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[156/906] fix a crash that could happens when using at least 2 gl context and when closing a window on linux

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This commit is contained in:
Julien Isorce 2008-08-13 17:16:17 +02:00 committed by Matthew Waters
parent 8e8a9b8fd5
commit d0203c1172
2 changed files with 23 additions and 20 deletions
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21
gst-libs/gst/gl/gstgldisplay.c
View file

@ -253,6 +253,19 @@ gst_gl_display_init (GstGLDisplay *display, GstGLDisplayClass *klass)
" gl_FragColor = vec4(r, g, b, 1.0);\n"
"}\n";
//it works on nvidia+linux but
//there is a bug on ATI+win32 (I think only ATI)
//and the follwing 3 lines:
//" y=texture2DRect(Ytex,nxy).r;\n"
//" u=texture2DRect(Utex,nxy*0.5).r;\n"
//" v=texture2DRect(Vtex,nxy*0.5).r;\n"
//has to be replaced by :
//" y=texture2DRect(Ytex,nxy0.5).r;\n"
//" u=texture2DRect(Utex,nxy).r;\n"
//" v=texture2DRect(Vtex,nxy*0.5).r;\n"
//
//so we have to set a display->hardware (ATI/ NVIDIA)
//and check it etc...
display->text_shader_upload_I420_YV12 =
"#extension GL_ARB_texture_rectangle : enable\n"
"uniform sampler2DRect Ytex,Utex,Vtex;\n"
@ -1725,7 +1738,7 @@ gst_gl_display_glgen_texture (GstGLDisplay* display, GLuint* pTexture, GLint wid
gchar string_size[512];
GQueue* sub_texture_pool = NULL;
sprintf (string_size, "%dx%d", width, height);
sub_texture_pool = g_datalist_get_data(&display->texture_pool, string_size);
//if the size is known
@ -1784,7 +1797,7 @@ gst_gl_display_gldel_texture (GstGLDisplay* display, GLuint* pTexture, GLint wid
gchar string_size[512];
GQueue* sub_texture_pool = NULL;
GstGLDisplayTex* tex = NULL;
sprintf (string_size, "%dx%d", width, height);
sub_texture_pool = g_datalist_get_data(&display->texture_pool, string_size);
//if the size is known
@ -2410,6 +2423,10 @@ gst_gl_display_thread_do_upload_fill (GstGLDisplay *display)
offsetU = 1;
offsetV = 2;
break;
//it works on ati+win32 but we have to use the same offset as
//I420 on nvidia + linux (I mean offsetU = 1; offsetV = 2;)
//So we have to set a display->hardware (ATI o/ NVIDIA) and
//etc...
case GST_VIDEO_FORMAT_YV12:
offsetU = 2;
offsetV = 1;

22
gst/gl/BUGS
View file

@ -1,22 +1,8 @@
known issues:
- gst-launch-0.10 videotestsrc ! glupload ! gldownload ! glimagesink
(or glcolorspace instead of glupload ! gldownload)
-> crash on linux when stopping (num_buffers=N or after clicking on the window cross)
(was working on win32)
(gst-launch-0.10 videotestsrc ! glupload ! gldownload ! glupload ! gldownload ! glupload ! gldownload ! ximagesink
crash when stopping)
(but not gst-launch-0.10 videotestsrc ! glupload ! gldownload ! glupload ! gldownload ! ximagesink)
log: ( Définition du pipeline à READY (prêt)...
Context 1 destroyed
Définition du pipeline à NULL...
Caught SIGSEGV accessing address 0x40 )
- gst-launch-0.10 videotestsrc ! tee name=t t. ! queue ! glimagesink t. ! queue ! glimagesink t. ! queue ! glimagesink
-> crash on linux when stopping (was working on win32 too)
It look likes it's related to the first issue.
- gst-launch-0.10 videotestsrc ! "video/x-raw-yuv, format=(fourcc)YV12" ! glimagesink
-> wrong color on linux (it look likes it uses text_shader_upload_I420 instead of YV12)
(I remember it was working on win32, so maybe we have made a regression)
-> wrong color on linux
ok it comes from hardware, it seems that on ati+win32 it works,
but on nvidia+linux we do not need to make a disctinction between I420 and YV12
(see comments in gst/gl/gstgldisplay.c line 256 and line 2426)