Blender is een professioneel, maar desondanks gratis, programma voor 3D animatie dat in diverse speelfilms gebruikt is. Blender is een 3D content creation suite die uitgebreide mogelijkheden biedt voor 3D modeling. Door de complexiteit van de software wel meer voor gevorderden of voor mensen die veel tijd willen investeren in het leren doorgronden van alle opties.

Blender 2.57a is een onderhoudsupdate voor de stabiele 2.5-versie. Hierin worden een aantal crashes en een fout in het sculpting werktuig opgelost. Verder een waslijst aan kleine verbeteringen en reparaties die u hieronder kunt nalezen.

Blender 2.57a is te downloaden voor Windows XP, Vista en 7, Mac OS X en Linux.

Release notes:

Essential Fixes:

• sculpting partial redraw glitch #26932, r36161
• crash on entering 3D text editmode (OSX only) #26930, r36179
• crash on loading 2.4x files #26904, r36148
• loading file with packed audio crashes #26990, r36213
• loading large blend files speed-up r36241, r36244

Rendering:

• black dots with raytrace reflections & bump mapped dupli-objects #26902, r36165
• render crash when tangents are used with modifiers that remove orco coordinates #26933, r36170
• incorrect errors for panorama & orthographic camera combination #26906, r36184
• no output from texture node group #27034, r36251
• crash setting voxel data to negative resolution #27083, r36256
• crash when loading invalid voxel data and resource leak - never closing files #27084, r36257
• wrong sequencer alpha gradient #25713, r36197

Interface:

• top bar 'Add -> Mesh -> UV Sphere + Enter' - crashed #27058, r36242
• buttons with centered text truncating the first characters when there wasn't enough space #26937, r36174
• single grease pencil points drawing very large in the image editor, r36154
• incorrect relative path used when opening audio #26949, r36209
• unpacking sounds with a long ID name #27015, r36214
• ambiguous operator names in the search popup #26977, r36221
• crash copying datablocks with ID Property arrays #26967, r36229
• console is not hidden when start blender #26884, r36243
• outliner objects showed "active" or "selected" in confusing ways #27026, r36248
• freedesktop icons, incorrect install location and copying SVG #27086, r36260, r36261
• sunsky presets used deprecated property names #27094, r36268.
• non-functional user preference for clamping texture #26955, r36186
• smooth tangent iteration field in curve panel not responding #26989, r36198
• text editor indentation correction when when line contained ',' or ':' in a string, r36187
• text editor copy/paste breaks formatting of script #27014, r36236

Tools:

• "make fur" gave errors with multiple selected objects. r36250
• mesh editmode de-selecting edge loops #26931, r36159
• dupli-extrude-cursor added wrong location when nothing selected #27016, r36216
• mesh rip tool access from menu fail #26936, r36226
• crash copying mesh, armature, lattice and metaball datablocks while in editmode #27096, r36263, r36264
• explode modifier - apply as shape impossible #27075, r36249
• add object, localview and undo error #27044, r36245
• buffer overflow with string lengths for operators that took ID names, r36219

Compositing:

• 'Hue Correct' composite node saturates #26945, r36201
• 'Displace Node' composite node crashes Blender when connected to Z-Buffer #26896, r36202
• lens distortion composite node delivered RGBA out with alpha zero #26901, r36212
• timeline camera switch failed with compositor renderlayers #26900, r36217
• rendering non active scenes from the compositor used wrong frame, r36218
• modified nodes inside edited groups not updating the view #27018, r36227

Python:

• bpy.context.object.collision access crash #26995, r36204
• crash running the transform operator from python #27011, r36215
• button input could do incorrect unit system replacements of valid python expressions r36199, r36206
• bpy.utils.blend_paths(True) crash #27072, r36246

Game engine:

• blenderplayer wasn't finding bundled python #26951, r36208
• game engine radar sensor broken #26795, r36234

Animation:

• apply scale to armature offset bone children #27006, r36211, r36233
• action/NLA editor issues with animation data context #25960, r36222
• particle group object viewport and render scale mismatch #27008, r36224
• action editor header doesn't update when entering tweakmode on NLA strips #25960, r36225
• bugs when linking particles/collision/softbody modifiers #27038, r36228
• separate armature would also separate active, unselected bone r36232
• available keying set fails in armature pose mode #27090, r36258
• b-bone doesn't resize correctly with numeric input #27095, r36270

Additions

• API for exporters to write paths with different absolute/relative options. r36155
• image and compositor now show the color under the cursor as well as HSV and luminance. r36239

Blender Addons

Fixed

• Add Corrective Shape Key: api update. r1830
• Fracture Tools: api update r1835, r1836
• Povray render export fix for writing invalid names r1842.
• Unreal Engine (PSA / PSK):
  • fixed mesh rebuild for face id materials and vertex groups. r1839
  • fixed vertex group support r1844
  • fixed uv's and tri and quad mesh rebuild button r1832
• View3D Copy Menu: fixed for new api r1845
• 3DS Import: support for files which reference non-existing materials. r1846
• OBJ Import: loading when in pose mode failed #27019, r1848
• RenderFarmFI: Added guidelines for submitting the render and fix error where hasSmokeSimulation lacked parenthesis r1850
• Add Mesh Extras: missing argument to menu operator r1850

Additions

• added OBJ & FBX options for exporting paths - relative/absolute/automatic/copy-file/strip-path r1828