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Fix no monitors found on VMware Windows guest

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Monitor enumeration now switches to adapters if no displays are
connected to active adapters.  This should provide usable monitor
objects on headless and VMware guest systems.

Fixes #441.
Fixes #556.
Fixes #594.
This commit is contained in:
Camilla Berglund
2015-10-19 00:46:26 +02:00
parent 239ede725d
commit 4b63f70285
2 changed files with 108 additions and 59 deletions
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src/win32_monitor.c
+107 -59
View File
@@ -33,6 +33,59 @@
#include <malloc.h>
// Create monitor from an adapter and (optionally) a display
//
static _GLFWmonitor* createMonitor(DISPLAY_DEVICEW* adapter,
DISPLAY_DEVICEW* display)
{
_GLFWmonitor* monitor;
char* name;
HDC dc;
if (display)
name = _glfwCreateUTF8FromWideStringWin32(display->DeviceString);
else
name = _glfwCreateUTF8FromWideStringWin32(adapter->DeviceString);
if (!name)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Win32: Failed to convert string to UTF-8");
return NULL;
}
dc = CreateDCW(L"DISPLAY", adapter->DeviceName, NULL, NULL);
monitor = _glfwAllocMonitor(name,
GetDeviceCaps(dc, HORZSIZE),
GetDeviceCaps(dc, VERTSIZE));
DeleteDC(dc);
free(name);
if (adapter->StateFlags & DISPLAY_DEVICE_MODESPRUNED)
monitor->win32.modesPruned = GLFW_TRUE;
wcscpy(monitor->win32.adapterName, adapter->DeviceName);
WideCharToMultiByte(CP_UTF8, 0,
adapter->DeviceName, -1,
monitor->win32.publicAdapterName,
sizeof(monitor->win32.publicAdapterName),
NULL, NULL);
if (display)
{
wcscpy(monitor->win32.displayName, display->DeviceName);
WideCharToMultiByte(CP_UTF8, 0,
display->DeviceName, -1,
monitor->win32.publicDisplayName,
sizeof(monitor->win32.publicDisplayName),
NULL, NULL);
}
return monitor;
}
//////////////////////////////////////////////////////////////////////////
////// GLFW internal API //////
//////////////////////////////////////////////////////////////////////////
@@ -96,17 +149,18 @@ void _glfwRestoreVideoModeWin32(_GLFWmonitor* monitor)
_GLFWmonitor** _glfwPlatformGetMonitors(int* count)
{
int found = 0;
DWORD adapterIndex, displayIndex, primaryIndex = 0;
DISPLAY_DEVICEW adapter, display;
GLFWbool hasDisplays = GLFW_FALSE;
_GLFWmonitor** monitors = NULL;
DWORD adapterIndex, displayIndex;
*count = 0;
// HACK: Check if any active adapters have connected displays
// If not, this is a headless system or a VMware guest
for (adapterIndex = 0; ; adapterIndex++)
{
DISPLAY_DEVICEW adapter;
int widthMM, heightMM;
HDC dc;
ZeroMemory(&adapter, sizeof(DISPLAY_DEVICEW));
adapter.cb = sizeof(DISPLAY_DEVICEW);
@@ -116,71 +170,65 @@ _GLFWmonitor** _glfwPlatformGetMonitors(int* count)
if (!(adapter.StateFlags & DISPLAY_DEVICE_ACTIVE))
continue;
dc = CreateDCW(L"DISPLAY", adapter.DeviceName, NULL, NULL);
widthMM = GetDeviceCaps(dc, HORZSIZE);
heightMM = GetDeviceCaps(dc, VERTSIZE);
DeleteDC(dc);
ZeroMemory(&display, sizeof(DISPLAY_DEVICEW));
display.cb = sizeof(DISPLAY_DEVICEW);
for (displayIndex = 0; ; displayIndex++)
if (EnumDisplayDevicesW(adapter.DeviceName, 0, &display, 0))
{
DISPLAY_DEVICEW display;
_GLFWmonitor* monitor;
char* name;
ZeroMemory(&display, sizeof(DISPLAY_DEVICEW));
display.cb = sizeof(DISPLAY_DEVICEW);
if (!EnumDisplayDevicesW(adapter.DeviceName, displayIndex, &display, 0))
break;
name = _glfwCreateUTF8FromWideStringWin32(display.DeviceString);
if (!name)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Win32: Failed to convert string to UTF-8");
continue;
}
monitor = _glfwAllocMonitor(name, widthMM, heightMM);
free(name);
if (adapter.StateFlags & DISPLAY_DEVICE_MODESPRUNED)
monitor->win32.modesPruned = GLFW_TRUE;
wcscpy(monitor->win32.adapterName, adapter.DeviceName);
wcscpy(monitor->win32.displayName, display.DeviceName);
WideCharToMultiByte(CP_UTF8, 0,
adapter.DeviceName, -1,
monitor->win32.publicAdapterName,
sizeof(monitor->win32.publicAdapterName),
NULL, NULL);
WideCharToMultiByte(CP_UTF8, 0,
display.DeviceName, -1,
monitor->win32.publicDisplayName,
sizeof(monitor->win32.publicDisplayName),
NULL, NULL);
found++;
monitors = realloc(monitors, sizeof(_GLFWmonitor*) * found);
monitors[found - 1] = monitor;
if (adapter.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE &&
displayIndex == 0)
{
_GLFW_SWAP_POINTERS(monitors[0], monitors[found - 1]);
}
hasDisplays = GLFW_TRUE;
break;
}
}
for (adapterIndex = 0; ; adapterIndex++)
{
ZeroMemory(&adapter, sizeof(DISPLAY_DEVICEW));
adapter.cb = sizeof(DISPLAY_DEVICEW);
if (!EnumDisplayDevicesW(NULL, adapterIndex, &adapter, 0))
break;
if (!(adapter.StateFlags & DISPLAY_DEVICE_ACTIVE))
continue;
if (adapter.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE)
primaryIndex = found;
if (hasDisplays)
{
for (displayIndex = 0; ; displayIndex++)
{
ZeroMemory(&display, sizeof(DISPLAY_DEVICEW));
display.cb = sizeof(DISPLAY_DEVICEW);
if (!EnumDisplayDevicesW(adapter.DeviceName, displayIndex, &display, 0))
break;
found++;
monitors = realloc(monitors, sizeof(_GLFWmonitor*) * found);
monitors[found - 1] = createMonitor(&adapter, &display);
}
}
else
{
found++;
monitors = realloc(monitors, sizeof(_GLFWmonitor*) * found);
monitors[found - 1] = createMonitor(&adapter, NULL);
}
}
_GLFW_SWAP_POINTERS(monitors[0], monitors[primaryIndex]);
*count = found;
return monitors;
}
GLFWbool _glfwPlatformIsSameMonitor(_GLFWmonitor* first, _GLFWmonitor* second)
{
return wcscmp(first->win32.displayName, second->win32.displayName) == 0;
if (wcslen(first->win32.displayName))
return wcscmp(first->win32.displayName, second->win32.displayName) == 0;
else
return wcscmp(first->win32.adapterName, second->win32.adapterName) == 0;
}
void _glfwPlatformGetMonitorPos(_GLFWmonitor* monitor, int* xpos, int* ypos)