The following shows an excerpt of the code for a vertex lighting shader. What do...
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The following shows an excerpt of the code for a vertex lighting shader. What does the code with red colour calculate?
vec3 pos = -(uModelViewMatrix * aPosition).xyz;vec3 light = uLightPosition.xyz;vec3 L = normalize( light - pos ); vec3 E = normalize( -pos ); vec3 H = normalize( L + E );
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