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/* <copyright>
This file contains proprietary software owned by Motorola Mobility, Inc.<br/>
No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/>
(c) Copyright 2011 Motorola Mobility, Inc. All Rights Reserved.
</copyright> */
#ifdef GL_ES
precision highp float;
#endif
// attributes
attribute vec3 a_pos;
attribute vec2 texcoord;
// uniforms
uniform float u_time;
uniform float u_zmin;
uniform float u_zmax;
uniform float u_surfaceAlpha;
// matrix uniforms
uniform mat4 u_mvMatrix;
uniform mat4 u_projMatrix;
// varying
varying vec2 v_texCoord0;
// constants
const float zSpeed = 10.0;
void main()
{
// Transform position
vec4 pos = vec4(a_pos,1);
float dz = u_time*zSpeed;
float n = floor( dz/(u_zmax-u_zmin) );
dz -= n*(u_zmax - u_zmin);
float z = pos.z + dz;
if (z > u_zmax)
{
z = u_zmin + (z - u_zmax);
}
pos.z = z;
gl_Position = u_projMatrix * u_mvMatrix * pos;
v_texCoord0 = texcoord;
}
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