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libgstgl: fix rendering on iOS

Browse source 
Stop assuming that the handle has been set by the time ->create_context is
called. After bc7a7259f3 set_window_handle always
happens after ->create_context in fact.

See also https://bugzilla.gnome.org/show_bug.cgi?id=745090
This commit is contained in:
Alessandro Decina 2015-04-02 18:05:55 +11:00
parent 5a6024850c
commit 6981a8d15b
3 changed files with 127 additions and 96 deletions
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1
gst-libs/gst/gl/eagl/gstglcontext_eagl.h
View file

@ -59,6 +59,7 @@ GType gst_gl_context_eagl_get_type (void);
GstGLContextEagl * gst_gl_context_eagl_new (void);
void gst_gl_context_eagl_update_layer (GstGLContext * context);
void gst_gl_context_eagl_resize (GstGLContextEagl * eagl_context);
void gst_gl_context_eagl_prepare_draw (GstGLContextEagl * context);
void gst_gl_context_eagl_finish_draw (GstGLContextEagl * context);

218
gst-libs/gst/gl/eagl/gstglcontext_eagl.m
View file

@ -115,108 +115,13 @@ gst_gl_context_eagl_resize (GstGLContextEagl * eagl_context)
height);
}
static gboolean
gst_gl_context_eagl_create_context (GstGLContext * context, GstGLAPI gl_api,
GstGLContext * other_context, GError ** error)
{
GstGLContextEagl *context_eagl = GST_GL_CONTEXT_EAGL (context);
GstGLContextEaglPrivate *priv = context_eagl->priv;
GstGLWindow *window = gst_gl_context_get_window (context);
UIView *window_handle = nil;
dispatch_sync (dispatch_get_main_queue (), ^{
if (other_context) {
EAGLContext *external_gl_context = (EAGLContext *)
gst_gl_context_get_gl_context (other_context);
EAGLSharegroup *share_group = [external_gl_context sharegroup];
priv->eagl_context = [[EAGLContext alloc] initWithAPI: kEAGLRenderingAPIOpenGLES2 sharegroup:share_group];
[share_group release];
} else {
priv->eagl_context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
}
});
if (window)
window_handle = (UIView *) gst_gl_window_get_window_handle (window);
if (window_handle) {
__block GLuint framebuffer;
__block GLuint color_renderbuffer;
__block GLuint depth_renderbuffer;
__block GLint width;
__block GLint height;
__block CAEAGLLayer *eagl_layer;
GLenum status;
dispatch_sync (dispatch_get_main_queue (), ^{
eagl_layer = (CAEAGLLayer *)[window_handle layer];
[EAGLContext setCurrentContext:priv->eagl_context];
/* Allocate framebuffer */
glGenFramebuffers (1, &framebuffer);
glBindFramebuffer (GL_FRAMEBUFFER, framebuffer);
/* Allocate color render buffer */
glGenRenderbuffers (1, &color_renderbuffer);
glBindRenderbuffer (GL_RENDERBUFFER, color_renderbuffer);
[priv->eagl_context renderbufferStorage: GL_RENDERBUFFER fromDrawable:eagl_layer];
glFramebufferRenderbuffer (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_RENDERBUFFER, color_renderbuffer);
/* Get renderbuffer width/height */
glGetRenderbufferParameteriv (GL_RENDERBUFFER, GL_RENDERBUFFER_WIDTH,
&width);
glGetRenderbufferParameteriv (GL_RENDERBUFFER, GL_RENDERBUFFER_HEIGHT,
&height);
/* allocate depth render buffer */
glGenRenderbuffers (1, &depth_renderbuffer);
glBindRenderbuffer (GL_RENDERBUFFER, depth_renderbuffer);
glRenderbufferStorage (GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, width,
height);
glFramebufferRenderbuffer (GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT,
GL_RENDERBUFFER, depth_renderbuffer);
[EAGLContext setCurrentContext:nil];
});
[EAGLContext setCurrentContext:priv->eagl_context];
glBindFramebuffer (GL_FRAMEBUFFER, framebuffer);
/* check creation status */
status = glCheckFramebufferStatus (GL_FRAMEBUFFER);
if (status != GL_FRAMEBUFFER_COMPLETE) {
GST_ERROR ("Failed to make complete framebuffer object %x", status);
if (window)
gst_object_unref (window);
return FALSE;
}
glBindFramebuffer (GL_FRAMEBUFFER, 0);
priv->eagl_layer = eagl_layer;
priv->framebuffer = framebuffer;
priv->color_renderbuffer = color_renderbuffer;
priv->depth_renderbuffer = depth_renderbuffer;
} else {
priv->eagl_layer = NULL;
priv->framebuffer = 0;
priv->color_renderbuffer = 0;
priv->depth_renderbuffer = 0;
}
if (window)
gst_object_unref (window);
return TRUE;
}
static void
gst_gl_context_eagl_destroy_context (GstGLContext * context)
gst_gl_context_eagl_release_layer (GstGLContext * context)
{
GstGLContextEagl *context_eagl;
context_eagl = GST_GL_CONTEXT_EAGL (context);
if (!context_eagl->priv->eagl_context)
return;
if (context_eagl->priv->eagl_layer) {
gst_gl_context_eagl_activate (context, TRUE);
@ -233,6 +138,127 @@ gst_gl_context_eagl_destroy_context (GstGLContext * context)
context_eagl->priv->eagl_layer = nil;
gst_gl_context_eagl_activate (context, FALSE);
}
}
void
gst_gl_context_eagl_update_layer (GstGLContext * context)
{
__block GLuint framebuffer;
__block GLuint color_renderbuffer;
__block GLuint depth_renderbuffer;
__block GLint width;
__block GLint height;
__block CAEAGLLayer *eagl_layer;
GLenum status;
GstGLContextEagl *context_eagl = GST_GL_CONTEXT_EAGL (context);
GstGLContextEaglPrivate *priv = context_eagl->priv;
UIView *window_handle = nil;
GstGLWindow *window = gst_gl_context_get_window (context);
if (window)
window_handle = (UIView *) gst_gl_window_get_window_handle (window);
if (!window_handle) {
GST_INFO_OBJECT (context, "window handle not set yet, not updating layer");
goto out;
}
GST_INFO_OBJECT (context, "updating layer, frame %fx%f",
window_handle.frame.size.width, window_handle.frame.size.height);
if (priv->eagl_layer)
gst_gl_context_eagl_release_layer (context);
dispatch_sync (dispatch_get_main_queue (), ^{
eagl_layer = (CAEAGLLayer *)[window_handle layer];
[EAGLContext setCurrentContext:priv->eagl_context];
/* Allocate framebuffer */
glGenFramebuffers (1, &framebuffer);
glBindFramebuffer (GL_FRAMEBUFFER, framebuffer);
/* Allocate color render buffer */
glGenRenderbuffers (1, &color_renderbuffer);
glBindRenderbuffer (GL_RENDERBUFFER, color_renderbuffer);
[priv->eagl_context renderbufferStorage: GL_RENDERBUFFER fromDrawable:eagl_layer];
glFramebufferRenderbuffer (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_RENDERBUFFER, color_renderbuffer);
/* Get renderbuffer width/height */
glGetRenderbufferParameteriv (GL_RENDERBUFFER, GL_RENDERBUFFER_WIDTH,
&width);
glGetRenderbufferParameteriv (GL_RENDERBUFFER, GL_RENDERBUFFER_HEIGHT,
&height);
/* allocate depth render buffer */
glGenRenderbuffers (1, &depth_renderbuffer);
glBindRenderbuffer (GL_RENDERBUFFER, depth_renderbuffer);
glRenderbufferStorage (GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, width,
height);
glFramebufferRenderbuffer (GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT,
GL_RENDERBUFFER, depth_renderbuffer);
[EAGLContext setCurrentContext:nil];
});
[EAGLContext setCurrentContext:priv->eagl_context];
glBindFramebuffer (GL_FRAMEBUFFER, framebuffer);
/* check creation status */
status = glCheckFramebufferStatus (GL_FRAMEBUFFER);
if (status != GL_FRAMEBUFFER_COMPLETE) {
GST_ERROR ("Failed to make complete framebuffer object %x", status);
goto out;
}
glBindFramebuffer (GL_FRAMEBUFFER, 0);
priv->eagl_layer = eagl_layer;
priv->framebuffer = framebuffer;
priv->color_renderbuffer = color_renderbuffer;
priv->depth_renderbuffer = depth_renderbuffer;
out:
if (window)
gst_object_unref (window);
}
static gboolean
gst_gl_context_eagl_create_context (GstGLContext * context, GstGLAPI gl_api,
GstGLContext * other_context, GError ** error)
{
GstGLContextEagl *context_eagl = GST_GL_CONTEXT_EAGL (context);
GstGLContextEaglPrivate *priv = context_eagl->priv;
dispatch_sync (dispatch_get_main_queue (), ^{
if (other_context) {
EAGLContext *external_gl_context = (EAGLContext *)
gst_gl_context_get_gl_context (other_context);
EAGLSharegroup *share_group = [external_gl_context sharegroup];
priv->eagl_context = [[EAGLContext alloc] initWithAPI: kEAGLRenderingAPIOpenGLES2 sharegroup:share_group];
[share_group release];
} else {
priv->eagl_context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
}
});
priv->eagl_layer = NULL;
priv->framebuffer = 0;
priv->color_renderbuffer = 0;
priv->depth_renderbuffer = 0;
GST_INFO_OBJECT (context, "context created, updating layer");
gst_gl_context_eagl_update_layer (context);
return TRUE;
}
static void
gst_gl_context_eagl_destroy_context (GstGLContext * context)
{
GstGLContextEagl *context_eagl;
context_eagl = GST_GL_CONTEXT_EAGL (context);
if (!context_eagl->priv->eagl_context)
return;
gst_gl_context_eagl_release_layer (context);
[context_eagl->priv->eagl_context release];
context_eagl->priv->eagl_context = nil;

4
gst-libs/gst/gl/eagl/gstglwindow_eagl.m
View file

@ -139,10 +139,14 @@ static void
gst_gl_window_eagl_set_window_handle (GstGLWindow * window, guintptr handle)
{
GstGLWindowEagl *window_eagl;
GstGLContext *context;
window_eagl = GST_GL_WINDOW_EAGL (window);
context = gst_gl_window_get_context (window);
window_eagl->priv->view = (UIView *) handle;
GST_INFO_OBJECT (context, "handle set, updating layer");
gst_gl_context_eagl_update_layer (context);
}
static gboolean