Underwater Sunlight Caustics & Ocean Refraction Slider (Avatar 2 Style)

Function:

Precisely controls the presence and intensity of dynamic sunlight caustics and underwater optical refraction in marine scenes.

- Positive weights inject crystal-clear tropical sunlight refraction with vibrant, dancing golden caustic web networks rippling across characters' wet skin, marine creatures, and sandy seabeds.

- Negative weights strip away caustic webs, restoring a flat, overcast, or deep murky ambient underwater atmosphere without optical refraction.

Parameters:

- Model Name: underwater_caustics_slider_mmh3_v1.safetensors

- Base Model: MiniMax-H3

- Recommended Weight: +2.0 ~ +3.5 (Tuning Range: -5.0 ~ +5.0)

- Trigger Mode: Plug and play (Works directly via weight slider, enhanced by cue words)

Trigger & Cue Words:

- Positive Cues (+):

sharp dynamic underwater sunlight caustics, shimmering golden caustic web patterns, vibrant refractive caustic light ripples, crystal-clear tropical marine sunlight refraction.

- Negative Cues (-):

flat uniform diffuse underwater lighting, zero caustics, dull murky diffused ambient water light without caustic webs, flat unrefracted light.

Visual Effect:

- Positive Weight (+2.0 ~ +3.5):

* Dynamic, shimmering golden caustic web patterns dance across surfaces.

* Hyper-realistic water volume transparency and high-contrast specular highlights.

* Perfect for tropical coral reefs, sunlit lagoons, and "Avatar 2: The Way of Water" cinematography.

- Negative Weight (-2.0 ~ -5.0):

* Completely flattens caustic highlights into uniform ambient diffused light.

* Ideal for deep abyssal waters, gloomy storm seas, or interior industrial water tanks.

Prompt Example (T2V / I2V):

integrated_multimodal_description: [Shot 1] Cinematic, crystal-clear tropical ocean documentary style. Gliding effortlessly through a sun-drenched turquoise coral lagoon, a sleek aquatic creature swims gracefully above vibrant purple and orange coral formations. The rippling sea surface above refracts brilliant tropical sunlight, casting an intricate, high-contrast network of shimmering golden caustic web patterns that dynamically dance across the creature's smooth skin and the white sandy seabed. Thousands of tiny suspended bioluminescent particles catch the caustic light beams like underwater dust motes. The water volume exhibits realistic optical depth absorption, transitioning from luminous aqua-green near the surface to deep sapphire blue in the distance. The camera executes a smooth, weightless tracking movement beside the swimming creature with zero grain and crystal-clear clarity.

overall_soundscape: Deep, soothing oceanic rumble and muffled ambient water flow, accented by gentle underwater bubbles popping and the faint, high-pitch song of distant marine mammals.

non_diegetic_music: Ambient cinematic underwater synth pads and gentle acoustic harp ripples evoking tranquility and majesty.

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模型名称：

水之道 · 水下动态光焦散滑块 [MiniMax-H3]：《阿凡达2》电影级水下聚光网纹

功能说明：

专为 MiniMax-H3 研发的海洋物理与光学反射 Concept Slider。精准调控水下场景中“阳光穿透波浪折射产生的动态金色光焦散（Caustics）”强度：

- 正向权重：赋予热带澄澈海洋大片专属的金色流动网格高光，随水面波纹律动起伏打亮角色湿润皮肤、生物鳍翼与珊瑚海底，呈现 4 亿美元《阿凡达：水之道》级别的极致通透质感。

- 负向权重：彻底消除波纹聚光，还原为深海无光带或阴雨天漫反射的浑浊平淡水体。

参数推荐：

- 权重文件名：underwater_caustics_slider_mmh3_v1.safetensors

- 适用底模：MiniMax-H3

- 推荐使用权重：+2.0 ~ +3.5（日常微调：+1.0 ~ +2.0，全量程：-5.0 ~ +5.0）

- 触发方式：无需强加触发词（即插即用滑块），在提示词中加入对应引导词效果倍增。

强化提示词搭配：

- 正向强化 (+):

sharp dynamic underwater sunlight caustics（锐利水下光焦散）, shimmering golden caustic web patterns（闪烁金色光网纹理）, vibrant refractive caustic light ripples（起伏折射光斑水纹）, crystal-clear tropical marine sunlight refraction（澄澈热带海水折射）.

- 负向纯化 (-):

flat uniform diffuse underwater lighting（平淡均匀漫反射水下照明）, zero caustics（无光焦散）, dull murky diffused ambient water light without caustic webs（无光网的暗沉浑浊水体）.

视觉表现特征：

- 正向权重 (+2.0 ~ +3.5)：

* 皮肤、衣物与海底生成清晰跳跃、随水波扭曲变形的交织网状金色高光。

* 显著增强海水通透度与立体纵深感，消除 AI 常见的水下“白内障磨砂感”。

- 负向权重 (-2.0 ~ -5.0)：

* 抹除水面高光聚光，呈现阴天冷峻、深邃、压抑的漫射水体。

* 适合深渊海沟潜伏、室内实验水箱、暴风雨夜潜场景。

标准测试提示词（破水而出长镜头）：

integrated_multimodal_description: [Shot 1] Breathtaking, ultra-high-budget cinematic sequence in the visual style of James Cameron's Avatar: The Way of Water. A majestic sea-dwelling alien warrior rides a winged aquatic beast, surging from the deep turquoise reef toward the bright ocean surface in a seamless single tracking shot. Underwater, intense golden sun caustics ripple across the creature's mottled green skin and the warrior's wet cyan body, with a dense vortex of aeration micro-bubbles swirling off the creature's sweeping fins. At 00:02.500, the beast explosively breaches the surface into the sunlit air. As they break through, realistic fluid surface tension forms a delicate water meniscus across their shoulders before bursting into a dynamic cascade of crystal-clear water sheets and airborne droplets. The warrior's long braided dreadlocks transition instantly from floating weightlessly in water to clumping together into thick, glistening wet strands dripping with water beads onto bare skin. Glistening thin water films coat their muscular torso with hyper-realistic specular highlights, reflecting pure tropical sunlight without any cartoonish blur. The camera tracks at water level, half-submerged in a split-field framing, capturing the crystal-clear subsurface reef below and the sun-drenched tropical horizon above.

overall_soundscape: A muffled, resonant underwater hum with the rhythmic swish of powerful flippers, followed by an explosive, crisp breach whoosh as water violently displaces into the air, accompanied by the sparkling patter and splashes of falling water droplets on the calm ocean surface.

non_diegetic_music: Sweeping, ethereal tribal orchestral score featuring oceanic woodwinds, ambient vocal hums, and majestic cinematic brass that swells majestically upon breaching.