[8.5.2] Limits on Device Independent Image dimensions

CgDeviceIndependentImage class>>#width:height:depth:palette:scanlinePad:data: has a comment which claims to handle 32 bit deep images.
Table 117 in Appendix D. Common graphics platform differences claims that 32 bit is not supported.

Simplistic testing seems to support the documentation's claim over that of the code. Specifically, if I inspect a CgDeviceIndependentImage with depth = 32, the inspector cannot display the image (to the left of "self"). If I hack the depth instance variable to 24, suddenly the inspector can display an image. (It is a garbage image, but that isn't a surprise.)

It would be nice if VA could display 32 bit images, too.


[This was discovered on a Windows 7 platform.]

Hi Richard,

We are aware of this limitation and are actively working on it.

Donald

On Thursday, March 27, 2014 7:07:42 PM UTC-4, Richard Sargent wrote:

CgDeviceIndependentImage class>>#width:height:depth:palette:scanlinePad:data: has a comment which claims to handle 32 bit deep images.
Table 117 in Appendix D. Common graphics platform differences claims that 32 bit is not supported.

Simplistic testing seems to support the documentation's claim over that of the code. Specifically, if I inspect a CgDeviceIndependentImage with depth = 32, the inspector cannot display the image (to the left of "self"). If I hack the depth instance variable to 24, suddenly the inspector can display an image. (It is a garbage image, but that isn't a surprise.)

It would be nice if VA could display 32 bit images, too.


[This was discovered on a Windows 7 platform.]

I suspect a 32-bit image is still a problem - correct?

Donald,

Would one of you please point me to an image that does not work the way you think it should..

Thanks,

Donald

On Thursday, March 27, 2014 at 7:07:42 PM UTC-4, Richard Sargent wrote:

CgDeviceIndependentImage class>>#width:height:depth:palette:scanlinePad:data: has a comment which claims to handle 32 bit deep images.
Table 117 in Appendix D. Common graphics platform differences claims that 32 bit is not supported.

Simplistic testing seems to support the documentation's claim over that of the code. Specifically, if I inspect a CgDeviceIndependentImage with depth = 32, the inspector cannot display the image (to the left of "self"). If I hack the depth instance variable to 24, suddenly the inspector can display an image. (It is a garbage image, but that isn't a surprise.)

It would be nice if VA could display 32 bit images, too.


[This was discovered on a Windows 7 platform.]

Donald, Dave is out but should be able to send you a file later this week.