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glmemory: Provide correct size on upload

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Provide the right size to GL when uploading. Using maxsize is wrong
since we offset the data point with the memory offset and video
alignement offset.

https://bugzilla.gnome.org/show_bug.cgi?id=744246
This commit is contained in:
Nicolas Dufresne 2015-02-28 13:01:16 -05:00
parent e9bec9ec0e
commit 8c0fcef818
1 changed files with 4 additions and 1 deletions
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5
gst-libs/gst/gl/gstglmemory.c
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@ -655,9 +655,12 @@ _download_memory (GstGLContext * context, GstGLMemory * gl_mem)
gl->GetTexImage (gl_mem->tex_target, 0, format, type, gl_mem->data);
gl->BindTexture (gl_mem->tex_target, 0);
} else if (gl_mem->transfer_pbo && CONTEXT_SUPPORTS_PBO_DOWNLOAD (context)) {
gsize size = ((GstMemory *) gl_mem)->maxsize;
gsize size;
gpointer map_data = NULL;
size = gst_gl_get_plane_data_size (&gl_mem->info, &gl_mem->valign,
gl_mem->plane);
gl->BindBuffer (GL_PIXEL_PACK_BUFFER, gl_mem->transfer_pbo);
map_data =
gl->MapBufferRange (GL_PIXEL_PACK_BUFFER, 0, size, GL_MAP_READ_BIT);