Implement ZERO_INITIALIZE_ARRAY()

Assets/ScriptableRenderPipeline/HDRenderPipeline/Lighting/TilePass/Resources/lightlistbuild-clustered.compute

 
 	// All our cull data are in the same list, but at render time envLights are separated so we need to shit the index
 	// to make it work correctly
-	int shiftIndex[LIGHTCATEGORY_COUNT] = {0, 0, _EnvLightIndexShift}; // 3 for now, will throw an error if we change LIGHTCATEGORY_COUNT
+	int shiftIndex[LIGHTCATEGORY_COUNT];
+	ZERO_INITIALIZE_ARRAY(int, shiftIndex, LIGHTCATEGORY_COUNT);
+	shiftIndex[LIGHTCATEGORY_COUNT - 1] = _EnvLightIndexShift;
-	int categoryListCount[LIGHTCATEGORY_COUNT]={0,0,0};		// direct light count and reflection lights
+	int categoryListCount[LIGHTCATEGORY_COUNT]; // direct light count and reflection lights
+	ZERO_INITIALIZE_ARRAY(int, categoryListCount, LIGHTCATEGORY_COUNT);
 	uint offs = start;
 	for(int ll=0; ll<iNrCoarseLights; ll+=4)
 	{

Assets/ScriptableRenderPipeline/HDRenderPipeline/Lighting/TilePass/Resources/lightlistbuild.compute

 #endif
 groupshared int ldsNrLightsFinal;
 
-groupshared int ldsCategoryListCount[LIGHTCATEGORY_COUNT];		// since LIGHTCATEGORY_COUNT is 3
+groupshared int ldsCategoryListCount[LIGHTCATEGORY_COUNT];
 
 #ifdef PERFORM_SPHERICAL_INTERSECTION_TESTS
 groupshared uint lightOffsSph;
 
 	// All our cull data are in the same list, but at render time envLights are separated so we need to shit the index
 	// to make it work correctly
-	int shiftIndex[LIGHTCATEGORY_COUNT] = {0, 0, _EnvLightIndexShift}; // 3 for now, will throw an error if we change LIGHTCATEGORY_COUNT
+	int shiftIndex[LIGHTCATEGORY_COUNT];
+	ZERO_INITIALIZE_ARRAY(int, shiftIndex, LIGHTCATEGORY_COUNT);
+	shiftIndex[LIGHTCATEGORY_COUNT - 1] = _EnvLightIndexShift;
 
 	for(int category=0; category<LIGHTCATEGORY_COUNT; category++)
 	{

Assets/ScriptableRenderPipeline/ShaderLibrary/API/D3D11.hlsl

 // Initialize arbitrary structure with zero values.
 // Do not exist on some platform, in this case we need to have a standard name that call a function that will initialize all parameters to 0
 #define ZERO_INITIALIZE(type, name) name = (type)0;
+#define ZERO_INITIALIZE_ARRAY(type, name, arraySize) { for (int arrayIndex = 0; arrayIndex < arraySize; arrayIndex++) { name[arrayIndex] = (type)0; } }
 
 // Texture util abstraction
 

Assets/ScriptableRenderPipeline/ShaderLibrary/API/Metal.hlsl

 // Initialize arbitrary structure with zero values.
 // Do not exist on some platform, in this case we need to have a standard name that call a function that will initialize all parameters to 0
 #define ZERO_INITIALIZE(type, name) name = (type)0;
+#define ZERO_INITIALIZE_ARRAY(type, name, arraySize) { for (int arrayIndex = 0; arrayIndex < arraySize; arrayIndex++) { name[arrayIndex] = (type)0; } }
 
 // Texture util abstraction
 

Assets/ScriptableRenderPipeline/ShaderLibrary/API/PSSL.hlsl

 // Initialize arbitrary structure with zero values.
 // Do not exist on some platform, in this case we need to have a standard name that call a function that will initialize all parameters to 0
 #define ZERO_INITIALIZE(type, name) name = (type)0;
+#define ZERO_INITIALIZE_ARRAY(type, name, arraySize) { for (int arrayIndex = 0; arrayIndex < arraySize; arrayIndex++) { name[arrayIndex] = (type)0; } }
 
 // Texture util abstraction