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Author Topic: Problem with maps  (Read 5475 times)
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3dickulus
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« Reply #45 on: March 25, 2016, 11:39:42 AM »

yeah it's hard to see but...
if images are the same then a divide operation will result in all 1s
EGI-200-default / EGI-200-wanghash = ! all 1s


* EGI-200-diff.png (147.46 KB, 425x360 - viewed 160 times.)
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3dickulus
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« Reply #46 on: March 25, 2016, 11:41:34 AM »

...same for SkyPath-200 (png was too big so used jpg 99%)


* Skypath-200-diff.jpg (234.56 KB, 425x360 - viewed 152 times.)
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Crist-JRoger
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« Reply #47 on: May 19, 2016, 11:24:36 PM »

how about this? Is this correct code? I was looking for a elegant solution, but how from a mathematical point of view?  embarrass I mean use it without seed, sin, fract and a lot of numbers...
Code:
vec2 rand2(vec2 pos){
uint ix = floatBitsToUint(pos.x);
uint iy = floatBitsToUint(pos.y);
return vec2((wang_hash(wang_hash(ix)+iy)) / 4294967296.0, (wang_hash(wang_hash(iy)+ix)) / 4294967296.0);
}


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3dickulus
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« Reply #48 on: May 20, 2016, 06:55:30 AM »

my GPU is currently occupied with some rendering tongue stuck out so can't test it right now but a few renders comparing the old routine with this one will tell very quickly if it is good  wink
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