begin sketching out harnack tracer

1 files changed, 34 insertions, 1 deletions

diff --git a/2ner.cginc b/2ner.cginc
index 548ec87..1382903 100644
--- a/2ner.cginc
+++ b/2ner.cginc
@@ -8,6 +8,7 @@
 #include "face_me.cginc"

 #include "features.cginc"

 #include "globals.cginc"

+#include "harnack_tracing.cginc"

 #include "interpolators.cginc"

 #include "matcaps.cginc"

 #include "poi.cginc"

@@ -141,7 +142,11 @@ v2f vert(appdata v) {
   return o;

 }

 

-float4 frag(v2f i) : SV_Target {

+float4 frag(v2f i

+#if defined(_HARNACK_TRACING)

+  , out float depth : SV_DepthLessEqual

+#endif

+) : SV_Target {

   UNITY_APPLY_DITHER_CROSSFADE(i.pos.xy);

   UNITY_SETUP_INSTANCE_ID(i);

   UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(i);

@@ -156,6 +161,15 @@ float4 frag(v2f i) : SV_Target {
 

   YumPbr pbr = GetYumPbr(i);

 

+#if defined(_HARNACK_TRACING)

+  HarnackTracingOutput harnack_output = HarnackTracing(i);

+  pbr.albedo = float4(1, 1, 1, 0.2);

+  pbr.smoothness = 0.95;

+  pbr.roughness_perceptual = 0.05;

+  pbr.roughness = pbr.roughness_perceptual * pbr.roughness_perceptual;

+  pbr.metallic = 0;

+#endif

+

 #if defined(_SSFD)

   float ssfd_mask = ssfd(i.uv01.xy, _SSFD_Scale, _SSFD_Max_Fwidth, 0, _SSFD_Noise);

   pbr.albedo *= (ssfd_mask > _SSFD_Threshold);

@@ -194,6 +208,25 @@ float4 frag(v2f i) : SV_Target {
 

   float4 lit = YumBRDF(i, l, pbr);

 

+#if defined(_HARNACK_TRACING)

+  pbr.albedo = harnack_output.color;

+  pbr.smoothness = 0;

+  pbr.roughness = 1;

+  pbr.roughness_perceptual = 1;

+  pbr.metallic = 0;

+  pbr.normal = harnack_output.normal;

+  l.NoL = saturate(dot(pbr.normal, l.dir));

+  l.NoL_wrapped_s = l.NoL;

+  l.NoL_wrapped_d = l.NoL;

+  float4 harnack_lit = YumBRDF(i, l, pbr);

+  //lit = alphaBlend(harnack_lit, lit);

+  lit = harnack_lit;

+  {

+    float4 clip_pos = mul(UNITY_MATRIX_VP, float4(harnack_output.worldPos, 1.0));

+    depth = clip_pos.z / clip_pos.w;

+  }

+#endif

+

 #if defined(_EMISSION) || (defined(_GLITTER) && defined(FORWARD_BASE_PASS))

   lit.rgb += pbr.emission;

 #endif