GLSL shaders for Minecraft
When no one can even agree on Notch's motives for the game's look - I want to call it 'Voxel Art' but its polygons won't let me - you can imagine the confusion over how Minecraft should be modded. Maybe that's the beauty of it. At the very least you get the comedy of people striving to make it 'photorealistic', as if waiting for the mod that shrinks each block to 1 cubic pixel so they can make a perfect replica of Crysis.
Better, I think, to flatter the blocks without pretending they're something they're not. I'd love to see realtime radiosity in Minecraft but suspect my computer wouldn't. (You should have heard the noise while rendering these 4K screenshots.) What we do have, though, is the ongoing work on daxnitro's abandoned GLSL Shader mod. Some of it's awful, like the lens flare and depth of field effects, but you can turn those off in the shader files and still enjoy sumptuous light and shadowing.
What I was looking for was a realtime version of the renders described here . It warms me to know I'm still looking at a game . I have to warn you, though, that finding the right shaders for the right version of the mod, for the right version of Minecraft , was an utter chore. Each small update of Minecraft requires a new version of the mod, and each new version of the mod tends to break something, whether it's the lovely new water shader or Nvidia compatibility. It might not even work at all.
You need to learn this stuff for yourself, really, as there's a lot of trial and error. Start by reading the thread for Sonic Ether's Unbelievable Shaders (SEUS) . Then look at Sonic Ether's updates page on Facebook and figure out why he chose such an abhorrent solution as Facebook for an updates page (hint: you can't). If, like me at 2AM, you've followed all of these instructions and have more questions than answers, you could always try chocapic13's preset here which I turned to in desperation, and which actually worked.