Love 0.9.1变化（相对于0.9.0）

Additions

• Added love.getVersion.
• Added love.system.openURL.
• Added “screen” BlendMode.
• Added Source:clone.
• Added ParticleSystem:clone.
• Added ParticleSystem:moveTo, has smoother emitter movement compared to ParticleSystem:setPosition.
• Added ParticleSystem:setRelativeRotation.
• Added love.graphics.setWireframe and love.graphics.isWireframe for debugging.
• Added Mesh:setDrawRange and Mesh:getDrawRange.
• Added Mesh:setTexture, SpriteBatch:setTexture, and ParticleSystem:setTexture. Accepts Canvases and Images.
• Added high-dpi window support for Retina displays in OS X, via the ‘highdpi’ window flag.
• Added love.window.getPixelScale.
• Added love.graphics.getSystemLimit.
• Added antialiasing support to Canvases.
• Added Canvas:getFSAA.
• Added love_ScreenSize built-in shader variable.
• Added support for gamma-correct rendering.
• Added a boolean srgb window setting to love.conf and love.window.setMode.
• Added variant of love.graphics.newImage which interprets the image inthe sRGB colorspace.
• Added a new TextureFormat “srgb” for use with Canvases.
• Added love.graphics.isSupported(“srgb”)
• Added love.math.gammaToLinear and love.math.linearToGamma.
• Added RandomGenerator:getState and RandomGenerator:setState.
• Added CircleShape:getPoint and CircleShape:setPoint.
• Added Body:setUserData and Body:getUserData.
• Added some missing obscure KeyConstants.
• Added optional callback argument to
  love.filesystem.getDirectoryItems.

Deprecations

• Deprecated Mesh:setImage, SpriteBatch:setImage, and
  ParticleSystem:setImage.
• Deprecated love.graphics.getMaxImageSize and
  love.graphics.getMaxPointSize.

Fixes

• Fixed love.graphics.scale with negative values causing incorrect line widths.
• Fixed Joystick:isDown using 0-based button index arguments.
• Fixed love.graphics.setCanvas() to restore the proper viewport and
  scissor rectangles.
• Fixed TrueType font glyphs which request a monochrome bitmap pixel mode.
• Fixed love.graphics.reset causing crashes when called in between
  love.graphics.push/pop.
• Fixed tab characters (“\t”) to display properly with love.graphics.print.
• Fixed love.graphics.isCreated to return false if love.window.setMode fails.
• Fixed love.window.setMode to only destroy OpenGL resources after
  checking if a fullscreen size is supported.
• Fixed loading BC4 compressed textures.
• Fixed World:getBodyList and World:getJointList causing hard crashes.
• Fixed Fixture:setUserData and Fixture:getUserData to work in
  coroutines.
• Fixed Source:setPitch to error when infinity or NaN is given.
• Fixed SoundData objects being initialized with garbage sample values.
• Fixed 8-bit SoundData samples when used with love.audio Sources.

Other Changes

• Updated t.console in love.conf to create the console before modules are loaded in Windows.
• Updated the default love.run code to make initial love.math.random
  calls more random.
• Updated the error text for love.filesystem’s module searchers when require fails.
• Updated the love.filesystem module searchers to be tried after
  package.preload instead of before.
• Updated love.filesystem’s C library loader to look in paths added via love.filesystem.mount, in Fused mode.
• Updated love.graphics.newParticleSystem,
• love.graphics.newSpriteBatch, and love.graphics.newMesh to accept Canvases.
• Updated Canvas drawing code, texture coordinates are no longer flipped vertically.
• Updated Canvas:renderTo to work properly if a Canvas is currently active.
• Updated ParticleSystem:setEmissionRate to accept non-integer numbers.
• Updated Mesh vertex maps (index buffers) to use less VRAM space.
• Updated love.graphics.newMesh and Mesh:setVertices to default the UV parameters to 0,0.
• Updated fullscreen-desktop and resizable window modes in OS X to use Mac OS 10.7’s fullscreen Spaces.
• Updated Source:play to return a boolean indicating success.