Attachment 14011 Details for Bug 14293 – test case

test case

test.c (text/x-csrc), 4.16 KB, created by Johan Bilien on 2008-01-29 08:09:08 UTC

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Filename:

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Creator: Johan Bilien

Created: 2008-01-29 08:09:08 UTC

Size: 4.16 KB

patch

obsolete

>#include <stdlib.h>
>#include <stdio.h>
>#include <string.h>
>
>#include <fcntl.h>
>
>#define GLX_GLXEXT_PROTOTYPES
>#include <GL/glx.h>
>#include <GL/glxext.h>
>#include <GL/glu.h>
>#include <assert.h>
>
>#include <glib.h>
>
>
>static int attr_list[] = { GLX_RGBA, GLX_DOUBLEBUFFER,
>  GLX_RED_SIZE, 4,
>  GLX_GREEN_SIZE, 4,
>  GLX_BLUE_SIZE, 4,
>  GLX_DEPTH_SIZE, 16,
>  None };
>
>
>static Display *dpy = NULL;
>static int screen = -1;
>static Window window = None;
>static GLXContext ctx = None;
>
>static int width = 400;
>static int height = 400;
>
>static GLuint tex1, tex2;
>static GLuint fbo1, fbo2;
>
>
>GLXContext
>init_glx (int   width,
>          int   height)
>{
>  XVisualInfo *vi;
>  Colormap cmap;
>  XSetWindowAttributes wa = {0};
>  GLXContext ctx;
>
>  vi = glXChooseVisual (dpy, screen, attr_list);
>  assert (vi);
>
>  ctx = glXCreateContext (dpy, vi, 0, GL_FALSE);
>
>  cmap = XCreateColormap (dpy,
>                          RootWindow (dpy, vi->screen),
>                          vi->visual,
>                          AllocNone);
>  wa.colormap = cmap;
>  wa.border_pixel = 0;
>
>  wa.event_mask = ExposureMask | KeyPressMask | ButtonPressMask |
>      StructureNotifyMask;
>  window = XCreateWindow (dpy,
>                          RootWindow (dpy, vi->screen),
>                          0, 0,
>                          width, height,
>                          0,
>                          vi->depth,
>                          InputOutput,
>                          vi->visual,
>                          CWBorderPixel | CWColormap | CWEventMask,
>                          &wa);
>
>  XMapRaised (dpy, window);
>
>  return ctx;
>}
>
>static void
>resize (int     width,
>        int     height)
>{
>  glViewport (0, 0, width, height);
>  glMatrixMode (GL_PROJECTION);
>  glLoadIdentity ();
>  gluPerspective (45.0f, (GLfloat)width / (GLfloat)height, 0.1f, 100.0f);
>  glMatrixMode (GL_MODELVIEW);
>
>}
>
>static void
>init_gl (void)
>{
>  glShadeModel(GL_SMOOTH);
>  glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
>  glClearDepth(1.0f);
>  glEnable(GL_DEPTH_TEST);
>  glDepthFunc(GL_LEQUAL);
>  glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
>
>}
>
>static void
>create_fbo (GLuint *fbo, GLuint *texture, GLuint width, GLuint height)
>{
>  GLuint depth_buffer;
>
>  glGenTextures (1, texture);
>  glBindTexture (GL_TEXTURE_2D, *texture);
>  glTexImage2D (GL_TEXTURE_2D,
>                0,
>                4,
>                width,
>                height,
>                0,
>                GL_RGBA,
>                GL_UNSIGNED_BYTE,
>                NULL);
>  glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
>  glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
>  glBindTexture (GL_TEXTURE_2D, 0);
>
>  glGenRenderbuffersEXT (1, &depth_buffer);
>  glBindRenderbufferEXT (GL_RENDERBUFFER_EXT, depth_buffer);
>  glRenderbufferStorageEXT (GL_RENDERBUFFER_EXT,
>                            GL_DEPTH_COMPONENT,
>                            width, height);
>  glBindRenderbufferEXT (GL_RENDERBUFFER_EXT, 0);
>
>  glGenFramebuffersEXT (1, fbo);
>
>  glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, *fbo);
>  init_gl ();
>  resize (width, height);
>  glClearColor (0.0f, 0.0f, 0.0f, 0.0f);
>
>  glFramebufferTexture2DEXT (GL_FRAMEBUFFER_EXT,
>                             GL_COLOR_ATTACHMENT0_EXT,
>                             GL_TEXTURE_2D,
>                             texture,
>                             0);
>
>  glFramebufferRenderbufferEXT (GL_FRAMEBUFFER_EXT,
>                                GL_DEPTH_ATTACHMENT_EXT,
>                                GL_RENDERBUFFER_EXT,
>                                depth_buffer);
>
>  glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, 0);
>}
>
>int
>main (int argc, char **argv)
>{
>  XEvent event;
>  Bool shared;
>  GMainLoop *main_loop;
>
>  dpy = XOpenDisplay (NULL);
>  assert (dpy);
>
>  screen = DefaultScreen (dpy);
>
>
>  main_loop = g_main_loop_new (NULL, FALSE);
>
>  ctx = init_glx (width, height);
>
>  glXMakeCurrent (dpy, window, ctx);
>
>  init_gl ();
>
>  resize (width, height);
>
>  glFlush ();
>
>  create_fbo (&fbo1, &tex1, width, height);
>  create_fbo (&fbo2, &tex2, width, height);
>
>  printf ("Created context %i and window %i, %i, %i\n",
>          (int)glXGetContextIDEXT (ctx),
>          (int)window,
>          fbo1,
>          fbo2);
>
>  shared = False;
>
>  g_main_loop_run (main_loop);
>
>  return 0;
>}
>
>
>
>
>

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