Prise3D/p3d_pbrt-v4-scenes: PBRT v4 scenes for SIN3D @ a072845f04042a71f1ba0215f9031173c4876a00

Matt Pharr e98b07ebd3 Added Transparent Machines frames. (thx @beeple)		4 lat temu
..
1266	e98b07ebd3 Added Transparent Machines frames. (thx @beeple)	4 lat temu
542	e98b07ebd3 Added Transparent Machines frames. (thx @beeple)	4 lat temu
675	e98b07ebd3 Added Transparent Machines frames. (thx @beeple)	4 lat temu
812	e98b07ebd3 Added Transparent Machines frames. (thx @beeple)	4 lat temu
888	e98b07ebd3 Added Transparent Machines frames. (thx @beeple)	4 lat temu