Fix area lighting

yozhijk · yozhijk · commit 3e61af91e531 · 2017-02-21T16:43:56.000+01:00
diff --git a/App/CL/integrator_pt.cl b/App/CL/integrator_pt.cl
@@ -457,7 +457,7 @@ __kernel void ShadeSurface(
         if (NON_BLACK(radiance))
         {
             // Generate shadow ray
-            float shadow_ray_length = (1.f - 2.f * CRAZY_LOW_DISTANCE) * length(wo);
+            float shadow_ray_length = 0.999f * (1.f - CRAZY_LOW_DISTANCE) * length(wo);
             float3 shadow_ray_dir = normalize(wo);
             float3 shadow_ray_o = diffgeo.p + CRAZY_LOW_DISTANCE * s * diffgeo.n;
             int shadow_ray_mask = Bxdf_IsSingular(&diffgeo) ? 0xFFFFFFFF : 0x0000FFFF;

Original file line number	Diff line number	Diff line change
`@@ -457,7 +457,7 @@ __kernel void ShadeSurface(`
`457`	`457`	`if (NON_BLACK(radiance))`
`458`	`458`	`{`
`459`	`459`	`// Generate shadow ray`
`460`		`- float shadow_ray_length = (1.f - 2.f * CRAZY_LOW_DISTANCE) * length(wo);`
	`460`	`+ float shadow_ray_length = 0.999f * (1.f - CRAZY_LOW_DISTANCE) * length(wo);`
`461`	`461`	`float3 shadow_ray_dir = normalize(wo);`
`462`	`462`	`float3 shadow_ray_o = diffgeo.p + CRAZY_LOW_DISTANCE * s * diffgeo.n;`
`463`	`463`	`int shadow_ray_mask = Bxdf_IsSingular(&diffgeo) ? 0xFFFFFFFF : 0x0000FFFF;`