diff --git a/demo/x11_opengl2/Makefile b/demo/x11_opengl2/Makefile new file mode 100644 index 0000000..1173b6c --- /dev/null +++ b/demo/x11_opengl2/Makefile @@ -0,0 +1,26 @@ +# Install +BIN = demo + +# Compiler +CC = clang +DCC = gcc + +# Flags +CFLAGS = -std=c99 -pedantic -O2 + +SRC = main.c +OBJ = $(SRC:.c=.o) + +# Modes +.PHONY: gcc +gcc: CC = gcc +gcc: $(BIN) + +.PHONY: clang +clang: CC = clang +clang: $(BIN) + +$(BIN): + @mkdir -p bin + rm -f bin/$(BIN) $(OBJS) + $(CC) $(SRC) $(CFLAGS) -o bin/$(BIN) -lX11 -lm -lGL -lm -lGLU diff --git a/demo/x11_opengl2/main.c b/demo/x11_opengl2/main.c new file mode 100644 index 0000000..df675cd --- /dev/null +++ b/demo/x11_opengl2/main.c @@ -0,0 +1,304 @@ +/* nuklear - v1.00 - public domain */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#define NK_INCLUDE_FIXED_TYPES +#define NK_INCLUDE_STANDARD_IO +#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_XLIB_GL2_IMPLEMENTATION +#include "../../nuklear.h" +#include "nuklear_xlib_gl2.h" + +#define WINDOW_WIDTH 800 +#define WINDOW_HEIGHT 600 + +#define MAX_VERTEX_BUFFER 512 * 1024 +#define MAX_ELEMENT_BUFFER 128 * 1024 + +#define UNUSED(a) (void)a +#define MIN(a,b) ((a) < (b) ? (a) : (b)) +#define MAX(a,b) ((a) < (b) ? (b) : (a)) +#define LEN(a) (sizeof(a)/sizeof(a)[0]) + +/* =============================================================== + * + * 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 include + * and the corresponding function. */ +/*#include "../style.c"*/ +/*#include "../calculator.c"*/ +/*#include "../overview.c"*/ +/*#include "../node_editor.c"*/ + +/* =============================================================== + * + * DEMO + * + * ===============================================================*/ +struct XWindow { + Display *dpy; + Window win; + XVisualInfo *vis; + Colormap cmap; + XSetWindowAttributes swa; + XWindowAttributes attr; + GLXFBConfig fbc; + int width, height; +}; +static int gl_err = FALSE; +static int gl_error_handler(Display *dpy, XErrorEvent *ev) +{UNUSED((dpy, ev)); gl_err = TRUE;return 0;} + +static void +die(const char *fmt, ...) +{ + va_list ap; + va_start(ap, fmt); + vfprintf(stderr, fmt, ap); + va_end(ap); + fputs("\n", stderr); + exit(EXIT_FAILURE); +} + +static int +has_extension(const char *string, const char *ext) +{ + const char *start, *where, *term; + where = strchr(ext, ' '); + if (where || *ext == '\0') + return FALSE; + + for (start = string;;) { + where = strstr((const char*)start, ext); + if (!where) break; + term = where + strlen(ext); + if (where == start || *(where - 1) == ' ') { + if (*term == ' ' || *term == '\0') + return TRUE; + } + start = term; + } + return FALSE; +} + +int main(int argc, char **argv) +{ + /* Platform */ + int running = 1; + struct XWindow win; + GLXContext glContext; + struct nk_context *ctx; + struct nk_color background; + + memset(&win, 0, sizeof(win)); + win.dpy = XOpenDisplay(NULL); + if (!win.dpy) die("Failed to open X display\n"); + { + /* check glx version */ + int glx_major, glx_minor; + if (!glXQueryVersion(win.dpy, &glx_major, &glx_minor)) + die("[X11]: Error: Failed to query OpenGL version\n"); + if ((glx_major == 1 && glx_minor < 3) || (glx_major < 1)) + die("[X11]: Error: Invalid GLX version!\n"); + } + { + /* find and pick matching framebuffer visual */ + int fb_count; + static GLint attr[] = { + GLX_X_RENDERABLE, True, + GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT, + GLX_RENDER_TYPE, GLX_RGBA_BIT, + GLX_X_VISUAL_TYPE, GLX_TRUE_COLOR, + GLX_RED_SIZE, 8, + GLX_GREEN_SIZE, 8, + GLX_BLUE_SIZE, 8, + GLX_ALPHA_SIZE, 8, + GLX_DEPTH_SIZE, 24, + GLX_STENCIL_SIZE, 8, + GLX_DOUBLEBUFFER, True, + None + }; + GLXFBConfig *fbc; + fbc = glXChooseFBConfig(win.dpy, DefaultScreen(win.dpy), attr, &fb_count); + if (!fbc) die("[X11]: Error: failed to retrieve framebuffer configuration\n"); + { + /* pick framebuffer with most samples per pixel */ + int i; + int fb_best = -1, best_num_samples = -1; + for (i = 0; i < fb_count; ++i) { + XVisualInfo *vi = glXGetVisualFromFBConfig(win.dpy, fbc[i]); + if (vi) { + int sample_buffer, samples; + glXGetFBConfigAttrib(win.dpy, fbc[i], GLX_SAMPLE_BUFFERS, &sample_buffer); + glXGetFBConfigAttrib(win.dpy, fbc[i], GLX_SAMPLES, &samples); + if ((fb_best < 0) || (sample_buffer && samples > best_num_samples)) + fb_best = i; best_num_samples = samples; + } + } + win.fbc = fbc[fb_best]; + XFree(fbc); + win.vis = glXGetVisualFromFBConfig(win.dpy, win.fbc); + } + } + { + /* create window */ + win.cmap = XCreateColormap(win.dpy, RootWindow(win.dpy, win.vis->screen), win.vis->visual, AllocNone); + win.swa.colormap = win.cmap; + win.swa.background_pixmap = None; + win.swa.border_pixel = 0; + win.swa.event_mask = + ExposureMask | KeyPressMask | KeyReleaseMask | + ButtonPress | ButtonReleaseMask| ButtonMotionMask | + Button1MotionMask | Button3MotionMask | Button4MotionMask | Button5MotionMask| + PointerMotionMask| StructureNotifyMask; + win.win = XCreateWindow(win.dpy, RootWindow(win.dpy, win.vis->screen), 0, 0, + WINDOW_WIDTH, WINDOW_HEIGHT, 0, win.vis->depth, InputOutput, + win.vis->visual, CWBorderPixel|CWColormap|CWEventMask, &win.swa); + if (!win.win) die("[X11]: Failed to create window\n"); + XFree(win.vis); + XStoreName(win.dpy, win.win, "Demo"); + XMapWindow(win.dpy, win.win); + } + { + /* create opengl context */ + typedef GLXContext(*glxCreateContext)(Display*, GLXFBConfig, GLXContext, Bool, const int*); + int(*old_handler)(Display*, XErrorEvent*) = XSetErrorHandler(gl_error_handler); + const char *extensions_str = glXQueryExtensionsString(win.dpy, DefaultScreen(win.dpy)); + glxCreateContext create_context = (glxCreateContext) + glXGetProcAddressARB((const GLubyte*)"glXCreateContextAttribsARB"); + + gl_err = FALSE; + if (!has_extension(extensions_str, "GLX_ARB_create_context") || !create_context) { + fprintf(stdout, "[X11]: glXCreateContextAttribARB() not found...\n"); + fprintf(stdout, "[X11]: ... using old-style GLX context\n"); + glContext = glXCreateNewContext(win.dpy, win.fbc, GLX_RGBA_TYPE, 0, True); + } else { + GLint attr[] = { + GLX_CONTEXT_MAJOR_VERSION_ARB, 3, + GLX_CONTEXT_MINOR_VERSION_ARB, 0, + None + }; + glContext = create_context(win.dpy, win.fbc, 0, True, attr); + XSync(win.dpy, False); + if (gl_err || !glContext) { + /* Could not create GL 3.0 context. Fallback to old 2.x context. + * If a version below 3.0 is requested, implementations will + * return the newest context version compatible with OpenGL + * version less than version 3.0.*/ + attr[1] = 1; attr[3] = 0; + gl_err = FALSE; + fprintf(stdout, "[X11] Failed to create OpenGL 3.0 context\n"); + fprintf(stdout, "[X11] ... using old-style GLX context!\n"); + glContext = create_context(win.dpy, win.fbc, 0, True, attr); + } + } + XSync(win.dpy, False); + XSetErrorHandler(old_handler); + if (gl_err || !glContext) + die("[X11]: Failed to create an OpenGL context\n"); + glXMakeCurrent(win.dpy, win.win, glContext); + } + + ctx = nk_x11_init(win.dpy, win.win); + /* Load Fonts: if none of these are loaded a default font will be used */ + {struct nk_font_atlas *atlas; + nk_x11_font_stash_begin(&atlas); + /*struct nk_font *droid = nk_font_atlas_add_from_file(atlas, "../../../extra_font/DroidSans.ttf", 14, 0);*/ + /*struct nk_font *roboto = 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);*/ + nk_x11_font_stash_end(); + /*nk_style_set_font(ctx, &droid->handle);*/} + + /* style.c */ + /*set_style(ctx, THEME_WHITE);*/ + /*set_style(ctx, THEME_RED);*/ + /*set_style(ctx, THEME_BLUE);*/ + /*set_style(ctx, THEME_DARK);*/ + + background = nk_rgb(28,48,62); + while (running) + { + /* Input */ + XEvent evt; + nk_input_begin(ctx); + while (XCheckWindowEvent(win.dpy, win.win, win.swa.event_mask, &evt)){ + if (XFilterEvent(&evt, win.win)) continue; + nk_x11_handle_event(&evt); + } + nk_input_end(ctx); + + /* GUI */ + {struct nk_panel layout; + if (nk_begin(ctx, &layout, "Demo", nk_rect(50, 50, 200, 200), + NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_SCALABLE| + NK_WINDOW_CLOSABLE|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", NK_BUTTON_DEFAULT)) + 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_end(ctx);} + if (nk_window_is_closed(ctx, "Demo")) break; + + /* -------------- EXAMPLES ---------------- */ + /*calculator(ctx);*/ + /*overview(ctx);*/ + /*node_editor(ctx);*/ + /* ----------------------------------------- */ + + /* Draw */ + {float bg[4]; + nk_color_fv(bg, background); + XGetWindowAttributes(win.dpy, win.win, &win.attr); + glViewport(0, 0, win.width, win.height); + glClear(GL_COLOR_BUFFER_BIT); + glClearColor(bg[0], bg[1], bg[2], bg[3]); + /* IMPORTANT: `nk_x11_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_x11_render(NK_ANTI_ALIASING_ON, MAX_VERTEX_BUFFER, MAX_ELEMENT_BUFFER); + glXSwapBuffers(win.dpy, win.win);} + } + + nk_x11_shutdown(); + glXMakeCurrent(win.dpy, 0, 0); + glXDestroyContext(win.dpy, glContext); + XUnmapWindow(win.dpy, win.win); + XFreeColormap(win.dpy, win.cmap); + XDestroyWindow(win.dpy, win.win); + XCloseDisplay(win.dpy); + return 0; + +} diff --git a/demo/x11_opengl2/nuklear_xlib_gl2.h b/demo/x11_opengl2/nuklear_xlib_gl2.h new file mode 100644 index 0000000..1d537b1 --- /dev/null +++ b/demo/x11_opengl2/nuklear_xlib_gl2.h @@ -0,0 +1,294 @@ +/* + * Nuklear - v1.00 - public domain + * no warrenty implied; use at your own risk. + * authored from 2015-2016 by Micha Mettke + */ +/* + * ============================================================== + * + * API + * + * =============================================================== + */ +#ifndef NK_XLIB_GL3_H_ +#define NK_XLIB_GL3_H_ + +#include +NK_API struct nk_context* nk_x11_init(Display *dpy, Window win); +NK_API void nk_x11_font_stash_begin(struct nk_font_atlas **atlas); +NK_API void nk_x11_font_stash_end(void); +NK_API void nk_x11_handle_event(XEvent *evt); +NK_API void nk_x11_render(enum nk_anti_aliasing, int max_vertex_buffer, int max_element_buffer); +NK_API void nk_x11_shutdown(void); + +#endif +/* + * ============================================================== + * + * IMPLEMENTATION + * + * =============================================================== + */ +#ifdef NK_XLIB_GL2_IMPLEMENTATION +#include +#include +#include + +#include +#include +#include +#include + +#include + +#ifndef FALSE +#define FALSE 0 +#endif +#ifndef TRUE +#define TRUE 1 +#endif + +struct nk_x11_device { + struct nk_buffer cmds; + struct nk_draw_null_texture null; + GLuint font_tex; +}; + +static struct nk_x11 { + struct nk_x11_device ogl; + struct nk_context ctx; + struct nk_font_atlas atlas; + Display *dpy; + Window win; +} x11; + +NK_INTERN void +nk_x11_device_upload_atlas(const void *image, int width, int height) +{ + struct nk_x11_device *dev = &x11.ogl; + glGenTextures(1, &dev->font_tex); + glBindTexture(GL_TEXTURE_2D, dev->font_tex); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0, + GL_RGBA, GL_UNSIGNED_BYTE, image); +} + +NK_API void +nk_x11_render(enum nk_anti_aliasing AA, int max_vertex_buffer, int max_element_buffer) +{ + /* setup global state */ + struct nk_x11_device *dev = &x11.ogl; + int width, height; + + XWindowAttributes attr; + XGetWindowAttributes(x11.dpy, x11.win, &attr); + width = attr.width; + height = attr.height; + + glPushAttrib(GL_ENABLE_BIT|GL_COLOR_BUFFER_BIT|GL_TRANSFORM_BIT); + glDisable(GL_CULL_FACE); + glDisable(GL_DEPTH_TEST); + glEnable(GL_SCISSOR_TEST); + glEnable(GL_BLEND); + glEnable(GL_TEXTURE_2D); + glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); + + /* setup viewport/project */ + glViewport(0,0,(GLsizei)width,(GLsizei)height); + glMatrixMode(GL_PROJECTION); + glPushMatrix(); + glLoadIdentity(); + glOrtho(0.0f, width, height, 0.0f, -1.0f, 1.0f); + glMatrixMode(GL_MODELVIEW); + glPushMatrix(); + glLoadIdentity(); + + glEnableClientState(GL_VERTEX_ARRAY); + glEnableClientState(GL_TEXTURE_COORD_ARRAY); + glEnableClientState(GL_COLOR_ARRAY); + { + GLsizei vs = sizeof(struct nk_draw_vertex); + size_t vp = offsetof(struct nk_draw_vertex, position); + size_t vt = offsetof(struct nk_draw_vertex, uv); + size_t vc = offsetof(struct nk_draw_vertex, col); + + /* convert from command queue into draw list and draw to screen */ + const struct nk_draw_command *cmd; + const nk_draw_index *offset = NULL; + struct nk_buffer vbuf, ebuf; + + /* fill converting configuration */ + struct nk_convert_config config; + memset(&config, 0, sizeof(config)); + config.global_alpha = 1.0f; + config.shape_AA = AA; + config.line_AA = AA; + config.circle_segment_count = 22; + config.curve_segment_count = 22; + config.arc_segment_count = 22; + config.null = dev->null; + + /* convert shapes into vertexes */ + nk_buffer_init_default(&vbuf); + nk_buffer_init_default(&ebuf); + nk_convert(&x11.ctx, &dev->cmds, &vbuf, &ebuf, &config); + + /* setup vertex buffer pointer */ + {const void *vertices = nk_buffer_memory_const(&vbuf); + glVertexPointer(2, GL_FLOAT, vs, (const void*)((const nk_byte*)vertices + vp)); + glTexCoordPointer(2, GL_FLOAT, vs, (const void*)((const nk_byte*)vertices + vt)); + glColorPointer(4, GL_UNSIGNED_BYTE, vs, (const void*)((const nk_byte*)vertices + vc));} + + /* iterate over and execute each draw command */ + offset = (const nk_draw_index*)nk_buffer_memory_const(&ebuf); + nk_draw_foreach(cmd, &x11.ctx, &dev->cmds) + { + if (!cmd->elem_count) continue; + glBindTexture(GL_TEXTURE_2D, (GLuint)cmd->texture.id); + glScissor( + (GLint)(cmd->clip_rect.x), + (GLint)((height - (GLint)(cmd->clip_rect.y + cmd->clip_rect.h))), + (GLint)(cmd->clip_rect.w), + (GLint)(cmd->clip_rect.h)); + glDrawElements(GL_TRIANGLES, (GLsizei)cmd->elem_count, GL_UNSIGNED_SHORT, offset); + offset += cmd->elem_count; + } + nk_clear(&x11.ctx); + nk_buffer_free(&vbuf); + nk_buffer_free(&ebuf); + } + + /* default OpenGL state */ + glDisableClientState(GL_VERTEX_ARRAY); + glDisableClientState(GL_TEXTURE_COORD_ARRAY); + glDisableClientState(GL_COLOR_ARRAY); + + glDisable(GL_CULL_FACE); + glDisable(GL_DEPTH_TEST); + glDisable(GL_SCISSOR_TEST); + glDisable(GL_BLEND); + glDisable(GL_TEXTURE_2D); + + glBindTexture(GL_TEXTURE_2D, 0); + glMatrixMode(GL_MODELVIEW); + glPopMatrix(); + glMatrixMode(GL_PROJECTION); + glPopMatrix(); + glPopAttrib(); + +} + +NK_API void +nk_x11_font_stash_begin(struct nk_font_atlas **atlas) +{ + nk_font_atlas_init_default(&x11.atlas); + nk_font_atlas_begin(&x11.atlas); + *atlas = &x11.atlas; +} + +NK_API void +nk_x11_font_stash_end(void) +{ + const void *image; int w, h; + image = nk_font_atlas_bake(&x11.atlas, &w, &h, NK_FONT_ATLAS_RGBA32); + nk_x11_device_upload_atlas(image, w, h); + nk_font_atlas_end(&x11.atlas, nk_handle_id((int)x11.ogl.font_tex), &x11.ogl.null); + if (x11.atlas.default_font) + nk_style_set_font(&x11.ctx, &x11.atlas.default_font->handle); +} + +NK_API void +nk_x11_handle_event(XEvent *evt) +{ + struct nk_context *ctx = &x11.ctx; + if (evt->type == KeyPress || evt->type == KeyRelease) + { + /* Key handler */ + int ret, down = (evt->type == KeyPress); + KeySym *code = XGetKeyboardMapping(x11.dpy, (KeyCode)evt->xkey.keycode, 1, &ret); + if (*code == XK_Shift_L || *code == XK_Shift_R) nk_input_key(ctx, NK_KEY_SHIFT, down); + else if (*code == XK_Delete) nk_input_key(ctx, NK_KEY_DEL, down); + else if (*code == XK_Return) nk_input_key(ctx, NK_KEY_ENTER, down); + else if (*code == XK_Tab) nk_input_key(ctx, NK_KEY_TAB, down); + else if (*code == XK_Left) nk_input_key(ctx, NK_KEY_LEFT, down); + else if (*code == XK_Right) nk_input_key(ctx, NK_KEY_RIGHT, down); + else if (*code == XK_BackSpace) nk_input_key(ctx, NK_KEY_BACKSPACE, down); + else if (*code == XK_Home) nk_input_key(ctx, NK_KEY_TEXT_START, down); + else if (*code == XK_End) nk_input_key(ctx, NK_KEY_TEXT_END, down); + else if (*code == XK_space && !down) nk_input_char(ctx, ' '); + else { + if (*code == 'c' && (evt->xkey.state & ControlMask)) + nk_input_key(ctx, NK_KEY_COPY, down); + else if (*code == 'v' && (evt->xkey.state & ControlMask)) + nk_input_key(ctx, NK_KEY_PASTE, down); + else if (*code == 'x' && (evt->xkey.state & ControlMask)) + nk_input_key(ctx, NK_KEY_CUT, down); + else if (*code == 'z' && (evt->xkey.state & ControlMask)) + nk_input_key(ctx, NK_KEY_TEXT_UNDO, down); + else if (*code == 'r' && (evt->xkey.state & ControlMask)) + nk_input_key(ctx, NK_KEY_TEXT_REDO, down); + else if (*code == XK_Left && (evt->xkey.state & ControlMask)) + nk_input_key(ctx, NK_KEY_TEXT_WORD_LEFT, down); + else if (*code == XK_Right && (evt->xkey.state & ControlMask)) + nk_input_key(ctx, NK_KEY_TEXT_WORD_RIGHT, down); + else if (*code == 'b' && (evt->xkey.state & ControlMask)) + nk_input_key(ctx, NK_KEY_TEXT_LINE_START, down); + else if (*code == 'e' && (evt->xkey.state & ControlMask)) + nk_input_key(ctx, NK_KEY_TEXT_LINE_END, down); + else if (!down) { + char buf[32]; + KeySym keysym = 0; + if (XLookupString((XKeyEvent*)evt, buf, 32, &keysym, NULL) != NoSymbol) + nk_input_glyph(ctx, buf); + } + } + XFree(code); + } else if (evt->type == ButtonPress || evt->type == ButtonRelease) { + /* Button handler */ + int down = (evt->type == ButtonPress); + const int x = evt->xbutton.x, y = evt->xbutton.y; + if (evt->xbutton.button == Button1) + nk_input_button(ctx, NK_BUTTON_LEFT, x, y, down); + if (evt->xbutton.button == Button2) + nk_input_button(ctx, NK_BUTTON_MIDDLE, x, y, down); + else if (evt->xbutton.button == Button3) + nk_input_button(ctx, NK_BUTTON_RIGHT, x, y, down); + else if (evt->xbutton.button == Button4) + nk_input_scroll(ctx, 1.0f); + else if (evt->xbutton.button == Button5) + nk_input_scroll(ctx, -1.0f); + + } else if (evt->type == MotionNotify) { + /* Mouse motion handler */ + const int x = evt->xmotion.x, y = evt->xmotion.y; + nk_input_motion(ctx, x, y); + } else if (evt->type == KeymapNotify) + XRefreshKeyboardMapping(&evt->xmapping); +} + +NK_API struct nk_context* +nk_x11_init(Display *dpy, Window win) +{ + if (!setlocale(LC_ALL,"")) return 0; + if (!XSupportsLocale()) return 0; + if (!XSetLocaleModifiers("@im=none")) return 0; + x11.dpy = dpy; + x11.win = win; + nk_buffer_init_default(&x11.ogl.cmds); + nk_init_default(&x11.ctx, 0); + return &x11.ctx; +} + +NK_API void +nk_x11_shutdown(void) +{ + struct nk_x11_device *dev = &x11.ogl; + nk_font_atlas_clear(&x11.atlas); + nk_free(&x11.ctx); + glDeleteTextures(1, &dev->font_tex); + nk_buffer_free(&dev->cmds); + memset(&x11, 0, sizeof(x11)); +} + +#endif