[Tilecache] Transparent backgrounds are black in Google Maps

[Roger André]

Tried that, still get black.  And I'm using Firefox, which I forgot to
mention earlier.
--

On Tue, Sep 23, 2008 at 7:04 PM, Arturo Torres <artorresv at yahoo.com.mx>wrote:

> Try using GIF's, IE6 does not support PNG transparency
>
>
> ----- Mensaje original ----
>
> Message: 1
> Date: Mon, 22 Sep 2008 14:17:06 -0700
> From: " Roger Andr? " <randre at gmail.com>
> Subject: [Tilecache] Transparent backgrounds are black in Google Maps
> To: tilecache at openlayers.org
> Message-ID:
>    <9c2015090809221417k722c8f15pdda00555265397a5 at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hi everyone,
>
> I'm fairly certain this has nothing to do with Tilecache, but I figure
> someone else using it may have encountered the same problem in the past.  I
> have a tile layer that's being served up as RGBA .png's with backgrounds
> set
> to transparent.  In everything beside by Google Maps web page, the
> backgrounds are transparent.  In Google Maps the backgrounds are displayed
> as black.
>
> gdalinfo says the following about the image type:
> Band 1 Block=731x1 Type=Byte, ColorInterp=Red
>  Mask Flags: PER_DATASET ALPHA
> Band 2 Block=731x1 Type=Byte, ColorInterp=Green
>  Mask Flags: PER_DATASET ALPHA
> Band 3 Block=731x1 Type=Byte, ColorInterp=Blue
>  Mask Flags: PER_DATASET ALPHA
> Band 4 Block=731x1 Type=Byte, ColorInterp=Alpha
>
> Pretty sure it's a problem on the display side, not the image creation or
> fetching side, but I'm having trouble tracking it down.
>
> Thanks,
>
> Roger
> --
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