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Code Issues 1 Projects Releases Wiki Activity

Improve handling of GL contexts.

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This commit is contained in:
gb 2010-03-31 15:25:19 +00:00
parent bc9060f425
commit 702f844a7e
4 changed files with 291 additions and 201 deletions
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21
gst-libs/gst/vaapi/gstvaapitexture.c
View file

@ -46,6 +46,7 @@ struct _GstVaapiTexturePrivate {
GLenum format;
guint width;
guint height;
GLContextState *gl_context;
void *gl_surface;
GLPixmapObject *pixo;
GLFramebufferObject *fbo;
@ -103,6 +104,13 @@ gst_vaapi_texture_destroy(GstVaapiTexture *texture)
glDeleteTextures(1, &texture_id);
GST_VAAPI_OBJECT_ID(texture) = 0;
}
if (priv->gl_context) {
GST_VAAPI_OBJECT_LOCK_DISPLAY(texture);
gl_destroy_context(priv->gl_context);
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(texture);
priv->gl_context = NULL;
}
}
static gboolean
@ -151,6 +159,18 @@ gst_vaapi_texture_create(GstVaapiTexture *texture)
{
GstVaapiTexturePrivate * const priv = texture->priv;
GLuint texture_id;
GLContextState old_cs;
GST_VAAPI_OBJECT_LOCK_DISPLAY(texture);
gl_get_current_context(&old_cs);
priv->gl_context = gl_create_context(
GST_VAAPI_OBJECT_XDISPLAY(texture),
DefaultScreen(GST_VAAPI_OBJECT_XDISPLAY(texture)),
&old_cs
);
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(texture);
if (!priv->gl_context)
return FALSE;
if (priv->foreign_texture)
texture_id = GST_VAAPI_OBJECT_ID(texture);
@ -310,6 +330,7 @@ gst_vaapi_texture_init(GstVaapiTexture *texture)
priv->format = GL_NONE;
priv->width = 0;
priv->height = 0;
priv->gl_context = NULL;
priv->gl_surface = NULL;
priv->pixo = NULL;
priv->fbo = NULL;

151
gst-libs/gst/vaapi/gstvaapiutils_glx.c
View file

@ -273,46 +273,165 @@ gl_resize(guint width, guint height)
}
/**
* gl_make_current:
* gl_create_context:
* @dpy: an X11 #Display
* @win: an X11 #Window
* @ctx: the requested GLX context
* @state: an optional #GLContextState
* @screen: the associated screen of @dpy
* @parent: the parent #GLContextState, or %NULL if none is to be used
*
* Makes the @window GLX context the current GLX rendering context of
* Creates a GLX context sharing textures and displays lists with
* @parent, if not %NULL.
*
* Return value: the newly created GLX context
*/
GLContextState *
gl_create_context(Display *dpy, int screen, GLContextState *parent)
{
GLContextState *cs;
GLXFBConfig *fb_configs = NULL;
int n_fb_configs;
static GLint fb_config_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,
None
};
cs = malloc(sizeof(*cs));
if (!cs)
goto error;
cs->display = dpy;
cs->window = parent ? parent->window : None;
cs->visual = NULL;
cs->context = NULL;
cs->swapped_buffers = FALSE;
fb_configs = glXChooseFBConfig(dpy, screen, fb_config_attrs, &n_fb_configs);
if (!fb_configs)
goto error;
cs->visual = glXGetVisualFromFBConfig(dpy, fb_configs[0]);
if (!cs->visual)
goto error;
cs->context = glXCreateNewContext(
dpy,
fb_configs[0],
GLX_RGBA_TYPE,
parent ? parent->context : NULL,
True
);
if (cs->context)
goto end;
error:
gl_destroy_context(cs);
cs = NULL;
end:
if (fb_configs)
XFree(fb_configs);
return cs;
}
/**
* gl_destroy_context:
* @cs: a #GLContextState
*
* Destroys the GLX context @cs
*/
void
gl_destroy_context(GLContextState *cs)
{
if (!cs)
return;
if (cs->visual) {
XFree(cs->visual);
cs->visual = NULL;
}
if (cs->display && cs->context) {
if (glXGetCurrentContext() == cs->context) {
/* XXX: if buffers were never swapped, the application
will crash later with the NVIDIA driver */
if (!cs->swapped_buffers)
gl_swap_buffers(cs);
glXMakeCurrent(cs->display, None, NULL);
}
glXDestroyContext(cs->display, cs->context);
cs->display = NULL;
cs->context = NULL;
}
free(cs);
}
/**
* gl_get_current_context:
* @cs: return location to the current #GLContextState
*
* Retrieves the current GLX context, display and drawable packed into
* the #GLContextState struct.
*/
void
gl_get_current_context(GLContextState *cs)
{
cs->display = glXGetCurrentDisplay();
cs->window = glXGetCurrentDrawable();
cs->context = glXGetCurrentContext();
}
/**
* gl_set_current_context:
* @new_cs: the requested new #GLContextState
* @old_cs: return location to the context that was previously current
*
* Makes the @new_cs GLX context the current GLX rendering context of
* the calling thread, replacing the previously current context if
* there was one.
*
* If @state is non %NULL, the previously current GLX context and
* If @old_cs is non %NULL, the previously current GLX context and
* window are recorded.
*
* Return value: %TRUE on success
*/
gboolean
gl_make_current(Display *dpy, Window win, GLXContext ctx, GLContextState *state)
gl_set_current_context(GLContextState *new_cs, GLContextState *old_cs)
{
if (state) {
state->context = glXGetCurrentContext();
state->window = glXGetCurrentDrawable();
if (state->context == ctx && state->window == win)
/* If display is NULL, this could be that new_cs was retrieved from
gl_get_current_context() with none set previously. If that case,
the other fields are also NULL and we don't return an error */
if (!new_cs->display)
return !new_cs->window && !new_cs->context;
if (old_cs) {
if (old_cs == new_cs)
return TRUE;
gl_get_current_context(old_cs);
if (old_cs->display == new_cs->display &&
old_cs->window == new_cs->window &&
old_cs->context == new_cs->context)
return TRUE;
}
return glXMakeCurrent(dpy, win, ctx);
return glXMakeCurrent(new_cs->display, new_cs->window, new_cs->context);
}
/**
* gl_swap_buffers:
* @dpy: an X11 #Display
* @win: an X11 #Window
* @cs: a #GLContextState
*
* Promotes the contents of the back buffer of the @win window to
* become the contents of the front buffer. This simply is wrapper
* around glXSwapBuffers().
*/
void
gl_swap_buffers(Display *dpy, Window win)
gl_swap_buffers(GLContextState *cs)
{
glXSwapBuffers(dpy, win);
glXSwapBuffers(cs->display, cs->window);
cs->swapped_buffers = TRUE;
}
/**

25
gst-libs/gst/vaapi/gstvaapiutils_glx.h
View file

@ -67,16 +67,31 @@ gl_resize(guint width, guint height)
typedef struct _GLContextState GLContextState;
struct _GLContextState {
GLXContext context;
Window window;
Display *display;
Window window;
XVisualInfo *visual;
GLXContext context;
guint swapped_buffers;
};
gboolean
gl_make_current(Display *dpy, Window win, GLXContext ctx, GLContextState *state)
GLContextState *
gl_create_context(Display *dpy, int screen, GLContextState *parent)
attribute_hidden;
void
gl_swap_buffers(Display *dpy, Window win)
gl_destroy_context(GLContextState *cs)
attribute_hidden;
void
gl_get_current_context(GLContextState *cs)
attribute_hidden;
gboolean
gl_set_current_context(GLContextState *new_cs, GLContextState *old_cs)
attribute_hidden;
void
gl_swap_buffers(GLContextState *cs)
attribute_hidden;
typedef struct _GLTextureState GLTextureState;

295
gst-libs/gst/vaapi/gstvaapiwindow_glx.c
View file

@ -43,14 +43,10 @@ G_DEFINE_TYPE(GstVaapiWindowGLX,
GstVaapiWindowGLXPrivate))
struct _GstVaapiWindowGLXPrivate {
XVisualInfo *vi;
XVisualInfo vi_static;
Colormap cmap;
GLXContext context;
GLContextState *gl_context;
guint is_constructed : 1;
guint foreign_context : 1;
guint foreign_window : 1;
guint swapped_buffers : 1;
};
enum {
@ -59,9 +55,6 @@ enum {
PROP_GLX_CONTEXT
};
static XVisualInfo *
gst_vaapi_window_glx_create_visual(GstVaapiWindowGLX *window);
/* Fill rectangle coords with capped bounds */
static inline void
fill_rect(
@ -91,149 +84,114 @@ fill_rect(
}
}
static inline void
_gst_vaapi_window_glx_set_context(
static void
_gst_vaapi_window_glx_destroy_context(GstVaapiWindowGLX *window)
{
GstVaapiWindowGLXPrivate * const priv = window->priv;
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
if (priv->gl_context) {
gl_destroy_context(priv->gl_context);
priv->gl_context = NULL;
}
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
}
static gboolean
_gst_vaapi_window_glx_create_context(
GstVaapiWindowGLX *window,
GLXContext context,
gboolean is_foreign
GLXContext foreign_context
)
{
GstVaapiWindowGLXPrivate * const priv = window->priv;
Display * const dpy = GST_VAAPI_OBJECT_XDISPLAY(window);
GLContextState parent_cs;
parent_cs.display = dpy;
parent_cs.window = None;
parent_cs.context = foreign_context;
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
priv->gl_context = gl_create_context(dpy, DefaultScreen(dpy), &parent_cs);
if (!priv->gl_context) {
GST_DEBUG("could not create GLX context");
goto end;
}
if (!glXIsDirect(dpy, priv->gl_context->context)) {
GST_DEBUG("could not create a direct-rendering GLX context");
goto out_destroy_context;
}
goto end;
out_destroy_context:
gl_destroy_context(priv->gl_context);
priv->gl_context = NULL;
end:
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
return priv->gl_context != NULL;
}
static gboolean
_gst_vaapi_window_glx_ensure_context(
GstVaapiWindowGLX *window,
GLXContext foreign_context
)
{
GstVaapiWindowGLXPrivate * const priv = window->priv;
priv->context = context;
priv->foreign_context = is_foreign;
}
static void
gst_vaapi_window_glx_destroy_context(GstVaapiWindowGLX *window)
{
GstVaapiWindowGLXPrivate * const priv = window->priv;
Display * const dpy = GST_VAAPI_OBJECT_XDISPLAY(window);
if (priv->context) {
if (!priv->foreign_context) {
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
if (glXGetCurrentContext() == priv->context) {
/* XXX: if buffers were never swapped, the application
will crash later with the NVIDIA driver */
if (!priv->swapped_buffers)
gl_swap_buffers(dpy, GST_VAAPI_OBJECT_ID(window));
gl_make_current(dpy, None, NULL, NULL);
}
glXDestroyContext(dpy, priv->context);
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
}
priv->context = NULL;
priv->foreign_context = FALSE;
if (priv->gl_context) {
if (!foreign_context || foreign_context == priv->gl_context->context)
return TRUE;
_gst_vaapi_window_glx_destroy_context(window);
}
return _gst_vaapi_window_glx_create_context(window, foreign_context);
}
static gboolean
gst_vaapi_window_glx_create_context(GstVaapiWindowGLX *window)
gst_vaapi_window_glx_ensure_context(
GstVaapiWindowGLX *window,
GLXContext foreign_context
)
{
GstVaapiWindowGLXPrivate * const priv = window->priv;
Display * const dpy = GST_VAAPI_OBJECT_XDISPLAY(window);
GLXContext ctx = NULL;
GLContextState cs;
guint width, height;
gboolean has_errors = TRUE;
GLContextState old_cs;
guint width, height;
if (!gst_vaapi_window_glx_create_visual(window))
if (!_gst_vaapi_window_glx_ensure_context(window, foreign_context))
return FALSE;
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
ctx = glXCreateContext(dpy, priv->vi, NULL, True);
if (ctx && glXIsDirect(dpy, ctx)) {
_gst_vaapi_window_glx_set_context(window, ctx, FALSE);
if (gl_make_current(dpy, GST_VAAPI_OBJECT_ID(window), ctx, &cs)) {
glDisable(GL_DEPTH_TEST);
glDepthMask(GL_FALSE);
glDisable(GL_CULL_FACE);
glDrawBuffer(GL_BACK);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
gst_vaapi_window_get_size(GST_VAAPI_WINDOW(window), &width, &height);
gl_resize(width, height);
gl_set_bgcolor(0);
glClear(GL_COLOR_BUFFER_BIT);
if (cs.context)
gl_make_current(dpy, cs.window, cs.context, NULL);
has_errors = FALSE;
}
priv->gl_context->window = GST_VAAPI_OBJECT_ID(window);
if (!gl_set_current_context(priv->gl_context, &old_cs)) {
GST_DEBUG("could not make newly created GLX context current");
return FALSE;
}
else if (ctx)
glXDestroyContext(dpy, ctx);
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
return !has_errors;
}
glDisable(GL_DEPTH_TEST);
glDepthMask(GL_FALSE);
glDisable(GL_CULL_FACE);
glDrawBuffer(GL_BACK);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
static inline void
gst_vaapi_window_glx_destroy_visual(GstVaapiWindowGLX *window)
{
GstVaapiWindowGLXPrivate * const priv = window->priv;
gst_vaapi_window_get_size(GST_VAAPI_WINDOW(window), &width, &height);
gl_resize(width, height);
if (priv->vi) {
if (priv->vi != &priv->vi_static)
XFree(priv->vi);
priv->vi = NULL;
}
}
static XVisualInfo *
gst_vaapi_window_glx_create_visual(GstVaapiWindowGLX *window)
{
GstVaapiWindowGLXPrivate * const priv = window->priv;
Display * const dpy = GST_VAAPI_OBJECT_XDISPLAY(window);
XWindowAttributes wattr;
int screen;
gboolean has_errors;
/* XXX: add and use a GstVaapiWindow:double-buffer property? */
static GLint gl_visual_attr[] = {
GLX_RGBA,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_DOUBLEBUFFER,
GL_NONE
};
if (!priv->vi) {
/* XXX: add and use a GstVaapiDisplayX11:x11-screen property? */
screen = DefaultScreen(dpy);
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
x11_trap_errors();
if (!priv->foreign_window)
priv->vi = glXChooseVisual(dpy, screen, gl_visual_attr);
else {
XGetWindowAttributes(dpy, GST_VAAPI_OBJECT_ID(window), &wattr);
if (XMatchVisualInfo(dpy, screen, wattr.depth, wattr.visual->class,
&priv->vi_static))
priv->vi = &priv->vi_static;
}
has_errors = x11_untrap_errors() != 0;
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
if (has_errors)
return NULL;
}
return priv->vi;
gl_set_bgcolor(0);
glClear(GL_COLOR_BUFFER_BIT);
gl_set_current_context(&old_cs, NULL);
return TRUE;
}
static Visual *
gst_vaapi_window_glx_get_visual(GstVaapiWindow *window)
{
XVisualInfo *vi;
GstVaapiWindowGLX * const glx_window = GST_VAAPI_WINDOW_GLX(window);
vi = gst_vaapi_window_glx_create_visual(GST_VAAPI_WINDOW_GLX(window));
if (!vi)
if (!_gst_vaapi_window_glx_ensure_context(glx_window, NULL))
return NULL;
return vi->visual;
return glx_window->priv->gl_context->visual->visual;
}
static void
@ -259,33 +217,34 @@ gst_vaapi_window_glx_create_colormap(GstVaapiWindowGLX *window)
Display * const dpy = GST_VAAPI_OBJECT_XDISPLAY(window);
int screen;
XWindowAttributes wattr;
XVisualInfo *vi;
gboolean has_errors;
gboolean success = FALSE;
if (!priv->cmap) {
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
x11_trap_errors();
if (!priv->foreign_window) {
vi = gst_vaapi_window_glx_create_visual(window);
if (vi) {
/* XXX: add a GstVaapiDisplayX11:x11-screen property? */
screen = DefaultScreen(dpy);
priv->cmap = XCreateColormap(
dpy,
RootWindow(dpy, screen),
vi->visual,
AllocNone
);
}
if (!_gst_vaapi_window_glx_ensure_context(window, NULL))
return None;
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
x11_trap_errors();
/* XXX: add a GstVaapiDisplayX11:x11-screen property? */
screen = DefaultScreen(dpy);
priv->cmap = XCreateColormap(
dpy,
RootWindow(dpy, screen),
priv->gl_context->visual->visual,
AllocNone
);
success = x11_untrap_errors() == 0;
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
}
else {
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
x11_trap_errors();
XGetWindowAttributes(dpy, GST_VAAPI_OBJECT_ID(window), &wattr);
priv->cmap = wattr.colormap;
success = x11_untrap_errors() == 0;
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
}
has_errors = x11_untrap_errors() != 0;
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
if (has_errors)
if (!success)
return None;
}
return priv->cmap;
@ -302,7 +261,7 @@ gst_vaapi_window_glx_resize(GstVaapiWindow *window, guint width, guint height)
{
GstVaapiWindowGLXPrivate * const priv = GST_VAAPI_WINDOW_GLX(window)->priv;
Display * const dpy = GST_VAAPI_OBJECT_XDISPLAY(window);
GLContextState cs;
GLContextState old_cs;
if (!GST_VAAPI_WINDOW_CLASS(gst_vaapi_window_glx_parent_class)->
resize(window, width, height))
@ -310,10 +269,9 @@ gst_vaapi_window_glx_resize(GstVaapiWindow *window, guint width, guint height)
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
XSync(dpy, False); /* make sure resize completed */
if (gl_make_current(dpy, GST_VAAPI_OBJECT_ID(window), priv->context, &cs)) {
if (gl_set_current_context(priv->gl_context, &old_cs)) {
gl_resize(width, height);
if (cs.context)
gl_make_current(dpy, cs.window, cs.context, NULL);
gl_set_current_context(&old_cs, NULL);
}
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
return TRUE;
@ -324,8 +282,7 @@ gst_vaapi_window_glx_finalize(GObject *object)
{
GstVaapiWindowGLX * const window = GST_VAAPI_WINDOW_GLX(object);
gst_vaapi_window_glx_destroy_context(window);
gst_vaapi_window_glx_destroy_visual(window);
_gst_vaapi_window_glx_destroy_context(window);
gst_vaapi_window_glx_destroy_colormap(window);
G_OBJECT_CLASS(gst_vaapi_window_glx_parent_class)->finalize(object);
@ -377,8 +334,6 @@ gst_vaapi_window_glx_constructed(GObject *object)
GstVaapiWindowGLXPrivate * const priv = GST_VAAPI_WINDOW_GLX(object)->priv;
GObjectClass *parent_class;
priv->foreign_context = priv->context != NULL;
parent_class = G_OBJECT_CLASS(gst_vaapi_window_glx_parent_class);
if (parent_class->constructed)
parent_class->constructed(object);
@ -386,8 +341,8 @@ gst_vaapi_window_glx_constructed(GObject *object)
priv->foreign_window =
gst_vaapi_window_x11_is_foreign_xid(GST_VAAPI_WINDOW_X11(object));
priv->is_constructed = priv->foreign_context ||
gst_vaapi_window_glx_create_context(GST_VAAPI_WINDOW_GLX(object));
priv->is_constructed =
gst_vaapi_window_glx_ensure_context(GST_VAAPI_WINDOW_GLX(object), NULL);
}
static void
@ -429,13 +384,10 @@ gst_vaapi_window_glx_init(GstVaapiWindowGLX *window)
GstVaapiWindowGLXPrivate *priv = GST_VAAPI_WINDOW_GLX_GET_PRIVATE(window);
window->priv = priv;
priv->vi = NULL;
priv->cmap = None;
priv->context = NULL;
priv->gl_context = NULL;
priv->is_constructed = FALSE;
priv->foreign_context = FALSE;
priv->foreign_window = FALSE;
priv->swapped_buffers = FALSE;
}
/**
@ -505,7 +457,7 @@ gst_vaapi_window_glx_get_context(GstVaapiWindowGLX *window)
g_return_val_if_fail(GST_VAAPI_IS_WINDOW_GLX(window), NULL);
g_return_val_if_fail(window->priv->is_constructed, FALSE);
return window->priv->context;
return window->priv->gl_context->context;
}
/**
@ -526,13 +478,7 @@ gst_vaapi_window_glx_set_context(GstVaapiWindowGLX *window, GLXContext ctx)
g_return_val_if_fail(GST_VAAPI_IS_WINDOW_GLX(window), FALSE);
g_return_val_if_fail(window->priv->is_constructed, FALSE);
gst_vaapi_window_glx_destroy_context(window);
if (ctx) {
_gst_vaapi_window_glx_set_context(window, ctx, TRUE);
return TRUE;
}
return gst_vaapi_window_glx_create_context(window);
return gst_vaapi_window_glx_ensure_context(window, ctx);
}
/**
@ -554,12 +500,7 @@ gst_vaapi_window_glx_make_current(GstVaapiWindowGLX *window)
g_return_val_if_fail(window->priv->is_constructed, FALSE);
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
success = gl_make_current(
GST_VAAPI_OBJECT_XDISPLAY(window),
GST_VAAPI_OBJECT_ID(window),
window->priv->context,
NULL
);
success = gl_set_current_context(window->priv->gl_context, NULL);
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
return success;
}
@ -579,14 +520,8 @@ gst_vaapi_window_glx_swap_buffers(GstVaapiWindowGLX *window)
g_return_if_fail(window->priv->is_constructed);
GST_VAAPI_OBJECT_LOCK_DISPLAY(window);
gl_swap_buffers(
GST_VAAPI_OBJECT_XDISPLAY(window),
GST_VAAPI_OBJECT_ID(window)
);
glClear(GL_COLOR_BUFFER_BIT);
gl_swap_buffers(window->priv->gl_context);
GST_VAAPI_OBJECT_UNLOCK_DISPLAY(window);
window->priv->swapped_buffers = TRUE;
}
/**