SDL GLFW without OpenGL

[sp00ck]

I write a program in SDL2. Im need Windows System in dev mode. I'm not using OpenGL. I need use both: my program and Nuclear.

How writing simple as possible SDL2 or GLFW program /renderer. I need only put image on screen, draw line, draw rectangle with color.

demo/program look easy but difficult add any program 'bottom' of windows

[hbiblia]

Check: https://github.com/hbiblia/Nuklear/tree/master/demo/sdl_native

[sp00ck]

Not working

---- linux fedora 32

cc main.c -std=c99 -pedantic -O2 -o bin/demo -lSDL2 -lGL -lm -lGLU
In file included from main.c:22:
nuklear_sdl.h: In function ‘nk_sdl_render’:
nuklear_sdl.h:197:35: warning: passing argument 1 of ‘sdl_draw_polyline’ from incompatible pointer type [-Wincompatible-pointer-types]
  197 |                 sdl_draw_polyline((const float*)&vertices, (2 * sizeof(float)),(int)p->point_count, p->color);
      |                                   ^~~~~~~~~~~~~~~~~~~~~~~
      |                                   |
      |                                   const float *
nuklear_sdl.h:123:38: note: expected ‘const Sint16 *’ {aka ‘const short int *’} but argument is of type ‘const float *’
  123 | void sdl_draw_polyline(const Sint16 *vx, const Sint16 *vy, int n, struct nk_color color) {
      |                        ~~~~~~~~~~~~~~^~
nuklear_sdl.h:197:60: warning: passing argument 2 of ‘sdl_draw_polyline’ makes pointer from integer without a cast [-Wint-conversion]
  197 |                 sdl_draw_polyline((const float*)&vertices, (2 * sizeof(float)),(int)p->point_count, p->color);
      |                                                            ^~~~~~~~~~~~~~~~~~~
      |                                                            |
      |                                                            long unsigned int
nuklear_sdl.h:123:56: note: expected ‘const Sint16 *’ {aka ‘const short int *’} but argument is of type ‘long unsigned int’
  123 | void sdl_draw_polyline(const Sint16 *vx, const Sint16 *vy, int n, struct nk_color color) {
      |                                          ~~~~~~~~~~~~~~^~
nuklear_sdl.h:208:41: warning: passing argument 1 of ‘sdl_draw_filled_polygon’ from incompatible pointer type [-Wincompatible-pointer-types]
  208 |                 sdl_draw_filled_polygon((const float*)&verticesx, (const float*)&verticesy,
      |                                         ^~~~~~~~~~~~~~~~~~~~~~~~
      |                                         |
      |                                         const float *
nuklear_sdl.h:131:44: note: expected ‘const Sint16 *’ {aka ‘const short int *’} but argument is of type ‘const float *’
  131 | void sdl_draw_filled_polygon(const Sint16 *vx, const Sint16 *vy, int n, struct nk_color color) {
      |                              ~~~~~~~~~~~~~~^~
nuklear_sdl.h:208:67: warning: passing argument 2 of ‘sdl_draw_filled_polygon’ from incompatible pointer type [-Wincompatible-pointer-types]
  208 |                 sdl_draw_filled_polygon((const float*)&verticesx, (const float*)&verticesy,
      |                                                                   ^~~~~~~~~~~~~~~~~~~~~~~~
      |                                                                   |
      |                                                                   const float *
nuklear_sdl.h:131:62: note: expected ‘const Sint16 *’ {aka ‘const short int *’} but argument is of type ‘const float *’
  131 | void sdl_draw_filled_polygon(const Sint16 *vx, const Sint16 *vy, int n, struct nk_color color) {
      |                                                ~~~~~~~~~~~~~~^~
nuklear_sdl.h:225:32: warning: passing argument 1 of ‘sdl_draw_image’ discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
  225 |                 sdl_draw_image(&i->img, i->x, i->y, i->w, i->h);
      |                                ^~~~~~~
nuklear_sdl.h:135:38: note: expected ‘struct nk_image *’ but argument is of type ‘const struct nk_image *’
  135 | void sdl_draw_image(struct nk_image *img, int x, int y, int w, int h) {
      |                     ~~~~~~~~~~~~~~~~~^~~
nuklear_sdl.h: In function ‘nk_sdl_init’:
nuklear_sdl.h:279:33: warning: initialization of ‘struct nk_user_font *’ from incompatible pointer type ‘struct nk_user_font **’ [-Wincompatible-pointer-types]
  279 |     struct nk_user_font *font = &sdl.user_font;
      |                                 ^
/usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/10/../../../../lib64/crt1.o: in function `_start':
(.text+0x24): undefined reference to `main'
/usr/bin/ld: /tmp/cchzZKBw.o: in function `nk_sdl_font_get_text_width':
main.c:(.text+0x519): undefined reference to `TTF_SizeText'
/usr/bin/ld: /tmp/cchzZKBw.o: in function `nk_sdl_font_create_from_file':
main.c:(.text+0x2e1ad): undefined reference to `TTF_Init'
/usr/bin/ld: main.c:(.text+0x2e1b7): undefined reference to `TTF_OpenFont'
/usr/bin/ld: /tmp/cchzZKBw.o: in function `sdl_draw_text':
main.c:(.text+0x2e229): undefined reference to `TTF_RenderText_Blended'
/usr/bin/ld: /tmp/cchzZKBw.o: in function `sdl_draw_rect':
main.c:(.text+0x2e301): undefined reference to `roundedRectangleRGBA'
/usr/bin/ld: /tmp/cchzZKBw.o: in function `sdl_draw_rect_fill':
main.c:(.text+0x2e35c): undefined reference to `roundedBoxRGBA'
/usr/bin/ld: /tmp/cchzZKBw.o: in function `sdl_draw_line':
main.c:(.text+0x2e3a9): undefined reference to `lineRGBA'
/usr/bin/ld: /tmp/cchzZKBw.o: in function `sdl_draw_ellipse':
main.c:(.text+0x2e3f9): undefined reference to `ellipseRGBA'
/usr/bin/ld: /tmp/cchzZKBw.o: in function `sdl_draw_ellipse_filled':
main.c:(.text+0x2e449): undefined reference to `filledEllipseRGBA'
/usr/bin/ld: /tmp/cchzZKBw.o: in function `sdl_draw_circle_filled':
main.c:(.text+0x2e492): undefined reference to `filledCircleRGBA'
/usr/bin/ld: /tmp/cchzZKBw.o: in function `sdl_draw_triangle':
main.c:(.text+0x2e4e2): undefined reference to `trigonRGBA'
/usr/bin/ld: /tmp/cchzZKBw.o: in function `sdl_draw_filled_triangle':
main.c:(.text+0x2e532): undefined reference to `filledTrigonRGBA'
/usr/bin/ld: /tmp/cchzZKBw.o: in function `sdl_draw_polyline':
main.c:(.text+0x2e56b): undefined reference to `polygonRGBA'
/usr/bin/ld: /tmp/cchzZKBw.o: in function `sdl_draw_arc':
main.c:(.text+0x2e5be): undefined reference to `arcRGBA'
/usr/bin/ld: /tmp/cchzZKBw.o: in function `sdl_draw_filled_polygon':
main.c:(.text+0x2e5fb): undefined reference to `filledPolygonRGBA'
/usr/bin/ld: /tmp/cchzZKBw.o: in function `nk_sdl_render':
main.c:(.text+0x2e73f): undefined reference to `roundedBoxRGBA'
/usr/bin/ld: main.c:(.text+0x2e78e): undefined reference to `roundedRectangleRGBA'
/usr/bin/ld: main.c:(.text+0x2e7d1): undefined reference to `lineRGBA'
/usr/bin/ld: main.c:(.text+0x2e8bd): undefined reference to `filledPolygonRGBA'
/usr/bin/ld: main.c:(.text+0x2e946): undefined reference to `polygonRGBA'
/usr/bin/ld: main.c:(.text+0x2e993): undefined reference to `filledTrigonRGBA'
/usr/bin/ld: main.c:(.text+0x2e9db): undefined reference to `trigonRGBA'
/usr/bin/ld: main.c:(.text+0x2ea2c): undefined reference to `arcRGBA'
/usr/bin/ld: main.c:(.text+0x2eab6): undefined reference to `filledEllipseRGBA'
/usr/bin/ld: main.c:(.text+0x2eb3e): undefined reference to `ellipseRGBA'
/usr/bin/ld: /tmp/cchzZKBw.o: in function `nk_sdl_init':
main.c:(.text+0x2eb6b): undefined reference to `TTF_FontHeight'
/usr/bin/ld: /tmp/cchzZKBw.o: in function `WinMain':
main.c:(.text+0x2f3bf): undefined reference to `TTF_Init'
/usr/bin/ld: main.c:(.text+0x2f3ce): undefined reference to `TTF_OpenFont'
/usr/bin/ld: /tmp/cchzZKBw.o: in function `nk_sdl_font_del':
main.c:(.text+0x2e1fd): undefined reference to `TTF_CloseFont'
collect2: error: ld returned 1 exit status
make: *** [/home/user/inne/Nuklear/demo/sdl_native/Makefile:25: demo] Error 1

[hbiblia]

Dependencias : SDL2_ttf SDL2_gfx Modify the make to compile for Linux as it is for Win10.

Update Ubuntu 20 : sudo apt-get install libsdl2-ttf-dev libsdl2-2.0-0 libsdl2-gfx-dev Update: Makefile

[texrg]

Sorry not working. I can compile it but when I would like to change (black !) background I get

./demo
Segmentation fault (core dumped)

[fab1an2]

I have similar efect. Button, check and value working Background change not workinga and crashing whole program

[hbiblia]

Ya no explota al cambiar un color, pero no se muestra la tabla de colores. (lo siento no tengo mucho tiempo libre).

[RobLoach]

Check the sdl2surface_rawfb demo :wink: ... It will render to an SDL_Surface.

[texrg]

@RobLoach You look at surface raw this is not answer because You dont using sdl_surface AND IN THIS SAME TIME window nuclear

[RobLoach]

Or the render geography demo?