resources paths refact

res/shaders/main.glslf

@@ -0,0 +1,22 @@
+#version 330 core
+
+in vec4 a_color;
+in vec2 a_texCoord;
+in float a_distance;
+out vec4 f_color;
+
+uniform sampler2D u_texture0;
+uniform vec3 u_fogColor;
+uniform float u_fogFactor;
+uniform float u_fogCurve;
+
+void main(){
+	vec4 tex_color = texture(u_texture0, a_texCoord);
+	float depth = (a_distance/256.0);
+	float alpha = a_color.a * tex_color.a;
+	// anyway it's any alpha-test alternative required
+	if (alpha < 0.1f)
+		discard;
+	f_color = mix(a_color * tex_color, vec4(u_fogColor,1.0), min(1.0, pow(depth*u_fogFactor, u_fogCurve)));
+	f_color.a = alpha;
+}