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POCan't initialise shader VALIDATE_STATUS
 

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  1. POCan't initialise shader VALIDATE_STATUS
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    <p>Is it possible to somehow modify this fragment shader so that it doesn't use the oes_texture_float extension? Because I get an error on the machine which is supposed to run a webgl animation. </p> <p>I set up my scene using three.js webglrenderer and a cube with a shadermaterial applied to it. On My macbook pro, everything works fine, but on some windows machine I get the error "float textures not supported" (I've searched and found that this probably has to do with oes_texture_float extension)</p> <p>So I'm guessing I need to change my fragment shader? Or am I missing the point completely?</p> <pre><code>&lt;script type="x-shader/x-vertex" id="vertexshader"&gt; // switch on high precision floats #ifdef GL_ES precision highp float; #endif void main() { gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0); } &lt;/script&gt; &lt;script type="x-shader/x-fragment" id="fragmentshader"&gt; #ifdef GL_ES precision mediump float; #endif #define PI 3.14159265 uniform float time; uniform vec2 resolution; float f(float x) { return (sin(x * 1.50 * PI ) + 19.0); } float q(vec2 p) { float s = (f(p.x + 0.85)) / 2.0; float c = smoothstep(0.9, 1.20, 1.0 - abs(p.y - s)); return c; } vec3 aurora(vec2 p, float time) { vec3 c1 = q( vec2(p.x, p.y / 0.051) + vec2(time / 3.0, -0.3)) * vec3(2.90, 0.50, 0.10); vec3 c2 = q( vec2(p.x, p.y / 0.051) + vec2(time, -0.2)) * vec3(1.3, .6, 0.3); vec3 c3 = q( vec2(p.x, p.y / 0.051) + vec2(time / 5.0, -0.5)) * vec3(1.7, 0.4, 0.20); return c1+c2+c3; } void main( void ) { vec2 p = ( gl_FragCoord.xy / resolution.xy ); vec3 c = aurora(p, time); gl_FragColor = vec4(1.0-c, c); } &lt;/script&gt; </code></pre> <p>EDIT: this has nothing to do with the floating point texture, but rather with something in my fragment shader. Three.js gives me the error: "Can't initialise shader, VALIDATE_STATUS"</p>
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