Render scene passes with shader processing The jit.gl.pass object encapsulates processing of one or more sub-passes. A sub-pass consists of a single frame of gl, and post-processing shader, and is defined in a xml pass description file (JXP). Complex scene-processing hierarchies can be obtained by chaining multiple jit.gl.pass objects. Cycling '74 Jitter messages to this 3d object TEXT_HERE TEXT_HERE texture output TEXT_HERE connect to child jit.gl.pass objects TEXT_HERE dumpout TEXT_HERE Dynamic attributes Get and set dynamic attributes generated from sub-pass shader parameters. Drag and drop a .jxp file Drag and drop a .jxp file Open the JXP file Open the JXP file Open the JXP file Open the JXP file Sets the given shader parameter with the given atom values as defined in a JXS (Jitter shader) Sets the given shader parameter with the given atom values as defined in a JXS (Jitter shader) file. Load a JXP file from disk Load a JXP file from disk Child jit.gl.pass name The child jit.gl.pass name (default = none). Set automatically by patchcord connection, and manually by providing a valid jit.gl.pass object name. Depth drawto context name Depth drawto gl context name. Unless set by user, depth_drawto equals drawto JXP file name JXP file name (default = none) Output texture name Output texture name (default = UID). If there is a name collison then the UID will be appended to the name that is in conflict. Texture quality Internal texture quality (deault = med). Changeing quality changes the type attribute of internal jit.gl.texture objects. type = char TEXT_HERE type = float16 TEXT_HERE type = float32 TEXT_HERE Each JXP file contains one or more <pass> effects. Each pass-effect contains one or more <subpass> tags. The <subpass> specifies a shader file for processing its pass, using the "file" attribute, or a jit.gl.pix gen file using the "gen" attribute and contains one or more <input> tags. Certain attributes of jit.gl.slab or jit.gl.pix can also be set here (e.g. dimscale, rect). The subpass can also contain a "name" attribute, allowing it to be referred to as an input for other subpasses. The number of input and output textures processed by the subpass can be specified by "inputs" and "outputs" attributes.

The input specifies its texture source by setting either "name", "source", or "subpass". Name can be any named texture, subpass can be any named subpass, and source can be one of the following:
COLOR - the jit.gl.node color render target (or color output of previous jit.gl.pass)
NORMALS - the jit.gl.node normals render target + depth in alpha channel
VELOCITY - the jit.gl.node velocity render target
PREVIOUS - the preceding subpass output
HISTORY - the previous jit.gl.pass output
TEXTURE0..N - the jit.gl.pass texture attribute list of texture names
SUBPASS0..N - any subpass output of the current jit.gl.pass
Texture and subpass indexing starts at 0, so SUBPASS0 refers to the first subpass output, SUBPASS1 the second and so on.

The output index of a multi-output subpass input type is specified using an "output" attribute and 0-based indexing. The previous frame of supass input types can be requested using the history keyword and setting it to 1. For example to set second output of the previous frame as the input. <input subpass="mysubpass" output="1" history="1" /> Both "output" and "history" only work on "subpass" type inputs.

Pass effects that request NORMALS or VELOCITY as input sources require jit.gl.material or jit.gl.pbr objects bound to any geometry objects in the scene. These effects include depth, dof, motionblur, and ssao.

For an example of creating custom pass effects, see the pass.custom.effects example patch.

Read in JXP files by their pass name using @fxname. This is not the same as the filename, and is determined by the pass name in the JXP file. Below are included <pass> effects linking to corresponding examples :

atmospheric - Atmospheric scattering and ground fog
bloom - Produce atmospheric light extending along the borders of bright areas
depth - Depth Blending effect
fxaa - Fast approximate anti aliasing
gamma - Tone mapping, gamma correction and dithering noise pass
motionblur - Blur effect based on pixel velocity
motionglitch - Data mosh type glitch effects
smear example - Pixel smearing effect
ssao - Screen-space ambient occlusion
ssr - Screen-space reflection approximation
tonemap - Modify tonal value of pixels
tssao-gi - Temporal screen-space ambient occlusion with global illumination
tssao-gi-ssr - Temporal screen-space ambient occlusion with global illumination and screen-space reflections