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internal/graphicsdriver/directx: bug fix: go:nosplit was required for syscallN

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Updates #2116
Closes #2117
This commit is contained in:
Hajime Hoshi 2022-06-04 01:10:52 +09:00
parent 55a490736a
commit f69c550992
1 changed files with 1 additions and 10 deletions
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11
internal/graphicsdriver/directx/api_windows.go
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@ -38,6 +38,7 @@ func boolToUintptr(v bool) uintptr {
return 0
}
//go:nosplit
func syscallN(ptr uintptr, args ...uintptr) (r1, r2 uintptr, e windows.Errno) {
if ptr == 0 {
panic("directx: function pointer must not be 0")
@ -1790,8 +1791,6 @@ func (i *_ID3D12Resource) GetGPUVirtualAddress() _D3D12_GPU_VIRTUAL_ADDRESS {
}
func (i *_ID3D12Resource) Map(subresource uint32, pReadRange *_D3D12_RANGE) (uintptr, error) {
var retryCount int
retry:
var data uintptr
r, _, _ := syscallN(i.vtbl.Map, uintptr(unsafe.Pointer(i)),
uintptr(subresource), uintptr(unsafe.Pointer(pReadRange)), uintptr(unsafe.Pointer(&data)))
@ -1799,14 +1798,6 @@ retry:
if uint32(r) != uint32(windows.S_OK) {
return 0, fmt.Errorf("directx: ID3D12Resource::Map failed: HRESULT(%d)", uint32(r))
}
if data == 0 {
// This is very mysterious, but sometimes Map fails especially on tests with Warp and/or Proton (Steam Deck) (#2113).
if retryCount >= 5 {
return 0, fmt.Errorf("directx: ID3D12Resource::Map failed: nothing is mapped")
}
retryCount++
goto retry
}
return data, nil
}