static void sh_from_disc(float *n, float area, float *shresult)
{
/* See formula (3) in:
* "An Efficient Representation for Irradiance Environment Maps" */
float sh[9], x, y, z;
x = n[0];
y = n[1];
z = n[2];
sh[0] = 0.282095f;
sh[1] = 0.488603f * y;
sh[2] = 0.488603f * z;
sh[3] = 0.488603f * x;
sh[4] = 1.092548f * x * y;
sh[5] = 1.092548f * y * z;
sh[6] = 0.315392f * (3.0f * z * z - 1.0f);
sh[7] = 1.092548f * x * z;
sh[8] = 0.546274f * (x * x - y * y);
sh_mul(sh, area);
sh_copy(shresult, sh);
}
dake::gl::program::program(std::initializer_list<shader> shaders):
program()
{
for (const shader &sh: shaders) {
// Let's just pray to god this works
shader sh_copy(sh.t, sh.id);
*this << sh_copy;
}
}
