lib/ultralib/src/io/viswapbuf.c


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

#include "PR/os_internal.h"
#include "PR/ultraerror.h"
#include "assert.h"
#include "PRinternal/viint.h"


// TODO: this comes from a header
#ident "$Revision: 1.17 $"

void osViSwapBuffer(void* frameBufPtr) {
    u32 saveMask;

#ifdef _DEBUG
    if (!__osViDevMgr.active) {
        __osError(ERR_OSVISWAPBUFFER_VIMGR, 0);
        return;
    }

    assert(frameBufPtr != NULL);

    if ((u32)frameBufPtr & 0x3f) {
        __osError(ERR_OSVISWAPBUFFER_ADDR, 1, frameBufPtr);
        return;
    }
#endif

    saveMask = __osDisableInt();

    __osViNext->framep = frameBufPtr;
    __osViNext->state |= VI_STATE_BUFFER_UPDATED;
    __osRestoreInt(saveMask);
}