Fail if pTextureCalc is NULL (#196)

Author: johnmach

Source/GmmLib/Resource/GmmResourceInfoCommon.cpp

@@ -447,6 +447,13 @@ GMM_STATUS GMM_STDCALL GmmLib::GmmResourceInfoCommon::Create(Context &GmmLibCont
     pPlatform    = GMM_OVERRIDE_PLATFORM_INFO(&Surf, GetGmmLibContext());
     pTextureCalc = GMM_OVERRIDE_TEXTURE_CALC(&Surf, GetGmmLibContext());
 
+    if (!pTextureCalc)
+    {
+        Status = GMM_ERROR;
+        GMM_ASSERTDPF(0, "Texture Calculation pointer is NULL.");
+        goto ERROR_CASE;
+    }
+
 #if defined(__GMM_KMD__) || !defined(_WIN32)
     if(!CreateParams.Flags.Info.ExistingSysMem)
 #else

Source/GmmLib/Resource/GmmResourceInfoCommonEx.cpp

@@ -443,6 +443,12 @@ uint8_t GMM_STDCALL GmmLib::GmmResourceInfoCommon::ValidateParams()
     pPlatformResource = GMM_OVERRIDE_PLATFORM_INFO(&Surf, GetGmmLibContext());
     pTextureCalc      = GMM_OVERRIDE_TEXTURE_CALC(&Surf, GetGmmLibContext());
 
+    if (!pTextureCalc)
+    {
+        GMM_ASSERTDPF(0, "Texture Calculation pointer is NULL.");
+        goto ERROR_CASE;
+    }
+
     __GMM_ASSERT(!(
     Surf.Flags.Gpu.Query &&
     !Surf.Flags.Info.Cacheable)); // Why query not set as cacheable? If not cacheable, what keeps from stolen memory (because STORE_DWORD/PIPE_CONTROL/etc. targets can't be in stolen)?

Source/GmmLib/Resource/GmmRestrictions.cpp

@@ -76,7 +76,10 @@ void GmmLib::GmmResourceInfoCommon::GetRestrictions(__GMM_BUFFER_TYPE &Restricti
 
     GMM_TEXTURE_CALC *pTextureCalc = NULL;
     pTextureCalc                   = GMM_OVERRIDE_TEXTURE_CALC(&Surf, GetGmmLibContext());
-    pTextureCalc->GetResRestrictions(&Surf, Restrictions);
+    if (pTextureCalc)
+    {
+        pTextureCalc->GetResRestrictions(&Surf, Restrictions);
+    }
 
     GMM_DPF_EXIT;
 }