Remove individual uniforms from instancing light maps

shader/shadow/light.frag

@@ -4,8 +4,9 @@ layout (std140, binding = 1) uniform LightsBlock
     vec4 posBool[20];
     vec4 colRad[20];
 } ;
-uniform vec3 lightPos;
-uniform vec4 lumRad;
+uniform int lightID;
+vec3 lightPos = posBool[lightID].xyz;
+vec4 lumRad = colRad[lightID];
 uniform sampler2D screenTexture;
 in vec2 vTexPos;
 out vec4 fColor;