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gems: playground for 'Text_painter'
This commit is contained in:
Norman Feske
Christian Helmuth
parent
738b64909e
commit
1784d9ab27
75
repos/gems/run/text_painter.run
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75
repos/gems/run/text_painter.run
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@ -0,0 +1,75 @@
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create_boot_directory
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import_from_depot genodelabs/src/[base_src] \
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genodelabs/pkg/[drivers_interactive_pkg] \
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genodelabs/src/init \
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genodelabs/src/libc \
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genodelabs/src/vfs \
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genodelabs/raw/ttf-bitstream-vera-minimal
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install_config {
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<config>
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<parent-provides>
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<service name="ROM"/>
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<service name="IRQ"/>
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<service name="IO_MEM"/>
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<service name="IO_PORT"/>
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<service name="PD"/>
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<service name="RM"/>
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<service name="CPU"/>
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<service name="LOG"/>
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</parent-provides>
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<default-route>
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<any-service> <parent/> <any-child/> </any-service>
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</default-route>
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<default caps="100"/>
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<start name="timer">
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<resource name="RAM" quantum="1M"/>
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<provides><service name="Timer"/></provides>
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</start>
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<start name="drivers" caps="1000">
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<resource name="RAM" quantum="32M" constrain_phys="yes"/>
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<binary name="init"/>
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<route>
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<service name="ROM" label="config"> <parent label="drivers.config"/> </service>
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<service name="Timer"> <child name="timer"/> </service>
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<any-service> <parent/> </any-service>
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</route>
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<provides>
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<service name="Input"/> <service name="Framebuffer"/>
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</provides>
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</start>
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<start name="font_vfs">
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<binary name="vfs"/>
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<resource name="RAM" quantum="4M"/>
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<provides> <service name="File_system"/> </provides>
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<config>
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<vfs>
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<rom name="VeraMono.ttf"/>
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<dir name="fonts">
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<ttf name="regular" path="/VeraMono.ttf" size_px="48" cache="128K"/>
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</dir>
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</vfs>
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<default-policy root="/fonts" />
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</config>
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</start>
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<start name="test-text_painter">
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<resource name="RAM" quantum="2M"/>
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<config>
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<vfs> <dir name="fonts"> <fs/> </dir> </vfs>
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</config>
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</start>
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</config>}
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build { server/vfs test/text_painter lib/vfs/ttf }
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build_boot_image { vfs test-text_painter vfs_ttf.lib.so }
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run_genode_until forever
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228
repos/gems/src/test/text_painter/main.cc
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228
repos/gems/src/test/text_painter/main.cc
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/*
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* \brief Playground for painting text
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* \author Norman Feske
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* \date 2018-03-08
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*/
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/*
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* Copyright (C) 2018 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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/* Genode includes */
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#include <framebuffer_session/connection.h>
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#include <base/component.h>
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#include <base/attached_rom_dataspace.h>
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#include <base/log.h>
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#include <base/heap.h>
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#include <os/pixel_rgb565.h>
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#include <os/surface.h>
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#include <nitpicker_gfx/tff_font.h>
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#include <nitpicker_gfx/box_painter.h>
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#include <util/bezier.h>
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#include <timer_session/connection.h>
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/* gems includes */
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#include <gems/ttf_font.h>
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#include <gems/vfs.h>
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#include <gems/vfs_font.h>
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#include <gems/cached_font.h>
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namespace Test {
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using namespace Genode;
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typedef Surface_base::Point Point;
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typedef Surface_base::Area Area;
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typedef Surface_base::Rect Rect;
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struct Main;
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};
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/**
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* Statically linked binary data
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*/
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extern char _binary_droidsansb10_tff_start[];
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extern char _binary_default_tff_start[];
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struct Test::Main
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{
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Env &_env;
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Framebuffer::Connection _fb { _env, Framebuffer::Mode() };
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Attached_dataspace _fb_ds { _env.rm(), _fb.dataspace() };
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typedef Pixel_rgb565 PT;
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Surface_base::Area const _size { (unsigned)_fb.mode().width(),
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(unsigned)_fb.mode().height() };
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Surface<PT> _surface { _fb_ds.local_addr<PT>(), _size };
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char _glyph_buffer_array[8*1024];
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Tff_font::Glyph_buffer _glyph_buffer { _glyph_buffer_array, sizeof(_glyph_buffer_array) };
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Tff_font _font_1 { _binary_droidsansb10_tff_start, _glyph_buffer };
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Tff_font _font_2 { _binary_default_tff_start, _glyph_buffer };
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Attached_rom_dataspace _vera_ttf_ds { _env, "Vera.ttf" };
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Heap _heap { _env.ram(), _env.rm() };
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Ttf_font _font_3 { _heap, _vera_ttf_ds.local_addr<void>(), 13 };
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Attached_rom_dataspace _config { _env, "config" };
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Root_directory _root { _env, _heap, _config.xml().sub_node("vfs") };
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Vfs_font _font_4 { _heap, _root, "fonts/regular" };
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void _refresh() { _fb.refresh(0, 0, _size.w(), _size.h()); }
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Main(Env &env) : _env(env)
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{
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/* test positioning of text */
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_surface.clip(Rect(Point(0, 0), _size));
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Box_painter::paint(_surface, Rect(Point(200, 10), Area(250, 50)), Color(0, 100, 0));
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Text_painter::paint(_surface,
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Text_painter::Position(200, 10), _font_1,
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Color(255, 255, 255),
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"Text aligned at the top-left corner");
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Box_painter::paint(_surface, Rect(Point(200, 100), Area(250, 50)), Color(0, 100, 0));
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Text_painter::paint(_surface,
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Text_painter::Position(210, (int)(100 - _font_1.baseline())), _font_1,
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Color(255, 255, 255),
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"Baseline of text aligned at the top");
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/* test horizontal clipping boundaries */
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_surface.clip(Rect(Point(20, 15), Area(40, 300)));
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Box_painter::paint(_surface, Rect(Point(0, 0), _size), Color(150, 20, 10));
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for (int x = 0, y = -30; y < (int)_size.h() + 30; x++, y += _font_2.bounding_box().h())
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Text_painter::paint(_surface,
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Text_painter::Position(x, y), _font_2,
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Color(255, 255, 255),
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"Text painter at work");
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/* test horizontal subpixel positioning */
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_surface.clip(Rect(Point(90, 15), Area(100, 300)));
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Box_painter::paint(_surface, Rect(Point(0, 0), _size), Color(150, 20, 10));
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for (float x = 90, y = -30; y < (int)_size.h() + 30; x += 0.2, y += _font_3.bounding_box().h())
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Text_painter::paint(_surface,
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Text_painter::Position(x, y), _font_3,
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Color(255, 255, 255),
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"This is a real textSub-=_HT-+=%@pixel positioning");
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_surface.clip(Rect(Point(90, 320), Area(100, 300)));
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Box_painter::paint(_surface, Rect(Point(0, 0), _size), Color(255, 255, 255));
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for (float x = 90, y = 300; y < (int)_size.h() + 30; x += 0.2, y += _font_3.bounding_box().h())
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Text_painter::paint(_surface,
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Text_painter::Position(x, y), _font_3,
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Color(0, 0, 0),
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"This is a real textSub-=_HT-+=%@pixel positioning");
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_refresh();
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struct Lut
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{
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unsigned char value[256];
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Lut()
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{
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auto fill_segment = [&] (long x1, long y1, long x2, long)
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{
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for (long i = x1>>8; i < x2>>8; i++) value[i] = min(255, y1>>8);
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};
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bezier(0, 0, 0, 130<<8, 256<<8, 260<<8, fill_segment, 7);
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}
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};
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static Lut const lut;
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_surface.clip(Rect(Point(0, 0), _size));
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for (unsigned x = 0; x < 256; x++)
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Box_painter::paint(_surface,
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Rect(Point(x + 512, 280 - lut.value[x]), Area(1, 1)),
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Color(255, 255, 255));
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_refresh();
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_surface.clip(Rect(Point(0, 0), _size));
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char const *vfs_text_string = "Glyphs obtained from VFS";
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{
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Timer::Connection timer(_env);
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unsigned long const start_us = timer.elapsed_us();
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enum { ITERATIONS = 40 };
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for (int i = 0; i < ITERATIONS; i++)
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Text_painter::paint(_surface,
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Text_painter::Position(260 + (i*133 % 500),
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320 + (i*87 % 400)),
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_font_4, Color(150 + i*73, 0, 200),
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"Glyphs obtained from VFS");
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unsigned long const end_us = timer.elapsed_us();
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unsigned long num_glyphs = strlen(vfs_text_string)*ITERATIONS;
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log("uncached painting: ", (float)(end_us - start_us)/num_glyphs, " us/glyph");
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_refresh();
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}
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for (size_t limit_kib = 32; limit_kib < 192; limit_kib += 16)
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{
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Cached_font cached_font(_heap, _font_4, Cached_font::Limit{limit_kib*1024});
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Timer::Connection timer(_env);
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unsigned long const start_us = timer.elapsed_us();
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/* use less iterations for small cache sizes */
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int const iterations = (limit_kib < 100) ? 200 : 2000;
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for (int i = 0; i < iterations; i++)
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Text_painter::paint(_surface,
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Text_painter::Position(260 + (i*83 % 500),
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320 + (i*153 % 400)),
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cached_font, Color(30, limit_kib, 150 + i*73),
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"Glyphs obtained from VFS");
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unsigned long const end_us = timer.elapsed_us();
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unsigned long num_glyphs = strlen(vfs_text_string)*iterations;
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log("cached painting: ", (float)(end_us - start_us)/num_glyphs, " us/glyph"
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" (", cached_font.stats(), ")");
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_refresh();
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}
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}
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};
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void Component::construct(Genode::Env &env)
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{
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/*
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* The indirect dependency from libc (via ttf_font) introduces a global
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* constructor in the binary. (typeinfo for 'Genode::Exception').
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*
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* XXX Why is this ctors entry generated?
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*/
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env.exec_static_constructors();
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static Test::Main main(env);
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}
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/*
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* Resolve symbol required by libc. It is unused as we implement
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* 'Component::construct' directly instead of initializing the libc.
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*/
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#include <libc/component.h>
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void Libc::Component::construct(Libc::Env &) { }
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8
repos/gems/src/test/text_painter/target.mk
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8
repos/gems/src/test/text_painter/target.mk
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@ -0,0 +1,8 @@
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TARGET = test-text_painter
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SRC_CC = main.cc
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LIBS = base ttf_font vfs
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SRC_BIN += droidsansb10.tff default.tff
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vpath %.tff $(call select_from_repositories,src/app/scout/data)
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vpath %.tff $(call select_from_repositories,src/server/nitpicker)
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