Shaders are a feature being tested in the 1.7.2 update[1]. You can switch between them by pressing the "Super Secret Settings..." button under options in the menu. Although it doesn't work for some people. Shaders can be disabled by pressing the F4 key. Shaders may not work in computers that do not have OpenGL 2.1.
Note that the differences between certain shaders can be very subtle, and therefore, to notice the differences, it might be necessary to observe a picture with higher resolution by pressing one of the pictures below.
sc== Shaders ==
| Name | Description | Sample Images |
|---|---|---|
| Default | This does not utilize shaders. Use as a baseline for comparing to the screenshots below. | 
|
| Notch | This shader adds a dithering effect.
It seems to be a reference to the game Dwarf Fortress, one of the games that inspired Notch to make Minecraft. |
|
| FXAA | This shader adds a small amount of anti-aliasing (smoothing jagged edges), most visible in trees along the horizon. | 
|
| Art | Pixels are blurred outward, causing moving objects to twinkle. | 
|
| Bumpy | Outlines color differences, and gives textures a 3D look. (More visible when viewing screenshot at full resolution.) | 
|
| Blobs2 | Similar to Art, but less graphically intensive. | 
|
| Pencil | Meant to give the world a pencil-sketch appearance. | 
|
| Color convolve | Intensifies colors, adding vibrancy. | 
|
| Deconverge | Offsets the red, green, and blue color channels. | 
|
| Flip | Flips the player's view vertically. | 
|
| Invert | Inverts colors. | 
|
| NTSC | Gives the player's view the impression of a CRT Monitor/Television Screen. | 
|
| Outline | Outlines color differences similarly to Bumpy, but less complex. | 
|
| Phosphor | Pixels on screen linger, being "dragged out" when in motion before fading away. | 
|
| Scan pincushion | Similar to NTSC, but without the blurring and much less graphically intensive. | 
|
| Sobel | Turns the view black except for the edges of textures. | 
|
| Bits | Changes the view to a low resolution 2D texture with an 8-bit color scheme. | 
|
| Desaturate | Reduces intensity of colors drastically, causing, as the name suggests, a desaturated effect. | 
|
| Green | Scan Pincushion and Bits, but with a green overlay. | 
|
| Blur | Blurs the screen overall, independent of what is being displayed. | 
|
| Wobble | Colors cycle through the hue range constantly. All displayed pixels move up and down via a sine calculation. It should be noted that this only effects the screen plane and not the vertexes being displayed by it, as observing the very edge of the screen reveals the pixels being moved. | 
|
| Blobs | Similar to Blobs2 and Art, but the spots are tiny when close up and big when far away. | 
|
| Antialias | 
|
Passes
| Passes | Description | Fragment Shader | Vertex Shader |
|---|---|---|---|
| antialias.json | Used in Antialias. | antialias.fsh | blobs.vsh |
| bits.json | Used in Bits and Green. | bits.fsh | sobel.vsh |
| blit.json | Used in Antialias, Art, Bits, Blobs, Blobs2, Color convolve, Deconverge, Desaturate, Flip, FXAA, Green, Invert, NTSC, Outline, Pencil, Phosphor, Scan pincushion, Sobel and Wobble. | blit.fsh | blit.vsh |
| blobs.json | Used in Blobs. | blobs.fsh | blobs.vsh |
| blobs2.json | Used in Art and Blobs2. | blobs2.fsh | blobs.vsh |
| bloom.json | phosphor.fsh | sobel.vsh | |
| blur.json | Used in Art, Blur and NTSC. | blur.fsh | sobel.vsh |
| color_convolve.json | Used in Color convolve, Desaturate, Green and NTSC. | color_convolve.fsh | sobel.vsh |
| deconverge.json | Used in Deconverge and NTSC. | deconverge.fsh | sobel.vsh |
| downscale.json | downscale.fsh | downscale.vsh | |
| flip.json | Used in Flip. | blit.fsh | flip.vsh |
| fxaa.json | Used in FXAA. | fxaa.fsh | fxaa.vsh |
| invert.json | Used in Invert. | invert.fsh | blit.vsh |
| notch.json | Used in Notch. | notch.fsh | sobel.vsh |
| ntsc_decode.json | Used in NTSC. | ntsc_decode.fsh | sobel.vsh |
| ntsc_encode.json | Used in NTSC. | ntsc_encode.fsh | sobel.vsh |
| outline.json | Used in Outline. | outline.fsh | sobel.vsh |
| outline_combine.json | Used in Art. | outline_combine.fsh | sobel.vsh |
| outline_soft.json | Used in Pencil. | outline_soft.fsh | sobel.vsh |
| outline_watercolor.json | Used in Art. | outline_watercolor.fsh | sobel.vsh |
| overlay.json | overlay.fsh | blit.vsh | |
| phosphor.json | Used in NTSC and Phosphor. | phosphor.fsh | sobel.vsh |
| scan_pincushion.json | Used in Green, NTSC and Scan pincushion. | scan_pincushion.fsh | sobel.vsh |
| sobel.json | Used in Sobel. | sobel.fsh | sobel.vsh |
| wobble.json | Used in Wobble. | wobble.fsh | sobel.vsh |