Faster raytracing

Shaders/raytrace/src/raytrace_bake_ao.hlsl

@@ -3,9 +3,10 @@
 #include "std/math.hlsl"
 
 struct Vertex {
-	float3 position;
-	float3 normal;
-	float2 tex;
+	uint posxy;
+	uint poszw;
+	uint nor;
+	uint tex;
 };
 
 struct RayGenConstantBuffer {

Shaders/raytrace/src/raytrace_bake_bent.hlsl

@@ -3,9 +3,10 @@
 #include "std/math.hlsl"
 
 struct Vertex {
-	float3 position;
-	float3 normal;
-	float2 tex;
+	uint posxy;
+	uint poszw;
+	uint nor;
+	uint tex;
 };
 
 struct RayGenConstantBuffer {

Shaders/raytrace/src/raytrace_bake_light.hlsl

@@ -4,9 +4,10 @@
 #include "std/attrib.hlsl"
 
 struct Vertex {
-	float3 position;
-	float3 normal;
-	float2 tex;
+	uint posxy;
+	uint poszw;
+	uint nor;
+	uint tex;
 };
 
 struct RayGenConstantBuffer {
@@ -91,16 +92,16 @@ void closesthit(inout RayPayload payload, in BuiltInTriangleIntersectionAttribut
 	uint3 indices_sample = indices.Load3(base_index);
 
 	float3 vertex_normals[3] = {
-		float3(vertices[indices_sample[0]].normal),
-		float3(vertices[indices_sample[1]].normal),
-		float3(vertices[indices_sample[2]].normal)
+		float3(S16toF32(vertices[indices_sample[0]].nor), S16toF32(vertices[indices_sample[0]].poszw).y),
+		float3(S16toF32(vertices[indices_sample[1]].nor), S16toF32(vertices[indices_sample[1]].poszw).y),
+		float3(S16toF32(vertices[indices_sample[2]].nor), S16toF32(vertices[indices_sample[2]].poszw).y)
 	};
 	float3 n = normalize(hit_attribute(vertex_normals, attr));
 
 	float2 vertex_uvs[3] = {
-		float2(vertices[indices_sample[0]].tex),
-		float2(vertices[indices_sample[1]].tex),
-		float2(vertices[indices_sample[2]].tex)
+		S16toF32(vertices[indices_sample[0]].tex),
+		S16toF32(vertices[indices_sample[1]].tex),
+		S16toF32(vertices[indices_sample[2]].tex)
 	};
 	float2 tex_coord = hit_attribute2d(vertex_uvs, attr);
 

Shaders/raytrace/src/raytrace_bake_thick.hlsl

@@ -3,9 +3,10 @@
 #include "std/math.hlsl"
 
 struct Vertex {
-	float3 position;
-	float3 normal;
-	float2 tex;
+	uint posxy;
+	uint poszw;
+	uint nor;
+	uint tex;
 };
 
 struct RayGenConstantBuffer {

Shaders/raytrace/src/raytrace_brute.hlsl

@@ -4,9 +4,10 @@
 #include "std/math.hlsl"
 
 struct Vertex {
-	float3 position;
-	float3 normal;
-	float2 tex;
+	uint posxy;
+	uint poszw;
+	uint nor;
+	uint tex;
 };
 
 struct RayGenConstantBuffer {
@@ -122,9 +123,9 @@ void closesthit(inout RayPayload payload, in BuiltInTriangleIntersectionAttribut
 	uint3 indices_sample = indices.Load3(base_index);
 
 	float2 vertex_uvs[3] = {
-		float2(vertices[indices_sample[0]].tex),
-		float2(vertices[indices_sample[1]].tex),
-		float2(vertices[indices_sample[2]].tex)
+		S16toF32(vertices[indices_sample[0]].tex),
+		S16toF32(vertices[indices_sample[1]].tex),
+		S16toF32(vertices[indices_sample[2]].tex)
 	};
 	float2 tex_coord = hit_attribute2d(vertex_uvs, attr);
 
@@ -140,9 +141,9 @@ void closesthit(inout RayPayload payload, in BuiltInTriangleIntersectionAttribut
 	}
 
 	float3 vertex_normals[3] = {
-		float3(vertices[indices_sample[0]].normal),
-		float3(vertices[indices_sample[1]].normal),
-		float3(vertices[indices_sample[2]].normal)
+		float3(S16toF32(vertices[indices_sample[0]].nor), S16toF32(vertices[indices_sample[0]].poszw).y),
+		float3(S16toF32(vertices[indices_sample[1]].nor), S16toF32(vertices[indices_sample[1]].poszw).y),
+		float3(S16toF32(vertices[indices_sample[2]].nor), S16toF32(vertices[indices_sample[2]].poszw).y)
 	};
 	float3 n = normalize(hit_attribute(vertex_normals, attr));
 

Shaders/raytrace/src/std/attrib.hlsl

@@ -2,6 +2,12 @@
 #ifndef _ATTRIB_HLSL_
 #define _ATTRIB_HLSL_
 
+float2 S16toF32(uint val) {
+	int a = (int)(val << 16) >> 16;
+	int b = (int)(val & 0xffff0000) >> 16;
+	return float2(a, b) / 32767.0f;
+}
+
 float3 hit_world_position() {
 	return WorldRayOrigin() + RayTCurrent() * WorldRayDirection();
 }