1 files changed, 30 insertions, 0 deletions
diff --git a/src/shaders/stars.vert b/src/shaders/stars.vert
new file mode 100644
index 0000000..8737482
--- /dev/null
+++ b/src/shaders/stars.vert
@@ -0,0 +1,30 @@
+precision highp float;
+attribute vec3 stars;
+uniform float time;
+uniform float world_x;
+uniform float world_y;
+uniform float world_x_period;
+uniform float world_y_period;
+uniform vec4 lamp1;
+uniform vec4 lamp2;
+uniform vec4 lamp3;
+uniform vec4 lamp4;
+uniform vec4 lamp5;
+uniform vec4 lamp6;
+uniform vec4 lamp7;
+uniform vec4 lamp8;
+uniform mat4 MV;
+uniform mat4 P;
+void main() {
+	float world_x_off = mod(world_x, world_x_period);
+	float world_y_off = mod(world_y, world_y_period);
+	vec4 pos = P * MV * vec4(stars.x - world_x_off, stars.y - world_y_off, -0.1, 1.0);
+	gl_Position = pos;
+	float intensity = sin(stars.z + time) * cos(time) + 1.;
+	/*
+	if(distance(pos.xyz, lamp1.xyz) < 80.)
+		intensity = 0.;
+	*/
+	gl_PointSize = pow(intensity, 2.) * stars.z * 0.3;
+	//gl_PointSize = distance(pos.xyz, lamp1.xyz);
+}