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Fix incorrect usage of GetLastError in LLW_Win32

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GetLastError must be called before any other function which could possibly
change it, otherwise we will lose the error code.

(backport from master)
This commit is contained in:
Tracy Ward
2019-10-04 08:56:03 -04:00
parent cdc4bd9da2
commit dfb524a547
1 changed files with 11 additions and 6 deletions
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src/arch/LowLevelWindow/LowLevelWindow_Win32.cpp
+11 -6
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@@ -214,10 +214,11 @@ RString LowLevelWindow_Win32::TryVideoMode( const VideoModeParams &p, bool &bNew
/* Set the pixel format. */
if( !SetPixelFormat(GraphicsWindow::GetHDC(), iPixelFormat, &pixfmt) )
{
DWORD err = GetLastError();
/* Destroy the window. */
DestroyGraphicsWindowAndOpenGLContext();
return werr_ssprintf( GetLastError(), "Pixel format failed" );
return werr_ssprintf( err, "Pixel format failed" );
}
DescribePixelFormat( GraphicsWindow::GetHDC(), iPixelFormat, sizeof(g_CurrentPixelFormat), &g_CurrentPixelFormat );
@@ -232,15 +233,17 @@ RString LowLevelWindow_Win32::TryVideoMode( const VideoModeParams &p, bool &bNew
g_HGLRC = wglCreateContext( GraphicsWindow::GetHDC() );
if ( g_HGLRC == nullptr )
{
DWORD err = GetLastError();
DestroyGraphicsWindowAndOpenGLContext();
return hr_ssprintf( GetLastError(), "wglCreateContext" );
return hr_ssprintf( err, "wglCreateContext" );
}
g_HGLRC_Background = wglCreateContext( GraphicsWindow::GetHDC() );
if( g_HGLRC_Background == nullptr )
{
DWORD err = GetLastError();
DestroyGraphicsWindowAndOpenGLContext();
return hr_ssprintf( GetLastError(), "wglCreateContext" );
return hr_ssprintf( err, "wglCreateContext" );
}
if( !wglShareLists(g_HGLRC, g_HGLRC_Background) )
@@ -252,8 +255,9 @@ RString LowLevelWindow_Win32::TryVideoMode( const VideoModeParams &p, bool &bNew
if( !wglMakeCurrent( GraphicsWindow::GetHDC(), g_HGLRC ) )
{
DWORD err = GetLastError();
DestroyGraphicsWindowAndOpenGLContext();
return hr_ssprintf( GetLastError(), "wglCreateContext" );
return hr_ssprintf( err, "wglCreateContext" );
}
}
return RString(); // we set the video mode successfully
@@ -268,8 +272,9 @@ void LowLevelWindow_Win32::BeginConcurrentRendering()
{
if( !wglMakeCurrent( GraphicsWindow::GetHDC(), g_HGLRC_Background ) )
{
LOG->Warn( hr_ssprintf(GetLastError(), "wglMakeCurrent") );
FAIL_M( hr_ssprintf(GetLastError(), "wglMakeCurrent") );
DWORD err = GetLastError();
LOG->Warn( hr_ssprintf(err, "wglMakeCurrent") );
FAIL_M( hr_ssprintf(err, "wglMakeCurrent") );
}
}