Misaki/com.misaki.hdrp-toon
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 6 Wiki Activity

Shader code cleanupand bug fix.

Browse Source
This commit is contained in:
Misaki
2025-02-17 22:15:27 +09:00
parent eacbbc9b8b
commit 4ce84572d0
20 changed files with 375 additions and 467 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
Runtime/Shaders/Includes/Lighting/UtsShadowEvaluation.hlsl
View File

@@ -12,6 +12,7 @@ float3 UtsGetShadowNormal(UtsBSDFData bsdfData)
float3 SampleSDFTexture(float3 L, float2 uv, out float angle)
{
// TODO: Move sdf sample result to UtsBSDFData to avoid sampleing in a loop
float2 right_uv = float2(1 - uv.x, uv.y);
float3 left_SDFTex = SAMPLE_TEXTURE2D(_SDFShadingMap, sampler_SDFShadingMap, uv).rgb;
float3 right_SDFTex = SAMPLE_TEXTURE2D(_SDFShadingMap, sampler_SDFShadingMap, right_uv).rgb;
@@ -35,23 +36,19 @@ float GetHairShadow(PositionInputs posInput, float3 L)
if (hairShadowOpacity > 0.0)
{
float3 viewLightDir = TransformWorldToViewDir(L); // / posInput.deviceDepth; when linearDepth grows large, the movement amount should be lower since we are getting further from the face.
float3 cameraDirOS = normalize(TransformWorldToObject(GetCameraPositionWS()));
float3 viewLightDir = TransformWorldToViewDir(L);
float shadowLengthY = _HairShadowDistance * 5.0 * max(0.5, posInput.linearDepth * _HairShadowDistanceScaleFactor) / posInput.linearDepth;
float2 shadowLength = float2(shadowLengthY * 2.0f, shadowLengthY);
float3 camDirOS = normalize(TransformWorldToObject(GetCameraPositionWS()));
float camDirFactor = 1 - smoothstep(0.1, 0.9, camDirOS.y);
shadowLength.y *= camDirFactor;
float3 cameraDirOS = normalize(TransformWorldToObject(GetCameraPositionWS()));
float cameraDirFactor = 1 - smoothstep(0.1, 0.9, cameraDirOS.y);
shadowLength.y *= cameraDirFactor;
float2 samplingPoint = (posInput.positionSS + shadowLength * viewLightDir.xy * (_ScreenSize.xy / float2(1920.0f, 1080.0f))) * _ScreenSize.zw; // Use 1080p as the reference resolution to achieve consistent shadow lengths across various screen resolutions.
// Then sample the hair buffer, to see if the fragment lands in shadow.
float2 scaledUVs = samplingPoint * _HairShadowRTHandleScale.xy; // We have to including the scaling factor for our shadow map since we are not going to allocate new texture if the rendering resolution changed.
float hairDepth = SAMPLE_TEXTURE2D(_HairShadowTex, s_linear_clamp_sampler, scaledUVs).r;
float shadowMask = posInput.deviceDepth <= hairDepth + _HairShadowDepthBias ? 1 : 0; // Hair < Face means Hair are closer to camera
// Note that we have LinearEyeDepth in the buffer. A comparison of depth is needed so that we don't project the shadow of hair behind the face.
shadow = lerp(1, 1.0 - hairShadowOpacity, shadowMask);
float hairShadow = SAMPLE_TEXTURE2D_SHADOW(_HairShadowTex, s_linear_clamp_compare_sampler, float3(scaledUVs, posInput.deviceDepth + _HairShadowDepthBias)).r;
shadow = lerp(1.0 - hairShadowOpacity, 1.0, hairShadow);
}
return shadow;