With the highdpi window flag enabled on a retina-capable display and OS, content should now appear to the user at the same size and in the same positions as with the flag disabled.
As a result, mouse and touch coordinates, Texture and graphics dimensions, and the graphics coordinate system now use pixel density-scaled units instead of pixels. Raw pixel units should generally only be used for things such as shader algorithms which execute per-pixel and rely on accurate pixel dimensions. love.window.fromPixels and friends typically don’t need to be used anymore.
Images, Canvases, and Fonts can have an optional explicit ‘pixel density’ set when creating them. This allows for easily loading high pixel density content which displays at the same size as regular or low pixel density content.
API changes:
- Added Texture:getPixelWidth/getPixelHeight/getPixelDimensions and Texture:getPixelDensity. Texture:getWidth/getHeight return the pixel density-scaled width and height (as it will appear on the screen when drawn) rather than the number of pixels on each texture dimension.
- Added love.graphics.getPixelWidth/getPixelHeight/getPixelDimensions.
- Added optional ‘pixeldensity’ field to the settings table parameter of love.graphics.newImage. It defaults to 1, or if the file the Image was loaded from has “@2x”, “@3x”, etc. at the end of its name, it uses that number as the pixel density scale by default.
- love.graphics.newCanvas now takes a table as its third parameter, with fields “format”, “msaa”, and “pixeldensity”. pixeldensity defaults to the main screen’s pixel density. The width and height parameters specify the visual size that the Canvas will be drawn at / can be drawn to (pixel density-scaled units).
- love.graphics.newVideo accepts a table as its second parameter, with optional fields “audio” and “pixeldensity”. pixeldensity defaults to 1.
- love.graphics.newFont variants have an optional pixeldensity parameter at the end of the argument list. For TrueType fonts this defaults to the current pixel density scale of the screen, and for BMFonts and ImageFonts this defaults to 1.
- Added Font:getPixelDensity.
- Renamed love.window.getPixelScale to love.window.getPixelDensity.
--HG--
branch : minor
This doesn’t actually improve performance at all in most cases, but it does remove some OpenGL-specific code from the Font files, and reduces the amount of duplicated rendering code. This makes it slightly easier to add support for Core Profile OpenGL 3.
--HG--
branch : minor
It now defers uploading the uniforms to the program object until the shader becomes active again, instead of activating the shader program and deactivating it each time Shader:send is called.
--HG--
branch : minor
The above are batched together into a single draw call when called without other drawing calls in between, as long as the following criteria are met:
- The texture is the same.
- The primitive type is the same (points cannot be batched with non-points).
- The love.graphics state is the same (aside from the current color - i.e. setColor - and the transform state).
- The active shader’s uniform values are the same.
You can examine the ‘drawcalls’ field of love.graphics.getStats() to help determine if your code is allowing for optimum batching.
--HG--
branch : minor
Use Source:setFilter(type, params...) to set a filter.
Use Source:setFilter() to detach the current filter.
Use Source:getFilter() to get the currently set filter (or nil).
Squashed from pull request 27, and the clean-pr27 branch in love-experiments.
--HG--
branch : minor
Instead of a global type enum and bitfield, all types now have their own
love::Type static member. This means they automatically assign their ids, build
their bitsets, etc. As a bonus, it simplifies wrapper code since most functions
already know which type they're pushing to or getting from lua, so they can
directly get the static member (if it's called 'type').
--HG--
branch : minor
Alex Szpakowski
Raidho
Bart van Strien