant buffers in RAM. */
 236     if (templ->bind & PIPE_BIND_CONSTANT_BUFFER) {
 237         rbuf->constant_buffer = MALLOC(templ->width0);
 238         return &rbuf->b.b.b;
 239     }
 240
 241     rbuf->buf =
 242         r300screen->rws->buffer_create(r300screen->rws,
 243                                        rbuf->b.b.b.width0, alignment,
 244                                        rbuf->b.b.b.bind, rbuf->b.b.b.usage,
 245                                        rbuf->domain);
 246     rbuf->cs_buf =
 247         r300screen->rws->buffer_get_cs_handle(r300screen->rws, rbuf->buf);
 248
 249     if (!rbuf->buf) {
 250         util_slab_free(&r300screen->pool_buffers, rbuf);
 251         return NULL;
 252     }
 253
 254     return &rbuf->b.b.b;
 255 }
 256
 257 struct pipe_resource *r300_user_buffer_create(struct pipe_screen *screen,
 258                                               void *ptr, unsigned size,
 259                                               unsigned bind)
 260 {
 261     struct r300_screen *r300screen = r300_screen(screen);
 262     struct r300_buffer *rbuf;
 263
 264     rbuf = util_slab_alloc(&r300screen->pool_buffers);
 265
 266     rbuf->magic = R300_BUFFER_MAGIC;
 267
 268     pipe_reference_init(&rbuf->b.b.b.reference, 1);
 269     rbuf->b.b.b.screen = screen;
 270     rbuf->b.b.b.target = PIPE_BUFFER;
 271     rbuf->b.b.b.format = PIPE_FORMAT_R8_UNORM;
 272     rbuf->b.b.b.usage = PIPE_USAGE_IMMUTABLE;
 273     rbuf->b.b.b.bind = bind;
 274     rbuf->b.b.b.width0 = ~0;
 275     rbuf->b.b.b.height0 = 1;
 276     rbuf->b.b.b.depth0 = 1;
 277     rbuf->b.b.b.array_size = 1;
 278     rbuf->b.b.b.flags = 0;
 279     rbuf->b.b.vtbl = &r300_buffer_vtbl;
 280     rbuf->b.user_ptr = ptr;
 281     rbuf->domain = R300_DOMAIN_GTT;
 282     rbuf->buf = NULL;
 283     rbuf->constant_buffer = NULL;
 284     return &rbuf->b.b.b;
 285 }