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Fix gl_create_context() to find a GLXFBConfig compatible with the parent GL context.

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This commit is contained in:
gb 2010-04-16 13:47:30 +00:00
parent b8aadb9e82
commit d1709fef62
1 changed files with 48 additions and 15 deletions
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63
gst-libs/gst/vaapi/gstvaapiutils_glx.c
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@ -287,16 +287,17 @@ GLContextState *
gl_create_context(Display *dpy, int screen, GLContextState *parent)
{
GLContextState *cs;
GLXFBConfig *fb_configs = NULL;
int n_fb_configs;
GLXFBConfig *fbconfigs = NULL;
int fbconfig_id, val, n, n_fbconfigs;
Status status;
static GLint fb_config_attrs[] = {
static GLint fbconfig_attrs[] = {
GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
GLX_RENDER_TYPE, GLX_RGBA_BIT,
GLX_DOUBLEBUFFER, True,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_RED_SIZE, 8,
GLX_GREEN_SIZE, 8,
GLX_BLUE_SIZE, 8,
None
};
@ -310,17 +311,49 @@ gl_create_context(Display *dpy, int screen, GLContextState *parent)
cs->context = NULL;
cs->swapped_buffers = FALSE;
fb_configs = glXChooseFBConfig(dpy, screen, fb_config_attrs, &n_fb_configs);
if (!fb_configs)
goto error;
if (parent && parent->context) {
status = glXQueryContext(
parent->display,
parent->context,
GLX_FBCONFIG_ID, &fbconfig_id
);
if (status != Success)
goto error;
cs->visual = glXGetVisualFromFBConfig(dpy, fb_configs[0]);
if (!cs->visual)
goto error;
fbconfigs = glXGetFBConfigs(dpy, screen, &n_fbconfigs);
if (!fbconfigs)
goto error;
/* Find out a GLXFBConfig compatible with the parent context */
for (n = 0; n < n_fbconfigs; n++) {
status = glXGetFBConfigAttrib(
dpy,
fbconfigs[n],
GLX_FBCONFIG_ID, &val
);
if (status == Success && val == fbconfig_id)
break;
}
if (n == n_fbconfigs)
goto error;
}
else {
fbconfigs = glXChooseFBConfig(
dpy,
screen,
fbconfig_attrs, &n_fbconfigs
);
if (!fbconfigs)
goto error;
/* Select the first one */
n = 0;
}
cs->visual = glXGetVisualFromFBConfig(dpy, fbconfigs[n]);
cs->context = glXCreateNewContext(
dpy,
fb_configs[0],
fbconfigs[n],
GLX_RGBA_TYPE,
parent ? parent->context : NULL,
True
@ -332,8 +365,8 @@ error:
gl_destroy_context(cs);
cs = NULL;
end:
if (fb_configs)
XFree(fb_configs);
if (fbconfigs)
XFree(fbconfigs);
return cs;
}