obs-qsv11: Remove Intel discrete device ID checking

As Intel continues to add discrete graphics cards, maintaining a long
list of discrete device IDs to check against isn't wise. When i+I
platforms are detected, default to integrated graphics.

plugins/obs-qsv11/QSV_Encoder.cpp

@@ -79,7 +79,6 @@ bool prefer_igpu_enc(int *iGPUIndex)
 	int adapterIndex = 0;
 	bool hasIGPU = false;
 	bool hasDGPU = false;
-	bool isDG1Primary = false;
 
 	HMODULE hDXGI = LoadLibrary(L"dxgi.dll");
 	if (hDXGI == NULL) {
@@ -109,6 +108,7 @@ bool prefer_igpu_enc(int *iGPUIndex)
 		return false;
 	}
 
+	// Check for i+I cases (Intel discrete + Intel integrated graphics on the same system). Default will be integrated.
 	while (SUCCEEDED(pFactory->EnumAdapters(adapterIndex, &pAdapter))) {
 		DXGI_ADAPTER_DESC AdapterDesc = {};
 		if (SUCCEEDED(pAdapter->GetDesc(&AdapterDesc))) {
@@ -122,13 +122,6 @@ bool prefer_igpu_enc(int *iGPUIndex)
 				} else {
 					hasDGPU = true;
 				}
-				if ((AdapterDesc.DeviceId == 0x4905) ||
-				    (AdapterDesc.DeviceId == 0x4906) ||
-				    (AdapterDesc.DeviceId == 0x4907)) {
-					if (adapterIndex == 0) {
-						isDG1Primary = true;
-					}
-				}
 			}
 		}
 		adapterIndex++;
@@ -138,7 +131,7 @@ bool prefer_igpu_enc(int *iGPUIndex)
 	pFactory->Release();
 	FreeLibrary(hDXGI);
 
-	return hasIGPU && hasDGPU && isDG1Primary;
+	return hasIGPU && hasDGPU;
 }
 
 void qsv_encoder_version(unsigned short *major, unsigned short *minor)

plugins/obs-qsv11/obs-qsv11.c

@@ -752,12 +752,6 @@ static void *obs_qsv_create_tex(obs_data_t *settings, obs_encoder_t *encoder)
 		return obs_encoder_create_rerouted(encoder, "obs_qsv11_soft");
 	}
 
-	if (prefer_igpu_enc(NULL)) {
-		blog(LOG_INFO,
-		     ">>> prefer iGPU encoding, fall back to old qsv encoder");
-		return obs_encoder_create_rerouted(encoder, "obs_qsv11_soft");
-	}
-
 	blog(LOG_INFO, ">>> new qsv encoder");
 	return obs_qsv_create(settings, encoder);
 }