void ProceduralSky::_update_sky() {
bool use_thread = true;
if (first_time) {
use_thread = false;
first_time = false;
}
#ifdef NO_THREADS
use_thread = false;
#endif
if (use_thread) {
if (!sky_thread) {
sky_thread = Thread::create(_thread_function, this);
regen_queued = false;
} else {
regen_queued = true;
}
} else {
Ref<Image> image = _generate_sky();
VS::get_singleton()->texture_allocate(texture, image->get_width(), image->get_height(), 0, Image::FORMAT_RGBE9995, VS::TEXTURE_TYPE_2D, VS::TEXTURE_FLAG_FILTER | VS::TEXTURE_FLAG_REPEAT);
VS::get_singleton()->texture_set_data(texture, image);
_radiance_changed();
}
}
void PanoramaSky::set_panorama(const Ref<Texture> &p_panorama) {
panorama = p_panorama;
if (panorama.is_valid()) {
_radiance_changed();
} else {
VS::get_singleton()->sky_set_texture(sky, RID(), 0);
}
}
void ProceduralSky::_thread_done(const Ref<Image> &p_image) {
VS::get_singleton()->texture_allocate(texture, p_image->get_width(), p_image->get_height(), 0, Image::FORMAT_RGBE9995, VS::TEXTURE_TYPE_2D, VS::TEXTURE_FLAG_FILTER | VS::TEXTURE_FLAG_REPEAT);
VS::get_singleton()->texture_set_data(texture, p_image);
_radiance_changed();
Thread::wait_to_finish(sky_thread);
memdelete(sky_thread);
sky_thread = NULL;
if (regen_queued) {
sky_thread = Thread::create(_thread_function, this);
regen_queued = false;
}
}
void Sky::set_radiance_size(RadianceSize p_size) {
ERR_FAIL_INDEX(p_size, RADIANCE_SIZE_MAX);
radiance_size = p_size;
_radiance_changed();
}
void ProceduralSky::_update_sky() {
update_queued = false;
PoolVector<uint8_t> imgdata;
static const int size[TEXTURE_SIZE_MAX] = {
1024, 2048, 4096
};
int w = size[texture_size];
int h = w / 2;
imgdata.resize(w * h * 4); //RGBE
{
PoolVector<uint8_t>::Write dataw = imgdata.write();
uint32_t *ptr = (uint32_t *)dataw.ptr();
Color sky_top_linear = sky_top_color.to_linear();
Color sky_horizon_linear = sky_horizon_color.to_linear();
Color ground_bottom_linear = ground_bottom_color.to_linear();
Color ground_horizon_linear = ground_horizon_color.to_linear();
//Color sun_linear = sun_color.to_linear();
Vector3 sun(0, 0, -1);
sun = Basis(Vector3(1, 0, 0), Math::deg2rad(sun_latitude)).xform(sun);
sun = Basis(Vector3(0, 1, 0), Math::deg2rad(sun_longitude)).xform(sun);
sun.normalize();
for (int i = 0; i < w; i++) {
float u = float(i) / (w - 1);
float phi = u * 2.0 * Math_PI;
for (int j = 0; j < h; j++) {
float v = float(j) / (h - 1);
float theta = v * Math_PI;
Vector3 normal(
Math::sin(phi) * Math::sin(theta) * -1.0,
Math::cos(theta),
Math::cos(phi) * Math::sin(theta) * -1.0);
normal.normalize();
float v_angle = Math::acos(normal.y);
Color color;
if (normal.y < 0) {
//ground
float c = (v_angle - (Math_PI * 0.5)) / (Math_PI * 0.5);
color = ground_horizon_linear.linear_interpolate(ground_bottom_linear, Math::ease(c, ground_curve));
} else {
float c = v_angle / (Math_PI * 0.5);
color = sky_horizon_linear.linear_interpolate(sky_top_linear, Math::ease(1.0 - c, sky_curve));
float sun_angle = Math::rad2deg(Math::acos(sun.dot(normal)));
if (sun_angle < sun_angle_min) {
color = color.blend(sun_color);
} else if (sun_angle < sun_angle_max) {
float c2 = (sun_angle - sun_angle_min) / (sun_angle_max - sun_angle_min);
c2 = Math::ease(c2, sun_curve);
color = color.blend(sun_color).linear_interpolate(color, c2);
}
}
ptr[j * w + i] = color.to_rgbe9995();
}
}
}
Ref<Image> image;
image.instance();
image->create(w, h, false, Image::FORMAT_RGBE9995, imgdata);
VS::get_singleton()->texture_allocate(texture, w, h, Image::FORMAT_RGBE9995, VS::TEXTURE_FLAG_FILTER | VS::TEXTURE_FLAG_REPEAT);
VS::get_singleton()->texture_set_data(texture, image);
_radiance_changed();
}
