Top #pbr dweets

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

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    u(t) is called 60 times per second.
    t: Elapsed time in seconds.
    S: Shorthand for Math.sin.
    C: Shorthand for Math.cos.
    T: Shorthand for Math.tan.
    R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5)
    c: A 1920x1080 canvas.
    x: A 2D context for that canvas.

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pavel

remix of d/1112 by u/sigveseb

function u(t) {

for(let w=c.width=127,i=9086,a,b,n,B;a=i&w,b=i--/w;x.fillRect(a,b,1,1/(t+a/n&1^b/n)))n=b-20,B=(w*S(t*9+n/9)+(a-40)**2+n*n)/1e3,n*=B>1||C(B)

Mar 7 2019 8:31 PM UTC

}// 139/140

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#improved performance

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u/pavel

Original runs at 6fps on my machines this runs at 60fps. I lowered the resolution by a quarter (4x perf) and golfed 13 chars to let me declare all vars locally (2x perf).
u/tomxor

wow! this is a massive perf improvement, the original was impressive but I couldn't really see it realtime. Nice one :)
u/katkip

how
u/nender

Wow! This is amazing!
u/sigveseb

Nice!
u/f8f82804

#raytrace #d3 #pbr
u/Cloud

Cool!!!

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f8f82804

remix of d/9162 by u/f8f82804

function u(t) {

eval(unescape(escape`睩瑨⡸⥦潲⡩㴳ㄴ㭩ⴭ㭢敧楮偡瑨⠩⥡牣⠲㐰⨨⡣㵓⡡㵩⼱〰⤪匨戽琫椩⤫㐩ⰱㄲ⨨匨愩⩃⡢⤭㈪䌨愩⬴⤬㐰⨨匨愩⬮㈩ⰰⰷ⤬晩汬⠩ⱦ楬汓瑹汥㵠桳氨⑻㌶〪⠨戯㘭琯㐩┱⥽‹〥⑻㌰⨨ㄫ挫挪⨹⥽╠`.replace(/u(..)/g,"$1%")))

Aug 8 2018 7:04 PM UTC

}// 136/140

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Fancy #phong #shading #sphere -- #compressed #d3 #pbr

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u/f8f82804

Uncompressed: with(x)for(i=314;i--;beginPath())arc(240*((c=S(a=i/100)*S(b=t+i))+4),112*(S(a)*C(b)-2*C(a)+4),40*(S(a)+.2),0,7),fill(),fillStyle=hsl(${360*((b/6-t/4)%1)} 90%${30*(1+c+c**9)}%
u/magna

#sequins
u/lionleaf

Now that's beautiful!
u/f8f82804

I love it, but I really wanted to do it without compression. I even tried using fillText('●'). See my remix for the closest I could get.
u/iverjo

Sweet! #colorful
u/joeytwiddle

#hiddengem #model
u/f8f82804

#fullhd

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f8f82804

remix of d/9161 by u/f8f82804

function u(t) {

c.width=100
for(i=314;i--;)x.fillRect(9*S(α=i/100)*S(β=t+i)+50,4*((a=S(α)*C(β))-2*C(α)+6),3,3),x.fillStyle=`hsl(${t*i} 90%${30*(1+a+a**9)}%`

Aug 7 2018 7:45 PM UTC

}// 140/140

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Remix with ambient light #phong #pbr

u/f8f82804

#d3
u/magna

Nice!
u/aleamb

fucking awesome!

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f8f82804

remix of d/9174 by u/f8f82804

function u(t) {

with(x)for(i=s=311;--i;beginPath(fillStyle=`hsl(${i}rad 90%${99-i/2}%`))fill(arc(s*(A=S(a=i/99))*S(b=t+i)+960,220*(A*C(b)-C(a)+2),60*A,0,7))

May 23 2022 5:18 PM UTC

}// 140/140

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#rainbow #sphere demake -- #d3 #shading #pbr

u/rh2

very cool

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Odog8

function u(t) {

c.width=200;for(j=A=50;j--+A;){for(l=A;l--+A;R=0){for(i=A;i--;T=
l*l/A+j*j/A+(R-3)**2-9
)T>0&&(R+=.1);x.fillRect(l+A,j+A,1,R/3)}}

Dec 17 2021 7:04 PM UTC

}// 130/140

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raymarcher, middle is SDF, l and j are x and y, R is z

u/tomxor

#raymarching #sdf
u/tomxor

Interesting to see it done a little differently
u/f8f82804

#d3 #pbr #sphere

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f8f82804

remix of d/9185 by u/f8f82804

function u(t) {

c.width=500;a=29;for(i=240;α=C(T=i/a-t),i--;)for(j=6;j--;x.fillRect(i,a+j*a+S(T)*7,1,30))x.fillStyle=`hsl(${a*j**1.4} 99%${9+a*(0<α)*α**2}%`

Aug 9 2018 9:22 PM UTC

}// 140/140

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Remix #rainbow #flag with improved palette and #phong #shading with better shadows- - #pride #pbr

u/f8f82804

Correct shadows are implemented with the 0<α factor. To golf this in, I had to drop the diffuse reflection term and reuse constants. Palette improvements just took tweaking without extra characters.
u/f8f82804

Loop restructuring also give a very slight FPS improvement.

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f8f82804

remix of d/9160 by u/f8f82804

function u(t) {

c.width=100
for(i=314;i--;)x.fillRect(10*S(α=i/100)*S(β=t+i)+50,4*((a=S(α)*C(β))-2*C(α)+6),2,4),x.fillStyle=`hsl(${t*i} 90%${45*(a+a**9)}%`

Aug 7 2018 7:33 PM UTC

}// 139/140

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Rainbow marble with Phong lighting #3d #pbr

u/f8f82804

#phong
u/yonatan

Really nice! both of them.
u/f8f82804

@yonatan Thanks! I'm enjoying getting into this, and a Phong shader seemed like a good goal.
u/lionleaf

u/f8f82804 Welcome to dwitter! Nice dweet! #shading
u/aleamb

really stunning

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f8f82804

remix of d/9180 by u/f8f82804

function u(t) {

c.width=500
for(j=6;j--;)for(i=255;i--;x.fillRect(i,50+j*25+S(T=i/35-t*3)*7,1,26))x.fillStyle=`hsl(${32*j**1.3} 90%${23*(1+(a=C(T))+a**5)}%`

Aug 9 2018 2:54 PM UTC

}// 140/140

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#rainbow #phong #flag - - #pride #pbr

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f8f82804

remix of d/9187 by u/f8f82804

function u(t) {

with(x)for(φ=311;α=S(θ=φ/99),β=99*α*S(--φ+t);beginPath(fillStyle=`hsl(${φ} 90%${9+(β>0)*β}%`))fill(arc(β+960,75*(α*C(φ+t)-C(θ)+6),20*α,0,7))

Aug 10 2018 5:54 PM UTC

}// 140/140

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#golf #sphere #animated #diffuse #shading #sequins #sprite

u/f8f82804

#pbr

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f8f82804

remix of d/9174 by u/f8f82804

function u(t) {

with(x)for(φ=311;α=S(θ=φ/99),β=α*S(--φ);beginPath())arc(130*β+960,99*(α*C(φ)-C(θ)+4),28*α,0,7),fill(),fillStyle=`hsl(9 90%${30*(1+β+β**9)}%`

Aug 9 2018 7:21 PM UTC

}// 140/140

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heavily golfed #phong #sphere to allow circular #sprite without compression

u/f8f82804

#pbr #static

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