aboutsummaryrefslogtreecommitdiff
path: root/mesalib/src/gallium/auxiliary/util/u_transfer.c
blob: 8b4c3659253681917c5a0fb6d9685993d514158e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
#include "pipe/p_context.h"
#include "util/u_rect.h"
#include "util/u_inlines.h"
#include "util/u_transfer.h"
#include "util/u_memory.h"

/* One-shot transfer operation with data supplied in a user
 * pointer.  XXX: strides??
 */
void u_default_transfer_inline_write( struct pipe_context *pipe,
                                      struct pipe_resource *resource,
                                      unsigned level,
                                      unsigned usage,
                                      const struct pipe_box *box,
                                      const void *data,
                                      unsigned stride,
                                      unsigned layer_stride)
{
   struct pipe_transfer *transfer = NULL;
   uint8_t *map = NULL;

   assert(!(usage & PIPE_TRANSFER_READ));

   /* the write flag is implicit by the nature of transfer_inline_write */
   usage |= PIPE_TRANSFER_WRITE;

   /* transfer_inline_write implicitly discards the rewritten buffer range */
   if (box->x == 0 && box->width == resource->width0) {
      usage |= PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE;
   } else {
      usage |= PIPE_TRANSFER_DISCARD_RANGE;
   }

   map = pipe->transfer_map(pipe,
                            resource,
                            level,
                            usage,
                            box, &transfer);
   if (map == NULL)
      return;

   if (resource->target == PIPE_BUFFER) {
      assert(box->height == 1);
      assert(box->depth == 1);

      memcpy(map, data, box->width);
   }
   else {
      const uint8_t *src_data = data;
      unsigned i;

      for (i = 0; i < box->depth; i++) {
         util_copy_rect(map,
                        resource->format,
                        transfer->stride, /* bytes */
                        0, 0,
                        box->width,
                        box->height,
                        src_data,
                        stride,       /* bytes */
                        0, 0);
         map += transfer->layer_stride;
         src_data += layer_stride;
      }
   }

   pipe_transfer_unmap(pipe, transfer);
}


boolean u_default_resource_get_handle(struct pipe_screen *screen,
                                      struct pipe_resource *resource,
                                      struct winsys_handle *handle)
{
   return FALSE;
}



void u_default_transfer_flush_region( struct pipe_context *pipe,
                                      struct pipe_transfer *transfer,
                                      const struct pipe_box *box)
{
   /* This is a no-op implementation, nothing to do.
    */
}

void u_default_transfer_unmap( struct pipe_context *pipe,
                               struct pipe_transfer *transfer )
{
}