Fixed shadow related errors caused by changeing atlas creation code.

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Lighting/LightLoop/Shadow.hlsl

 {
 	return GetDirectionalShadowAttenuation( shadowContext, positionWS, normalWS, shadowDataIndex, L );
 }
+
+float3 GetDirectionalShadowClosestSample( ShadowContext shadowContext, real3 positionWS, real3 normalWS, int index, real4 L )
+{
+	return EvalShadow_GetClosestSample_Cascade( shadowContext, shadowContext.tex2DArray[SHADOW_DISPATCH_DIR_TEX], positionWS, normalWS, index, L );
+}
+
 #endif
 
 
 float GetPunctualShadowAttenuation( ShadowContext shadowContext, float3 positionWS, float3 normalWS, int shadowDataIndex, float3 L, float L_dist, float2 positionSS )
 {
 	return GetPunctualShadowAttenuation( shadowContext, positionWS, normalWS, shadowDataIndex, L, L_dist );
+}
+
+float3 GetPunctualShadowClosestSample( ShadowContext shadowContext, real3 positionWS, int index, real3 L )
+{
+	return EvalShadow_GetClosestSample_Punctual( shadowContext, shadowContext.tex2DArray[SHADOW_DISPATCH_PUNC_TEX], positionWS, index, L );
 }
 #endif
 

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Lighting/LightLoop/ShadowContext.hlsl

 #ifndef LIGHTLOOP_SHADOW_CONTEXT_HLSL
 #define LIGHTLOOP_SHADOW_CONTEXT_HLSL
 
-#define SHADOWCONTEXT_MAX_TEX2DARRAY   4
+#define SHADOWCONTEXT_MAX_TEX2DARRAY   1
-#define SHADOWCONTEXT_MAX_SAMPLER      3
+#define SHADOWCONTEXT_MAX_SAMPLER      0
+#if SHADOWCONTEXT_MAX_TEX2DARRAY == 4
 TEXTURE2D_ARRAY(_ShadowmapExp_VSM_0);
 SAMPLER(sampler_ShadowmapExp_VSM_0);
 
 TEXTURE2D_ARRAY(_ShadowmapExp_VSM_2);
 SAMPLER(sampler_ShadowmapExp_VSM_2);
+#endif
 
 TEXTURE2D_ARRAY(_ShadowmapExp_PCF);
 SAMPLER_CMP(sampler_ShadowmapExp_PCF);
 	ShadowContext sc;
 	sc.shadowDatas     = _ShadowDatasExp;
 	sc.payloads        = _ShadowPayloads;
-    sc.tex2DArray[0]   = _ShadowmapExp_PCF;
-    sc.tex2DArray[1]   = _ShadowmapExp_VSM_0;
+	sc.tex2DArray[0]   = _ShadowmapExp_PCF;
+	sc.compSamplers[0] = sampler_ShadowmapExp_PCF;
+#if SHADOWCONTEXT_MAX_TEX2DARRAY == 4
+	sc.tex2DArray[1]   = _ShadowmapExp_VSM_0;
-    sc.compSamplers[0] = sampler_ShadowmapExp_PCF;
-    sc.samplers[0]	   = sampler_ShadowmapExp_VSM_0;
+#endif
+#if SHADOWCONTEXT_MAX_SAMPLER == 3
+	sc.samplers[0]	   = sampler_ShadowmapExp_VSM_0;
+#endif
 	return sc;
 }
 

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Material/Lit/Lit.hlsl

     {
         // TODO: perform bilinear filtering of the shadow map.
         // Recompute transmittance using the thickness value computed from the shadow map.
-    #if 0
-        // Does not work, I get a compiler crash...
-        float3 occluderPosWS = EvalShadow_GetClosestSample_Cascade(lightLoopContext.shadowContext, posInput.positionWS, bsdfData.normalWS, lightData.shadowIndex, float4(L, 0));
-    #else
-        #define SHADOW_DISPATCH_DIR_TEX 3 // Manually keep it in sync with Shadow.hlsl...
-        float3 occluderPosWS = EvalShadow_GetClosestSample_Cascade(lightLoopContext.shadowContext, lightLoopContext.shadowContext.tex2DArray[SHADOW_DISPATCH_DIR_TEX], posInput.positionWS, bsdfData.normalWS, lightData.shadowIndex, float4(L, 0));
-    #endif
+        float3 occluderPosWS = GetDirectionalShadowClosestSample(lightLoopContext.shadowContext, posInput.positionWS, bsdfData.normalWS, lightData.shadowIndex, float4(L, 0));
 
         float thicknessInUnits       = distance(posInput.positionWS, occluderPosWS);
         float thicknessInMeters      = thicknessInUnits * _WorldScales[bsdfData.diffusionProfile].x;
     {
         // TODO: perform bilinear filtering of the shadow map.
         // Recompute transmittance using the thickness value computed from the shadow map.
-    #if 0
-        // Does not work, I get a compiler crash...
-        float3 occluderPosWS = EvalShadow_GetClosestSample_Punctual(lightLoopContext.shadowContext, posInput.positionWS, lightData.shadowIndex, L);
-    #else
-        #define SHADOW_DISPATCH_PUNC_TEX 3 // Manually keep it in sync with Shadow.hlsl...
-        float3 occluderPosWS = EvalShadow_GetClosestSample_Punctual(lightLoopContext.shadowContext, lightLoopContext.shadowContext.tex2DArray[SHADOW_DISPATCH_PUNC_TEX], posInput.positionWS, lightData.shadowIndex, L);
-    #endif
+        float3 occluderPosWS = GetPunctualShadowClosestSample(lightLoopContext.shadowContext, posInput.positionWS, lightData.shadowIndex, L);
 
         float thicknessInUnits       = distance(posInput.positionWS, occluderPosWS);
         float thicknessInMeters      = thicknessInUnits * _WorldScales[bsdfData.diffusionProfile].x;