Recitation 5: Rendering Fractals

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Best <strong>Rendering</strong> ● ● ● ● ● But we can speed this up! We have a distance estimator If we estimate we are 0.5 units away, no need to step ray by 0.001 Step by a * d(z) – a is just some constant.. 0.1-0.5 works well Will this cause thread divergence? – Not really, threads that finish early will just wait – Note: These distances are in 4D
Drawing Isosurface ● ● ● ● Stop stepping along the ray when we hit surface, and render something In order to do lighting, we'll want the normal For a smooth scalar field, the normal is the gradient of the field at that point Compute gradient from volume texture? – No, this will be blocky – Instead, compute gradient via more juliaDist calls
Page 1 and 2: CS179: GPU Programming Recitation 5
Page 3 and 4: Volume Data ● ● ● ● Stored
Page 5 and 6: Textures ● ● ● ● Can set pr
Page 7 and 8: Lab 5 ● ● Rendering quaternion
Page 9 and 10: The Mandlebrot Set
Page 11 and 12: The Mandlebrot Set ● Defined by i
Page 13: Julia Set ● Each point of the Man
Page 18 and 19: Quaternion Julia Sets ● We could
Page 20 and 21: Quaternion Julia Sets ● So, we ca
Page 22 and 23: Quaternions in Lab 5 ● ● ●
Page 24 and 25: Julia Distance Function ● ● ●
Page 26 and 27: Julia Distance Function ● How to
Page 30 and 31: Computing Normals ● Theoretically
Page 32 and 33: Important Note on Registers ● ●
Page 34 and 35: Lab 5 ● ● ● ● Organize your
Page 36 and 37: Cool stuff: ● ● Color it howeve
Page 38: Final Notes ● We could just raytr

Recitation 5: Rendering Fractals

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