HOW NOW SHADER COW CS 519 Shader Cow

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HOW NOW SHADER COW CS 519 Shader Cow Project Christopher Moore

HOW NOW SHADER COW CS 519 Shader Cow Project Christopher Moore

Details • 1) Render the Scene to the Scene Tex

Details • 1) Render the Scene to the Scene Tex

Details • 2) Render the Advection with the Last Advection Tex

Details • 2) Render the Advection with the Last Advection Tex

Details • 3) Blend the Scene Tex & Advection into the Next Advection Tex

Details • 3) Blend the Scene Tex & Advection into the Next Advection Tex

Details • 4) Dump Next Advection Tex to Screen

Details • 4) Dump Next Advection Tex to Screen

Details • 5) Swap Advection Textures

Details • 5) Swap Advection Textures

Viola

Viola

Tweakable Parameters • Advection Distance • Typically one over texture size • Gradient Sampling

Tweakable Parameters • Advection Distance • Typically one over texture size • Gradient Sampling Distance • Typically the same thing • Flip the Height Map? • Not technically correct but looks good • Transform from gradient to advection • Advect along gradient or along edges

Examples • Original Scene

Examples • Original Scene

Impressionist • Use the background texture for height map • Flip the height map

Impressionist • Use the background texture for height map • Flip the height map • Advect along edges (don’t tell anyone, but it only works well with the dandelion background)

Pointillist • Use the background texture for height map • Flip the height map

Pointillist • Use the background texture for height map • Flip the height map • Advect along gradient

Watercolor • Use the background texture for height map • Large gradient steps

Watercolor • Use the background texture for height map • Large gradient steps

Stained Glass • Use scene tex for height map • Advect against gradient

Stained Glass • Use scene tex for height map • Advect against gradient

Cellular • Use last advect tex for height map • Advect against gradient

Cellular • Use last advect tex for height map • Advect against gradient

Glowing • Use last advect tex for height map • Advect along gradient

Glowing • Use last advect tex for height map • Advect along gradient

In The End

In The End

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