| Commit message (Collapse) | Author | Age | Files | Lines |
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but recommended)
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performance-hit measuring performance.
This was mostly notable on a Raspberry-Pi 4 arm64, where perfromance degragated around 3x using high-freq counter.
Using our well determined Clock.currentNanos() removes this overhead,
back to 'easy measuring' and having a well defined 'currentNanos()' since module start.
TestTextRendererNEWT00 can enable Region and Font perf-counter w/ '-perf',
w/o it only uses its own counter and hence reduce the high-freq burden (64% perf win on raspi4).
+++
Below numbers show that Region.addOutlineShape() perhaps needs a little performance work
to allow long text to be processed in 'real time' on embedded platform.
Hower, usually we cache the Region for long text and can have at least one liner
to be renderer within 60fps fast, i.e. Region produced in ~26ms for a 81 char line
instead of ~130ms for 664 chars.
+++
Raspberry Pi 4b, OpenJDK17, Debian 11:
Using current medium sized text_1 w/ 664 chars, w/o '-perf'
and after having passed 40 frames, we have following durations:
- process the OutlineShape -> Region: 129ms (text)
- Render the Region: 53ms
Startup Times:
- loading GlueGen - loading test 0 [ms]
- loading GlueGen - start test 1,910 [ms]
- loading test - start test 1,910 [ms]
- loading test - gl 2,631 [ms]
- loading test - graph 2,636 [ms]
- loading test - txt 2,844 [ms]
- loading test - draw 3,062 [ms]
Perf ..
1 / 1: Perf Launch: Total: graph 5, txt 207, draw 218, txt+draw 425 [ms]
1 / 1: Perf Launch: PerLoop: graph 5,505,740, txt 207,530,736, draw 218,393,680, txt+draw 425,924,416 [ns]
20 / 20: Perf Frame20: Total: graph 16, txt 376, draw 281, txt+draw 657 [ms]
20 / 20: Perf Frame20: PerLoop: graph 807,055, txt 18,820,824, draw 14,075,146, txt+draw 32,895,970 [ns]
20 / 40: Perf Frame40: Total: graph 3, txt 129, draw 53, txt+draw 182 [ms]
20 / 40: Perf Frame40: PerLoop: graph 176,670, txt 6,451,330, draw 2,658,217, txt+draw 9,109,547 [ns]
+++
On a modern desktop (~2y old), GNU/Linux Debian 11, AMD GPU on Mesa3D:
Using current medium sized text_1 w/ 664 chars, w/o '-perf'
and after having passed 40 frames, we have following durations:
- process the OutlineShape -> Region: 42ms (text)
- Render the Region: 5ms
Startup Times:
- loading GlueGen - loading test 0 [ms]
- loading GlueGen - start test 310 [ms]
- loading test - start test 309 [ms]
- loading test - gl 459 [ms]
- loading test - graph 460 [ms]
- loading test - txt 490 [ms]
- loading test - draw 506 [ms]
Perf ..
1 / 1: Perf Launch: Total: graph 1, txt 29, draw 15, txt+draw 45 [ms]
1 / 1: Perf Launch: PerLoop: graph 1,191,096, txt 29,868,436, draw 15,519,445, txt+draw 45,387,881 [ns]
20 / 20: Perf Frame20: Total: graph 240, txt 68, draw 21, txt+draw 89 [ms]
20 / 20: Perf Frame20: PerLoop: graph 12,045,651, txt 3,415,402, draw 1,069,348, txt+draw 4,484,750 [ns]
20 / 40: Perf Frame40: Total: graph 283, txt 42, draw 5, txt+draw 47 [ms]
20 / 40: Perf Frame40: PerLoop: graph 14,152,395, txt 2,116,114, draw 265,292, txt+draw 2,381,406 [ns]
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Clock.getMonotonicTime() ...
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indices growBufferSize(); Add GLRegion.create(..) w/ initial vertices/indices count; Up default[VI]Count;
Following heuristcs were found, hence we might want to calculate these for each font (TODO):
/**
* Heuristics with TestTextRendererNEWT00 text_1 + text_2 = 1334 chars
* - FreeSans ~ vertices 64/char, indices 33/char
* - Ubuntu Light ~ vertices 100/char, indices 50/char
* - FreeSerif ~ vertices 115/char, indices 61/char
*
* Now let's assume a minimum of 10 chars will be rendered
*/
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Ease GLArrayData* buffer growth.
Using integer indices, i.e. GL_UNSIGNED_INT, requires us to pass a GLProfile 'hint' to the GLRegion ctor.
Region.max_indices is computed in this regard and used in Region.addOutlineShape().
TODO: If exceeding max_indices, the code path needs some work.
Buffer growth is eased via GLArrayData using its golden growth ratio
and manually triggering growth before processing all triangles in Region.addOutlineShape().
+++
TextRegionUtil static drawText() won't clear passed Region anymore, caller has to do this if so intended.
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finalize immutables, add growthFactor (default golden ratio 1.618), add getCapacity*() and printStats(..)
The growthFactor becomes essential for better growth behavior and can be set via setGrowthFactor().
The other changes were merely to clean up the GLArrayData interface and its 4 implementations.
Not great to change its API, but one name was misleading ['getComponentCount' -> 'getCompsPerEleme'],
so overall .. readability is enhanced.
Motivation for this change was the performance analysis and improvement of our Graph Curve Renderer.
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moveTo (start) to be onCurve
One of the FreeSerif fonts starts a new segment with two off-curves,
where the mid-point is not onCurve.
Here we have to test whether the previous (point-1 or in code: point_m) is onCurve and
simply start our 'turtle' making the shape there ..
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LeftSideBearings
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(redundant), add getLeftSideBearings*() from htmx table; Flatten TypecastGlyph impl by merging its Metrics, add equal() complementing hashCode()
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use Unicode and if not available use a symbol font
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mapping, rely on no-shape for 'space' non-contour.
Drop erroneous Glyph ID_SPACE, ID_CR to rely on no-shape for 'space' non-contour
resolves different cmap-mappings of fonts, not following 'some std'.
Hence getGlyph(glyph_id) no more uses the `font.getGlyph(Glyph.ID_UNKNOWN)` shape,
but a null-shape as intended and using the hmtx and hhea table values for asvance and bounds.
This fixes 'space' spacing in general and specifically FreeSerif-Regular and the like.
This path also simplifies processing/layout of glyphs in process(..) and get*BoundsFU(..).
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lineGap, document them properly and fix Font.getLineHeightFU()
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rules for OutlineShape and add get/setWinding in Outline
Loop.initFromPolyline()'s Winding determination used a 3-point triangle-area method,
which is insufficent for complex shapes like serif 'g' or 'æ'.
Solved by using the whole area over the Outline shape.
Note: Loop.initFromPolyline()'s Winding determination is used to convert
the inner shape or holes to CW only.
Therefor the outter bondary shapes must be CCW.
This details has been documented within OutlineShape, anchor 'windingrules'.
Since the conversion of 'CCW -> CW' for inner shapes or holes is covered,
a safe user path would be to completely create CCW shapes.
However, this has not been hardcoded and is left to the user.
Impact: Fixes rendering serif 'g' or 'æ'.
The enhanced unit test TestTextRendererNEWT01 produces snapshots for all fonts within FontSet01.
While it shows proper rendering of the single Glyphs it exposes another Region/Curve Renderer bug,
i.e. sort-of a Region overflow crossing over from the box-end to the start.
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dropping redundant getMetricWidth*(); Fix getMetricBoundsFU()
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endOfContour), remove redundant branch B3, add Type-2 and add code dump for testing
Realigned renderer code w/ Typecast's AWT demo:
- TTF Quadratic Shape
- The inner loop 'offset < count' is sufficient, otherwise could drop last point
- point_0.endOfCountour is valid as a last point
- Branch-3 and hence point-3 is not required as handled via B4 and subsequent B6
- Type-2 Cubic Shape
- Added .. not tested yet
Also added optional debug code dump via
java cmdline `-Djogl.debug.graph.font.Renderer.Code`,
which dumps plain OutlineShape construction code for testing
and debugging our CurveRenderer.
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processString(..) to Font, cleaning up ..
Further having Font.processString() return the AABBox of the whole string's 'laidout' OutlineShapes,
which is used for (debug) Font.getPointsBounds2(..) just to validate the coordinated with
the Glyph based AABBox of Font.getPointsBounds(..).
Static TextRegionUtil.drawString(..) no more require to pass the temp AffineTransform instances (ugly).
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getPointsBoundsFU(); Glyph: Drop getSymbol()
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system.
- All pixelSize metrics methods are dropped in Font*
- TypecastGlyph.Advance dropped, i.e. dropping prescales glyph advance based on pixelSize
- TextRegionUtil produces OutlineShape in font em-size [0..1] added to GLRegion
- Adjusted demos
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Use TestTextRendererNEWT01 to produce validation snaps
- Move kerning handling from Font to Font.Glyph using binary-search for right-glyph-id on kerning subset from this instance (left)
- TextRegionUtil: Kerning must be added before translation as it applies before the current right-glyph.
- TestTextRendererNEWT01 produces validation snapshots against LibreOffice print-preview snapshots
- GPUTextRendererListenerBase01 added another text for kerning validation, show more font-size details (pt, px, mm)
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notAvailable String
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higher API layer w/ binary-search
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variable in range-based for-loops
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ctor for File and InputStream
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0d55ac0eb4a39a7f8f2a796c7eebd3ea778ba9a7
- Using Typecast's new git repo https://github.com/dcsch/typecast
- Preserved our changes
- Preserved loading fonts and glyph on input stream w/o font data array copies
TODO
- Maintain an original branch in Typecast w/ our changes
to ease updates. Then we merely need to change the package name.
- This also shall help to allow Typecast to use our patches,
if so desired.
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original font-units (FU) to have them scaled later ( fu * pixelScale / unitsPerEM )
Scaling from font-units (funits, or FU) is now performed by the renderer itself,
i.e. applying the scale-factor 'fontPixelSize / font.getMetrics().getUnitsPerEM()'
to the PMV matrix to render the whole graph GLRegion.
This finally provides proper device and resolution independent font utilization.
Further, preliminary kerning has been added.
+++
Also ...
TypecastFont:
- getGlyphID(..) getGlyph(..) enforce symbol mapping to Glyph.ID_SPACE Glyph.ID_CR,
as some fonts ave an erroneous cmap (FreeSerif-Regular)
- add getKerning(..)
TODO: Add binary search
- Set TypecastFont.USE_PRESCALED_ADVANCE := false,
i.e. dropping all prescaled pixel-sized advance values mapped to font pixel-size
as we utilize font-units only for later uniform scaling.
- Drop virtual getPixelSize() and add static FontScale.toPixels(..)
- Add fullString() for debugging purposed, including some font tables
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and hold a KernSubtableFormat0 ref in KernTable
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Add Path2F addPath(..), emphasize required Winding.CW
GPURegionGLListener01 used by TestRegionRendererNEWT01 covers Path2F CCW and CW (reverse add) methods.
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vertexFactory instance
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d78bb1be0a6290cb94918b21865a023c01825048
- Skip relative lookup for IOUtil.ClassResources using 'asset' only (from JAR file)
- Tested w/ jar file and build-dir, see scripts/tests.sh 'USE_BUILDDIR'
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sed -i 's/javax\.media\.opengl/com\.jogamp\.opengl/g' `grep -Rl "javax\.media\.opengl" src`
sed -i 's/javax\.media\.nativewindow/com\.jogamp\.nativewindow/g' `grep -Rl "javax\.media\.nativewindow" src`
sed -i 's/javax\/media\//com\/jogamp\//g' `grep -Rl "javax/media/" src`
sed -i 's/javax\/media\//com\/jogamp\//g' `grep -Rl "javax/media/" doc`
Manually edited all occurences within make/**
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bd24599b21f9787ac989e65b44dc1ba762162f22
Commit bd24599b21f9787ac989e65b44dc1ba762162f22 removed font loading w/o TempJarCache,
e.g. as used on Android.
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FontFactory.get(..) exception, we cannot recover in this demo
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628509b39ea7c16210315d191860511d6be4aa69)
FontFactory Remove:
- Font get(final URLConnection conn)
- Font get(final InputStream stream)
FontFactory Add:
- [1] Font get(final InputStream stream, final int streamLen, final boolean closeStream)
- Direct usage of font InputStream w/ determined length,
may instantiate BufferedInputStream in case given stream
doesn't support mark/reset!
- [2] Font get(final InputStream stream, final boolean closeStream)
- Copy font InputStream w/o determined length,
resulting in BufferedInputStream supporting mark/reset!
Security Related:
- Only perform priviledged code on determine InputStream,
_not_ when parsing the font stream itself!
- Hence PrivilegedAction only happens in FontFactory's
InputStream preparation.
Misc:
- Use Uri class
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