Properly calling trace function with payload1

ray_tracing_anyhit/shaders/raycommon.glsl

@@ -3,3 +3,9 @@ struct hitPayload
   vec3 hitValue;
   uint seed;
 };
+
+struct shadowPayload
+{
+  bool isHit;
+  uint seed;
+};

ray_tracing_anyhit/shaders/raytrace.rchit

@@ -10,7 +10,7 @@ hitAttributeEXT vec2 attribs;
 
 // clang-format off
 layout(location = 0) rayPayloadInEXT hitPayload prd;
-layout(location = 1) rayPayloadEXT bool isShadowed;
+layout(location = 1) rayPayloadEXT shadowPayload prdShadow;
 
 layout(binding = 0, set = 0) uniform accelerationStructureEXT topLevelAS;
 
@@ -104,7 +104,8 @@ void main()
     vec3  origin = gl_WorldRayOriginEXT + gl_WorldRayDirectionEXT * gl_HitTEXT;
     vec3  rayDir = L;
     uint  flags  = gl_RayFlagsSkipClosestHitShaderEXT;
-    isShadowed   = true;
+    prdShadow.isHit = true;
+    prdShadow.seed  = prd.seed;
     traceRayEXT(topLevelAS,  // acceleration structure
                 flags,       // rayFlags
                 0xFF,        // cullMask
@@ -117,8 +118,9 @@ void main()
                 tMax,        // ray max range
                 1            // payload (location = 1)
     );
+    prd.seed = prdShadow.seed;
 
-    if(isShadowed)
+    if(prdShadow.isHit)
     {
       attenuation = 0.3;
     }

ray_tracing_anyhit/shaders/raytraceShadow.rmiss

@@ -1,9 +1,11 @@
 #version 460
 #extension GL_EXT_ray_tracing : require
+#extension GL_GOOGLE_include_directive : enable
+#include "raycommon.glsl"
 
-layout(location = 1) rayPayloadInEXT bool isShadowed;
+layout(location = 1) rayPayloadInEXT shadowPayload prd;
 
 void main()
 {
-  isShadowed = false;
+  prd.isHit = false;
 }

ray_tracing_anyhit/shaders/raytrace_0.rahit

@@ -0,0 +1,5 @@
+#version 460
+#extension GL_GOOGLE_include_directive : enable
+
+#define PAYLOAD_0
+#include "raytrace_rahit.glsl"

ray_tracing_anyhit/shaders/raytrace_1.rahit

@@ -0,0 +1,5 @@
+#version 460
+#extension GL_GOOGLE_include_directive : enable
+
+#define PAYLOAD_1
+#include "raytrace_rahit.glsl"

ray_tracing_anyhit/shaders/raytrace_rahit.glsl

@@ -0,0 +1,45 @@
+//#version 460
+#extension GL_EXT_ray_tracing : require
+#extension GL_EXT_nonuniform_qualifier : enable
+#extension GL_EXT_scalar_block_layout : enable
+//#extension GL_GOOGLE_include_directive : enable
+
+#include "random.glsl"
+#include "raycommon.glsl"
+#include "wavefront.glsl"
+
+// clang-format off
+#ifdef PAYLOAD_0
+layout(location = 0) rayPayloadInEXT hitPayload prd;
+#elif defined(PAYLOAD_1)
+layout(location = 1) rayPayloadInEXT shadowPayload prd;
+#endif
+
+layout(binding = 2, set = 1, scalar) buffer ScnDesc { sceneDesc i[]; } scnDesc;
+layout(binding = 4, set = 1)  buffer MatIndexColorBuffer { int i[]; } matIndex[];
+layout(binding = 5, set = 1, scalar) buffer Vertices { Vertex v[]; } vertices[];
+layout(binding = 6, set = 1) buffer Indices { uint i[]; } indices[];
+layout(binding = 1, set = 1, scalar) buffer MatColorBufferObject { WaveFrontMaterial m[]; } materials[];
+// clang-format on
+
+void main()
+{
+  // Object of this instance
+  uint objId = scnDesc.i[gl_InstanceID].objId;
+  // Indices of the triangle
+  uint ind = indices[nonuniformEXT(objId)].i[3 * gl_PrimitiveID + 0];
+  // Vertex of the triangle
+  Vertex v0 = vertices[nonuniformEXT(objId)].v[ind.x];
+
+  // Material of the object
+  int               matIdx = matIndex[nonuniformEXT(objId)].i[gl_PrimitiveID];
+  WaveFrontMaterial mat    = materials[nonuniformEXT(objId)].m[matIdx];
+
+  if(mat.illum != 4)
+    return;
+
+  if(mat.dissolve == 0.0)
+    ignoreIntersectionEXT();
+  else if(rnd(prd.seed) > mat.dissolve)
+    ignoreIntersectionEXT();
+}