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bitmap: Add a function to convert into an existing buffer

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This adds _cogl_bitmap_convert_into_bitmap which is the same as
_cogl_bitmap_convert except that it writes into an existing bitmap
instead of allocating a new one. _cogl_bitmap_convert now just
allocates a buffer and calls the new function. This is used in
_cogl_read_pixels to avoid allocating a second intermediate buffer
when the pixel format to store in is not GL_RGBA.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
This commit is contained in:
Neil Roberts
2012-03-01 14:44:41 +00:00
parent f4cd5aceb9
commit 031dd661c0
4 changed files with 88 additions and 41 deletions
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6
cogl/cogl-bitmap-private.h
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@@ -87,6 +87,10 @@ CoglBitmap *
_cogl_bitmap_convert (CoglBitmap *bmp,
CoglPixelFormat dst_format);
gboolean
_cogl_bitmap_convert_into_bitmap (CoglBitmap *src_bmp,
CoglBitmap *dst_bmp);
CoglBitmap *
_cogl_bitmap_from_file (const char *filename,
GError **error);
@@ -101,7 +105,7 @@ gboolean
_cogl_bitmap_convert_premult_status (CoglBitmap *bmp,
CoglPixelFormat dst_format);
void
gboolean
_cogl_bitmap_copy_subregion (CoglBitmap *src,
CoglBitmap *dst,
int src_x,