path tracing crash fix when there are no instances

Author: turanszkij

WickedEngine/shaders/raytraceCS.hlsl

@@ -65,9 +65,18 @@ void main(uint3 DTid : SV_DispatchThreadID, uint groupIndex : SV_GroupIndex)
 		ray.Direction = normalize(ray.Direction);
 
 		float4 additive_dist = float4(0, 0, 0, FLT_MAX);
-
+		
 #ifdef RTAPI
 		wiRayQuery q;
+#else
+		RayHit hit;
+#endif // RTAPI
+
+		bool exit_sky = GetScene().instanceCount == 0;
+
+		if(!exit_sky)
+		{
+#ifdef RTAPI
 
 		uint flags = RAY_FLAG_SKIP_PROCEDURAL_PRIMITIVES;
 #ifdef RAY_BACKFACE_CULLING
@@ -115,13 +124,15 @@ void main(uint3 DTid : SV_DispatchThreadID, uint groupIndex : SV_GroupIndex)
 			result += max(0, energy * additive_dist.xyz);
 		}
 
-		if (q.CommittedStatus() != COMMITTED_TRIANGLE_HIT)
+		exit_sky = q.CommittedStatus() != COMMITTED_TRIANGLE_HIT;
 #else
-		RayHit hit = TraceRay_Closest(ray, xTraceUserData.y, rng, groupIndex);
+		hit = TraceRay_Closest(ray, xTraceUserData.y, rng, groupIndex);
 
-		if (hit.distance >= FLT_MAX - 1)
+		exit_sky = hit.distance >= FLT_MAX - 1;
 #endif // RTAPI
+		}
 
+		if (exit_sky)
 		{
 			float3 envColor;
 			[branch]

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 = 583;
+	const int revision = 584;
 
 	const std::string version_string = std::to_string(major) + "." + std::to_string(minor) + "." + std::to_string(revision);
 
@@ -50,7 +50,7 @@ All contributors: https://github.com/turanszkij/WickedEngine/graphs/contributors
 
 Patreon supporters
 ---------------------------
-Nemerle, James Webb, Quifeng Jin, TheGameCreators, Joseph Goldin, Yuri, Sergey K, Yukawa Kanta, Dragon Josh, John, LurkingNinja, Bernardo Del Castillo, Invictus, Scott Hunt, Yazan Altaki, Tuan NV, Robert MacGregor, cybernescence, Alexander Dahlin, blueapples, Delhills, NI NI, Sherief, ktopoet, Justin Macklin, Cédric Fabre, TogetherTeam, Bartosz Boczula, Arne Koenig, Ivan Trajchev, nathants, Fahd Ahmed, Gabriel Jadderson, SAS_Controller, Dominik Madarász, Segfault, Mike amanfo, Dennis Brakhane, rookie, Peter Moore, therealjtgill, Nicolas Embleton, Desuuc, radino1977, Anthony Curtis, manni heck, Matthias Hölzl, Phyffer, Lucas Pinheiro, Tapkaara, gpman, Anthony Python, Gnowos, Klaus, slaughternaut, Paul Brain, Connor Greaves, Alexandr, Lee Bamber, MCAlarm MC2, Titoutan, Willow, Aldo, lokimx, K. Osterman, Nomad, ykl, Alex Krokos, Timmy, Avaflow, mat, Hexegonel Samael Michael, Joe Spataro, soru, GeniokV, Mammoth, Ignacio, datae, Jason Rice, MarsBEKET, Tim, Twisty, Zelf ieats kiezen, Romildo Franco, zNachoh, Dmitriy, Alex Minerva, Stefan Kent, Natty, Sunny Krishna
+Nemerle, James Webb, Quifeng Jin, TheGameCreators, Joseph Goldin, Yuri, Sergey K, Yukawa Kanta, Dragon Josh, John, LurkingNinja, Bernardo Del Castillo, Invictus, Scott Hunt, Yazan Altaki, Tuan NV, Robert MacGregor, cybernescence, Alexander Dahlin, blueapples, Delhills, NI NI, Sherief, ktopoet, Justin Macklin, Cédric Fabre, TogetherTeam, Bartosz Boczula, Arne Koenig, Ivan Trajchev, nathants, Fahd Ahmed, Gabriel Jadderson, SAS_Controller, Dominik Madarász, Segfault, Mike amanfo, Dennis Brakhane, rookie, Peter Moore, therealjtgill, Nicolas Embleton, Desuuc, radino1977, Anthony Curtis, manni heck, Matthias Hölzl, Phyffer, Lucas Pinheiro, Tapkaara, gpman, Anthony Python, Gnowos, Klaus, slaughternaut, Paul Brain, Connor Greaves, Alexandr, Lee Bamber, MCAlarm MC2, Titoutan, Willow, Aldo, lokimx, K. Osterman, Nomad, ykl, Alex Krokos, Timmy, Avaflow, mat, Hexegonel Samael Michael, Joe Spataro, soru, GeniokV, Mammoth, Ignacio, datae, Jason Rice, MarsBEKET, Tim, Twisty, Zelf ieats kiezen, Romildo Franco, zNachoh, Dmitriy, Alex Minerva, Stefan Kent, Natty, Sunny Krishna, Vilmos Malárik, Ferrata
 		)";
 
 		return credits;