diff options
Diffstat (limited to 'intern/cycles/kernel/shaders/node_sky_texture.osl')
| -rw-r--r-- | intern/cycles/kernel/shaders/node_sky_texture.osl | 48 |
1 files changed, 5 insertions, 43 deletions
diff --git a/intern/cycles/kernel/shaders/node_sky_texture.osl b/intern/cycles/kernel/shaders/node_sky_texture.osl index 05eed23bea8..9ce9008ef4b 100644 --- a/intern/cycles/kernel/shaders/node_sky_texture.osl +++ b/intern/cycles/kernel/shaders/node_sky_texture.osl @@ -34,40 +34,6 @@ vector sky_spherical_coordinates(vector dir) return vector(acos(dir[2]), atan2(dir[0], dir[1]), 0); } -/* Preetham */ -float sky_perez_function(float lam[9], float theta, float gamma) -{ - float ctheta = cos(theta); - float cgamma = cos(gamma); - - return (1.0 + lam[0] * exp(lam[1] / ctheta)) * (1.0 + lam[2] * exp(lam[3] * gamma) + lam[4] * cgamma * cgamma); -} - -color sky_radiance_old(normal dir, - float sunphi, float suntheta, color radiance, - float config_x[9], float config_y[9], float config_z[9]) -{ - /* convert vector to spherical coordinates */ - vector spherical = sky_spherical_coordinates(dir); - float theta = spherical[0]; - float phi = spherical[1]; - - /* angle between sun direction and dir */ - float gamma = sky_angle_between(theta, phi, suntheta, sunphi); - - /* clamp theta to horizon */ - theta = min(theta, M_PI_2 - 0.001); - - /* compute xyY color space values */ - float x = radiance[1] * sky_perez_function(config_y, theta, gamma); - float y = radiance[2] * sky_perez_function(config_z, theta, gamma); - float Y = radiance[0] * sky_perez_function(config_x, theta, gamma); - - /* convert to RGB */ - color xyz = xyY_to_xyz(x, y, Y); - return xyz_to_rgb(xyz[0], xyz[1], xyz[2]); -} - /* Hosek / Wilkie */ float sky_radiance_internal(float config[9], float theta, float gamma) { @@ -83,9 +49,9 @@ float sky_radiance_internal(float config[9], float theta, float gamma) (config[2] + config[3] * expM + config[5] * rayM + config[6] * mieM + config[7] * zenith); } -color sky_radiance_new(normal dir, - float sunphi, float suntheta, color radiance, - float config_x[9], float config_y[9], float config_z[9]) +color sky_radiance(normal dir, + float sunphi, float suntheta, color radiance, + float config_x[9], float config_y[9], float config_z[9]) { /* convert vector to spherical coordinates */ vector spherical = sky_spherical_coordinates(dir); @@ -111,7 +77,6 @@ shader node_sky_texture( int use_mapping = 0, matrix mapping = matrix(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0), vector Vector = P, - string sky_model = "Hosek / Wilkie", float theta = 0.0, float phi = 0.0, color radiance = color(0.0, 0.0, 0.0), @@ -124,10 +89,7 @@ shader node_sky_texture( if (use_mapping) p = transform(mapping, p); - - if (sky_model == "Hosek / Wilkie") - Color = sky_radiance_new(p, phi, theta, radiance, config_x, config_y, config_z); - else - Color = sky_radiance_old(p, phi, theta, radiance, config_x, config_y, config_z); + + Color = sky_radiance(p, phi, theta, radiance, config_x, config_y, config_z); } |