Here’s a tricky one

Lorand · 09-02-2004, 02:19 PM

BTW, what’s the 32 bpp thing?
24 bpp means that there is 1 byte for each colour (R, G, B), thus 256 shades on every channel. This gives a total of 16.777.216 possible colours.
An RGB image saved in 32 bpp colour depth has in fact a 24 bpp RGB colour space combined with 1 byte alpha channel (for transparency). So it has also 16.777.216 possible colours.
But what’s the difference between the 24 bpp and the 32 bpp display setting? What’s the use of that extra byte?

**Praetor** · 09-02-2004, 03:08 PM

Quote:

Only happens in 32 bpp

Mine was 32bit and didnt have a problem.

As for 32bit, there IS a reason for it:

Quote:

TGA - The real name for this format is just plain "TGA" or "Truevision File Format", but a lot of people call it "Targa", after the Truevision video card that first used it. There's a lot of this name confusion in image file formats. It supports 1 to 32 bit images and professional features like an alpha (mask) channel, gamma settings and a built-in thumbnail image.

Quote:

32 bit textures are typically only tga (Targa) files. A 32 bit texture includes 'built in' transparency via an 8 bit alpha mask, which is laid over a 24 bit true color bitmap. This gives you up to 255 different variations in transparency, which is quite a few.

Mostly image/texture creation and gamedev will have actual use of 32bit color

Lorand · 09-04-2004, 01:25 AM

Look what I found:

Quote:

Some versions of XP and 2003 do not create 32bpp icons properly in the drivebar.

(This text was listed at some program's bugs.)
Is it possible that we have different versions of XP?

**Praetor** · 09-04-2004, 02:06 AM

Maybe, what build

Lorand · 09-04-2004, 10:11 AM

I have XP 5.1.2600 SP1

09-04-2004, 02:06 AM	#34 (permalink)
Praetor Administrator Join Date: Jul 2004 Location: Canada Age: 25 Posts: 19,954	Maybe, what build __________________ ASUS P5K Premium WiFi-AP, Q6600@3.7 / ASUS P5ND, E6400@3.8 4GB OCz Platinum XTC 8500 / 4GB CorsairXMS2 6400 5x500GB Seagate 7200.10 / 2x500 Seagate 7200.10 OCz 8800GTX 768MB @ 630/800 / 2x Galaxy 8800GT SLI

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09-02-2004, 02:19 PM	#31 (permalink)
Lorand VIP Member Join Date: Dec 2003 Location: Bucharest Age: 42 Posts: 3,042	BTW, what’s the 32 bpp thing? 24 bpp means that there is 1 byte for each colour (R, G, B), thus 256 shades on every channel. This gives a total of 16.777.216 possible colours. An RGB image saved in 32 bpp colour depth has in fact a 24 bpp RGB colour space combined with 1 byte alpha channel (for transparency). So it has also 16.777.216 possible colours. But what’s the difference between the 24 bpp and the 32 bpp display setting? What’s the use of that extra byte?

09-04-2004, 10:11 AM	#35 (permalink)
Lorand VIP Member Join Date: Dec 2003 Location: Bucharest Age: 42 Posts: 3,042	I have XP 5.1.2600 SP1