#1: extendible GemState

Contents

1. Motivation
2. Proposal
3. Risks

Proposed by

IOhannes m zmölnig

Proposal type

Architecture

Assigned to release

• Gem 0.93.0
• Gem 0.94_pre1 (Alpha release)

State

completed

Motivation

the current GemState-class cannot be extended without breaking ABI compatibility.

Proposal

GemState should use a key/value mechanism, where one could set "attributes" based on a symbolic-name.

examples

OLD: state->image

NEW: state.getData(gensym("pixBlock"))

this will break API and ABI compatibility, but only once and for all

Risks

performance penalty (shouldn't very high: openGL uses a glGet(NAME) as well)