Merge pull request #237 from Ekzuzy/multithreading

Added missing usages in buffers used as a source of data copy.

data/shaders/multithreading/starsphere.frag

@@ -14,11 +14,11 @@ layout (location = 0) out vec4 outFragColor;
 float hash33(vec3 p3)
 {
 	p3 = fract(p3 * HASHSCALE3);
-    p3 += dot(p3, p3.yxz+19.19);
-    return fract(vec3((p3.x + p3.y)*p3.z + (p3.x+p3.z)*p3.y + (p3.y+p3.z)*p3.x));
+    p3 += dot(p3, p3.yxz+vec3(19.19));
+    return fract((p3.x + p3.y)*p3.z + (p3.x+p3.z)*p3.y + (p3.y+p3.z)*p3.x);
 }
 
-float starField(vec3 pos)
+vec3 starField(vec3 pos)
 {
 	vec3 color = vec3(0.0);
     float threshhold = (1.0 - STARFREQUENCY);