Some ray tracing changes

res/shaders/raytracing/RayGen.slang

@@ -0,0 +1,36 @@
+import Common;
+import RayTracingData;
+
+[shader("raygeneration")]
+void main()
+{
+	const float2 pixelCenter = float2(DispatchRaysIndex().xy) + float2(0.5);
+	const float2 inUV = pixelCenter / float2(DispatchRaysDimensions().xy);
+	float2 d = inUV * 2.0 - 1.0;
+
+	float4 origin = mul(pViewParams.inverseViewMatrix, float4(0, 0, 0, 1));
+	float4 target = mul(pViewParams.inverseProjection, float4(d.x, d.y, 1, 1));
+	float4 direction = mul(pViewParams.inverseViewMatrix, float4(normalize(target.xyz), 0));
+
+	float tmin = 0.0001;
+	float tmax = 10000.0;
+
+	uint max_rays = 24;
+
+    uint object_type = 100;
+    float4 color = float4(0, 0, 0, 0);
+    uint current_mode = 0;
+    float expectedDistance = -1;
+    Payload payload;
+
+    RayDesc desc = {
+        origin.xyz,
+        tmin,
+        direction.xyz,
+        tmax,
+    };
+
+    TraceRay(pRayTracingParams.scene, RAY_FLAG_FORCE_OPAQUE, 0xff, 0, 0, 0, desc, payload);
+
+    pRayTracingParams.image[DispatchRaysIndex().xy] = payload.color;
+}