post merge: update shadow code

Assets/ScriptableRenderPipeline/MobileRenderPipeline/OnTileDeferredRenderPipeline.cs

 			};
 
 			// binding code. This needs to be in sync with ShadowContext.hlsl
-			ShadowContext.BindDel binder = (ShadowContext sc, CommandBuffer cb) =>
+			ShadowContext.BindDel binder = (ShadowContext sc, CommandBuffer cb, ComputeShader computeShader, int computeKernel) =>
 			{
 				// bind buffers
 				cb.SetGlobalBuffer("_ShadowDatasExp", s_ShadowDataBuffer);
 
 			UpdateShadowConstants (camera, cullResults);
 
-			m_ShadowMgr.RenderShadows( m_FrameId, loop, cullResults, cullResults.visibleLights );
+			CommandBuffer cmdShadow = CommandBufferPool.Get();
+			m_ShadowMgr.RenderShadows( m_FrameId, loop, cmdShadow, cullResults, cullResults.visibleLights );
-			m_ShadowMgr.BindResources( loop );
+			m_ShadowMgr.BindResources( cmdShadow, null, 0 );
+			loop.ExecuteCommandBuffer(cmdShadow);
+			CommandBufferPool.Release(cmdShadow);
 
 			loop.SetupCameraProperties(camera);
 			RenderGBuffer(cullResults, camera, loop);
 			uint shadowRequestCount = (uint)m_ShadowRequests.Count;
 			int[] shadowRequests = m_ShadowRequests.ToArray();
 			int[] shadowDataIndices;
-			m_ShadowMgr.ProcessShadowRequests(m_FrameId, inputs, camera, inputs.visibleLights,
+			m_ShadowMgr.ProcessShadowRequests(m_FrameId, inputs, camera, false, inputs.visibleLights,
 				ref shadowRequestCount, shadowRequests, out shadowDataIndices);
 
 			// update the visibleLights with the shadow information

Assets/ScriptableRenderPipeline/MobileRenderPipeline/Shaders/LightingTemplate.hlsl

 	#if defined (SPOT)	
 		float3 tolight = _LightPos.xyz - wpos;
 		half3 lightDir = normalize (tolight);
-		
+		float dist = length(tolight);
+
 		float4 uvCookie = mul (unity_WorldToLight, float4(wpos,1));
 		colorCookie = tex2Dlod (_LightTexture0, float4(uvCookie.xy / uvCookie.w, 0, 0));
 		[branch]if (_useLegacyCookies) {
 		atten *= tex2D (_LightTextureB0, att.rr).UNITY_ATTEN_CHANNEL;
 
 		if (_LightIndexForShadowMatrixArray >= 0)
-			atten *= GetPunctualShadowAttenuation(shadowContext, wpos, 0.0.xxx, _LightIndexForShadowMatrixArray, 0.0.xxx);
+			atten *= GetPunctualShadowAttenuation(shadowContext, wpos, 0.0.xxx, _LightIndexForShadowMatrixArray, float4(lightDir, dist));
 	
 	// directional light case		
 	#elif defined (DIRECTIONAL) || defined (DIRECTIONAL_COOKIE)
 	// point light case	
 	#elif defined (POINT) || defined (POINT_COOKIE)
 		float3 tolight = wpos - _LightPos.xyz;
+		float dist = length(tolight);
 		half3 lightDir = -normalize (tolight);
 		
 		float att = dot(tolight, tolight) * _LightPos.w;
-			atten *= GetPunctualShadowAttenuation(shadowContext, wpos, 0.0.xxx, _LightIndexForShadowMatrixArray, lightDir);
+			atten *= GetPunctualShadowAttenuation(shadowContext, wpos, 0.0.xxx, _LightIndexForShadowMatrixArray, float4(lightDir, dist));
 
 		#if defined (POINT_COOKIE)
 			colorCookie = texCUBElod(_LightTexture0, float4(mul(unity_WorldToLight, float4(wpos,1)).xyz, 0));

Assets/ScriptableRenderPipeline/MobileRenderPipeline/Shaders/UnityStandardForwardMobile.cginc

 			[branch]
 			if (shadowIdx >= 0 && _transparencyShadows)
 			{
-				float shadow = GetPunctualShadowAttenuation(shadowContext, vPw, 0.0.xxx, shadowIdx, vLw);
+				float shadow = GetPunctualShadowAttenuation(shadowContext, vPw, 0.0.xxx, shadowIdx, float4(vLw, dist));
 				atten *= shadow;
 			}
 
 			[branch]
 			if (shadowIdx >= 0 && _transparencyShadows)
 			{
-				float shadow = GetPunctualShadowAttenuation(shadowContext, vPw, 0.0.xxx, shadowIdx, 0.0.xxx);
+				float shadow = GetPunctualShadowAttenuation(shadowContext, vPw, 0.0.xxx, shadowIdx, float4(vLw, dist));
 				atten *= shadow;
 			}