Triplanar Mapping shader for Marmoset Toolbag 4

triplanar.frag

#include "data/shader/mat/state.frag"

uniform float uScale;  //name "Scale"  default 1.0   min 0.0  max 5.0
USE_TEXTURE2D(tTexture0);

void TriplanarEmissive( inout FragmentState s )
{
	vec3 uvw = fract(s.vertexPosition / 100.0 * uScale);

	vec3 blend = abs(s.normal);
	blend /= dot(blend, vec3(1.0, 1.0, 1.0));

	vec4 cx0 = texture2D(tTexture0, uvw.yz);
	vec4 cy0 = texture2D(tTexture0, uvw.xz);
	vec4 cz0 = texture2D(tTexture0, uvw.xy);
	float4 color0 = cx0 * blend.x + cy0 * blend.y + cz0 * blend.z;

	// Display the UV coordinates
	//s.emissiveLight = uvw;

	// Display the texture
	s.emissiveLight = color0.xyz;
}

#ifdef Emissive
	#undef Emissive
#endif
#define Emissive TriplanarEmissive