graphics_egl.c File Reference

#include <glib.h>
#include <unistd.h>
#include <math.h>
#include <stdio.h>
#include <time.h>
#include "item.h"
#include "attr.h"
#include "config.h"
#include "point.h"
#include "graphics.h"
#include "color.h"
#include "plugin.h"
#include "event.h"
#include "debug.h"
#include "callback.h"
#include "keys.h"
#include "window.h"
#include "navit/font/freetype/font_freetype.h"
#include "SDL_image.h"
#include <GLES2/gl2.h>
#include <EGL/egl.h>

Data Structures
struct	graphics_gc_priv
struct	graphics_priv
struct	graphics_image_priv
struct	graphics_opengl_platform
struct	contour

Macros
#define	SCREEN_WIDTH   800
#define	SCREEN_HEIGHT   600
#define	glF(x)   x
#define	glD(x)   x
#define	GL_F   GL_FLOAT

Typedefs
typedef GLfloat	GLf

Functions
static struct graphics_priv *	graphics_opengl_new_helper (struct graphics_methods *meth)
float	area (const struct contour *contour)
int	inside_triangle (float Ax, float Ay, float Bx, float By, float Cx, float Cy, float Px, float Py)
int	snip (const struct point *pnt, int u, int v, int w, int n, int *V)
int	process_triangles (const struct contour *contour, struct contour *result)
static void	sdl_egl_destroy (struct graphics_opengl_platform *egl)
static void	sdl_egl_swap_buffers (struct graphics_opengl_platform *egl)
static void	graphics_destroy (struct graphics_priv *gr)
static void	gc_destroy (struct graphics_gc_priv *gc)
static void	gc_set_linewidth (struct graphics_gc_priv *gc, int w)
static void	gc_set_dashes (struct graphics_gc_priv *gc, int width, int offset, unsigned char *dash_list, int n)
static void	gc_set_foreground (struct graphics_gc_priv *gc, struct color *c)
static void	gc_set_background (struct graphics_gc_priv *gc, struct color *c)
static struct graphics_gc_priv *	gc_new (struct graphics_priv *gr, struct graphics_gc_methods *meth)
static struct graphics_image_priv *	image_new (struct graphics_priv *gr, struct graphics_image_methods *meth, char *name, int *w, int *h, struct point *hot, int rotation)
static void	image_free (struct graphics_priv *gr, struct graphics_image_priv *gi)
static void	set_color (struct graphics_priv *gr, struct graphics_gc_priv *gc)
static void	draw_array (struct graphics_priv *gr, struct point *p, int count, GLenum mode)
static void	draw_rectangle_do (struct graphics_priv *gr, struct point *p, int w, int h)
static void	draw_image_es (struct graphics_priv *gr, struct point *p, int w, int h, unsigned char *data)
void	get_overlay_pos (struct graphics_priv *gr, struct point *point_out)
void	draw_overlay (struct graphics_priv *gr)
static void	draw_lines (struct graphics_priv *gr, struct graphics_gc_priv *gc, struct point *p, int count)
static void	draw_polygon (struct graphics_priv *gr, struct graphics_gc_priv *gc, struct point *p, int count)
static void	draw_rectangle (struct graphics_priv *gr, struct graphics_gc_priv *gc, struct point *p, int w, int h)
static void	display_text_draw (struct font_freetype_text *text, struct graphics_priv *gr, struct graphics_gc_priv *fg, struct graphics_gc_priv *bg, int color, struct point *p)
static void	draw_text (struct graphics_priv *gr, struct graphics_gc_priv *fg, struct graphics_gc_priv *bg, struct graphics_font_priv *font, char *text, struct point *p, int dx, int dy)
static void	draw_image (struct graphics_priv *gr, struct graphics_gc_priv *fg, struct point *p, struct graphics_image_priv *img)
static void	draw_drag (struct graphics_priv *gr, struct point *p)
static void	background_gc (struct graphics_priv *gr, struct graphics_gc_priv *gc)
static void	draw_background (struct graphics_priv *gr)
static void	draw_mode (struct graphics_priv *gr, enum draw_mode_num mode)
static int	graphics_opengl_fullscreen (struct window *w, int on)
static void	graphics_opengl_disable_suspend (struct window *w)
static GLuint	load_shader (const char *shader_source, GLenum type)
static void *	get_data (struct graphics_priv *this, const char *type)
static void	overlay_disable (struct graphics_priv *gr, int disable)
static void	overlay_resize (struct graphics_priv *gr, struct point *p, int w, int h, int wraparound)
static struct graphics_priv *	overlay_new (struct graphics_priv *gr, struct graphics_methods *meth, struct point *p, int w, int h, int wraparound)
static void	create_framebuffer_texture (struct graphics_priv *gr)
static gboolean	graphics_sdl_idle (void *data)
static struct graphics_priv *	graphics_opengl_new (struct navit *nav, struct graphics_methods *meth, struct attr **attrs, struct callback_list *cbl)
void	plugin_init (void)

Variables
struct graphics_gc_priv	graphics_gc_priv
struct graphics_image_priv	graphics_image_priv
static GHashTable *	hImageData
static int	USERWANTSTOQUIT = 0
static struct graphics_priv *	graphics_priv_root
const char	vertex_src []
const char	fragment_src []
static struct graphics_gc_methods	gc_methods
static struct graphics_image_priv	image_error
static struct graphics_methods	graphics_methods

Macro Definition Documentation

GL_F

#define GL_F   GL_FLOAT

glD

#define glD

(

x

)

x

glF

#define glF

(

x

)

x

SCREEN_HEIGHT

#define SCREEN_HEIGHT   600

SCREEN_WIDTH

#define SCREEN_WIDTH   800

Navit, a modular navigation system. Copyright (C) 2005-2010 Navit Team

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Typedef Documentation

GLf

typedef GLfloat GLf

Function Documentation

area()

float area

(

const struct contour *

contour

)

References contour::count, contour::p, p, point::x, and point::y.

Referenced by geom_poly_area(), geom_poly_centroid(), geom_poly_segments_sort(), polygon_area(), and process_triangles().

background_gc()

static void background_gc ( struct graphics_priv *  gr, struct graphics_gc_priv *  gc  )

static

References graphics_priv::background_gc.

create_framebuffer_texture()

static void create_framebuffer_texture ( struct graphics_priv *  gr )

static

References exit, graphics_priv::framebuffer_name, graphics_priv::height, graphics_priv::overlay_texture, and graphics_priv::width.

Referenced by graphics_opengl_new(), and overlay_new().

display_text_draw()

static void display_text_draw ( struct font_freetype_text *  text, struct graphics_priv *  gr, struct graphics_gc_priv *  fg, struct graphics_gc_priv *  bg, int  color, struct point *  p  )

static

References color::a, color::b, COLOR_IS_BLACK, COLOR_IS_WHITE, draw_image_es(), font_freetype_glyph::dx, font_freetype_glyph::dy, graphics_gc_priv::fa, graphics_gc_priv::fb, graphics_gc_priv::fg, graphics_gc_priv::fr, graphics_priv::freetype_methods, color::g, font_freetype_methods::get_glyph, font_freetype_methods::get_shadow, font_freetype_text::glyph, font_freetype_text::glyph_count, font_freetype_glyph::h, p, color::r, font_freetype_glyph::w, font_freetype_glyph::x, point::x, font_freetype_glyph::y, and point::y.

Referenced by draw_text().

draw_array()

static void draw_array ( struct graphics_priv *  gr, struct point *  p, int  count, GLenum  mode  )

static

References glF, p, and graphics_priv::position_location.

Referenced by draw_lines(), draw_polygon(), and draw_rectangle_do().

draw_background()

static void draw_background ( struct graphics_priv *  gr )

static

References draw_rectangle_do(), glF, graphics_priv::height, graphics_priv::overlay_texture, graphics_priv::p, graphics_priv::texture_position_location, graphics_priv::use_texture_location, graphics_priv::width, point::x, and point::y.

Referenced by draw_mode().

draw_drag()

static void draw_drag ( struct graphics_priv *  gr, struct point *  p  )

static

References graphics_priv::p, p, point::x, and point::y.

draw_image()

static void draw_image ( struct graphics_priv *  gr, struct graphics_gc_priv *  fg, struct point *  p, struct graphics_image_priv *  img  )

static

References draw_image_es(), graphics_image_priv::img, and p.

draw_image_es()

static void draw_image_es ( struct graphics_priv *  gr, struct point *  p, int  w, int  h, unsigned char *  data  )

static

References data, draw_rectangle_do(), glF, p, graphics_priv::texture_position_location, graphics_priv::use_texture_location, and point::x.

Referenced by display_text_draw(), and draw_image().

draw_lines()

static void draw_lines ( struct graphics_priv *  gr, struct graphics_gc_priv *  gc, struct point *  p, int  count  )

static

References graphics_priv::dirty, draw_array(), graphics_priv_root, graphics_gc_priv::linewidth, graphics_priv::overlay_enabled, p, graphics_priv::parent, and set_color().

draw_mode()

static void draw_mode ( struct graphics_priv *  gr, enum draw_mode_num  mode  )

static

References draw_background(), draw_mode_begin, draw_mode_end, draw_overlay(), graphics_priv::framebuffer_name, graphics_priv::height, graphics_priv::mode, graphics_priv::mvp_location, graphics_priv::overlay, graphics_priv::overlay_enabled, graphics_priv::overlays, graphics_priv::p, graphics_priv::parent, graphics_priv::platform, sdl_egl_swap_buffers(), graphics_priv::width, point::x, and point::y.

Referenced by overlay_disable().

draw_overlay()

void draw_overlay ( struct graphics_priv *  gr )

inline

References draw_rectangle_do(), get_overlay_pos(), glF, graphics_priv_root, graphics_priv::height, graphics_priv::overlay_texture, graphics_priv::texture_position_location, graphics_priv::use_texture_location, graphics_priv::width, and point::x.

Referenced by draw_mode().

draw_polygon()

static void draw_polygon ( struct graphics_priv *  gr, struct graphics_gc_priv *  gc, struct point *  p, int  count  )

static

References contour::count, graphics_priv::dirty, draw_array(), graphics_priv::fill_poly, graphics_priv_root, graphics_priv::overlay_enabled, contour::p, p, graphics_priv::parent, process_triangles(), and set_color().

draw_rectangle()

static void draw_rectangle ( struct graphics_priv *  gr, struct graphics_gc_priv *  gc, struct point *  p, int  w, int  h  )

static

References graphics_priv::dirty, draw_rectangle_do(), graphics_priv_root, graphics_priv::overlay_enabled, p, graphics_priv::parent, and set_color().

draw_rectangle_do()

static void draw_rectangle_do ( struct graphics_priv *  gr, struct point *  p, int  w, int  h  )

static

References draw_array(), p, point::x, and point::y.

Referenced by draw_background(), draw_image_es(), draw_overlay(), and draw_rectangle().

draw_text()

static void draw_text ( struct graphics_priv *  gr, struct graphics_gc_priv *  fg, struct graphics_gc_priv *  bg, struct graphics_font_priv *  font, char *  text, struct point *  p, int  dx, int  dy  )

static

References dbg, graphics_priv::dirty, display_text_draw(), graphics_priv::freetype_methods, graphics_priv_root, lvl_error, graphics_priv::overlay_enabled, p, graphics_priv::parent, font_freetype_methods::text_destroy, font_freetype_methods::text_new, point::x, and point::y.

gc_destroy()

static void gc_destroy ( struct graphics_gc_priv *  gc )

static

gc_new()

static struct graphics_gc_priv* gc_new ( struct graphics_priv *  gr, struct graphics_gc_methods *  meth  )

static

References gc_methods, graphics_gc_priv::gr, and graphics_gc_priv::linewidth.

gc_set_background()

static void gc_set_background ( struct graphics_gc_priv *  gc, struct color *  c  )

static

gc_set_dashes()

static void gc_set_dashes ( struct graphics_gc_priv *  gc, int  width, int  offset, unsigned char *  dash_list, int  n  )

static

References graphics_gc_priv::dash_count, and graphics_gc_priv::dash_mask.

gc_set_foreground()

static void gc_set_foreground ( struct graphics_gc_priv *  gc, struct color *  c  )

static

References c, graphics_gc_priv::fa, graphics_gc_priv::fb, graphics_gc_priv::fg, and graphics_gc_priv::fr.

gc_set_linewidth()

static void gc_set_linewidth ( struct graphics_gc_priv *  gc, int  w  )

static

References graphics_gc_priv::linewidth, and graphics_priv::w.

get_data()

static void* get_data ( struct graphics_priv *  this, const char *  type  )

static

References callback_list_call_attr_2, graphics_priv::cbl, window::disable_suspend, fragment_src, window::fullscreen, graphics_opengl_disable_suspend(), graphics_opengl_fullscreen(), graphics_priv_root, height, load_shader(), window::priv, type, vertex_src, and width.

get_overlay_pos()

void get_overlay_pos ( struct graphics_priv *  gr, struct point *  point_out  )

inline

References graphics_priv::height, graphics_priv::p, graphics_priv::parent, graphics_priv::width, point::x, and point::y.

Referenced by draw_overlay().

graphics_destroy()

static void graphics_destroy ( struct graphics_priv *  gr )

static

References font_freetype_methods::destroy, graphics_priv::freetype_methods, graphics_priv::platform, and sdl_egl_destroy().

graphics_opengl_disable_suspend()

static void graphics_opengl_disable_suspend ( struct window *  w )

static

Referenced by get_data().

graphics_opengl_fullscreen()

static int graphics_opengl_fullscreen ( struct window *  w, int  on  )

static

Referenced by get_data().

graphics_opengl_new()

static struct graphics_priv* graphics_opengl_new ( struct navit *  nav, struct graphics_methods *  meth, struct attr **  attrs, struct callback_list *  cbl  )

static

References attr_search(), graphics_priv::cbl, cbl, create_framebuffer_texture(), graphics_priv::delay, graphics_opengl_platform::eglcontext, graphics_opengl_platform::eglwindow, event_request_system(), exit, graphics_priv::fill_poly, graphics_priv::framebuffer_name, graphics_opengl_new_helper(), graphics_priv_root, graphics_sdl_idle(), graphics_priv::height, height, hImageData, graphics_priv::nav, attr::num, graphics_priv::overlay_enabled, graphics_priv::overlays, SCREEN_HEIGHT, SCREEN_WIDTH, graphics_priv::show_overlays, graphics_priv::timeout, attr::u, graphics_priv::width, and width.

Referenced by plugin_init().

graphics_opengl_new_helper()

static struct graphics_priv * graphics_opengl_new_helper ( struct graphics_methods *  meth )

static

References font_freetype_new(), graphics_methods::font_new, graphics_priv::freetype_methods, graphics_methods::get_text_bbox, and graphics_methods.

Referenced by graphics_opengl_new(), and overlay_new().

graphics_sdl_idle()

static gboolean graphics_sdl_idle ( void *  data )

static

References callback_list_call_attr_1, callback_list_call_attr_3, graphics_priv::cbl, data, exit, graphics_priv::fill_poly, graphics_priv::force_redraw, graphics_priv_root, NAVIT_KEY_BACKSPACE, NAVIT_KEY_DOWN, NAVIT_KEY_LEFT, NAVIT_KEY_RETURN, NAVIT_KEY_RIGHT, NAVIT_KEY_UP, NAVIT_KEY_ZOOM_IN, NAVIT_KEY_ZOOM_OUT, p, graphics_priv::show_overlays, and USERWANTSTOQUIT.

Referenced by graphics_opengl_new().

image_free()

static void image_free ( struct graphics_priv *  gr, struct graphics_image_priv *  gi  )

static

image_new()

static struct graphics_image_priv* image_new ( struct graphics_priv *  gr, struct graphics_image_methods *  meth, char *  name, int *  w, int *  h, struct point *  hot, int  rotation  )

static

References dbg, graphics_image_priv::h, hImageData, graphics_image_priv::hot, image_error, graphics_image_priv::img, lvl_error, name, graphics_image_priv::w, point::x, and point::y.

inside_triangle()

int inside_triangle	(	float	Ax,
		float	Ay,
		float	Bx,
		float	By,
		float	Cx,
		float	Cy,
		float	Px,
		float	Py
	)

Referenced by snip().

load_shader()

static GLuint load_shader ( const char *  shader_source, GLenum  type  )

static

References type.

Referenced by get_data().

overlay_disable()

static void overlay_disable ( struct graphics_priv *  gr, int  disable  )

static

References draw_mode(), draw_mode_end, graphics_priv::force_redraw, and graphics_priv::overlay_enabled.

overlay_new()

static struct graphics_priv * overlay_new ( struct graphics_priv *  gr, struct graphics_methods *  meth, struct point *  p, int  w, int  h, int  wraparound  )

static

References graphics_priv::color_location, create_framebuffer_texture(), graphics_priv::fill_poly, graphics_opengl_new_helper(), graphics_priv::h, height, graphics_priv::mvp_location, next, graphics_priv::overlay_autodisabled, graphics_priv::overlay_enabled, graphics_priv::overlays, p, graphics_priv::position_location, graphics_priv::texture_location, graphics_priv::texture_position_location, graphics_priv::use_texture_location, graphics_priv::w, width, point::x, and point::y.

overlay_resize()

static void overlay_resize ( struct graphics_priv *  gr, struct point *  p, int  w, int  h, int  wraparound  )

static

References callback_list_call_attr_2, graphics_priv::cbl, changed(), graphics_priv::height, graphics_priv::overlay_autodisabled, graphics_priv::overlay_texture, graphics_priv::p, p, graphics_priv::width, and graphics_priv::wraparound.

plugin_init()

void plugin_init

(

void

)

References graphics_opengl_new().

process_triangles()

int process_triangles	(	const struct contour *	contour,
		struct contour *	result
	)

References area(), c, contour::count, contour::p, snip(), and graphics_priv::w.

Referenced by draw_polygon().

sdl_egl_destroy()

static void sdl_egl_destroy ( struct graphics_opengl_platform *  egl )

static

References graphics_opengl_platform::eglcontext, and graphics_opengl_platform::eglwindow.

Referenced by graphics_destroy().

sdl_egl_swap_buffers()

static void sdl_egl_swap_buffers ( struct graphics_opengl_platform *  egl )

static

References graphics_opengl_platform::eglwindow.

Referenced by draw_mode().

set_color()

static void set_color ( struct graphics_priv *  gr, struct graphics_gc_priv *  gc  )

static

References graphics_priv::color_location, graphics_gc_priv::fa, graphics_gc_priv::fb, graphics_gc_priv::fg, and graphics_gc_priv::fr.

Referenced by draw_lines(), draw_polygon(), and draw_rectangle().

snip()

int snip	(	const struct point *	pnt,
		int	u,
		int	v,
		int	w,
		int	n,
		int *	V
	)

References inside_triangle(), p, graphics_priv::w, point::x, and point::y.

Referenced by process_triangles().

Variable Documentation

fragment_src

const char fragment_src[]

Initial value:

=
    "                                                      \
   uniform lowp vec4    avcolor;                        \
   uniform sampler2D    texture; \
   uniform bool         use_texture; \
   varying vec2         v_texture_position; \
   void  main()                                        \
   {                                                   \
      if (use_texture) { \
         gl_FragColor = texture2D(texture, v_texture_position);     \
      } else { \
         gl_FragColor = avcolor; \
      } \
   }                                                   \
"

Referenced by get_data().

gc_methods

struct graphics_gc_methods gc_methods

static

Initial value:

= {
    gc_destroy,
    gc_set_linewidth,
    gc_set_dashes,
    gc_set_foreground,
    gc_set_background
}

Referenced by gc_new().

graphics_gc_priv

struct graphics_gc_priv graphics_gc_priv

Referenced by gc_new().

graphics_image_priv

struct graphics_image_priv graphics_image_priv

graphics_methods

struct graphics_methods graphics_methods

static

Initial value:

= {
    graphics_destroy,
    draw_mode,
    draw_lines,
    draw_polygon,
    draw_rectangle,
    NULL,
    draw_text,
    draw_image,
    NULL,
    draw_drag,
    NULL,
    gc_new,
    background_gc,
    overlay_new,
    image_new,
    get_data,
    image_free,
    NULL,
    overlay_disable,
    overlay_resize,
    NULL, 
    NULL, 
    NULL, 
}

Referenced by graphics_opengl_new_helper().

graphics_priv_root

struct graphics_priv* graphics_priv_root

static

Referenced by draw_lines(), draw_overlay(), draw_polygon(), draw_rectangle(), draw_text(), get_data(), graphics_opengl_new(), and graphics_sdl_idle().

hImageData

GHashTable* hImageData

static

Referenced by graphics_opengl_new(), and image_new().

image_error

struct graphics_image_priv image_error

static

Referenced by image_new().

USERWANTSTOQUIT

int USERWANTSTOQUIT = 0

static

Referenced by graphics_sdl_idle().

vertex_src

const char vertex_src[]

Initial value:

=
    "                                        \
   attribute vec2        position;       \
   attribute vec2        texture_position;       \
   uniform mat4          mvp;             \
   varying vec2          v_texture_position; \
                                         \
   void main()                           \
   {                                     \
      v_texture_position=texture_position; \
      gl_Position = mvp*vec4(position, 0.0, 1.0);   \
   }                                     \
"

Referenced by get_data().