Update: default to .rec .
Update: Add renderer2d_fill_rect.
Update: Add menu.
Update: Add linux compatability.
Merge branch 'develop' of https://github.com/Sachs27/easy-paint into develop
Update: Add linux compatibility.
Bug fix: the initial canvas' tile has dirty content.
Update: Bug fix: random crash when record_redo; Add canvas_adjust.
Merge branch 'develop' of https://github.com/Sachs27/easy-paint into develop
Update: Add ui_repaly_panel.
Update: record adjust to the current canvas size.
Update: translate GLSL 330 to GLSL 130.
Update: Extract windows specific code.
Update: Add resource_manager.
Update:Add Android Support.
Update: Add resource record.
Update: add user_teach_panel.
Update: Use UI tree model.
Fix bug: glTexImage2D doesn't work on Android device.
update to new libsf