Shaders/Before 1.9

Shaders are a feature being tested in the 1.7.2 update. 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.

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.
Creeper	Similar to Green, but with no black borders. Only accessible with spectator mode /gamemode 3 and using a Creeper's view (1.8+).	No images yet :(
Spider	5 "eyes" onscreen with blur in between, similar to a spider's face. Only accessible with spectator mode /gamemode 3 and use a Spider's view (1.8+).	No images yet :(
Antialias

Passes

Passes	Description	Fragment Shader	Vertex Shader
antialias.json	Used in Antialias.	antialias.fsh	blobs.vsh
bits.json	Used in Bits, Creeper and Green.	bits.fsh	sobel.vsh
blit.json	Used in Antialias, Art, Bits, Blobs, Blobs2, Bumpy, Color convolve, Deconverge, Desaturate, Flip, FXAA, Green, Invert, Notch, NTSC, Outline, Pencil, Phosphor, Scan pincushion, Sobel, Spider 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, NTSC and Spider.	blur.fsh	sobel.vsh
bumpy.json	Used in Bumpy.	bumpy.fsh	bumpy.vsh
color_convolve.json	Used in Color convolve, Creeper, 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
spider.json	Used in Spider.	spiderclip.fsh	rotscale.vsh
wobble.json	Used in Wobble.	wobble.fsh	sobel.vsh