Remove redundant samplers in LightLoopDef.hlsl

ScriptableRenderPipeline/HDRenderPipeline/Lighting/LightLoop/LightLoopDef.hlsl

 
 // Used by directional and spot lights
 TEXTURE2D_ARRAY(_CookieTextures);
-SAMPLER(sampler_CookieTextures);
-SAMPLER(sampler_CookieCubeTextures);
-SAMPLER(sampler_EnvTextures);
 
 TEXTURE2D(_DeferredShadowTexture);
 
 // Used by directional and spot lights.
 float3 SampleCookie2D(LightLoopContext lightLoopContext, float2 coord, int index)
 {
-    return SAMPLE_TEXTURE2D_ARRAY_LOD(_CookieTextures, sampler_CookieTextures, coord, index, 0).rgb;
+    return SAMPLE_TEXTURE2D_ARRAY_LOD(_CookieTextures, s_linear_clamp_sampler, coord, index, 0).rgb;
-    return SAMPLE_TEXTURECUBE_ARRAY_LOD_ABSTRACT(_CookieCubeTextures, sampler_CookieCubeTextures, coord, index, 0).rgb;
+    return SAMPLE_TEXTURECUBE_ARRAY_LOD_ABSTRACT(_CookieCubeTextures, s_linear_clamp_sampler, coord, index, 0).rgb;
 }
 
 //-----------------------------------------------------------------------------
     // This code will be inlined as lightLoopContext is hardcoded in the light loop
     if (lightLoopContext.sampleReflection == SINGLE_PASS_CONTEXT_SAMPLE_REFLECTION_PROBES)
     {
-        return SAMPLE_TEXTURECUBE_ARRAY_LOD_ABSTRACT(_EnvTextures, sampler_EnvTextures, texCoord, index, lod);
+        return SAMPLE_TEXTURECUBE_ARRAY_LOD_ABSTRACT(_EnvTextures, s_trilinear_clamp_sampler, texCoord, index, lod);
     }
     else // SINGLE_PASS_SAMPLE_SKY
     {

ScriptableRenderPipeline/HDRenderPipeline/ShaderVariables.hlsl

 // These are the samplers available in the HDRenderPipeline.
 // Avoid declaring extra samplers as they are 4x SGPR each on GCN.
 SAMPLER(s_linear_clamp_sampler);
-SAMPLER(s_linear_repeat_sampler);
 SAMPLER(s_trilinear_clamp_sampler);
 
 // ----------------------------------------------------------------------------