Remove 'sampler_EnvMap'

ScriptableRenderPipeline/HDRenderPipeline/Material/GGXConvolution/BuildProbabilityTables.compute

 
 #include "ShaderLibrary/Common.hlsl"
 #include "ShaderLibrary/ImageBasedLighting.hlsl"
+#include "../../ShaderVariables.hlsl"
 
 /* --- Input --- */
 
 TEXTURECUBE(envMap);                      // Input cubemap
-SAMPLER(sampler_envMap);
 
 /* --- Output --- */
 
 
     float3 L1 = ConvertEquiarealToCubemap(u1, v);
     float3 L2 = ConvertEquiarealToCubemap(u2, v);
-    float3 c1 = SAMPLE_TEXTURECUBE_LOD(envMap, sampler_envMap, L1, 0).rgb;
-    float3 c2 = SAMPLE_TEXTURECUBE_LOD(envMap, sampler_envMap, L2, 0).rgb;
+    float3 c1 = SAMPLE_TEXTURECUBE_LOD(envMap, s_linear_clamp_sampler, L1, 0).rgb;
+    float3 c2 = SAMPLE_TEXTURECUBE_LOD(envMap, s_linear_clamp_sampler, L2, 0).rgb;
 
     // Compute the integral of the step function (row values).
     // TODO: process 4 texels per thread, and manually unroll.