diff --git a/renderdoc/data/glsl/gl_texsample.h b/renderdoc/data/glsl/gl_texsample.h
index 13c4788f7..f778058d3 100644
--- a/renderdoc/data/glsl/gl_texsample.h
+++ b/renderdoc/data/glsl/gl_texsample.h
@@ -88,7 +88,7 @@ uvec4 SampleTextureUInt4(int type, vec2 pos, float slice, int mipLevel, int samp
   }
   else    // if (type == RESTYPE_TEX3D)
   {
-    col = texelFetch(texUInt3D, ivec3(pos * texRes.xy, slice), mipLevel);
+    col = texelFetch(texUInt3D, ivec3(pos * texRes.xy, slice + 0.001f), mipLevel);
   }
 
   return col;
@@ -166,7 +166,7 @@ ivec4 SampleTextureSInt4(int type, vec2 pos, float slice, int mipLevel, int samp
   }
   else    // if (type == RESTYPE_TEX3D)
   {
-    col = texelFetch(texSInt3D, ivec3(pos * texRes.xy, slice), mipLevel);
+    col = texelFetch(texSInt3D, ivec3(pos * texRes.xy, slice + 0.001f), mipLevel);
   }
 
   return col;
@@ -281,7 +281,7 @@ vec4 SampleTextureFloat4(int type, vec2 pos, float slice, int mipLevel, int samp
   }
   else if(type == RESTYPE_TEX3D)
   {
-    col = textureLod(tex3D, vec3(pos, slice / texRes.z), float(mipLevel));
+    col = textureLod(tex3D, vec3(pos, (slice + 0.001f) / texRes.z), float(mipLevel));
   }
   else if(type == RESTYPE_TEXCUBE)
   {
diff --git a/renderdoc/data/glsl/gles_texsample.h b/renderdoc/data/glsl/gles_texsample.h
index 40871c90e..6bf3bd83a 100644
--- a/renderdoc/data/glsl/gles_texsample.h
+++ b/renderdoc/data/glsl/gles_texsample.h
@@ -84,7 +84,7 @@ uvec4 SampleTextureUInt4(int type, vec2 pos, float slice, int mipLevel, int samp
   }
   else    // if (type == RESTYPE_TEX3D)
   {
-    col = texelFetch(texUInt3D, ivec3(pos * texRes.xy, slice), mipLevel);
+    col = texelFetch(texUInt3D, ivec3(pos * texRes.xy, slice + 0.001f), mipLevel);
   }
 
   return col;
@@ -150,7 +150,7 @@ ivec4 SampleTextureSInt4(int type, vec2 pos, float slice, int mipLevel, int samp
   }
   else    // if (type == RESTYPE_TEX3D)
   {
-    col = texelFetch(texSInt3D, ivec3(pos * texRes.xy, slice), mipLevel);
+    col = texelFetch(texSInt3D, ivec3(pos * texRes.xy, slice + 0.001f), mipLevel);
   }
 
   return col;
@@ -258,7 +258,7 @@ vec4 SampleTextureFloat4(int type, vec2 pos, float slice, int mipLevel, int samp
   }
   else if(type == RESTYPE_TEX3D)
   {
-    col = textureLod(tex3D, vec3(pos, slice / texRes.z), float(mipLevel));
+    col = textureLod(tex3D, vec3(pos, (slice + 0.001f) / texRes.z), float(mipLevel));
   }
   else if(type == RESTYPE_TEXCUBE)
   {
diff --git a/renderdoc/data/glsl/vk_texsample.h b/renderdoc/data/glsl/vk_texsample.h
index 9b9532ee7..86fd5e764 100644
--- a/renderdoc/data/glsl/vk_texsample.h
+++ b/renderdoc/data/glsl/vk_texsample.h
@@ -44,7 +44,7 @@ vec4 SampleTextureFloat4(int type, vec2 pos, float slice, int mipLevel, int samp
   }
   else if(type == RESTYPE_TEX3D)
   {
-    col = textureLod(tex3D, vec3(pos, slice / texRes.z), float(mipLevel));
+    col = textureLod(tex3D, vec3(pos, (slice + 0.001f) / texRes.z), float(mipLevel));
   }
   else if(type == RESTYPE_TEX2DMS)
   {
@@ -96,7 +96,7 @@ uvec4 SampleTextureUInt4(int type, vec2 pos, float slice, int mipLevel, int samp
   }
   else if(type == RESTYPE_TEX3D)
   {
-    col = texelFetch(texUInt3D, ivec3(pos * texRes.xy, slice), mipLevel);
+    col = texelFetch(texUInt3D, ivec3(pos * texRes.xy, slice + 0.001f), mipLevel);
   }
   else if(type == RESTYPE_TEX2DMS)
   {
@@ -133,7 +133,7 @@ ivec4 SampleTextureSInt4(int type, vec2 pos, float slice, int mipLevel, int samp
   }
   else if(type == RESTYPE_TEX3D)
   {
-    col = texelFetch(texSInt3D, ivec3(pos * texRes.xy, slice), mipLevel);
+    col = texelFetch(texSInt3D, ivec3(pos * texRes.xy, slice + 0.001f), mipLevel);
   }
   else if(type == RESTYPE_TEX2DMS)
   {
diff --git a/renderdoc/data/hlsl/debugcommon.hlsl b/renderdoc/data/hlsl/debugcommon.hlsl
index 7fe446372..5877f67db 100644
--- a/renderdoc/data/hlsl/debugcommon.hlsl
+++ b/renderdoc/data/hlsl/debugcommon.hlsl
@@ -61,7 +61,7 @@ uint4 SampleTextureUInt4(uint type, float2 uv, float slice, float mip, int sampl
 	if(type == RESTYPE_TEX1D)
 		col = texDisplayUIntTex1DArray.Load(int3(uv.x*texRes.x, slice, mip));
 	else if(type == RESTYPE_TEX3D)
-		col = texDisplayUIntTex3D.Load(int4(uv.xy*texRes.xy, slice*texRes.z, mip));
+		col = texDisplayUIntTex3D.Load(int4(uv.xy*texRes.xy, slice + 0.001f, mip));
 	else if(type == RESTYPE_TEX2D)
 		col = texDisplayUIntTex2DArray.Load(int4(uv.xy*texRes.xy, slice, mip));
 	else if(type == RESTYPE_TEX2D_MS)
@@ -81,7 +81,7 @@ int4 SampleTextureInt4(uint type, float2 uv, float slice, float mip, int sample,
 	if(type == RESTYPE_TEX1D)
 		col = texDisplayIntTex1DArray.Load(int3(uv.x*texRes.x, slice, mip));
 	else if(type == RESTYPE_TEX3D)
-		col = texDisplayIntTex3D.Load(int4(uv.xy*texRes.xy, slice*texRes.z, mip));
+		col = texDisplayIntTex3D.Load(int4(uv.xy*texRes.xy, slice + 0.001f, mip));
 	else if(type == RESTYPE_TEX2D)
 		col = texDisplayIntTex2DArray.Load(int4(uv.xy*texRes.xy, slice, mip));
 	else if(type == RESTYPE_TEX2D_MS)
@@ -108,9 +108,9 @@ float4 SampleTextureFloat4(uint type, bool linearSample, float2 uv, float slice,
 	else if(type == RESTYPE_TEX3D)
 	{
 		if(linearSample)
-			col = texDisplayTex3D.SampleLevel(linearSampler, float3(uv.xy, slice), mip);
+			col = texDisplayTex3D.SampleLevel(linearSampler, float3(uv.xy, (slice + 0.001f) / texRes.z), mip);
 		else
-			col = texDisplayTex3D.Load(int4(uv.xy*texRes.xy, slice*texRes.z, mip));
+			col = texDisplayTex3D.Load(int4(uv.xy*texRes.xy, slice + 0.001f, mip));
 	}
 	else if(type == RESTYPE_DEPTH)
 	{
diff --git a/renderdoc/driver/d3d11/d3d11_debug.cpp b/renderdoc/driver/d3d11/d3d11_debug.cpp
index b990d4e5f..a660adf6d 100644
--- a/renderdoc/driver/d3d11/d3d11_debug.cpp
+++ b/renderdoc/driver/d3d11/d3d11_debug.cpp
@@ -1817,7 +1817,7 @@ bool D3D11DebugManager::GetHistogram(ResourceId texid, uint32_t sliceFace, uint3
   }
 
   if(details.texType == eTexType_3D)
-    cdata.HistogramSlice = float(sliceFace) / float(details.texDepth) + 0.001f;
+    cdata.HistogramSlice = float(sliceFace);
 
   ID3D11Buffer *cbuf = MakeCBuffer(&cdata, sizeof(cdata));
 
@@ -1918,7 +1918,7 @@ bool D3D11DebugManager::GetMinMax(ResourceId texid, uint32_t sliceFace, uint32_t
   }
 
   if(details.texType == eTexType_3D)
-    cdata.HistogramSlice = float(sliceFace) / float(details.texDepth) + 0.001f;
+    cdata.HistogramSlice = float(sliceFace);
 
   ID3D11Buffer *cbuf = MakeCBuffer(&cdata, sizeof(cdata));
 
@@ -3414,7 +3414,7 @@ bool D3D11DebugManager::RenderTexture(TextureDisplay cfg, bool blendAlpha)
   if(details.texType == eTexType_3D)
   {
     pixelData.OutputDisplayFormat = RESTYPE_TEX3D;
-    pixelData.Slice = (float(cfg.sliceFace) / float(details.texDepth)) + 0.001f;
+    pixelData.Slice = float(cfg.sliceFace);
   }
   else if(details.texType == eTexType_1D)
   {
diff --git a/renderdoc/driver/d3d12/d3d12_debug.cpp b/renderdoc/driver/d3d12/d3d12_debug.cpp
index 007b6fb10..fd9b1c909 100644
--- a/renderdoc/driver/d3d12/d3d12_debug.cpp
+++ b/renderdoc/driver/d3d12/d3d12_debug.cpp
@@ -7981,7 +7981,7 @@ bool D3D12DebugManager::RenderTextureInternal(D3D12_CPU_DESCRIPTOR_HANDLE rtv, T
   pixelData.Slice = float(RDCCLAMP(cfg.sliceFace, 0U, uint32_t(resourceDesc.DepthOrArraySize - 1)));
 
   if(resourceDesc.Dimension == D3D12_RESOURCE_DIMENSION_TEXTURE3D)
-    pixelData.Slice = (float(cfg.sliceFace) / float(resourceDesc.DepthOrArraySize)) + 0.001f;
+    pixelData.Slice = float(cfg.sliceFace);
 
   vector<D3D12_RESOURCE_BARRIER> barriers;
   int resType = 0;