Function computeViewNormal

TheForceEngine/Shaders/grid.h:16–21

Use the screenspace partial derivatives of the viewspace position to compute the normal.

// Use the screenspace partial derivatives of the viewspace position to compute the normal.
vec3 computeViewNormal(vec3 pos)
{
	vec3 dx = dFdx(pos);
	vec3 dy = dFdy(pos);
	return normalize(cross(dx, dy));
}

float computeViewFalloff(vec3 viewPos, vec3 viewUp)
{