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hello, i am currently having the same bug as described in :
http://bugs.povray.org/task/17
on Povray 3.7 RC7 msvc10.win64
the bug was fixed in change #4822, but in my scene it is recurring (or I may
have done something dumb, i hope so)
bug not sensitive to adc_bailout or max_trace_level
bug sensitive to +WTn
workaround is to render with +WT1 (one thread i presume)
synopsis of the scene animation :
a planet is seen from space at a quite low orbit. the orbiting camera moves to
the unlit side of the planet and the 32 pixels blotches appear in the
atmosphere. surface is made with isosurfaces, one for ground, one for water.
unrelated elements are commented.
uses LightSysIV for sun, but bug persists with standard light sources
atmosphere object uses rayleigh scattering media + density color map.
render procedure : scene use a state.dat file that stores an angle (function
describing angular velocity is not integrable, so i had to sum the angles for
rotation of the probe in a state file). because of the state you'll have to
render all frames from 1 to 40 at 320/240 or less to make it fast enough
depending on your configuration to see the bug around frames 20 to 40.
it should take less than 10 minutes.
povray.ini configuration :
initial_clock=0
final_clock=40
initial_frame=0
final_frame=40
thank you for any hints, or corrections to my code.
luckily, the render time during the unlit phases of the robit is a small portion
of the animation
Full scene for reference :
//**********************INCLUDES**********************************
#include "colors.inc" // The include files contain
#include "stones.inc" // pre-defined scene elements
#include "textures.inc" // pre-defined scene elements
#include "shapes.inc"
#include "glass.inc"
#include "metals.inc"
//******************** CIE & LIGHTSYS ****************************
#include "LightSysIV\CIE.inc"
//CIE_ColorSystemWhitepoint(sRGB_ColSys,Illuminant_D50)
#include "LightSysIV\lightsys.inc"
#include "LightSysIV\rspd_jvp.inc" // predefined material samples
#include "LightSysIV\CIE.inc"
#include "LightSysIV\CIE_tools.inc"
#include "LightSysIV\lightsys_constants.inc"
#include "LightSysIV\espd_lightsys.inc"
#include "LightSysIV\lspd_elements.inc"
#include "LightSysIV\rspd_pantone_coated.inc"
#include "LightSysIV\rspd_pantone_matte.inc"
#include "LightSysIV\rspd_aster.inc"
#include "LightSysIV\CIE_Skylight"
//********************** PERSONAL INCLUDES**********************************
//#include "heat-shield2.pov"
//********************** GLOBAL SETTINGS AND SWITCHES***********************
#declare one_frame = 0;
#declare radiosity_on = 0;
global_settings {
assumed_gamma 1
max_trace_level 20
ambient_light <0,0,0>
adc_bailout 0.002
#if (radiosity_on = 1)
radiosity {
brightness 2.2
count 50
error_bound 0.15
gray_threshold 0.0
low_error_factor 0.2
minimum_reuse 0.015
nearest_count 10
recursion_limit 3
adc_bailout 0.01
max_sample -1.0
media off
normal off
always_sample 1
pretrace_start 0.08
pretrace_end 0.01
}
#end
}
//********************** LIGHTS, STARS & ARTIFICIAL & SUN
*******************************
//Star field
/*
sphere {
<0,0,0>, 100
hollow
pigment {
image_map {
png "starmap.png"
map_type 1
once
}
}
finish {
ambient 0
diffuse 0
}
scale 10000000000000
}
*/
light_source{
<0,20,-50>*10
Light_Color(SunColor,1)
adaptive 0
jitter
}
#declare LC3 = EmissiveSpectrum(ES_HS_Sodium_Lamp);
#declare LC4 = EmissiveSpectrum(ES_Mitsubishi_Metal_Halide);
#declare LM3 = Lm_GE_LinearR7S_500w;
//#declare probe_projector = Light_Color(LC3,LM3*10);
//-----------------------------------ALIEN MEDUSA MACRO-------------------------
#macro alien_medusa(pos,size_rel,color_base_emi,color_base_xmit,trsp)
sphere { pos, size_rel
hollow
interior {
media{
emission
rgb<0.2,0.1,0.8*color_base_emi>*0.02/size_rel*10*color_base_emi
//scattering{ 1, 0.17 exnction 0.01}
method 3
intervals 5
samples 1,1
density{
spherical
turbulence 0
color_map {
[0 rgb
<0.2,0.1,0.8>*5/size_rel*10*color_base_emi]//border
[1 rgb
<0.5,0,0.2>*2/size_rel*10*color_base_emi]//center
}
}
}
}
texture {
pigment{ crackle scale 0.1
color_map{[0.0 color rgbt
<0,0,0.7,1*trsp>*1.3*color_base_xmit]
[0.5 color rgbt
<0.5,0,0.75,0.7*trsp>*1.15*color_base_xmit]
[0.5 color rgbt
<0.2,0.5,0.8,0.3*trsp>*1.25*color_base_xmit]
[1.0 color rgbt
<0.2,0,2,0.3*trsp>*1.3*color_base_xmit]
}//end of color_map
} // end of pigment}
normal {
waves 1.5 frequency 0.5 scale 0.02
}
finish {
ambient 0.01 diffuse 0.5 phong 0.5 crand 2.3
reflection{ 0.6 metallic 0.85}
//irid { 0.2 thickness 0.1 }
}
} // end of texture
scale<1,1,1> rotate<0,0,0> //translate<0,0.5,0>
} // end of sphere
#end
/*
alien_medusa(<0,0,0>,2.55,1,1.2,0.5)
alien_medusa(<0,0,4.5>,1.25,1,1.6,0.4)
alien_medusa(<4.5,0,0>,1.25,1,1.5,0.35)
alien_medusa(<-4.5,0,4.5>,1.25,1,1.8,0.3)
alien_medusa(<4.5,0,-4.5>,1.25,1,2,0.3)
*/
//-----------------------------------OCEAN FUNCTIONS-------------------------
#declare fn_pattern=
function {
pattern { bozo turbulence 2 noise_generator 1.2
scale <1,1,1>*0.7 }
}
#declare fn_water=
function {
sqrt(pow(x,2) + pow(y,2) + pow(z,2)) -
0.04*((fn_pattern(x,y,z))) - 4.47
}
//-----------------------------------TERRAIN FUNCTIONS-------------------------
#declare fn_pattern2=
function {
pattern { wrinkles turbulence 4 noise_generator
2.2 scale <1,1,1>*0.7 }
}
#declare fn_terrain=
function {
sqrt(pow(x,2) + pow(y,2) + pow(z,2)) -
abs(0.07*((fn_pattern2(x,y,2*z)))) - 4.478
}
#declare ocean = isosurface {
function { fn_water(x, y, z) }
accuracy 0.05
max_gradient 5
contained_by { sphere { <0,0,0>,5.2 }}
texture {
pigment { color rgbt <0.0,0.3,0.6,0.4>
}
finish {ambient 0.0 reflection 0.4
//irid { 0.6 thickness 0.4 }
}
}
}
#declare terrain = isosurface {
function { fn_terrain(x, y, z) }
accuracy 0.05
max_gradient 2.5
contained_by { sphere { <0,0,0>,5.25 }}
texture {
pigment {color rgb < 0.8, 0.6, 0.15>}
normal {granite 0.2 scale 0.02}
normal { bumps 0.4 scale 0.02}
finish {
brilliance 1.6
specular 0.3
ambient 0.0
}
}
}
declare atmosphere = sphere {
<0,0,0>,1
hollow
material {
texture {
pigment { rgbt <1,1,1,0.8> }
//finish {irid { 2.6
thickness 0.4 }}
}
interior {
media {
method 3
intervals 1
confidence 0.0001
variance 1.0/1.0
scattering
{4,<0,0.502,1.0>}
density {
spherical
color_map
{
[ 0.0 rgb <0.00,0.00,0.00>*6 ]
[ 0.005 rgb <0.002,0.002,0.002>*6 ]
[ 0.1 rgb 0.08*4.5 ]
[ 0.2 rgb 0.1*3 ]
[ 0.3 rgb 0.5*1.5 ]
[ 1.0 rgb 0 ]
}
}
}
}
}
scale 4.9
}
#declare CloudTexture = texture {
pigment {
bozo
colour_map {
[0.00 colour rgbt
<0,0,0,1>]
[0.40 colour rgbt
<1,1,1,1>]
[0.60 colour rgbt
<1,1,1,0.80>]
[0.85 colour rgbt
<1,1,1,0>]
[1.00 colour rgbt
<1,1,1,0>]
}
turbulence 4.0
lambda 3.0
omega 0.55
ramp_wave
scale <1,0.55,0.5>*5
}
}
#declare CloudTexture2 = texture {
pigment {
bozo
colour_map {
[0.00 colour rgbt
<0,0,0,1>]
[0.55 colour rgbt
<1,1,1,1>]
[0.65 colour rgbt
<1,1,1,0.70>]
[0.80 colour rgbt
<1,1,1,0>]
[1.00 colour rgbt
<1,1,1,0>]
}
turbulence 2.0
lambda 3.0
omega 0.55
ramp_wave
scale <1,0.9,0.5>*5
}
}
#declare CloudSphere1 = sphere { <0,0,0>,4.65
texture { CloudTexture }
hollow
}
#declare Cloudsphere2 = sphere { <0,0,0>, 4.72
texture { CloudTexture2 }
hollow
}
#declare PlanetCloudSphere0 = union {
object {CloudSphere1}
object {Cloudsphere2}
}
object {PlanetCloudSphere0}
object {terrain}
object {ocean}
object {atmosphere}
#declare max_items = 1;
#declare amt = array[1];
#declare amt2 = 1.4*exp(sin(0.025*((clock+1) - 72.2))) - 3.8;
#macro SaveState()
#fopen file "state.dat" write
#local i = 0;
# while (i<max_items)
#write ( file, amt[i])
#local i=i+1;
#end
#fclose file
#end
#macro LoadState()
#fopen rfile "state.dat" read
#local i = 0;
#while (i<max_items)
#read ( rfile, amt3)
#local i=i+1;
#end
#fclose file
#declare amt[0] = amt3;
#end
#if (clock = 1)
#declare amt[0] = amt2;
SaveState()
#end
LoadState()
#declare orbit = <-0.5*exp(sin(0.025*(clock - 72.2))) + 5.87,0,0>;
#declare height = orbit.x;
#declare orbit = vrotate(orbit,<-60,0,0>); // tilt orbit up
#declare orbit = vrotate(orbit,<0,30,0>); // twist orbit a bit
#declare orbit = vrotate(orbit,<0,amt[0],0>); // rotate about origin
#declare orbit2 = <-0.5*exp(sin(0.025*(clock - 72.2))) + 5.87,0,0>;
#declare orbit2 = vrotate(orbit2,<-60,0,0>); // tilt orbit up
#declare orbit2 = vrotate(orbit2,<0,30,0>); // twist orbit a bit
#declare orbit2 = vrotate(orbit2,<0,amt[0] - 60,0>); // rotate about origin
#declare amt[0] = amt[0] + amt2;
#if (one_frame = 0)
SaveState()
#end
#declare height2 = trace(ocean,orbit,vnormalize(-orbit)*0.01);
#declare prograde = orbit2 - orbit;
#declare pro_right = vcross(orbit,prograde);
#declare orbit_v = orbit;
//#declare Pt = <0,10,-10>;
//#declare Orig = <0,0,0>;
//#declare Axis = <0,0,1>;
#declare dstx = abs(orbit.x) - abs(height2.x);
#declare dsty = abs(orbit.y) - abs(height2.y);
#declare dstz = abs(orbit.z) - abs(height2.z);
#declare height3 = sqrt(pow(dstx,2) + pow(dsty,2) + pow(dstz,2));
#warning concat("HEIGHT3 ", str(height3.x,5,5))
#warning concat("ROT ", str(amt2,5,5))
#warning concat("ROT integral ", str(amt[0],5,5))
#warning concat("orbit_v x ", str(orbit_v.x,5,5))
#warning concat("orbit_v y ", str(orbit_v.y,5,5))
#warning concat("orbit_v z ", str(orbit_v.z,5,5))
#warning concat("height2 x ", str(height2.x,5,5))
#warning concat("height2 y ", str(height2.y,5,5))
#warning concat("height2 z ", str(height2.z,5,5))
#warning concat("orbit x ", str(orbit.x,5,5))
#warning concat("orbit y ", str(orbit.y,5,5))
#warning concat("orbit z ", str(orbit.z,5,5))
#warning concat("orbit2 x ", str(orbit2.x,5,5))
#warning concat("orbit2 y ", str(orbit2.y,5,5))
#warning concat("orbit2 z ", str(orbit2.z,5,5))
#warning concat("prograde x ", str(prograde.x,5,5))
#warning concat("prograde y ", str(prograde.y,5,5))
#warning concat("prograde z ", str(prograde.z,5,5))
//object {heat_shield rotate y*180 scale 0.0001 translate (orbit) translate
(orbit2/10000 - orbit/10000)*0.10*clock}
//********************************* PROBE CAMERA
*******************************************
camera {
//location (Orig + vaxis_rotate(Pt - Orig, Axis, 5*clock))
location orbit
look_at orbit2
sky vnormalize(orbit)
angle 50
}
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org> wrote: