OptionalvertOptionalgeometryOptionaluniformsOptionaltargetRender target of the effect.
It renders to the Canvas if omitted (or null).
OptionalblendBlend mode override. Default: "premultiplied" when drawing to
the canvas (target null/omitted), "none" when drawing to a
user-allocated render target. Use "additive" for accumulating
draws like sparkles or particle stamps.
Default:
ctx.quad.