POC / Shader Editor

Keywords

PassCreate(passName)

Add a pass with the unique name passName, this creates a renderpass that can be refererenced from other passes.

PassGetSampler(sourcePassName, sourcePassOutput)

Note: this is only allowed inside a PassCreate block

Fetch the output from another pass as a sampler2D

PassStore(format, outputName, value)

Note: this is only allowed inside a PassCreate block

Store a value in the specified outputName at the thread's current. This is effectively writing to one of the global out variables

• formats: rgba8, r32f, etc..

PassSetSize(width, height)

Note: this is only allowed inside a PassCreate block

Sets the width and height of the pass. If not provided, it will default to the viewport size.

TODO: add support for scaling this relative to the viewport size

DEVLOG

Future

• expand PassGetSampler to allow configuration (filtering, clamping mode, etc...)

• implement PassSetInvocations(int)

• implement PassSetMipmapBuilder()

• implement PassParamF32(rangeStart, rangeEnd, initialValue, scale) Add a pass specific float slider with the given range and initial value scales: linear

• add gltf loader/viewer

• consider persisting undo/redo snapshot

Pending

• handle nested PassGetSampler inside PassStore
• ignore Pass* instructions that live in comments
• add expression solver to allow pass size to be scaled

2024-09-08

• implement PassSetSize(w, h)
• actually resize render target based on PassSetSize
• rename programs to passes
• persist editor state on reload (e.g., cursor position and viewport)
• make parser bugs not break the entire editing experience (try/catch)