cf_readback_data¶

Copies readback pixel data into the provided buffer.

int cf_readback_data(CF_Readback readback, void* data, int size);

Parameters	Description
`readback`	The readback handle.
`data`	Pointer to the destination buffer.
`size`	Size of the destination buffer in bytes.

Return Value¶

Returns the number of bytes copied, or 0 if the readback is not yet ready. Copies min(size, total) bytes.

Pixel format matches the canvas target format (typically RGBA8, 4 bytes per pixel).