varying vec3 lightvec;
varying vec4 color;
void main(void) {
vec3 N = normalize(normal);
/* Calculate the lighting */
float intensity = max(0.0, dot(N, normalize(lightvec)));
float glare = max(0.0, dot(N, normalize(gl_LightSource[0].halfVector.xyz)));
vec4 ambient = gl_LightSource[0].ambient;
vec4 diffuse = gl_LightSource[0].diffuse * intensity;
vec4 specular = gl_LightSource[0].specular * pow(glare, 128.0);
gl_FragColor = (ambient + diffuse + specular) * color;
}
''')
smooth_prog = shader.ShaderProgram(vert_shader, smooth_frag_shader)
simple_bump_frag_shader = shader.FragmentShader('simple_bump', shader_noise_glsl + '''
/* Simple normal mapper using perlin noise */
uniform float height;
varying vec3 position;
varying vec3 normal;
varying vec3 lightvec;
varying vec4 color;
void main(void) {
const float offset = 0.05; // offset for computing surface derivative
/* Calculate the normal resulting from the bump surface */
float h = pnoise(position);
h = h*h*h*h * 0.15;
if (h > 0.0) {
/* Calculate the lighting */
vec3 N = normalize(normal);
float intensity = max(0.0, dot(N, normalize(lightvec)));
float glare = max(0.0, dot(N, normalize(gl_LightSource[0].halfVector.xyz)));
vec4 ambient = gl_LightSource[0].ambient;
vec4 diffuse = gl_LightSource[0].diffuse * intensity;
vec4 specular = gl_LightSource[0].specular * pow(glare, 64.0);
gl_FragColor = (ambient + diffuse + specular) * color * h;
} else {
discard;
}
}
''')
atmosphere_prog = shader.ShaderProgram(vert_shader, atmosphere_frag_shader)
atmosphere_prog.install()
atmosphere_prog.uset1F('scale', 0.3)
if __name__ == '__main__':
import sys
global xrot, yrot, d
win = pyglet.window.Window(width=640,
height=640,
resizable=True,
visible=False,
config=pyglet.gl.Config(sample_buffers=1,
samples=4,
double_buffer=True,
depth_size=24))