shader fixes: some uvs were not using pixel center

WickedEngine/shaders/emittedparticlePS_soft.hlsl

@@ -37,7 +37,7 @@ float4 main(VertextoPixel input) : SV_TARGET
 		}
 	}
 
-	uint2 pixel = input.pos.xy;
+	uint2 pixel = input.pos.xy; // no longer pixel center!
 
 	float4 inputColor;
 	inputColor.r = ((input.color >> 0)  & 0xFF) / 255.0f;
@@ -50,7 +50,7 @@ float4 main(VertextoPixel input) : SV_TARGET
 	[branch]
 	if (GetCamera().texture_lineardepth_index >= 0)
 	{
-		float2 ScreenCoord = pixel * GetCamera().internal_resolution_rcp;
+		float2 ScreenCoord = input.pos.xy * GetCamera().internal_resolution_rcp; // use pixel center!
 		float4 depthScene = texture_lineardepth.GatherRed(sampler_linear_clamp, ScreenCoord) * GetCamera().z_far;
 		float depthFragment = input.pos.w;
 		opacity *= saturate(1.0 / input.size * (max(max(depthScene.x, depthScene.y), max(depthScene.z, depthScene.w)) - depthFragment));

WickedEngine/shaders/hairparticlePS.hlsl

@@ -24,8 +24,8 @@ float4 main(VertexToPixel input) : SV_Target
 	V /= dist;
 	float emissive = 0;
 
-	const uint2 pixel = input.pos.xy;
-	const float2 ScreenCoord = pixel * GetCamera().internal_resolution_rcp;
+	const uint2 pixel = input.pos.xy; // no longer pixel center!
+	const float2 ScreenCoord = input.pos.xy * GetCamera().internal_resolution_rcp; // use pixel center!
 
 	Surface surface;
 	surface.init();

WickedEngine/shaders/impostorPS.hlsl

@@ -23,8 +23,8 @@ float4 main(VSOut input) : SV_Target
 	float dist = length(V);
 	V /= dist;
 
-	const uint2 pixel = input.pos.xy;
-	const float2 ScreenCoord = pixel * GetCamera().internal_resolution_rcp;
+	const uint2 pixel = input.pos.xy; // no longer pixel center!
+	const float2 ScreenCoord = input.pos.xy * GetCamera().internal_resolution_rcp; // use pixel center!
 
 	Surface surface;
 	surface.init();

WickedEngine/shaders/objectHF.hlsli

@@ -422,8 +422,8 @@ float4 main(PixelInput input, in bool is_frontface : SV_IsFrontFace) : SV_Target
 {
 	const float depth = input.pos.z;
 	const float lineardepth = input.pos.w;
-	const uint2 pixel = input.pos.xy;
-	const float2 ScreenCoord = pixel * GetCamera().internal_resolution_rcp;
+	const uint2 pixel = input.pos.xy; // no longer pixel center!
+	const float2 ScreenCoord = input.pos.xy * GetCamera().internal_resolution_rcp; // use pixel center!
 
 #ifdef OBJECTSHADER_USE_UVSETS
 	float4 uvsets = input.GetUVSets();

WickedEngine/shaders/rtdiffuseCS.hlsl

@@ -146,7 +146,7 @@ void main(uint2 DTid : SV_DispatchThreadID)
 				return;
 
 			surface.pixel = DTid.xy;
-			surface.screenUV = surface.pixel * postprocess.resolution_rcp.xy;
+			surface.screenUV = (surface.pixel + 0.5) * postprocess.resolution_rcp.xy;
 
 			if (surface.material.IsUnlit())
 			{

WickedEngine/shaders/rtreflectionCS.hlsl

@@ -146,7 +146,7 @@ void main(uint2 DTid : SV_DispatchThreadID)
 			return;
 
 		surface.pixel = DTid.xy;
-		surface.screenUV = surface.pixel * postprocess.resolution_rcp.xy;
+		surface.screenUV = (surface.pixel + 0.5) * postprocess.resolution_rcp.xy;
 
 		if (surface.material.IsUnlit())
 		{

WickedEngine/shaders/rtreflectionLIB.hlsl

@@ -104,7 +104,7 @@ void RTReflection_ClosestHit(inout RayPayload payload, in BuiltInTriangleInterse
 		return;
 
 	surface.pixel = DispatchRaysIndex().xy;
-	surface.screenUV = surface.pixel / (float2)DispatchRaysDimensions().xy;
+	surface.screenUV = (surface.pixel + 0.5) / (float2)DispatchRaysDimensions().xy;
 
 	if (surface.material.IsUnlit())
 	{

WickedEngine/wiVersion.cpp

@@ -9,7 +9,7 @@ namespace wi::version
 	// minor features, major updates, breaking compatibility changes
 	const int minor = 71;
 	// minor bug fixes, alterations, refactors, updates
-	const int revision = 360;
+	const int revision = 361;
 
 	const std::string version_string = std::to_string(major) + "." + std::to_string(minor) + "." + std::to_string(revision);