Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
tsukihiができるまで #レイトレ合宿4
Search
がむ
August 27, 2016
Technology
1
8.6k
tsukihiができるまで #レイトレ合宿4
レイトレ合宿4で発表したレンダラーtsukihiの紹介です。
https://sites.google.com/site/raytracingcamp4/
がむ
August 27, 2016
Tweet
Share
More Decks by がむ
See All by がむ
redflash [4D] renderer / Raytracing Camp 9
gam0022
0
160
Object Space Raymarching in Unreal Engine 5.2
gam0022
0
200
IFSによるフラクタルのモデリング
gam0022
0
230
Transcendental Cube / グラフィックス解説
gam0022
0
120
redflash renderer / Raytracing Camp 7
gam0022
1
5.8k
Unity×レイマーチングによる映像制作の実践手法 / KLab Tech Meetup 4
gam0022
8
13k
レンダリング系セッション紹介 + Meetupのすすめ / Mercari GDC 2019
gam0022
2
2.8k
Hanamaru Renderer v2 for レイトレ合宿6
gam0022
2
5.6k
もっと綺麗で写実的な絵作りがしたい!レイマーチング向けのシェーディング技術
gam0022
5
20k
Other Decks in Technology
See All in Technology
Scaling Technical Excellence at 104: Evolution in AWS and Developer Empowerment
scotthsieh825
1
150
GoとアクターモデルでES+CQRSを実践! / proto_actor_es_cqrs
ytake
1
150
データ分析を支える技術 生成AI再入門
ishikawa_satoru
0
380
CEL(Common Expression Language)で書いた条件にマッチしたIAM Policyを見つける / iam-policy-finder
fujiwara3
0
710
さらに高品質・高速化を目指すAI時代のテスト設計支援と、めざす先 / AI Test Lab vol.1
shift_evolve
0
190
20240717_イケコパ代表Copilot_in_Teams会社でこう使ってます
ponponmikankan
2
430
コンテナ・K8s研修 - 前半 コンテナ基礎・ハンズオン【MIXI 24新卒技術研修】
mixi_engineers
PRO
0
170
成長期に歩みを止めないための創業期の開発文化形成
mayah
6
420
Docker互換のセキュアなコンテナ実行環境「Podman」超入門
devops_vtj
6
3.2k
AOAI Dev Day - Opening Session
yoshidashingo
2
440
How to Think Like a Performance Engineer
csswizardry
4
590
地理情報とAPIのトレンド
nagix
0
160
Featured
See All Featured
Ruby is Unlike a Banana
tanoku
96
10k
Easily Structure & Communicate Ideas using Wireframe
afnizarnur
189
16k
Music & Morning Musume
bryan
43
5.9k
Dealing with People You Can't Stand - Big Design 2015
cassininazir
360
22k
The Psychology of Web Performance [Beyond Tellerrand 2023]
tammyeverts
24
1.8k
Optimizing for Happiness
mojombo
373
69k
Done Done
chrislema
179
15k
実際に使うSQLの書き方 徹底解説 / pgcon21j-tutorial
soudai
149
45k
4 Signs Your Business is Dying
shpigford
178
21k
10 Git Anti Patterns You Should be Aware of
lemiorhan
652
58k
Fontdeck: Realign not Redesign
paulrobertlloyd
79
5.1k
Designing for humans not robots
tammielis
247
25k
Transcript
CPU RENDER tsukihi Sho Hosoda / @gam0022
None
UTVLJIJ͕Ͱ͖Δ·Ͱ 1
͓ “Rendering a beautiful image within 5 minutes.”
ϨΠϚʔνϯά×ύετϨʔγϯά ̑Ͳ͜Ζ͔ ̑࣌ؒͩͬͨ…
Ͳ͏ͬͯ ̑Ҏʹඳը͢Δʁ
४උ࣌ؒ εΩϧΓͳ͍ʜʜ
ઓུ ٖࣅදݱͰޡຐԽͦ͏ʂ
UTVLJIJͷಛ 2
⁞ϨΠͱγʔϯͷিಥఆϨΠϚʔνϯά ϥϯόʔτࣹʹΑΔݹయతͳγΣʔσΟϯά ٖࣅ"0ٖࣅίʔςΟΫεΛՃ্࣭͑ͯ
⁞ϨΠͱγʔϯͷিಥఆϨΠϚʔνϯά ϥϯόʔτࣹʹΑΔݹయతͳγΣʔσΟϯά ٖࣅ"0ٖࣅίʔςΟΫεΛՃ্࣭͑ͯ
w ڑؔʢӄؔʣͰදݱ͞Εͨγʔϯͱ ϨΠͱͷަΛۙతʹٻΊΔख๏ w ϑϥΫλϧਤܗڑؔͰఆٛͰ͖Δ w ࢀߟࢿྉʢ4MJEF4IBSFʣ γΣʔμ͚ͩͰੈքΛΔʂUISFFKTʹΑΔϨΠϚʔνϯά ϨΠϚʔνϯά
struct RaymarchingSphere : public RaymarchingObject { public: RaymarchingSphere(const Vec3 &position,
const double scale, const Color &emission, const Color &color, const ReflectionType reflection_type) : RaymarchingObject(position, scale, emission, color, reflection_type) { } double distanceFunction(const Vec3 &p) const { return length(p - position) - scale; } }; code ϨΠϚʔνϯάͷΦϒδΣΫτͷఆٛ 3BZNBSDIJOH0CKFDUΛܧঝͯ͠EJTUBODF'VODUJPOΛ࣮͢ΕΑ͍ઃܭ
const double mengerSpongeLoop(const Vec3& p) const { double d =
0.0; const double one_third = 1.0 / 3.0; for (int i = 0; i < 4; i++) { double k = pow(one_third, i); double kh = k * 0.5; d = std::max(d, -crossBar(mod(p + kh, k * 2.0) - kh, k * one_third)); } return d; } code ϝϯΨʔͷεϙϯδͷແݶ൛ͷڑؔ
⁞ϨΠͱγʔϯͷিಥఆϨΠϚʔνϯά ϥϯόʔτࣹʹΑΔݹయతͳγΣʔσΟϯά ٖࣅ"0ٖࣅίʔςΟΫεΛՃ্࣭͑ͯ
w ී௨ͷϥϯόʔτࣹ w ޫݯٿޫݯͷΈ w ڑͷٯଇʹΑΔޫͷݮਰ ݹయతͳγΣʔσΟϯά
⁞ϨΠͱγʔϯͷিಥఆϨΠϚʔνϯά ϥϯόʔτࣹʹΑΔݹయతͳγΣʔσΟϯά ٖࣅ"0ٖࣅίʔςΟΫεΛՃ্࣭͑ͯ
w ΦϯϥΠϯϨϯμϦϯάͷσϞγʔϯͰ ༻͍ΒΕΔख๏Ͱ"0ιϑτγϟυΛٖࣅදݱ w ίʔςΟΫεٖࣅදݱʢྗٕʣ ٖࣅදݱʹΑΔ্࣭
"0ແ "0༗ ݀ͷःณ෦͕҉͘ͳΔ ٖࣅ"0
"0ແ "0༗ ٖࣅͱ͍͑ɺޮՌൈ܈ ٖࣅ"0
inline double calcAO(const Vec3 pos, const Vec3 normal) { double
k = 1.0, occluded = 0.0; for (int i = 0; i < 5; i++) { double length = 1.5 * i; double distance = map(normal * length + pos); occluded += (length - distance) * k; k *= 0.3; } return clamp(1.0 - occluded, 0.0, 1.0); } code ٖࣅ"0
ٖࣅ"0 occluded += (length - distance) * k; ःณͳ͠ EJTUBODFMFOHUI
ःณ͋Γ EJTUBODFMFOHUI
ٖࣅίʔςΟΫε ٖࣅίʔςΟΫε ύετϨʔγϯάʹΑΔ ίʔςΟΫε
inline double calcCaustics(const Vec3 pos, const Vec3 light_dir, const double
distance) { for (int i = 0; i < 20; i++) { Vec3 p = pos + light_dir * depth_to_refraction; d_to_refraction = refraction_map(p); if (std::abs(distance - depth_to_refraction) < kEPS || depth_to_refraction > depth_to_other) break; if (std::abs(d_to_refraction) < kEPS) { Vec3 n = calcRefractionNormal(p); return 1.0 + pow(1.07 * std::max(dot(n, -light_dir), 0.0), 100.0); } depth_to_refraction += d_to_refraction; } return 1.0; } code ٖࣅίʔςΟΫε
ٖࣅίʔςΟΫε w EPU O MJHIU@EJS MJHIU@EJSিಥ͔ΒޫݯͷϕΫτϧ O۶ંΦϒδΣΫτͷ๏ઢ
w ୯७ͳੵ͕ͩɺٿମʹݶΓͦΕͬΆ͘ͳΔ w ಾͷͱ͍͏ఆ return 1.0 + pow(1.07 * std::max(dot(n, -light_dir), 0.0), 100.0);
1280x960px 4spp 37.24sec @Core i7-6700K 4core Λେ͖͘Լճͬͨʂ
ιʔείʔυ w IUUQTHJUIVCDPNHBNUTVLJIJ w FEVQUΛGPSL࣮ͯ͠ʢIPMF͞Μʹײँʂʣ w དྷͦ͜ύετϨΛ͍ͨ͠