Multiple require problems

[Eronana]

a.glsl

#ifdef HELLO
#pragma glslify: b = require('./b.glsl')
float a(float x) {
	return b(x);
}
#else
float a(float x) {
	return x * 10.0;
}
#endif

#pragma glslify:export(a)

b.glsl

float b(float x) {
	return x * 11.11;
}

#pragma glslify:export(b)

c.glsl

#pragma glslify: a = require('./a.glsl')
#pragma glslify: b = require('./b.glsl')

void main() {
	gl_FragColor = vec4(a(1.0), b(1.0), 0.0, 0.0);
}

glslify < c.glsl

#define GLSLIFY 1
#ifdef HELLO
float b(float x) {
	return x * 11.11;
}

float a(float x) {
	return b(x);
}
#else
float a(float x) {
	return x * 10.0;
}
#endif

void main() {
	gl_FragColor = vec4(a(1.0), b(1.0), 0.0, 0.0);
}

the problem is, no function b when HELLO is undefined, it will caused some issue.
so maybe glslify shouldn't do too much processing, user could use macros to avoid multiple require like C/C++.

[Eronana]

fixed here glslify/glslify-bundle#7
please update dependencies when it is published.

[hughsk]

A temporary workaround for this issue is to require b before a. I believe it's possible to do this in all cases where a module is required between preprocessor conditionals like that, even if you're not using b in the file where you're requiring it.

#pragma glslify: b = require('./b.glsl')
#pragma glslify: a = require('./a.glsl')

void main() {
	gl_FragColor = vec4(a(1.0), b(1.0), 0.0, 0.0);
}

#define GLSLIFY 1
float b(float x) {
        return x * 11.11;
}

#ifdef HELLO

float a(float x) {
        return b(x);
}
#else
float a(float x) {
        return x * 10.0;
}
#endif

void main() {
        gl_FragColor = vec4(a(1.0), b(1.0), 0.0, 0.0);
}