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#1 2018-02-18 10:45:12

daydayup
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【github项目】又发现一个轻量级开源UI nuklear,酷炫界面,支持矢量字体。

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#2 2018-02-18 18:23:53

晕哥
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Re: 【github项目】又发现一个轻量级开源UI nuklear,酷炫界面,支持矢量字体。

这个看来很不错哦,
试一试编译一个demo.


sudo apt-get install libglew-dev

sudo apt-get install libglfw3-dev

发现ubuntu14.04 不能安装 libglfw3-dev

hexing@ubuntu:/disk2/licheepi/u-boot$ sudo apt-get install libglfw3-dev
[sudo] password for hexing:
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package libglfw3-dev

看来只能下载源码自己编译安装了。

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#3 2018-02-18 18:29:43

晕哥
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Re: 【github项目】又发现一个轻量级开源UI nuklear,酷炫界面,支持矢量字体。

sudo apt-get install cmake

cd /tmp
git clone https://github.com/glfw/glfw.git
cd glfw
cmake CMakeLists.txt
make
sudo make install

按上面的步骤把glfw3安装搞定.

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#4 2018-02-18 18:31:45

晕哥
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Re: 【github项目】又发现一个轻量级开源UI nuklear,酷炫界面,支持矢量字体。

yunge@ubuntu:/tmp/nuklear/example$ make
cc -std=c99 -pedantic -O2 -o bin/file_browser file_browser.c -L/usr/local/lib -lglfw3   -lGL -lm -lGLU -lGLEW
/usr/bin/ld: /usr/local/lib/libglfw3.a(x11_window.c.o): undefined reference to symbol 'XConvertSelection'
//usr/lib/x86_64-linux-gnu/libX11.so.6: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
make: *** [file_browser] Error 1

真是个悲剧,链接错误, 找不到XConvertSelection函数。

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#5 2018-02-18 18:38:16

晕哥
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Re: 【github项目】又发现一个轻量级开源UI nuklear,酷炫界面,支持矢量字体。

放狗一搜,找个一个链接: undefined-references-compiling-opengl-glfw-glew-on-ubuntu

第15行改成:

LIBS := $(GLFW3) -lGL -lm -lGLU -lGLEW -lGLEW -lglfw3 -lGL -lX11 -lXi -lXrandr -lXxf86vm -lXinerama -lXcursor -lrt -lm -pthread -ldl

搞定编译:

yunge@ubuntu:/tmp/nuklear/example$ make
cc -std=c99 -pedantic -O2 -o bin/file_browser file_browser.c -L/usr/local/lib -lglfw3   -lGL -lm -lGLU -lGLEW -lGLEW -lglfw3 -lGL -lX11 -lXi -lXrandr -lXxf86vm -lXinerama -lXcursor -lrt -lm -pthread -ldl
cc -std=c99 -pedantic -O2 -o bin/extended extended.c -L/usr/local/lib -lglfw3   -lGL -lm -lGLU -lGLEW -lGLEW -lglfw3 -lGL -lX11 -lXi -lXrandr -lXxf86vm -lXinerama -lXcursor -lrt -lm -pthread -ldl
cc -std=c99 -pedantic -O2 -o bin/canvas canvas.c -L/usr/local/lib -lglfw3   -lGL -lm -lGLU -lGLEW -lGLEW -lglfw3 -lGL -lX11 -lXi -lXrandr -lXxf86vm -lXinerama -lXcursor -lrt -lm -pthread -ldl
cc -std=c99 -pedantic -O2 -o bin/skinning skinning.c -L/usr/local/lib -lglfw3   -lGL -lm -lGLU -lGLEW -lGLEW -lglfw3 -lGL -lX11 -lXi -lXrandr -lXxf86vm -lXinerama -lXcursor -lrt -lm -pthread -ldl

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#6 2018-02-18 18:40:51

晕哥
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Re: 【github项目】又发现一个轻量级开源UI nuklear,酷炫界面,支持矢量字体。

yunge@ubuntu:/disk2/nuklear/example$ bin/canvas
Error 65543: GLX: Failed to create context: GLXBadFBConfig
canvas: /tmp/glfw/src/window.c:944: glfwSetWindowUserPointer: Assertion `window != ((void *)0)' failed.
Aborted (core dumped)
yunge@ubuntu:/disk2/nuklear/example$ bin/extended
Error 65543: GLX: Failed to create context: GLXBadFBConfig
extended: /tmp/glfw/src/window.c:944: glfwSetWindowUserPointer: Assertion `window != ((void *)0)' failed.
Aborted (core dumped)
yunge@ubuntu:/disk2/nuklear/example$ bin/
canvas        extended      file_browser  skinning     
yunge@ubuntu:/disk2/nuklear/example$ bin/skinning
Error 65543: GLX: Failed to create context: GLXBadFBConfig
skinning: /tmp/glfw/src/window.c:944: glfwSetWindowUserPointer: Assertion `window != ((void *)0)' failed.
Aborted (core dumped)
yunge@ubuntu:/disk2/nuklear/example$ bin/file_browser
Error 65543: GLX: Failed to create context: GLXBadFBConfig
file_browser: /tmp/glfw/src/window.c:944: glfwSetWindowUserPointer: Assertion `window != ((void *)0)' failed.
Aborted (core dumped)

运行悲剧了. 出现一个断言错误。接着debug

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#7 2018-02-18 18:48:40

晕哥
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Re: 【github项目】又发现一个轻量级开源UI nuklear,酷炫界面,支持矢量字体。

sudo apt-get install mesa-utils

example$ glxinfo | grep 'version'
server glx version string: 1.4
client glx version string: 1.4
GLX version: 1.4
OpenGL version string: 2.1 Mesa 11.0.2
OpenGL shading language version string: 1.20

发现一个同病相怜的人:  https://github.com/vurtun/nuklear/issues/364

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#8 2018-02-18 18:56:17

晕哥
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Re: 【github项目】又发现一个轻量级开源UI nuklear,酷炫界面,支持矢量字体。

柳暗花明又一村,终于找到解决方案了: https://github.com/skeeto/opengl-demo

如果您的GPU不支持OpenGL 3.3并且您使用Mesa 10.0+,则可以使用环境变量强制渲染软件 LIBGL_ALWAYS_SOFTWARE=1。

把环境变量强制加上,终于搞定这个棘手的问题:

yunge@ubuntu:/tmp/nuklear/example/bin$ LIBGL_ALWAYS_SOFTWARE=1 ./extended
piemenu selected: 4
pushed!
piemenu selected: 4
piemenu selected: 4
piemenu selected: 4

有图有真相:
QQ20180218185909.png

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#9 2018-02-18 19:15:35

晕哥
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Re: 【github项目】又发现一个轻量级开源UI nuklear,酷炫界面,支持矢量字体。

https://github.com/skeeto/opengl-demo
这个作者建议换掉 glfw3, 改用sdl

备择方案

gl3w的一个很好的选择是glLoadGen,它几乎可以直接丢弃。GLEW既大得多,也不支持核心配置文件或一般3.2+,所以它不是现代OpenGL的选项。

对于GLFW来说,一个合理的替代方法是SDL 2.0,它更大,并且带来更多的功能,例如音频,线程和字体渲染,如果您需要它的话。

littlevgl PC上用的方案就是SDL.

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#10 2018-02-19 10:01:33

晕哥
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Re: 【github项目】又发现一个轻量级开源UI nuklear,酷炫界面,支持矢量字体。

QQ20180219100039.png
可以用QtCreator单步调试.

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#11 2018-02-20 13:20:02

晕哥
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Re: 【github项目】又发现一个轻量级开源UI nuklear,酷炫界面,支持矢量字体。

QQ20180220131557.png

居然支持VC直接编译运行调试,
VC2010编译会出错, VC2013以上版本是可以的。

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#12 2018-02-20 21:12:03

晕哥
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Re: 【github项目】又发现一个轻量级开源UI nuklear,酷炫界面,支持矢量字体。

QQ20180220210526.png

新建VC2013工程, 在main.c 里面把几个demo开关全部开启

#define [ins]INCLUDE_ALL[/ins]

会出现一个一个编译错误:

错误    22    error LNK2019: 无法解析的外部符号 _snprintf,该符号在函数 _calculator 中被引用C:\projects\nuklear\demo\gdi\main.obj    gdi

解决方法:
修改calculator.c

snprintf() 改为  ==> _snprintf()

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#13 2018-02-21 07:40:17

晕哥
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Re: 【github项目】又发现一个轻量级开源UI nuklear,酷炫界面,支持矢量字体。

编译glfw3 demo:

glfw_opengl3$ make
rm -f bin/demo
cc main.c -std=c99 -pedantic -O2 -o bin/demo -L/usr/local/lib -lglfw3   -lGL -lm -lGLU -lGLEW
/usr/bin/ld: /usr/local/lib/libglfw3.a(x11_window.c.o): undefined reference to symbol 'XConvertSelection'
//usr/lib/x86_64-linux-gnu/libX11.so.6: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
make: *** [demo] Error 1

glfw_opengl3 出现链接错误, 修改方法和5楼一样:

# Install
BIN = demo

# Flags
CFLAGS += -std=c99 -pedantic -O2

SRC = main.c
OBJ = $(SRC:.c=.o)

ifeq ($(OS),Windows_NT)
BIN := $(BIN).exe
LIBS = -lglfw3 -lopengl32 -lm -lGLU32 -lGLEW32
else
    UNAME_S := $(shell uname -s)
    GLFW3 := $(shell pkg-config --libs glfw3)
    ifeq ($(UNAME_S),Darwin)
        LIBS := $(GLFW3) -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo -lm -lGLEW -L/usr/local/lib
    else
        LIBS = $(GLFW3) -lGL -lm -lGLU -lGLEW  -lGLEW -lglfw3 -lGL -lX11 -lXi -lXrandr -lXxf86vm -lXinerama -lXcursor -lrt -lm -pthread -ldl
    endif
endif

$(BIN):
    @mkdir -p bin
    rm -f bin/$(BIN) $(OBJS)
    $(CC) $(SRC) $(CFLAGS) -o bin/$(BIN) $(LIBS)

运行方法和前面一样

glfw_opengl3$ bin/demo
Error 65543: GLX: Failed to create context: GLXBadFBConfig
demo: /tmp/glfw/src/window.c:539: glfwGetWindowSize: Assertion `window != ((void *)0)' failed.
Aborted (core dumped)
glfw_opengl3$
glfw_opengl3$ LIBGL_ALWAYS_SOFTWARE=1 bin/demo

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#14 2018-02-21 09:17:36

晕哥
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Re: 【github项目】又发现一个轻量级开源UI nuklear,酷炫界面,支持矢量字体。

/* nuklear - 1.32.0 - public domain */
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdarg.h>
#include <string.h>
#include <math.h>
#include <assert.h>
#include <math.h>
#include <limits.h>
#include <time.h>

#include <GL/glew.h>
#include <GLFW/glfw3.h>

#define NK_INCLUDE_FIXED_TYPES
#define NK_INCLUDE_STANDARD_IO
#define NK_INCLUDE_STANDARD_VARARGS
#define NK_INCLUDE_DEFAULT_ALLOCATOR
#define NK_INCLUDE_VERTEX_BUFFER_OUTPUT
#define NK_INCLUDE_FONT_BAKING
#define NK_INCLUDE_DEFAULT_FONT
#define NK_IMPLEMENTATION
#define NK_GLFW_GL3_IMPLEMENTATION
#include "../../nuklear.h"
#include "nuklear_glfw_gl3.h"

#define WINDOW_WIDTH 1200
#define WINDOW_HEIGHT 800

#define MAX_VERTEX_BUFFER 512 * 1024
#define MAX_ELEMENT_BUFFER 128 * 1024

/* ===============================================================
 *
 *                          EXAMPLE
 *
 * ===============================================================*/
/* This are some code examples to provide a small overview of what can be
 * done with this library. To try out an example uncomment the defines */
/*#define INCLUDE_ALL */
/*#define INCLUDE_STYLE */
/*#define INCLUDE_CALCULATOR */
/*#define INCLUDE_OVERVIEW */
/*#define INCLUDE_NODE_EDITOR */

#ifdef INCLUDE_ALL
  #define INCLUDE_STYLE
  #define INCLUDE_CALCULATOR
  #define INCLUDE_OVERVIEW
  #define INCLUDE_NODE_EDITOR
#endif

#ifdef INCLUDE_STYLE
  #include "../style.c"
#endif
#ifdef INCLUDE_CALCULATOR
  #include "../calculator.c"
#endif
#ifdef INCLUDE_OVERVIEW
  #include "../overview.c"
#endif
#ifdef INCLUDE_NODE_EDITOR
  #include "../node_editor.c"
#endif

/* ===============================================================
 *
 *                          DEMO
 *
 * ===============================================================*/
static void error_callback(int e, const char *d)
{printf("Error %d: %s\n", e, d);}

int main(void)
{
    /* Platform */
    static GLFWwindow *win;
    int width = 0, height = 0;
    struct nk_context *ctx;
    struct nk_colorf bg;

    /* GLFW */
    glfwSetErrorCallback(error_callback);
    if (!glfwInit()) {
        fprintf(stdout, "[GFLW] failed to init!\n");
        exit(1);
    }
    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
#ifdef __APPLE__
    glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
#endif
    win = glfwCreateWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "Demo", NULL, NULL);
    glfwMakeContextCurrent(win);
    glfwGetWindowSize(win, &width, &height);

    /* OpenGL */
    glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
    glewExperimental = 1;
    if (glewInit() != GLEW_OK) {
        fprintf(stderr, "Failed to setup GLEW\n");
        exit(1);
    }

    ctx = nk_glfw3_init(win, NK_GLFW3_INSTALL_CALLBACKS);
    /* Load Fonts: if none of these are loaded a default font will be used  */
    /* Load Cursor: if you uncomment cursor loading please hide the cursor */
    {struct nk_font_atlas *atlas;
    nk_glfw3_font_stash_begin(&atlas);
        struct nk_font_config cfg = nk_font_config(22);
        //cfg.merge_mode = nk_true;
        cfg.range = nk_font_chinese_glyph_ranges();
        //cfg.coord_type = NK_COORD_PIXEL;
        struct nk_font *font = nk_font_atlas_add_from_file(atlas, "../../../extra_font/msyh.ttf", 13, &cfg);

    nk_glfw3_font_stash_end();
    nk_style_set_font(ctx, &font->handle);
	}

    #ifdef INCLUDE_STYLE
    /*set_style(ctx, THEME_WHITE);*/
    /*set_style(ctx, THEME_RED);*/
    /*set_style(ctx, THEME_BLUE);*/
    /*set_style(ctx, THEME_DARK);*/
    #endif

    bg.r = 0.10f, bg.g = 0.18f, bg.b = 0.24f, bg.a = 1.0f;
    while (!glfwWindowShouldClose(win))
    {
        /* Input */
        glfwPollEvents();
        nk_glfw3_new_frame();

        /* GUI */
        if (nk_begin(ctx, "中文", nk_rect(50, 50, 230, 250),
            NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE|
            NK_WINDOW_MINIMIZABLE|NK_WINDOW_TITLE))
        {
            enum {EASY, HARD};
            static int op = EASY;
            static int property = 20;
            nk_layout_row_static(ctx, 30, 80, 1);
            if (nk_button_label(ctx, "button"))
                fprintf(stdout, "button pressed\n");

            nk_layout_row_dynamic(ctx, 30, 2);
            if (nk_option_label(ctx, "easy", op == EASY)) op = EASY;
            if (nk_option_label(ctx, "hard", op == HARD)) op = HARD;

            nk_layout_row_dynamic(ctx, 25, 1);
            nk_property_int(ctx, "Compression:", 0, &property, 100, 10, 1);

            nk_layout_row_dynamic(ctx, 20, 1);
            nk_label(ctx, "background:", NK_TEXT_LEFT);
            nk_layout_row_dynamic(ctx, 25, 1);
            if (nk_combo_begin_color(ctx, nk_rgb_cf(bg), nk_vec2(nk_widget_width(ctx),400))) {
                nk_layout_row_dynamic(ctx, 120, 1);
                bg = nk_color_picker(ctx, bg, NK_RGBA);
                nk_layout_row_dynamic(ctx, 25, 1);
                bg.r = nk_propertyf(ctx, "#R:", 0, bg.r, 1.0f, 0.01f,0.005f);
                bg.g = nk_propertyf(ctx, "#G:", 0, bg.g, 1.0f, 0.01f,0.005f);
                bg.b = nk_propertyf(ctx, "#B:", 0, bg.b, 1.0f, 0.01f,0.005f);
                bg.a = nk_propertyf(ctx, "#A:", 0, bg.a, 1.0f, 0.01f,0.005f);
                nk_combo_end(ctx);
            }
        }
        nk_end(ctx);

        /* -------------- EXAMPLES ---------------- */
        #ifdef INCLUDE_CALCULATOR
          calculator(ctx);
        #endif
        #ifdef INCLUDE_OVERVIEW
          overview(ctx);
        #endif
        #ifdef INCLUDE_NODE_EDITOR
          node_editor(ctx);
        #endif
        /* ----------------------------------------- */

        /* Draw */
        glfwGetWindowSize(win, &width, &height);
        glViewport(0, 0, width, height);
        glClear(GL_COLOR_BUFFER_BIT);
        glClearColor(bg.r, bg.g, bg.b, bg.a);
        /* IMPORTANT: `nk_glfw_render` modifies some global OpenGL state
         * with blending, scissor, face culling, depth test and viewport and
         * defaults everything back into a default state.
         * Make sure to either a.) save and restore or b.) reset your own state after
         * rendering the UI. */
        nk_glfw3_render(NK_ANTI_ALIASING_ON, MAX_VERTEX_BUFFER, MAX_ELEMENT_BUFFER);
        glfwSwapBuffers(win);
    }
    nk_glfw3_shutdown();
    glfwTerminate();
    return 0;
}

QQ20180221091620.png
修改几行代码,可以显示中文了, 但是用msyh字体只能12, 如果设置其它型号窗口就是黑的, 不知道为什么?

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#15 2018-02-21 20:00:11

daydayup
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Re: 【github项目】又发现一个轻量级开源UI nuklear,酷炫界面,支持矢量字体。

请问一下,这个gui适合移植到单片机系统吗?

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#16 2018-02-21 20:03:34

晕哥
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Re: 【github项目】又发现一个轻量级开源UI nuklear,酷炫界面,支持矢量字体。

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#17 2018-02-22 05:56:08

晕哥
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Re: 【github项目】又发现一个轻量级开源UI nuklear,酷炫界面,支持矢量字体。

QQ20180222054457.png

QQ20180222054727.png

测试了以下d3d11 demo,发现字体 1-19都可以运行正常, 20就不行了

/* GUI */
    ctx = nk_d3d11_init(device, WINDOW_WIDTH, WINDOW_HEIGHT, MAX_VERTEX_BUFFER, MAX_INDEX_BUFFER);
    /* Load Fonts: if none of these are loaded a default font will be used  */
    /* Load Cursor: if you uncomment cursor loading please hide the cursor */
    {struct nk_font_atlas *atlas;
    nk_d3d11_font_stash_begin(&atlas);
    /*struct nk_font *droid = nk_font_atlas_add_from_file(atlas, "../../extra_font/DroidSans.ttf", 14, 0);*/
    /*struct nk_font *robot = nk_font_atlas_add_from_file(atlas, "../../extra_font/Roboto-Regular.ttf", 14, 0);*/
    /*struct nk_font *future = nk_font_atlas_add_from_file(atlas, "../../extra_font/kenvector_future_thin.ttf", 13, 0);*/
    /*struct nk_font *clean = nk_font_atlas_add_from_file(atlas, "../../extra_font/ProggyClean.ttf", 12, 0);*/
    /*struct nk_font *tiny = nk_font_atlas_add_from_file(atlas, "../../extra_font/ProggyTiny.ttf", 10, 0);*/
    /*struct nk_font *cousine = nk_font_atlas_add_from_file(atlas, "../../extra_font/Cousine-Regular.ttf", 13, 0);*/

    struct nk_font_config cfg = nk_font_config(19);
    cfg.merge_mode = nk_false;
    cfg.oversample_h = 1;
    cfg.oversample_v = 1;
    cfg.range = nk_font_chinese_glyph_ranges();
    cfg.coord_type = NK_COORD_UV;
    struct nk_font *font = nk_font_atlas_add_from_file(atlas, "msyh.ttf", 19, &cfg);

    nk_d3d11_font_stash_end();
    /*nk_style_load_all_cursors(ctx, atlas->cursors);*/
    /*nk_style_set_font(ctx, &droid->handle)*/;
    nk_style_set_font(ctx, &font->handle);
    }

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#18 2018-02-22 06:00:01

晕哥
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Re: 【github项目】又发现一个轻量级开源UI nuklear,酷炫界面,支持矢量字体。

QQ20180222054727.png

奇怪了,30, 35字体都没问题, 40不行。

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#19 2018-03-22 14:51:41

kgp0213
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Re: 【github项目】又发现一个轻量级开源UI nuklear,酷炫界面,支持矢量字体。

晕哥这个厉害了

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#20 2018-03-23 13:14:15

kgp0213
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注册时间: 2018-01-15
累计发帖: 142

Re: 【github项目】又发现一个轻量级开源UI nuklear,酷炫界面,支持矢量字体。

晕哥 说:

柳暗花明又一村,终于找到解决方案了: https://github.com/skeeto/opengl-demo

如果您的GPU不支持OpenGL 3.3并且您使用Mesa 10.0+,则可以使用环境变量强制渲染软件 LIBGL_ALWAYS_SOFTWARE=1。

把环境变量强制加上,终于搞定这个棘手的问题:

yunge@ubuntu:/tmp/nuklear/example/bin$ LIBGL_ALWAYS_SOFTWARE=1 ./extended
piemenu selected: 4
pushed!
piemenu selected: 4
piemenu selected: 4
piemenu selected: 4

有图有真相:
https://debugdump.com/files/members/3/QQ20180218185909.png


补充一下顺序,
安装(ubuntu 16环境):
sudo apt install libglew-dev
sudo apt install libglfw3-dev
(很遗憾,这两部没有碰到任何问题,开心脸.jpeg)
下载https://github.com/vurtun/nuklear.git
进入~/nuklear/example 目录
make
进入  ~/nuklear/example/bin$
~/nuklear/example/bin$ ./extended
demo画面应该就出来了

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