ishikawash

#version 120
// === vertex shader
// 
// When you use OpenGL Shader Builder to execute shader programs, 
// * select plane as geometry
// * set resolution to 640x480
// * set scale_factor to 2.5

uniform vec2 resolution; 

ishikawash

#version 120
// === vertex shader
// 
// When you use OpenGL Shader Builder to execute shader programs, 
// * select plane as geometry
// * set resolution to 640x480
// * set scale_factor to 2.5

uniform vec2 resolution; 

ishikawash

// vertex shader
#version 120

uniform vec3 light_position; // in eye space

varying vec3 light_dir;
varying vec3 eye_dir;
varying vec2 uv;

vec3 calculate_tangent(vec3 n) {

ishikawash

// vertex shader ----------------------------------

uniform float t;
uniform float freq;
uniform float amp;

varying vec3 normal;
varying vec2 uv;

void main()