diff --git a/WickedEngine/ShaderInterop_Postprocess.h b/WickedEngine/ShaderInterop_Postprocess.h
index b2935e329..1165290fb 100644
--- a/WickedEngine/ShaderInterop_Postprocess.h
+++ b/WickedEngine/ShaderInterop_Postprocess.h
@@ -17,6 +17,9 @@ CBUFFER(PostProcessCB, CBSLOT_RENDERER_POSTPROCESS)
 #define lineardepth_inputresolution xPPParams0.xy
 #define lineardepth_inputresolution_rcp xPPParams0.zw
 
+#define ssr_input_maxmip xPPParams0.x
+#define ssr_input_resolution_max xPPParams0.y
+
 #define ssao_range xPPParams0.x
 #define ssao_samplecount xPPParams0.y
 #define ssao_power xPPParams0.z
diff --git a/WickedEngine/ssr_resolveCS.hlsl b/WickedEngine/ssr_resolveCS.hlsl
index b544b5945..2249a5a84 100644
--- a/WickedEngine/ssr_resolveCS.hlsl
+++ b/WickedEngine/ssr_resolveCS.hlsl
@@ -74,7 +74,6 @@ void main(uint3 DTid : SV_DispatchThreadID)
     float specularConeTangent = lerp(0.0, roughness * (1.0 - BRDFBias), NdotV * sqrt(roughness));
     specularConeTangent *= lerp(saturate(NdotV * 2), 1.0f, sqrt(roughness));
 
-    const float maxMipLevel = 11.0f - 1.0f;
     const uint2 Random = Rand3DPCG16(int3((DTid.xy + 0.5f), g_xFrame_FrameCount)).xy;
     
     float4 result = 0.0f;
@@ -87,7 +86,7 @@ void main(uint3 DTid : SV_DispatchThreadID)
         float2 offsetRotation = (HammersleyRandom(i, NumResolve, Random) * 2.0 - 1.0) * roughnessSequenceSize;
         float2x2 offsetRotationMatrix = float2x2(offsetRotation.x, offsetRotation.y, -offsetRotation.y, offsetRotation.x);
         
-        float2 offsetUV = offset[i] * (1.0f / xPPResolution);
+        float2 offsetUV = offset[i] * xPPResolution_rcp;
         offsetUV = uv + mul(offsetRotationMatrix, offsetUV) * CalculateTailDirection(N);
         
         float4 raytraceSource = texture_raytrace.SampleLevel(sampler_point_clamp, offsetUV, 0);
@@ -100,7 +99,7 @@ void main(uint3 DTid : SV_DispatchThreadID)
         float  iterationStep = maskSource.y;
 
         float intersectionCircleRadius = specularConeTangent * length(hitPixel - uv);
-        float sourceMip = clamp(log2(intersectionCircleRadius * max(xPPResolution.x, xPPResolution.y)), 0.0, maxMipLevel) * resolveMip;
+        float sourceMip = clamp(log2(intersectionCircleRadius * ssr_input_resolution_max), 0.0, ssr_input_maxmip) * resolveMip;
                 
         float4 sampleColor;
         sampleColor.rgb = texture_main.SampleLevel(sampler_linear_clamp, hitPixel, sourceMip).xyz;
diff --git a/WickedEngine/wiRenderer.cpp b/WickedEngine/wiRenderer.cpp
index 81c1b90ec..463a2f2ae 100644
--- a/WickedEngine/wiRenderer.cpp
+++ b/WickedEngine/wiRenderer.cpp
@@ -8825,6 +8825,7 @@ void Postprocess_SSR(
 
 	device->UnbindResources(TEXSLOT_RENDERPATH_SSR, 1, cmd);
 
+	const TextureDesc& input_desc = input.GetDesc();
 	const TextureDesc& desc = output.GetDesc();
 
 	static TextureDesc initialized_desc;
@@ -8865,6 +8866,8 @@ void Postprocess_SSR(
 	cb.xPPResolution.y = desc.Height / 2;
 	cb.xPPResolution_rcp.x = 1.0f / cb.xPPResolution.x;
 	cb.xPPResolution_rcp.y = 1.0f / cb.xPPResolution.y;
+	cb.ssr_input_maxmip = float(input_desc.MipLevels - 1);
+	cb.ssr_input_resolution_max = (float)std::max(input_desc.Width, input_desc.Height);
 	device->UpdateBuffer(&constantBuffers[CBTYPE_POSTPROCESS], &cb, cmd);
 	device->BindConstantBuffer(CS, &constantBuffers[CBTYPE_POSTPROCESS], CB_GETBINDSLOT(PostProcessCB), cmd);
 
diff --git a/WickedEngine/wiVersion.cpp b/WickedEngine/wiVersion.cpp
index 80cdb6c60..95a285c95 100644
--- a/WickedEngine/wiVersion.cpp
+++ b/WickedEngine/wiVersion.cpp
@@ -9,7 +9,7 @@ namespace wiVersion
 	// minor features, major updates
 	const int minor = 38;
 	// minor bug fixes, alterations, refactors, updates
-	const int revision = 18;
+	const int revision = 19;
 
 
 	long GetVersion()