Square light radius on cpu (should be done in code)

2021-09-01 21:02:18 +01:00
parent d0aeeed5c3
commit 02193add68
3 changed files with 9 additions and 7 deletions
@@ -6,7 +6,11 @@ in vec2 vTexPos;
 out vec4 fColor;
 void main()
 {
-    vec3 dField = ( texture(screenTexture,vTexPos).xyz - lightPos ) / lumRad.a;
-    vec3 c = pow (1 - min(1, dot(dField,dField)) , 2) * lumRad.rgb ;
+    vec3 distVec = texture(screenTexture,vTexPos).xyz - lightPos;
+    float dist = dot(distVec,distVec);
+    if (dist > lumRad.a) {discard;}
+    //vec3 dField =  distVec / lumRad.a;
+    //vec3 c = pow (1 - min(1, dot(dField,dField)) , 2) * lumRad.rgb ;
+    vec3 c = (1 - dist / lumRad.a) * lumRad.rgb ;
    fColor = vec4(c,0);
 }