it works??

src/game/shaders/frag.sc

@@ -1,5 +1,8 @@
 $input v_color0
 $input v_uv0
+$input v_wpos
+
+uniform vec4 u_time;
 
 #include "common.sh"
 
@@ -13,7 +16,12 @@ float circle(vec2 uv, float radius)
 	return clamp(1.0 - result, 0.0, 1.0);
 }
 
-float circles(vec2 uv, float level, float subLevel)
+float calcBrightness(vec3 lightPos, vec3 vertPos)
+{
+	return clamp(1.0 - distance(lightPos, vertPos) * 0.01, 0.0, 1.0);
+}
+
+float circles(vec2 uv, float level, float subLevel, float brightness)
 {
 	vec2 offsetUv = uv + 0.5;
 	vec2 baseUv = (offsetUv % 1.0) - 0.5;
@@ -27,20 +35,22 @@ float circles(vec2 uv, float level, float subLevel)
 	float step3 = clamp(step - 2, 0.0, 1.0);
 	
 	float sum = 0.0;
-	// sum += circle(baseUv, lerp(0.5, 0.25, subLevel));
-	// sum += circle(step1Uv, 0.25 * step1);
-	// sum += circle(step2Uv, 0.25 * step2);
-	// sum += circle(step3Uv, 0.25 * step3);
-	sum = circle(baseUv, lerp(0.5, 0.25, subLevel));
-	sum = max(sum, circle(step1Uv, 0.25 * step1));
-	sum = max(sum, circle(step2Uv, 0.25 * step2));
-	sum = max(sum, circle(step3Uv, 0.25 * step3));
+	sum = circle(baseUv, lerp(0.5, 0.25, subLevel) * brightness);
+	sum = max(sum, circle(step1Uv, 0.25 * step1 * brightness));
+	sum = max(sum, circle(step2Uv, 0.25 * step2 * brightness));
+	sum = max(sum, circle(step3Uv, 0.25 * step3 * brightness));
 
 	return min(sum, 1.0);
 }
 
 void main()
 {
+	float testRadius = 50.0;
+	float testSpeed = 1.0;
+	vec3 testOffset = vec3(0.0, 0.0, 50.0);
+	float brightness = calcBrightness(testOffset + vec3(sin(u_time.x * testSpeed) * testRadius, 0.0, cos(u_time.x * testSpeed) * testRadius), v_wpos);
+	brightness = 0.2 + brightness * 0.8;
+	
 	float baseScale = 10.0;
 	float2 dx = ddx(v_uv0 * baseScale);
 	float2 dy = ddy(v_uv0 * baseScale);
@@ -53,12 +63,12 @@ void main()
 	float2 freq = sqrt(float2(qq + discriminant, qq - discriminant) / 2.0);
 
 	float spacing = freq.y * exp2(2.0);
-	spacing = 1.0 / spacing;
-	spacing *= 1.0; // TODO: check reference to see how to calculate this!
+	spacing = 4.0 / spacing;
+	spacing *= brightness; // TODO: check reference to see how to calculate this!
 	float spacingLog = max(log2(spacing), 1.0);
 	int patternScaleLevel = floor(spacingLog);
 	float patternFractional = spacingLog - patternScaleLevel;
 	
 	vec2 uv = v_uv0 * exp2(patternScaleLevel);
-	gl_FragColor = circles(uv, patternScaleLevel, patternFractional);
+	gl_FragColor = circles(uv, patternScaleLevel, patternFractional, brightness);
 }

src/game/shaders/varying.def.sc

@@ -1,5 +1,6 @@
 vec4 v_color0    : COLOR0    = vec4(1.0, 1.0, 0.0, 1.0);
 vec2 v_uv0       : TEXCOORD0 = vec2(0.0, 0.0);
+vec3 v_wpos      : TEXCOORD1 = vec3(0.0, 0.0, 0.0);
 
 vec3 a_position  : POSITION;
 vec4 a_color0    : COLOR0;

src/game/shaders/vert.sc

@@ -1,5 +1,5 @@
 $input a_position, a_color0, a_texcoord0
-$output v_color0, v_uv0
+$output v_color0, v_uv0, v_wpos
 
 #include "common.sh"
 
@@ -8,4 +8,5 @@ void main()
 	gl_Position = mul(u_modelViewProj, vec4(a_position, 1.0));
 	v_color0 = a_color0;
 	v_uv0 = a_texcoord0;
+	v_wpos = mul(u_model[0], vec4(a_position, 1.0)).xyz;
 }