Doing so prevents us from double-locking the glyph cache, thereby
effectively locking ourselves out of reusing work that we'd just done.
Bug: 11968757
Change-Id: I5c552f2d0bbe30af2ce9054ba684e7da756a0d89
This change extracts the scale parameters of the current transform
to pass then to the font renderer. Rotation and perspective are
applied to the generated mesh inside the vertex shader. This limits
the number of glyphs we have to create in the font cache and thus
reduces memory churn.
Change-Id: Ic5b3bae2b2b0e0250a8ee723b071a1709725c749
If a perspective transform is set on the Canvas, drawText() should
not attempt to rasterize glyphs in screen space. This change uses
the old behavior instead (i.e. rasterize the glyphs at the native
font size and apply the transform on the resulting mesh.)
This change also adds an optimization: empty glyphs (spaces) do
not generate vertices anymore. This saves a lot of vertices in text
heavy applications such as Gmail.
Change-Id: Ib531384163f5165b5785501612a7b1474f3ff599
This change does not apply to drawPosText() and drawTextOnPath() yet.
Prior to this change, glyphs were always rasterized based on the
font size specified in the paint. All transforms were then applied
on the resulting texture. This creates rather ugly results when
text is scaled and/or rotated.
With this change, the font renderer will apply the current transform
matrix to the glyph before they are rasterized. This generates much
better looking results.
Change-Id: I0141b6ff18db35e1213e7a3ab9db1ecaf03d7a9c
Fonts are now described by a transform matrix. This lead to switching
from a vector to a hashmap. This change therefore adds new comparators
and hash computations to Font.
Change-Id: I2daffa7d6287c18554c606b8bfa06640d28b4530
FontRenderer.h defined several classes and structures that now live
in the font/ folder. This will make the code easier to read and
maintain.
Change-Id: I3dc044e9bde1d6515f8704f5c72462877d279fe2
