Pixelflut for Solana

Rules

• Free-for-all
• Canvas consisting of 32x32 chunk (3072 bytes)
• RGB bitmap
• Each transaction sets one pixel

Program

The pixelstrom program maintains the virtual canvas.

Instruction: SetPixel

Sets a single pixel in the canvas.

Will only execute when it is the only instruction in a transaction.

Account inputs:

1. Chunk account (writable)
2. Instructions sysvar

Instruction data (big-endian)

1. x: i32
2. y: i32
3. r: u8
4. g: u8
5. b: u8

Account: Chunk

Chunk accounts are PDAs.

The PDA seeds list looks like this:

• ASCII string Chunk
• Big-endian i32 chunk coordinates (y, x).

def chunk_seed(y, x):
    return [b'Chunk', struct.pack(">i", y), struct.pack(">i", x)]

>>> list([b.hex() for b in chunk_seed(-4, 3)])
['4368756e6b', 'fffffffc', '00000003']