spread fix

start and end size merge

particle.frag

@@ -9,12 +9,19 @@ const int numParticles = 1;
 layout (location = 0) out vec4 FragColor;
 layout (location = 1) out vec4 BrightColor;
 
-uniform sampler2D tex;
+struct Texture{
+	float mixRatio;
+	sampler2D pastTexture, nextTexture;
+	bool animated;
+};
+
+uniform Texture tex;
 uniform float lifePercentage[500];
 uniform vec4 startColor, endColor;
 
 void main(){
 	float alpha = texture(tex.pastTexture, texCoords).r;
+
 	if(tex.animated)
 		alpha = mix(alpha, texture(tex.nextTexture, texCoords).r, tex.mixRatio);
 
@@ -22,6 +29,7 @@ void main(){
 	FragColor = c;
 
 	float brightness = dot(c.rgb, vec3(0.2126, 0.7152, 0.0722));
+
 	if(brightness > 1)
 		BrightColor = vec4(c.rgb, 1);
 }