Export API for uploading a tex subregion from a CoglBuffer

This exposes 2 experimental functions that make it possible to upload a
subregion of a texture from a CoglBuffer by first wrapping the buffer as
a CoglBitmap and then allowing uploading of a subregion from a
CoglBitmap. The new functions are:

cogl_bitmap_new_from_buffer() and
cogl_texture_set_region_from_bitmap()

Actually for now we are exporting this API for practical reasons since
we already had this API internally and it enables a specific feature
that was requested, but it is worth nothing that it's quite likely we
will replace these with functions that don't involve the CoglBitmap API
at some point.

For reference: The CoglBitmap API was actually removed from the 2.0
experimental API reference manual some time ago because the hope was
that we'd come up with a neater replacement. It doesn't seem entirely
clear what the scope of the CoglBitmap api is so it has became a bit of
a dumping ground.  CoglBitmap is used for image loading, as a means to
represent the layout of image data and also internally deals with format
conversions.

Note: Because we are avoiding including CoglBitmap as part of the 2.0
API these functions aren't currently included in the 2.0 reference
manual.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

1 files changed, 6 insertions, 6 deletions

diff --git a/cogl/cogl-bitmap.c b/cogl/cogl-bitmap.c
index 88ad073b..781e6f8d 100644
--- a/cogl/cogl-bitmap.c
+++ b/cogl/cogl-bitmap.c
@@ -327,12 +327,12 @@ cogl_bitmap_new_from_file (const char  *filename,
 }
 
 CoglBitmap *
-_cogl_bitmap_new_from_buffer (CoglBuffer      *buffer,
-                              CoglPixelFormat  format,
-                              int              width,
-                              int              height,
-                              int              rowstride,
-                              int              offset)
+cogl_bitmap_new_from_buffer (CoglBuffer *buffer,
+                             CoglPixelFormat format,
+                             int width,
+                             int height,
+                             int rowstride,
+                             int offset)
 {
   CoglBitmap *bmp;