Attachment 30410 Details for Bug 24531 – Test program

Test program

test-fp.c (text/x-c), 3.58 KB, created by Neil Roberts on 2009-10-14 11:45:26 UTC

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Filename:

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Creator: Neil Roberts

Created: 2009-10-14 11:45:26 UTC

Size: 3.58 KB

patch

obsolete

>#include <stdio.h>
>#include <stdlib.h>
>#include <string.h>
>#include <unistd.h>
>#include <GL/gl.h>
>#include <GL/glx.h>
>#include <errno.h>
>#include <locale.h>
>
>typedef struct _Data Data;
>
>struct _Data
>{
>  Display *dpy;
>  Window w;
>  GLXContext ctx;
>
>  GLuint tex_num;
>};
>
>static const GLubyte tex_data[]
>= { 0x00, 0xff, 0xff, 0xff };
>
>static const char
>fragment_prog[] =
>  "!!ARBfp1.0\n"
>  "PARAM c = { 0.5, 0.5, 0.5, 1.0 };"
>  "MOV result.color.x, c.x;\n"
>  "MOV result.color.y, c.y;\n"
>  "MOV result.color.z, c.z;\n"
>  "MOV result.color.w, c.w;\n"
>  "END";
>
>static void
>redraw (Data *data)
>{
>  glClear (GL_COLOR_BUFFER_BIT);
>
>  glColor4f (0.0f, 0.0f, 1.0f, 1.0f);
>
>  glBegin (GL_TRIANGLE_STRIP);
>  glVertex2f (-0.7, -0.7);
>  glVertex2f (0.7, -0.7);
>  glVertex2f (-0.7, 0.7);
>  glVertex2f (0.7, 0.7);
>  glEnd ();
>
>  glXSwapBuffers (data->dpy, data->w);
>}
>
>
>static Window
>make_window (Data *data, unsigned int width, unsigned int height)
>{
>  int attrib[] = {
>    GLX_RGBA,
>    GLX_RED_SIZE, 1,
>    GLX_GREEN_SIZE, 1,
>    GLX_BLUE_SIZE, 1,
>    GLX_DOUBLEBUFFER,
>    None
>  };
>  int scrnum = 0;
>  XSetWindowAttributes attr;
>  unsigned long mask;
>  Window root;
>  Window win;
>  XVisualInfo *visinfo;
>  GLuint fp_prog;
>
>  root = RootWindow (data->dpy, scrnum);
>
>  if (!(visinfo = glXChooseVisual (data->dpy, scrnum, attrib)))
>    {
>      printf ("Error: couldn't get an RGB, Double-buffered visual\n");
>      exit (1);
>    }
>
>  if (!(data->ctx = glXCreateContext (data->dpy, visinfo, NULL, True)))
>    {
>      printf ("Error: glXCreateContext failed\n");
>      exit (1);
>    }
>
>  /* window attributes */
>  attr.background_pixel = 0;
>  attr.border_pixel = 0;
>  attr.colormap = XCreateColormap (data->dpy, root, visinfo->visual, AllocNone);
>  attr.event_mask = StructureNotifyMask | ExposureMask
>    | PointerMotionMask | KeyPressMask;
>  mask = CWBorderPixel | CWColormap | CWEventMask;
>
>  win = XCreateWindow (data->dpy, root, 0, 0, width, height,
>		       0, visinfo->depth, InputOutput,
>		       visinfo->visual, mask, &attr);
>  if (!win)
>    {
>      printf ("Error: XCreateWindow failed\n");
>      exit (1);
>    }
>
>  glXMakeCurrent (data->dpy, win, data->ctx);
>
>  glViewport (0, 0, width, height);
>
>  glGenProgramsARB (1, &fp_prog);
>  glBindProgramARB (GL_FRAGMENT_PROGRAM_ARB, fp_prog);
>  printf ("before glProgramString glGetError() = %i\n", glGetError ());
>  glProgramStringARB (GL_FRAGMENT_PROGRAM_ARB,
>                      GL_PROGRAM_FORMAT_ASCII_ARB,
>                      sizeof (fragment_prog) - 1,
>                      (const GLbyte *) fragment_prog);
>  printf ("after glProgramString glGetError() = %i\n", glGetError ());
>  glEnable (GL_FRAGMENT_PROGRAM_ARB);
>
>  return win;
>}
>
>static void
>event_loop (Data *data)
>{
>  while (1)
>    {
>      XEvent event;
>      XNextEvent (data->dpy, &event);
>
>      if (event.type == KeyPress)
>        {
>          KeySym sym = XKeycodeToKeysym (data->dpy, event.xkey.keycode, 0);
>
>          if (sym == XK_Escape || sym == XK_q || sym == XK_Q)
>            break;
>        }
>      else if (event.type == Expose)
>        redraw (data);
>    }
>}
>
>int
>main (int argc, char *argv[])
>{
>  Data data;
>
>  setlocale (LC_ALL, "");
>
>  data.dpy = XOpenDisplay (NULL);
>
>  printf ("strtod(\"0.5\") = %f\n", strtod ("0.5", NULL));
>
>  if (!data.dpy)
>    {
>      printf ("Error: XOpenDisplay failed\n");
>      return 1;
>    }
>
>  data.w = make_window (&data, 800, 600);
>
>  /* init GL state */
>  glClearColor (1.0, 1.0, 1.0, 1.0);
>
>  XMapWindow (data.dpy, data.w);
>
>  event_loop (&data);
>
>  glXMakeCurrent (data.dpy, None, NULL);
>  glXDestroyContext (data.dpy, data.ctx);
>  XDestroyWindow (data.dpy, data.w);
>
>  XCloseDisplay (data.dpy);
>
>  return 0;
>}

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Attachments on bug 24531: 30410 | 30414 | 30419 | 41062

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