Fixed HLSL shaders (mostly ray tracing related)

Updated HLSL compile script

shaders/hlsl/compile.py

@@ -43,7 +43,7 @@ for root, dirs, files in os.walk(dir_path):
             if(hlsl_file.find('.vert') != -1):
                 profile = 'vs_6_1'
             elif(hlsl_file.find('.frag') != -1):
-                profile = 'ps_6_1'
+                profile = 'ps_6_4'
             elif(hlsl_file.find('.comp') != -1):
                 profile = 'cs_6_1'
             elif(hlsl_file.find('.geom') != -1):
@@ -71,6 +71,8 @@ for root, dirs, files in os.walk(dir_path):
                 '-fspv-extension=SPV_KHR_multiview',
                 '-fspv-extension=SPV_KHR_shader_draw_parameters',
                 '-fspv-extension=SPV_EXT_descriptor_indexing',
+                '-fspv-extension=SPV_KHR_ray_query',
+                '-fspv-extension=SPV_KHR_fragment_shading_rate',
                 target,
                 hlsl_file,
                 '-Fo', spv_out])

shaders/hlsl/raytracingbasic/closesthit.rchit

@@ -1,8 +1,8 @@
 // Copyright 2020 Google LLC
 
-struct Attribute
+struct Attributes
 {
-  float2 attribs;
+  float2 bary;
 };
 
 struct Payload
@@ -11,8 +11,8 @@ struct Payload
 };
 
 [shader("closesthit")]
-void main(inout Payload p, in float2 attribs)
+void main(inout Payload p, in Attributes attribs)
 {
-  const float3 barycentricCoords = float3(1.0f - attribs.x - attribs.y, attribs.x, attribs.y);
+  const float3 barycentricCoords = float3(1.0f - attribs.bary.x - attribs.bary.y, attribs.bary.x, attribs.bary.y);
   p.hitValue = barycentricCoords;
 }

shaders/hlsl/raytracingcallable/closesthit.rchit

@@ -1,4 +1,4 @@
-// Copyright 2021 Sascha Willems
+// Copyright 2021-2023 Sascha Willems
 
 struct Payload
 {
@@ -10,8 +10,13 @@ struct CallData
     float3 outColor;
 };
 
+struct Attributes
+{
+  float2 bary;
+};
+
 [shader("closesthit")]
-void main(inout Payload p, in float2 attribs)
+void main(inout Payload p, in Attributes attribs)
 {
 	// Execute the callable shader indexed by the current geometry being hit
 	// For our sample this means that the first callable shader in the SBT is invoked for the first triangle, the second callable shader for the second triangle, etc.

shaders/hlsl/raytracingreflections/closesthit.rchit

@@ -8,6 +8,11 @@ struct RayPayload
 	float reflector;
 };
 
+struct Attributes
+{
+  float2 bary;
+};
+
 RaytracingAccelerationStructure topLevelAS : register(t0);
 struct UBO
 {
@@ -50,7 +55,7 @@ Vertex unpack(uint index)
 }
 
 [shader("closesthit")]
-void main(inout RayPayload rayPayload, in float2 attribs)
+void main(inout RayPayload rayPayload, in Attributes attribs)
 {
 	uint PrimitiveID = PrimitiveIndex();
 	int3 index = int3(indices[3 * PrimitiveID], indices[3 * PrimitiveID + 1], indices[3 * PrimitiveID + 2]);
@@ -60,7 +65,7 @@ void main(inout RayPayload rayPayload, in float2 attribs)
 	Vertex v2 = unpack(index.z);
 
 	// Interpolate normal
-	const float3 barycentricCoords = float3(1.0f - attribs.x - attribs.y, attribs.x, attribs.y);
+	const float3 barycentricCoords = float3(1.0f - attribs.bary.x - attribs.bary.y, attribs.bary.x, attribs.bary.y);
 	float3 normal = normalize(v0.normal * barycentricCoords.x + v1.normal * barycentricCoords.y + v2.normal * barycentricCoords.z);
 
 	// Basic lighting

shaders/hlsl/raytracingsbtdata/closesthit.rchit

@@ -1,8 +1,8 @@
 // Copyright 2020 Google LLC
 
-struct Attribute
+struct Attributes
 {
-  float2 attribs;
+  float2 bary;
 };
 
 struct Payload
@@ -19,7 +19,7 @@ struct SBT {
 ConstantBuffer<SBT> sbt;
 
 [shader("closesthit")]
-void main(inout Payload p, in float2 attribs)
+void main(inout Payload p, in Attributes attribs)
 {
   // Update the hit value to the hit record SBT data associated with this 
   // geometry ID and ray ID

shaders/hlsl/raytracingshadows/closesthit.rchit

@@ -1,13 +1,14 @@
 // Copyright 2020 Google LLC
 
-struct InPayload
+struct Payload
 {
 	[[vk::location(0)]] float3 hitValue;
+	[[vk::location(1)]] bool shadowed;
 };
 
-struct InOutPayload
+struct Attributes
 {
-	[[vk::location(2)]] bool shadowed;
+  float2 bary;
 };
 
 RaytracingAccelerationStructure topLevelAS : register(t0);
@@ -52,7 +53,7 @@ Vertex unpack(uint index)
 }
 
 [shader("closesthit")]
-void main(in InPayload inPayload, inout InOutPayload inOutPayload, in float2 attribs)
+void main(inout Payload payload, in Attributes attribs)
 {
 	uint PrimitiveID = PrimitiveIndex();
 	int3 index = int3(indices[3 * PrimitiveID], indices[3 * PrimitiveID + 1], indices[3 * PrimitiveID + 2]);
@@ -62,13 +63,13 @@ void main(in InPayload inPayload, inout InOutPayload inOutPayload, in float2 att
 	Vertex v2 = unpack(index.z);
 
 	// Interpolate normal
-	const float3 barycentricCoords = float3(1.0f - attribs.x - attribs.y, attribs.x, attribs.y);
+	const float3 barycentricCoords = float3(1.0f - attribs.bary.x - attribs.bary.y, attribs.bary.x, attribs.bary.y);
 	float3 normal = normalize(v0.normal * barycentricCoords.x + v1.normal * barycentricCoords.y + v2.normal * barycentricCoords.z);
 
 	// Basic lighting
 	float3 lightVector = normalize(ubo.lightPos.xyz);
 	float dot_product = max(dot(lightVector, normal), 0.2);
-	inPayload.hitValue = v0.color.rgb * dot_product;
+	payload.hitValue = v0.color.rgb * dot_product;
 
 	RayDesc rayDesc;
 	rayDesc.Origin = WorldRayOrigin() + WorldRayDirection() * RayTCurrent();
@@ -76,10 +77,10 @@ void main(in InPayload inPayload, inout InOutPayload inOutPayload, in float2 att
 	rayDesc.TMin = 0.001;
 	rayDesc.TMax = 100.0;
 
-	inOutPayload.shadowed = true;
+	payload.shadowed = true;
 	// Offset indices to match shadow hit/miss index
-	TraceRay(topLevelAS, RAY_FLAG_ACCEPT_FIRST_HIT_AND_END_SEARCH | RAY_FLAG_FORCE_OPAQUE | RAY_FLAG_SKIP_CLOSEST_HIT_SHADER, 0xff, 0, 0, 1, rayDesc, inOutPayload);
+	TraceRay(topLevelAS, RAY_FLAG_ACCEPT_FIRST_HIT_AND_END_SEARCH | RAY_FLAG_FORCE_OPAQUE | RAY_FLAG_SKIP_CLOSEST_HIT_SHADER, 0xff, 0, 0, 1, rayDesc, payload);
-	if (inOutPayload.shadowed) {
+	if (payload.shadowed) {
-		inPayload.hitValue *= 0.3;
+		payload.hitValue *= 0.3;
 	}
 }

shaders/hlsl/raytracingshadows/miss.rmiss

@@ -1,7 +1,13 @@
 // Copyright 2020 Google LLC
 
-[shader("miss")]
+struct Payload
-void main([[vk::location(0)]] in float3 hitValue)
 {
-    hitValue = float3(0.0, 0.0, 0.2);
+	[[vk::location(0)]] float3 hitValue;
+	[[vk::location(1)]] bool shadowed;
+};
+
+[shader("miss")]
+void main(inout Payload payload)
+{
+    payload.hitValue = float3(0.0, 0.0, 0.2);
 }

shaders/hlsl/raytracingshadows/shadow.rmiss

@@ -1,7 +1,13 @@
 // Copyright 2020 Google LLC
 
-[shader("miss")]
+struct Payload
-void main([[vk::location(2)]] in bool shadowed)
 {
-	shadowed = false;
+	[[vk::location(0)]] float3 hitValue;
+	[[vk::location(1)]] bool shadowed;
+};
+
+[shader("miss")]
+void main(inout Payload payload)
+{
+	payload.shadowed = false;
 }