zhangdoa

202601022015

zhangandhang@gmail.com (Hang Zhang) — Fri, 02 Jan 2026 20:15:00 +0000

教堂和精神病院相连被崇敬的神与被遗忘的人一墙之隔

202512161019

zhangandhang@gmail.com (Hang Zhang) — Tue, 16 Dec 2025 10:19:00 +0000

水静池清烦鱼红倚岸观客各自知

202406080104

zhangandhang@gmail.com (Hang Zhang) — Fri, 07 Jun 2024 23:04:34 +0000

Your linear distancing gives me exponential sadness And people call it a summer scratch How many are there truly can cry out About the forgotten of the last time when they lost hope

202406011526

zhangandhang@gmail.com (Hang Zhang) — Sat, 01 Jun 2024 13:26:40 +0000

Catching your breath isn't that easy There are argon and nitrogen in the air My lungs wouldn't catch them up anyway But the brain thinks "Why I think?" And then my heart breaks easily

202405241728

zhangandhang@gmail.com (Hang Zhang) — Fri, 24 May 2024 15:28:43 +0000

I'm a temporal miracle and a spatial boredom Chocked by the thickening man-breathing air A regular beat hit an irregular being's step And plausible claps cheering unsensational rhythms Hereby, I just made another Earth century

202405091917

zhangandhang@gmail.com (Hang Zhang) — Thu, 09 May 2024 17:17:07 +0000

A door is a type of privilege To keep you be yourself A Turk, a Frenchman, a Deutsch, whatsoever

202403312113

zhangandhang@gmail.com (Hang Zhang) — Sun, 31 Mar 2024 19:10:34 +0000

海鸟离我太远像风筝一样我离地面太近

202307091027

zhangandhang@gmail.com (Hang Zhang) — Sun, 09 Jul 2023 08:27:09 +0000

An overly-packed city contains an overly-packed me God residents in their hexagon castle

202303122259

zhangandhang@gmail.com (Hang Zhang) — Sun, 12 Mar 2023 22:00:01 +0000

When I will be calm There will be an ocean around me Mountains falling from the sky Melted snow flushes away unmeltable stones A point without size fluctuates in spacetime I will be calm But only after this moment

202208202126

zhangandhang@gmail.com (Hang Zhang) — Sat, 20 Aug 2022 19:26:16 +0000

The shorelines are just a bunch of illusions Only the wind seals away And I stay

Turning back towards where the lights were coming from I'm feeling unrest about what we've been doing Build up the civilization Cry for the uncertainties Destroy each other with greetings and hugs Jumping from one roof to another The flashing beacon shuts out loudly

That we need no bird here when summer is gone

202206040609

zhangandhang@gmail.com (Hang Zhang) — Sat, 04 Jun 2022 04:04:31 +0000

早晨六点钟表断裂因为物质聚集扭曲时空或者时空扭曲而物质聚集

钟表从墙上跌落除我之外无人在意

202112271827

zhangandhang@gmail.com (Hang Zhang) — Mon, 27 Dec 2021 17:27:43 +0000

If our sentiments are the same constant Then every metropolis is the same unpleasant As the streets lengthening Buildings heightening Everything intimate is being diluted

That's the reason why I'm here A snowman on the shoreline of Scania

如果我们的情绪是一样的恒常那么大都市都是一样的令人不快街道在变长建筑在变高一切亲密都在被稀释

这就是我在这儿的原因一个斯堪尼亚海岸线上的雪人

202112211038

zhangandhang@gmail.com (Hang Zhang) — Tue, 21 Dec 2021 09:38:26 +0000

I like Trelleborg, I think Or more specific A sloping street with 5-floor patio tenements along You can't behold that far The ocean The beach The creatures chasing each other underwater All of them are hidden behind the hump road

Thus everything is still mystic as promised

我喜欢特雷勒堡，我觉得或着更具体点一条沿途有 5 层露台公寓的倾斜街道你看不到那么远海洋沙滩水下互相追逐的生物全都藏在拱起的道路后面

于是一切依旧如同约定的那样神秘

202112130532

zhangandhang@gmail.com (Hang Zhang) — Mon, 13 Dec 2021 04:32:02 +0000

远到无限近的树林落光了叶子候鸟就用羽毛将它们淹没酣睡的人不知满身是雪

The woods as far away as infinitely near have fallen out of their leaves Then migratory birds submerge them with their feathers An asleep person doesn’t know if he has been snow-covered

202112031600

zhangandhang@gmail.com (Hang Zhang) — Fri, 03 Dec 2021 15:00:12 +0000

There is no start point of an arrival And there is no endpoint of a departure The loop is over and over again We have been gazing at each other for a long time

到达没有起点出发没有终点循环一遍又一遍我们已经对视了很久

202111131428

zhangandhang@gmail.com (Hang Zhang) — Sat, 13 Nov 2021 13:48:06 +0000

The only moment to know I'm in a dream Is from the impact of the reality Everything is withering Except for the dense mist

唯一知晓我身处梦中的时刻是来自现实的冲击一切事物都在凋零除了雾气浓密

202110301811

zhangandhang@gmail.com (Hang Zhang) — Sat, 30 Oct 2021 16:11:12 +0000

火车不等晚来的乘客夜晚也不等余晖抹去一切都按部就班滚滚向前而我已无心幻想

The train won't wait for the late passenger The night won't wait for the wiping away of the afterglow Everything rolling forward step by step And I have had no mood of fantasizing

202110161011

zhangandhang@gmail.com (Hang Zhang) — Sat, 16 Oct 2021 08:11:00 +0000

A man crafted a mirror Reflecting himself spotlessly Then he crashed it

Splash

一个人做了面镜子完美地反射出他自己而后他打碎它

遍地碎片

202110101213

zhangandhang@gmail.com (Hang Zhang) — Sun, 10 Oct 2021 10:13:14 +0000

黄昏不可预知如同海鸟背离湾岸滑行人与人此消彼长

无谓的想象止步在烟尘中等待下一轮迷失从头开始

Dusk is unpredictable Like a seabird gliding away from the coast People and people Fading and emerging

The meaningless imagination stops in the haze Waiting for the next round of getting lost to start over

202109261534

zhangandhang@gmail.com (Hang Zhang) — Sun, 26 Sep 2021 13:34:59 +0000

Who dropped the feather outside of my door?

是谁把羽毛落在我门外？

202109250942

zhangandhang@gmail.com (Hang Zhang) — Sat, 25 Sep 2021 07:42:55 +0000

God might be a mortal too Some days he's just not content enough So he decided to smoke a lot And it becomes cloudy

神或许也是凡人总有不顺心的时候于是他抽很多烟而后天气变得多云

202109121143

zhangandhang@gmail.com (Hang Zhang) — Sun, 12 Sep 2021 09:43:46 +0000

We chase the transition between seasons To name those discrete feelings Dried seaweeds lying over reefs Some of us enjoy dizzying

Sixteen years ago I walked behind the river embankment Prosed a brag to the unfallen leaves And now they say come back my friend Your fragile heart we preserved well for long And it's still not too late

Then we forge an unrealistic morning Silence

我们追逐季节间的过渡用以命名那些离散的感觉躺在礁石上的干海藻我们中的一些人喜欢头晕目眩

十六年前我走在河堤后面向不落的树叶吹嘘现在他们说回来吧我的朋友你脆弱的心我们保存了很久现在还不算晚

然后我们伪造一个不切实际的早晨安静

202109110943

zhangandhang@gmail.com (Hang Zhang) — Sat, 11 Sep 2021 07:43:55 +0000

The air is the clouds The clouds are the rain The rain flows over the peninsula Across the straight Dropping over our heads

I breathe the air You breathe the air We will get wet from the rain We will But let's forgive it As my late farewell

空气是云云是雨雨水流过半岛穿过海峡落在我们头上

我呼吸空气你呼吸空气我们会被雨淋湿我们会但让我们原谅它作为我迟到的告别

202109082045

zhangandhang@gmail.com (Hang Zhang) — Wed, 08 Sep 2021 18:45:55 +0000

We are all bound by gravity By the drips on the lake By swans and rabbits By sand roads By bronze statues By sports shoes By hate of cloudy day By noises from helicopters By strangers' mumbling By silhouettes of pines By cuddles of lovers

We are all bound by nothing charming But ourselves

我们都被引力束缚被湖上的水滴被天鹅和兔子被沙石路被青铜雕像被运动鞋被对阴天的厌恶被直升机的噪音被陌生人的喃喃自语被松树的剪影被恋人的拥抱

我们都被毫无优雅之处的事物束缚除了我们自己

202109081431

zhangandhang@gmail.com (Hang Zhang) — Wed, 08 Sep 2021 12:31:52 +0000

My musical souls are waiting for me To pick them up at the harbour of Rotterdam But I'm not that eager

I know One day we will unite again I don't know One day we will separate again

They are waiting for the lost love On this vast Eurasian Plate

我的音乐灵魂在等着我在鹿特丹港接他们但我没那么急迫

我知道总有一天我们会再次相聚我不知道总有一天我们会再次分开

他们在等待失去的爱在这广阔的欧亚板块上

202108222118

zhangandhang@gmail.com (Hang Zhang) — Sun, 22 Aug 2021 19:18:14 +0000

夜晚总是不期而至我却无法再回到来时的地方所有曾经高大的砖石棱角缓慢腐朽的门柱都淹没在徒劳的呼喊中

你可记得那些期待秋天降临时我们背弃的谎言一句接一句他们被哀痛的余辉无名地填埋在沥青之下

The night always comes unexpectedly But I can't return to the place where I came from Those ever elevated masonries Edges and corners Slowly decaying gateposts All submerged into futile shouts

Do you remember When awaiting the arrival of autumn Those lies betrayed by us Sentence after sentence By the afterglow of grief They are landfilled namelessly under the asphalt

202108211711

zhangandhang@gmail.com (Hang Zhang) — Sat, 21 Aug 2021 15:11:53 +0000

所有不能归港的船沉没在各自的迷途中身染同一种幽暗的蓝

All the ships that cannot return to harbour Sinking in their respective lost paths Dyed in the same gloomy blue

202108201303

zhangandhang@gmail.com (Hang Zhang) — Fri, 20 Aug 2021 11:05:57 +0000

形体是多余的而灵魂也不能永久我们就在这糟乱的世界里随意会面并时刻准备着必然的消逝

The body is superfluous And the soul also is not perpetual We meet arbitrarily in this chaotic world And constantly prepare for the eventual waning

202108181405

zhangandhang@gmail.com (Hang Zhang) — Wed, 18 Aug 2021 12:05:58 +0000

If there's a god Then I'll stop screaming For my uncertain predictions One day they'll join us To experience this long recovery

Do you ever know when will the rain stop?

如果有神那我会停止嘶叫为我不确定的预言总有一天他们将要加入我们体验这漫长的复苏

你可曾知道何时雨停？

202108151659

zhangandhang@gmail.com (Hang Zhang) — Sun, 15 Aug 2021 15:01:01 +0000

I'm a messenger from the North Came here to deliver the meaninglessness Until the moment the receiver died I'll never return to my aurora

我是一位来自北方的信使到这里来递送无意义直到接收者死去前我将永不回到我的极光之下

202108141836

zhangandhang@gmail.com (Hang Zhang) — Sat, 14 Aug 2021 16:36:08 +0000

I arrived in this city on a cloudy afternoon And I rushed to the sea to escape from But the sky is as grey as my heart Both of them are out of my scope now

Don't trap me in this suffocation I'm loveless I'm breathless

在一个多云的下午我抵达这座城市而后我冲向海边试图逃离但天空和我的心一样铅灰它们都不受我控制了

不要把我陷在这窒息中我无爱我气喘吁吁

202108041549

zhangandhang@gmail.com (Hang Zhang) — Wed, 04 Aug 2021 13:49:57 +0000

We are dominated by the weather Mentally and physically And if I close my eyes now The last night will start Farewell then

我们被天气所困身心同是如果我此刻闭上双眼最后一夜就要开始那么再见吧

202107282345

zhangandhang@gmail.com (Hang Zhang) — Wed, 28 Jul 2021 21:45:14 +0000

I had a one-night stand with this city Tomorrow morning we'll depart Towards two opposite directions I'll keep running She'll keep staying We'd never meet again

我和这座城市共度亲密一夜明天早晨我们要各自出发向着两个相反方向我继续奔跑她继续停留我们将再也不见

202107242301

zhangandhang@gmail.com (Hang Zhang) — Sat, 24 Jul 2021 21:01:35 +0000

He cries unstoppably And cars passing like a stream I'm sitting not that far But incapable of wiping the tears away

I won't get drunk Until I would meet you It's a silent rebellion In order to get over this repetitive loudness

他无法停止哭泣车流如流我坐在不远处但无能为力拭去那眼泪

我不会醉直到遇见你这是场无声反叛用以克服反复的噪响

202107212240

zhangandhang@gmail.com (Hang Zhang) — Wed, 21 Jul 2021 20:40:47 +0000

Now I fall onto the earth Thick clouds pressure me When will I lose my signal To become the last humankind standing still

Spring dries Winds stop Fire ignites I die

An echo longing for love never resilient A million drops of rain pouring over Öresund

此刻我坠落地面稠密云层压迫着我何时我将失去信号成为最后一个人类矗立

春天干涸风停火焰点燃我死去

觊觎爱的回声永不回弹百万滴雨倾泻在厄勒海峡

202107172315

zhangandhang@gmail.com (Hang Zhang) — Sat, 17 Jul 2021 21:15:52 +0000

I saw you throw a knife into the moon I saw it stabbed high above the stratus Don't keep lying 'cause I see it Even there are only two riders at the cross

I catch you under a green light Where all policemen asleep in the midnight of Saturday Don't just drag me into your world I won't disturb though but I also don't have patience

I don't want to flirt with the universe Until I forget these circles swallowing me To a moment I'll survive Until then just let me go

我看见你向月亮扔出一把匕首我看见它嵌在高于云层之上的地方不要再撒谎因为我看得见哪怕十字路口只有两个骑车人

我在绿灯下抓获你在所有警察睡去的周六午夜不要把我随便拽入你的世界哪怕我不会叨扰但我也没有耐心

我不想和宇宙调情直到忘记那些吞噬我的圈终有一刻我将幸存直到那时就让我走吧

202107162021

zhangandhang@gmail.com (Hang Zhang) — Fri, 16 Jul 2021 18:21:14 +0000

The sky pours over its hue onto the sea But it never changes what the sea means to be Under waves and reflection There's a mysterious realm Where I patch my torn heart

The illumination of that faraway Swinging through the airflow Two wings slowly pass by Divided the ocean blue into fragments

I want a pearl I want a diamond Not to make a proposal to my beloved one Rather make it shiny enough inside my coffin But please just don't bury me Mr Poseidon

天空倾泻色蕴在海面上却不能改写海的本意波涛与反射光下有一处领域神秘在那里我修补我撕裂的心

遥远的光晕随着气流晃动缓慢划过的两翼将海蓝色切成碎片

我想要一颗珍珠我想要一颗钻石不为向我所爱承诺而期许其在我棺中闪耀但先不要埋葬我波塞冬先生

202107142350

zhangandhang@gmail.com (Hang Zhang) — Wed, 14 Jul 2021 21:50:20 +0000

Streets of the town mingle like veins I'm a virus hiding through A heart trapped in the forest I guess that's what means love

Now I escaped from a skyline But again fall into the same situation Surrounded by millions Whom I've never known

Take away sunset and the overall vague I just want to embrace my own peace and noise She whispers like stranded But I hear clearly every word

Let's jump into that foggy morning To breathe heavily as it would never appear again As it would never care about you and me As it would never bother by you and me

Let's redo all our blindness To recall whoever has been participated As it would never care about you and me As it would never bother by you and me

A butterfly is locked between the glass and the curtain A mirage is locked between the sky and the horizon I'm locked between reality and the imagination

城市街道如静脉般交织我是一个隐藏其中的病毒一颗陷入森林的心我猜那是爱所意味

此刻我逃离了一个天际线但又落入了同样境地被百万人群所围绕其中我无人相识

拿走日落和所有隐约我只想拥抱我自己的宁静与喧嚣她如搁浅般细语我却听得字字清晰

让我们跳入这多雾的清晨用力呼吸就像它不再来临一样它从未在乎你我它从未打扰你我

让我们重新盲目去记起那些已然其中它从未在乎你我它从未打扰你我

一只蝴蝶被锁在玻璃与窗帘间一个幻景被锁在天空与地平线间我被锁在现实与空想间

202105260324

zhangandhang@gmail.com (Hang Zhang) — Wed, 26 May 2021 01:24:13 +0000

党要杀人国法不肯于是井下的人们相继息声

202105060259

zhangandhang@gmail.com (Hang Zhang) — Wed, 05 May 2021 18:54:44 +0000

一个人要足够远离故乡才能学会如何小心翼翼地念旧

A fellow must be far away enough from home To eventually learn how to nostalgia cautiously

202104041133

zhangandhang@gmail.com (Hang Zhang) — Sun, 04 Apr 2021 03:28:28 +0000

世界不因我渺小而宏大一切漫长的过程都将转瞬而逝

The universe is not grandeur by means of my insignificant All the long processes would be ultimately momentary

202103300125

zhangandhang@gmail.com (Hang Zhang) — Mon, 29 Mar 2021 17:20:56 +0000

我要放弃庸碌庄重地回忆我的过去在每一个日出与日落及之间的缝隙里我所期待过生命该有的样子

I would abandon mediocrity / solemnly recall my bygone In every sunrise and sunset and the gap in between What I have expected life to be like

Rendering analysis - Cyberpunk 2077

zhangandhang@gmail.com (Hang Zhang) — Sat, 12 Dec 2020 10:30:00 +0000

(Spoilers-free post!)

Quite a lot of people I know inside or outside this industry are playing the long-waited “gargantuan maelstrom” now. After a couple few hours immersed around the stunning view (and bugs of course) in the Night City, I was wondering how one frame is rendered in Cyberpunk 2077 (every graphic programmer’s instincts!). So I opened RenderDoc and PIX, luckily REDengine didn’t behave unfriendly like some other triple-that (yes Watch Dogs 2 I mean you), I got a frame capture without any problems. (Disclaimer: I’m pretty sure later others like Alain Galvan, Anton Schreiner, Adrian Courrèges or even guys from CDPR would bring us a more detailed and accurate demonstration about how things works, I’m just chilling out around and welcome for any discussions and corrections! )

202010270748

zhangandhang@gmail.com (Hang Zhang) — Mon, 26 Oct 2020 23:48:42 +0000

烟囱与云交错看不清风的去向无头的桥墩依次排开在田野里缓慢生长

The chimney and the clouds intertwined / can't sight the whereabouts of the wind clearly

The headless piers line up one after the other / grow unhurriedly in the field

202010090104

zhangandhang@gmail.com (Hang Zhang) — Thu, 08 Oct 2020 17:04:26 +0000

我听过的每一首音乐都是我生命倒计时针最清晰的回响

Every music I have ever listened to Are all the clearest reverberation of my life's countdown tick

How expensive it is to create your own AAA-level game audio solution?

zhangandhang@gmail.com (Hang Zhang) — Wed, 06 May 2020 01:15:00 +0000

Don’t be greedy, unless it’s really cheap

I’ve been in the game industry for almost 5 years since I broke up with traditional music post-production, and the official direction which I spend every 8*5 (of course, sometimes more) hours a week and get paid is not surprisingly, game audio. It doesn’t matter how you’re familiar with this domain, more or less you’d hear about some names like FMOD or Wwise recent years, even you’re just coming from a typical gamer’s point of view. Nowadays anybody who struggles to pick up a sound acceleration card would be called a perfectionist, a rational mind would just spend some hundreds or thousands whatever-your-local-currency-it-is to get some decent speakers or headphones, and that’s ALL for gaming.

Reflection in C++... could we nail it now?

zhangandhang@gmail.com (Hang Zhang) — Wed, 25 Dec 2019 17:00:00 +0000

Maybe you’ve seen multiple times the symbol of Ouroboros in different movies and games that about a fancy snake who biting its own tail, despite whether it’s painful (just hope those serpents would have a better control when biting themselves!), these kind of self-dependent problems emerging often when we started to consider one of the most desired features in C++ — how could we inspect the information of the language itself in runtime?

Physically Based Rendering - Lighting

zhangandhang@gmail.com (Hang Zhang) — Sat, 07 Dec 2019 18:25:00 +0000

As soon as we modeled the surface’s physical properties that covered a certain range of material in real life, we would need to emit light onto them, in order to finally get the outcome radiance from the surface. If you take a look back at the rendering equation, the outcome radiance is just an integral of the income radiance over the semi-sphere around the normal. This gives us a fundamental assumption that with a brutal algorithm such as path tracing we could get a numerical solution for the problem. We could just model the geometry shape of the light source, then emit single light through all the possible directions and evaluate whether they hit a surface, until the overall energy diminished to a certain threshold. But in real-time rendering, the computational source currently we had in hand won’t be sufficient for such cost of the algorithm. We need to find the analytical replacement of the integral, or at least some cheaper numerical integrals.

Walking through the heap properties in DirectX 12

zhangandhang@gmail.com (Hang Zhang) — Wed, 18 Sep 2019 14:00:00 +0000

Indifferent to the difference?

Back to the old times, you never worried about how the physical memory would be allocated when you’re dealing with OpenGL and DirectX 11, GPU and the video memory were hidden behind the driver so well that you might even not realize they were there. Nowadays we get Vulkan and DirectX 12 (of course Metal, but…nevermind), that the “zero driver-overhead” slogan (not “Make XXX Great Again” sadly) become the reality on desktop platforms. And “ohh I don’t know that we need to manually handle the synchronization” or “ohh why I can’t directly bind that resources” and so on and on. Of course, the new generation (already not new actually) graphic API is not for casual usages, your hands get dirtier and your head gets more drizzling, while there are still a bunch of debugging layer warning and error messages keeping pop up. Long story in short, if you want something pretty and simple, turn around and rush to modern OpenGL (4.3+) or DirectX 11 and happy coding; if you want something pretty and fast, then stay with me a while and let’s see what’s going on with the new D3D12 memory model.

So many descriptors in Vulkan

zhangandhang@gmail.com (Hang Zhang) — Sun, 21 Apr 2019 10:53:00 +0000

Brainwash is always somewhere

It’s really a mess when I started to port my engine to Vulkan, there are too many new data types that mapped to those came-from-nowhere concepts, which I don’t need to take care about previously. But luckily those concepts are well designed and once after you understand what they are, every pain you occurred would just disappear.

The new generation graphics APIs all transport the responsibility of CPU-GPU communication to the user more or less explicitly, now if you want to ask GPU to do something for you, there won’t be any already defined API, which you just need to feed in some data from your CPU and memory then all the others would be handled by “somebody”.

Welding (THE latest) C++ to Metal, and macOS

zhangandhang@gmail.com (Hang Zhang) — Wed, 17 Apr 2019 19:07:00 +0000

For what?

I’ve previously deployed my game engine to macOS successfully with GLFW and macOS’s “vanilla” version OpenGL 4.1 library, everything was pretty smooth and sweet (and of course naive) at that time, and every few weeks I would port the latest updates from Windows side to macOS in an accumulated way. But as I started to utilize some C++17 new features, yep I mean <filesystem>, which Apple still didn’t give us a certain answer (I’ve heard that there is something new with Apple Clang in the Xcode 10.2 update, that somehow <experimental/filesystem> is magically appearing, but later I’ll talk about it separately), and targeting OpenGL version to the almost latest 4.5 for quite few new features, I have to deprecate macOS for some moments because, why not?

201902101158

zhangandhang@gmail.com (Hang Zhang) — Sat, 19 Jan 2019 05:31:38 +0000

我们在夏天轻浮冬天庸俗积雪融化之后就失去了跌倒的烦恼一些声音径直穿过山丘与楼群被栖居在其中的生物捕获他们撕扯着推搡着彼此并避让着各自的痛楚与委屈

那些运动着的物体正在响应远方的呼喊他们此起彼伏的晃动正在建构一片风平浪静的海洋

我不清楚该在什么时候纵身一跃成为溶于其中的一个不可名状

We are frivolous in summer / vulgar in winter After the snow melted down / then we lost the annoyance of falling Some sounds move across the mountain and the building directly Captured by the creatures inhabited inside They are tearing and pushing each other And avoiding each other's pain and wronged

Those objects in motion Are resonating the call faraway Their one after another's swaying Constructing a tranquil ocean

I'm not sure when should I jump inside Become one of the unspoken dissolved in it

Normal and normal mapping

zhangandhang@gmail.com (Hang Zhang) — Sun, 18 Nov 2018 01:34:00 +0000

A (not) tedium work

Recently I started to port my project to DirectX 11, and it has a lot of interesting differences with OpenGL such like the coordinates and matrix convention, stronger type safety requirement, better shader resources management (I didn’t try OpenGL’s SSBO yet but the constant buffer is really easier to wrap into an elegant layer) and etc. One thing I stuck a little is the normal mapping there since I used the on-the-fly tangent generation in GLSL, it quite confuses me at first when I rewrote it in HLSL.

201810272345

zhangandhang@gmail.com (Hang Zhang) — Sat, 27 Oct 2018 15:25:25 +0000

在一张冰冷的椅子上我写下无人阅读的诗歌期待风闭起眼睛高声朗诵

那些将要呼啸而过的词语彼此穿插顺着太阳背阴顽强地朝西行进

他们会在你的夜晚结束之前到达部分消逝于你的梦境边缘只给你留下一个半睡半醒的疑虑

On an ice-cold chair I wrote down poems which nobody would read Expect wind recites loudly with closing eyes

Those words which will whiz by Interweave with each other Along the dark side of the sun Move towards west tenaciously

They would arrive before the end of your night Some disappear at the edge of your dream Leave you a half awake half asleep doubt

201810271705

zhangandhang@gmail.com (Hang Zhang) — Sat, 27 Oct 2018 08:58:24 +0000

我被迫接收一种重复的节奏每一个小节大致相似差别体现在一些人为失误上然而我不能再来一次

我试图保持一种友善的距离不要听清每一个音也不要错过每一次停顿但是总会忘掉一些间隔

于是我费力地追赶将一切理解都变成误解

I have to receive a kind of repeated rhythm Each bar looks almost similar The difference is expressed by some artificial mistakes But I can't do it again

I try to maintain a kind of friendly distance Don't listen clearly every note And don't miss each pause too But would always forget some interval

Then I chase laboriously Turn all the comprehension to miscomprehension

201810041726

zhangandhang@gmail.com (Hang Zhang) — Thu, 04 Oct 2018 14:27:00 +0000

夏天和冬天之间缺少一种填补空气与地面之间缺少一种缓冲我的双脚漫过雕像浸湿最后一件外套他们背对着风往前挪动看见我干涸的虹膜他们不知道我想念着你想念着刺穿温度的碰触我就在这长椅上逐渐失聪所有音符落回天空中耀眼的云层

There is lacking a kind of fill up between summer and winter There is lacking a kind of buffer between air and ground My feet inundate the statue Wet the last coat They're moving forward opposite with the wind Seeing my dry iris They don't know I'm missing you Longing for the touch piercing the temperature I'm on this bench losing hearing gradually All musical notes falling back to the shinning clouds in the sky

201810031936

zhangandhang@gmail.com (Hang Zhang) — Wed, 03 Oct 2018 16:36:06 +0000

互不相干的人群拥挤在一起推搡着彼此有一些共同的路程重叠

一盏青白色的灯埋没在窗与窗的间隔中试图冲淡楼宇遮掩地面的褐黄

风抖散盘错在一起的树枝撕下几片未枯的叶我将离开这个秋天和其他人一起将它遗忘

Irrelevant people crowded together Pushing each other Some common journeys overlapped

A pale blue lamp Buried between the gap of window and window Trying to dilute the brown-yellow from the covering of buildings to the ground

Wind shakes and scatters the coiling branches Tearing down some unwithered leaves I am going to leave this autumn And forget it with other folks

201810010046

zhangandhang@gmail.com (Hang Zhang) — Sun, 30 Sep 2018 21:13:52 +0000

九月的最后一个夜晚我看见一些星星在赤道以北四千英里的天空中各自保持沉默

那些难以丈量的距离最终抹去它们的颜色时间遮掩了所有差异只剩下一个个无穷小的亮点

在长椅上熟睡在街灯下独行两个失去故乡的人各自保持清醒

而不远处有一种思念正朝我飞奔过来

The last night of September I saw some stars In the sky four thousand miles northern away from the equatorial Keep silence separately

Those unmeasurable distances Erase their colour finally Time occludes all the differences Only infinitesimal light spots left one by one

Sleeping soundly on the bench Walking alone under the streetlamp Two folks who lost their homeland Keep sober separately

But there is a kind of yearning not far from here Rushing to me now

201808302121

zhangandhang@gmail.com (Hang Zhang) — Thu, 30 Aug 2018 13:21:45 +0000

我们什么都不能说窗户外边的风时刻偷听着它们通晓这地球上所有存在和消失了的语言也明白那些藏在故事和歌里的隐喻

我们什么都不能看头顶的太阳太刺眼了红的绿的花儿和草迟早都要被镀上一层洗不掉的金黄色

我们也不能大口呼吸把甘甜的空气让给老人和孩子们吧美好总有到头的时候在此之前谁能安心睡个好觉呢

We can't say anything The wind outside the window eavesdrops every second They know all the existed or disappeared languages on this earth And understand the metaphors hidden beneath the stories and songs

We can't see anything The sun above our head is too dazzling The flowers and grasses in red and green Would be plated with an unlaunderable golden yellow sooner or later

We can't breathe loudly either Let's leave the sweet air to the senior and young Happiness would eventually end Who could have a peaceful sleep before this?

Physically Based Rendering - Material

zhangandhang@gmail.com (Hang Zhang) — Sun, 12 Aug 2018 17:36:00 +0000

I learned the shading magic like how the most of others did, from a classic Blinn-Phong model to some more complex models like Cook-Torrance model, but the understanding would always be confined around the common practices shaped by our slow speed computer, and our eager desires for the more realistic results. With these compensations, tricks, and hacks we may achieve lots of cool and amazing stuff at first, but if we don’t have a clear bird’s-eye view (for example people like me who is always suffering among the formulae), then we would lose ourselves inside just shader code and strange artifacts often and can’t find the solutions without painful testing and doubting.

Row-Major or Column-Major? Some notes about matrix convention

zhangandhang@gmail.com (Hang Zhang) — Sat, 24 Mar 2018 20:14:00 +0000

The mathematical conventions

Generally speaking, when we want to “render” something to the screen, it means we need to calculate the “color” of each pixel on the refreshing LCD in front of us, and then ask some hardware to fulfill those pixels with the color we specified. But typically what we have in our hard disk are just some mesh and texture data files, which only contain some basic information about the object we want to render, like how many vertexes they have, where the vertex’s position is in their own coordinate space, what the “color” of that vertex should look like and etc.. So, how to manipulate them until we get the final color that we could output to the screen’s pixel? Of course, we need some math, I assume you had already learned some basic linear algebra in theory and thus could understand what a matrix it is (or you could reference Wikipedia here for some sorts of overview).

Space, coordinates, and the magic Quaternion

zhangandhang@gmail.com (Hang Zhang) — Wed, 13 Dec 2017 10:24:00 +0000

Where is where?

In our daily life, when someone asked for the help about how to reach the place they want to go, we would answer them like “walk toward north and turn left at the first corner”, and here we use some kind of coordinate system to represent the relativity of position in the world we are. And in our virtual world inside the computer, it would be awesome if we could use the same north and left concepts. But since the computer only knows 0 and 1, there are lots of difficulties to make a north really north.

201711111726

zhangandhang@gmail.com (Hang Zhang) — Sat, 11 Nov 2017 09:26:00 +0000

我热爱黄昏胜过黎明逝去胜过新生随机穿行在道路之间遵从信号灯的指示调转方向

I love dusk more than dawn Death more than birth Pace across the roads randomly Steer under the directive of the semaphores

201711051851

zhangandhang@gmail.com (Hang Zhang) — Sun, 05 Nov 2017 09:51:18 +0000

睡眠是死亡的预演人们互相竞食

Sleeping is the rehearsal of death People cannibalize each other

201710241744

zhangandhang@gmail.com (Hang Zhang) — Tue, 24 Oct 2017 09:44:19 +0000

一切时钟都在指示过去而现在永远不会到来

Every clock just indicated the past And present never arrives

201705102335

zhangandhang@gmail.com (Hang Zhang) — Wed, 10 May 2017 15:35:51 +0000

光与影塑造一切我外在的世界梦的间隔里勉强成为自己

徘徊在人为割裂的昼夜试图学会认知时间

否则我将不再沉迷否则我将不再清醒

Light and shadow shape everything / in my outer world In the interval between dreams / I barely become myself

Wandering in the artificially divided day and night Trying to learn to cognize time

Otherwise I won't be addicted Otherwise I won't be sober

201705090502

zhangandhang@gmail.com (Hang Zhang) — Mon, 08 May 2017 21:02:37 +0000

从帕米尔高原上一千吨化不开的积雪到长江入海口雾气遮掩的炊烟我的每一个夜晚都是斑斓的应验铁丝网围起一圈又一圈

低沉哀婉的汽笛声烧红了眼睛城池一角虚度光阴的人们拥抱彼此我从一口古井里打上来落错了季节的一片叶亲吻三十年日复一日的虚荣

当树木翻山越岭侵袭我的家园时负隅顽抗的风沙再也不能埋没牛羊那些用力抬头俯瞰明月的阳关曲在嗓音嘹亮的骤雨之后落入人间

From the thousand tons of unmeltable snow on the Pamirs To the chimneys smoke concealed by the mist at the estuary of the Yangtze River Every night of me is a colourful fulfilment The barbed wire encircles one circle after another

The muffled and mournful ship horn / burned the eyes At a corner of the town / folks who are squandering their time hug each other I fetched a leaf of the wrong season from an ancient well To kiss the thirty years day after day vanity

When the trees invaded over the hill and mountains my homeland The recalcitrant wind and sand are unable to bury cattle and sheep anymore

Those farewell songs which are vigorously raising their heads to overlook the bright moon

Falling into the earth after a loud voice downpour

201705050909

zhangandhang@gmail.com (Hang Zhang) — Fri, 05 May 2017 01:09:18 +0000

地上有一把断裂的钥匙潮湿地像快要落下的雨一样谁都不会把它捡起来人们忙着撑伞躲避终要到来的立夏以及之后二十三个不一样的节气

There is a fractured key on the ground Wet like the rain about to fall No one will pick it up People are busy unfurling umbrellas To shelter from the eventually coming Lixia And the next twenty-three different solar terms

201704301248

zhangandhang@gmail.com (Hang Zhang) — Sun, 30 Apr 2017 04:48:54 +0000

早晨九点有一只鸽子被困在楼道里不知道什么是窗户我就把他赶走赶到天空中去

At 9 o'clock in the morning / there was a dove trapped in the corridor Didn't know what the window is Then I just drove him away / drove him into the sky

201703041431

zhangandhang@gmail.com (Hang Zhang) — Sat, 04 Mar 2017 06:31:40 +0000

今天我见证了一棵柳树发出新芽而柳树亦无声注视着我我们并不相识从前是现在是未来也是我们不分彼此从前是现在是未来也是

Today / I witnessed a new sprout from a willow tree And the willow stared at me silently too We don’t know each other / in the past / in the current / and in the future

We don’t distinguish between each other / in the past / in the current / and in the future

201703041408

zhangandhang@gmail.com (Hang Zhang) — Sat, 04 Mar 2017 06:08:35 +0000

我怀念我家乡荒凉的河岸人们蒙起双眼把各自的忧虑倾倒在河水里于是你看那些鱼游得多绝望

I miss the desolate riverbank in my hometown People blindfolded / pour their own apprehension into the river Therefore you could see how hopeless those fishes swimming

201703041145

zhangandhang@gmail.com (Hang Zhang) — Sat, 04 Mar 2017 03:45:54 +0000

我怕天晴时的雾那些远处灰青色的建筑随着热气流摇摆

过去几个同样干瘪的春天眼睛里风沙没有消散过而我放归北方的鸟儿们也从来没有回过信

I'm afraid of the mist on a sunny day Those distant powder blue buildings Swing with a hot stream

In the past quite a few same shrivelled springs The sands in my eyes never dissipated And the birds I freed to the North Never wrote a letter back to me

201702230443

zhangandhang@gmail.com (Hang Zhang) — Wed, 22 Feb 2017 20:43:21 +0000

我在前一夜赊了岁月的账有几个瞬间无所事事所以注定此刻失眠

而轰鸣的机器试图掩盖名为春天的谎言

窗外的树矗立在窗外窗内有人泣不成声

I bought on credit from the last night's time There were some moments with nothing to do So I destined to be insomnia now

And the roar machines try to cover The lie named spring

The trees outside the window stand outside the window Someone chokes with sobs inside the window

201702120136

zhangandhang@gmail.com (Hang Zhang) — Sat, 11 Feb 2017 17:36:24 +0000

我快要忘记日出日落时天空的颜色只有勤劳的人们看得见那些衰弱黯淡消散在大气中的光而我只在乎那片隔离你我的海

I'm about to forget that when at sunrise and sunset / the color of the sky

Only industrious people can see / those weak / dim / and dissipated light in the atmosphere

And I only care about the ocean that separates you and me

201701281311

zhangandhang@gmail.com (Hang Zhang) — Sat, 28 Jan 2017 05:11:00 +0000

午夜来临你静卧在星光下此刻完全地背对太阳我正启程前往阳光普照的地方

北方冰山融解成河的时候你睡去而我醒着峡谷岩石风化为沙的时候我睡去而你醒着时钟停止时时间不停分针秒针记录某个失去的瞬间而我们都已睡去时钟运转帆船出海桨叶划出泡沫而我们双眼清澈

Midnight approaches / you are lying quiescently under the starlight / completely back against the sun now

I'm setting off for a place where the sun shines over

When the northern iceberg melted to the river / you fell asleep / and I was awake

When the rock of the canyon is weathered to sand / I fell asleep / and you are awake

When the clock stops / the time keeps on / the minute and second hands record a lost moment and we are all asleep

The clock is spinning and the sailboat goes out to sea / the paddles rows foam and our eyes are limpid

201701251344

zhangandhang@gmail.com (Hang Zhang) — Wed, 25 Jan 2017 05:44:20 +0000

不可以离浪太近海水会沾湿鞋子也不可以离浪太远那就看不到海了

我在海岸边走着曲折蜿蜒的路

一个孩子说如果没有风的话浪也不会来的另一个孩子说如果没有我风也不是风

拾贝人把镐插进沙子里礁石上响起一片回声

Don’t get too close to the waves / the seawater will wet your shoes Don’t get too far away from the waves too / thus you won’t see the ocean

I am on the coast / walking a winding road

One child said / if there was no wind / the waves shall not come Another child said / that if there was no me / the wind shall not be the wind

The shell picker inserted the pickaxe into the sand / and echoes resonance over the reef

201701241425

zhangandhang@gmail.com (Hang Zhang) — Tue, 24 Jan 2017 06:25:49 +0000

我厌倦白昼手编渔网的人们坐在船上风平浪静我也厌倦平原一切不安与惶恐失望都发生在平原上

终幕灯光亮起之前全世界的电影院都彼此相连一块银幕流泪时另一块银幕上生死双方才初次见面

人们回家躲避冬日暖阳的拥抱躲避看不见的风与快出芽的野草那些鱼和推车收起的帆早已习惯了岸近乎搁浅的窒息感

我穿过灯光黯淡的隧道快步走上高桥试图追赶夜晚来临时抹去的海与天空的分界线

I’m tired of the daytime / folks who are weaving fishing nets by hand sit on the boat dispassionately

I'm tired of the plains too / all the unease and fear / and disappointment all happen on the plains

Before the illumination of the final act lights up / cinemas around the world are all connected to each other

When tears dropping on one screen On another one / the alive and the dead just encounter with each other

People return home to evade from the hug of the warm winter sun / to evade from the unseen wind and almost-budding weed / those fishes and carts / furled sail / have already been accustomed to the suffocation of the nearly-stranded shore

I overgo through the dimmed tunnel / pacing fast onto the tall bridge / trying to chase that temporarily wiped when night comes / the dividing line of the sea and the sky

201610031720

zhangandhang@gmail.com (Hang Zhang) — Mon, 03 Oct 2016 09:20:27 +0000

在湖边人们大笑天空中没有一只鸟

Beside the lake People laugh clamorously There's no bird in the sky

201601151743

zhangandhang@gmail.com (Hang Zhang) — Fri, 15 Jan 2016 16:43:31 +0000

我在一条小河旁长大河道干涸长满杂草每天从桥头走到桥尾背着一背包课本

在我更小的时候春天有风筝夏天有星星秋天大雁南飞冬天老爷爷老奶奶寄来一大箱酥油点心街道上卖饼的大哥舍不得早收摊

后来电视变了有了手机电脑烟囱不知道去了哪也不再要柴火我生病吃药翻看越来越多字的书

再后来我穿上外套推开大门头也不回地走到人群里

I was grown up beside a brook The watercourse dried up / overgrown with weeds Everyday walked from the beginning of the bridge to the end Bore a full backpack of textbooks

When I was even younger There are kites in spring Stars in summer Wild geese fly to the south in autumn Dedushka and babushka sent a fulfilled box of butter pastries Folk who was selling pancakes on the street Reluctantly to pack up the stall early

Later on the television changed There were mobile phones and computers Don't know where the chimney went And there's no need for the firewood I got sick / took medicines / read books with more and more characters

And later / I put on my coat / pushed the door Walked into the crowd without a looking back