DisplayGPUScaling
Demonstrates how to obtain the display GPU scaling when programming with ADLX and perform related operations.
Command Prompts
| Command Prompt | Description |
|---|---|
| 1 | Display GPU scaling support. |
| 2 | Get GPU scaling state. |
| 3 | Set current GPU scaling to disabled. |
| 4 | Set current GPU scaling to enabled. |
| M/m | Display the command prompt menu. |
| Q/q | Terminate the application. |
Sample Path
/Samples/C/Display/DisplayGPUScaling
Code
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//
// Copyright (c) 2021 - 2025 Advanced Micro Devices, Inc. All rights reserved.
//
//-------------------------------------------------------------------------------------------------
#include "SDK/ADLXHelper/Windows/C/ADLXHelper.h"
#include "SDK/Include/IDisplaySettings.h"
#include "SDK/Include/IDisplays.h"
// Display displayGPUScaling support
void ShowDisplayGPUScalingSupport(IADLXDisplayServices* pDisplayService, IADLXDisplay* pDisplay);
// Display current displayGPUScaling state
void GetGPUScalingState(IADLXDisplayServices* pDisplayService, IADLXDisplay* pDisplay);
// Set displayGPUScaling
void SetGPUScalingState(IADLXDisplayServices* pDisplayService, IADLXDisplay* pDisplay, const int key);
// Main menu
void MainMenu();
// Menu action control
void MenuControl(IADLXDisplayServices* pDisplayService, IADLXDisplay* pDisplay);
// Wait for exit with error message
int WaitAndExit(const char* msg, const int retCode);
int main()
{
// Define return code
ADLX_RESULT res = ADLX_FAIL ;
// Initialize ADLX
res = ADLXHelper_Initialize();
if (ADLX_SUCCEEDED (res))
{
// Get system services
IADLXSystem* sys = ADLXHelper_GetSystemServices();
// Get display service
IADLXDisplayServices* displayService = NULL;
res = sys->pVtbl->GetDisplaysServices(sys, &displayService);
if (ADLX_SUCCEEDED (res))
{
// Get display list
IADLXDisplayList* displayList = NULL;
res = displayService->pVtbl->GetDisplays(displayService, &displayList);
if (ADLX_SUCCEEDED (res))
{
// Inspect for the first display in the list
adlx_uint it = 0;
IADLXDisplay* display = NULL;
res = displayList->pVtbl->At_DisplayList(displayList, it, &display);
if (ADLX_SUCCEEDED (res))
{
// Display main menu options
MainMenu();
// Get and execute the selection
MenuControl(displayService, display);
}
// Release the display interface
if (NULL != display)
{
display->pVtbl->Release(display);
display = NULL;
}
}
// Release the displayList interface
if (NULL != displayList)
{
displayList->pVtbl->Release(displayList);
displayList = NULL;
}
}
// Release the displayService interface
if (NULL != displayService)
{
displayService->pVtbl->Release(displayService);
displayService = NULL;
}
}
else
{
return WaitAndExit("ADLX initialization failed", 0);
}
// Destroy ADLX
res = ADLXHelper_Terminate();
printf("Destroy ADLX res: %d\\n", res);
// Pause to see the print out
system("pause");
return 0;
}
void ShowDisplayGPUScalingSupport(IADLXDisplayServices* pDisplayService, IADLXDisplay* pDisplay)
{
IADLXDisplayGPUScaling* pDisplayGPUScaling = NULL;
ADLX_RESULT res = pDisplayService->pVtbl->GetGPUScaling(pDisplayService, pDisplay, &pDisplayGPUScaling);
if (ADLX_SUCCEEDED (res))
{
printf(" === Get GPUScaling supported ===\\n");
adlx_bool supported = false;
res = pDisplayGPUScaling->pVtbl->IsSupported(pDisplayGPUScaling, &supported);
printf("\\tIsSupported, res %d, supported: %s\\n", res, supported ? "true" : "false");
pDisplayGPUScaling->pVtbl->Release(pDisplayGPUScaling);
}
}
void GetGPUScalingState(IADLXDisplayServices* pDisplayService, IADLXDisplay* pDisplay)
{
IADLXDisplayGPUScaling* pDisplayGPUScaling = NULL;
ADLX_RESULT res = pDisplayService->pVtbl->GetGPUScaling(pDisplayService, pDisplay, &pDisplayGPUScaling);
if (ADLX_SUCCEEDED (res))
{
printf(" === Get GPUScaling enabled ===\\n");
adlx_bool enabled = false;
res = pDisplayGPUScaling->pVtbl->IsEnabled(pDisplayGPUScaling, &enabled);
printf("\\tIsEnabled, res: %d, enabled: %s\\n", res, enabled ? "true" : "false");
pDisplayGPUScaling->pVtbl->Release(pDisplayGPUScaling);
}
}
void SetGPUScalingState(IADLXDisplayServices* pDisplayService, IADLXDisplay* pDisplay, const int key)
{
IADLXDisplayGPUScaling* pDisplayGPUScaling = NULL;
ADLX_RESULT res = pDisplayService->pVtbl->GetGPUScaling(pDisplayService, pDisplay, &pDisplayGPUScaling);
if (ADLX_SUCCEEDED (res))
{
printf(" === Set GPU scaling ===\\n");
ADLX_RESULT res = ADLX_FAIL ;
switch (key)
{
// Set GPU scaling disabled
case 0:
res = pDisplayGPUScaling->pVtbl->SetEnabled(pDisplayGPUScaling, false);
break;
// Set GPU scaling enabled
case 1:
res = pDisplayGPUScaling->pVtbl->SetEnabled(pDisplayGPUScaling, true);
break;
default:
break;
}
printf("\\treturn code is: %d (0 means Success)\\n", res);
pDisplayGPUScaling->pVtbl->Release(pDisplayGPUScaling);
}
}
void MainMenu()
{
printf("\\tChoose from following options:\\n");
printf("\\t->Press 1 to display GPU scaling support\\n");
printf("\\t->Press 2 to get GPU scaling state\\n");
printf("\\t->Press 3 to set current GPU scaling to disabled\\n");
printf("\\t->Press 4 to set current GPU scaling to enabled\\n");
printf("\\t->Press Q/q to terminate the application\\n");
printf("\\t->Press M/m to display main menu options\\n");
}
// Menu action control
void MenuControl(IADLXDisplayServices* pDisplayService, IADLXDisplay* pDisplay)
{
int num = 0;
while ((num = getchar()) != 'q' && num != 'Q')
{
switch (num)
{
// Display displayGPUScaling support
case '1':
ShowDisplayGPUScalingSupport(pDisplayService, pDisplay);
break;
// Display current displayGPUScaling state
case '2':
GetGPUScalingState(pDisplayService, pDisplay);
break;
// Set displayGPUScaling
case '3':
case '4':
SetGPUScalingState(pDisplayService, pDisplay, num - '3');
break;
// Display main menu options
case 'm':
case 'M':
MainMenu();
break;
default:
break;
}
}
}
// Wait for exit with error message
int WaitAndExit(const char* msg, const int retCode)
{
// Printout the message and pause to see it before returning the desired code
if (NULL != msg)
printf("%s\\n", msg);
system("pause");
return retCode;
}
