[SOLVED] uniform float arrays GLSLES

[flyingsaucerinvasion]

Hi. I'm trying to get a uniform array of floats into my GLSLES shader, but all I'm getting is sytax error warnings:

How come the following doesn't work?

uniform float some_array[8];

GMS 1.4.1763

 

[Mool]

Its correct.

I use it like you:

uniform float time[8];
uniform float posX[8];
uniform float posY[8];
uniform float amount;
uniform vec2 screen;

There is a other error in your code...

 

[flyingsaucerinvasion]

If I remove that one line though, then the syntax error goes away.

Plus the only other lines above it are:

attribute vec2 in_Position; //[0 = back, 1 = front], bullet index
//--------------------------------------------------------------
varying vec4 v_vColour;
//--------------------------------------------------------------
uniform float time;

EDIT

here's the whole real vertex shader. Can you spot the error? The compiler is saying a syntax error is on line 7. I tried switching to using arrays of vectors in case an array of floats alone wasn't working for some reason.

//--------------------------------------------------------------
    attribute vec2 in_Position;  //[0 = back, 1 = front], bullet index
    //--------------------------------------------------------------      
    varying vec4 v_vColour;
    //--------------------------------------------------------------
    uniform float time;
    uniform vec2 bullet_position[64];  // <---- line 7
    uniform vec2 bullet_speed[64];
    uniform vec2 bullet_lifetime[64];
    uniform vec3 bullet_colour[64];
    //--------------------------------------------------------------
    uniform mat4 current_matrix;
    uniform mat4 previous_matrix;
    //--------------------------------------------------------------
    void main() {
        int _index = int(in_Position.y);
        //--------------------------------------------------------------
        vec2 _initial_position = bullet_position[ _index ];
        //--------------------------------------------------------------
        vec2 _speed = bullet_speed[ _index ];
        //--------------------------------------------------------------
        float _time_alive = time - bullet_lifetime[ _index ].x;
        //--------------------------------------------------------------
        vec4 _front_position = current_matrix * vec4( _initial_position + _speed * _time_alive, 0.0, 1.0 );
        vec4 _back_position = previous_matrix * vec4( _initial_position + _speed * (_time_alive - 1.0), 0.0, 1.0);
        gl_Position = mix( _back_position, _front_position, in_Position.x );
        //--------------------------------------------------------------
        v_vColour = vec4( bullet_colour[ _index ], 1.0 );
    }
//--------------------------------------------------------------

 

[flyingsaucerinvasion]

problem remains unsolved and unexplained.

 

[flyingsaucerinvasion]

I still haven't made any progress solving this problem. Someone has got to know what's going on. Do I have to enable arrays somehow? Are arrays simply not avialable in GLSLES?

 

[flyingsaucerinvasion]

Oh god, this is embarrassing. The error was actually in the fragment shader, not in the vertex shader as I was assuming, and the error was the result of a missing semicolon.

The lesson here is to read error messages very carefully. Also a good idea, post the exact wording of your error message when asking for help.

<-- egg on my face.