TruePaint/Prism Paint file format - Revision history

AtariWikiSysop: 6 revisions imported

2018-06-03T23:14:17Z

6 revisions imported

Lp: updated info

2017-02-11T21:20:14Z

updated info

Lp: updated info

2017-02-11T20:57:20Z

updated info

Lp: updated info

2017-02-11T20:41:20Z

updated info

Lp at 05:59, 3 February 2017

2017-02-03T05:59:55Z

Lp: Typos

2017-02-02T22:30:39Z

Typos

Lp: New page

2017-01-03T00:34:52Z

New page

New page

<pre>
TruePaint *.TPI
Prism Paint *.PNT

1 long $504e5400 'PNT ' TruePaint Magic
1 word $0100 ???? file version
1 word palette_size Might be there in true color
1 word x_size
1 word y_size
1 word bits_per_pixel
1 word compression, $0000 uncompressed, $0001 prsimpaint compressed
1 long picture_data_size = ((x_size+15)&0xffff0)*y_size*bits_per_pixel/8
(uncompressed)
108 bytes $0
---------
128 bytes total for header

3*palette_size words Palette data, RGB, values 0..1000. The colors are in
VDI order

picture_data_size bytes Interleaved bitplanes for bits_per_pixel<16, a 16 bit
word per pixel for 16-bit pictures, RRRRrGGGGGgBBBBBb.
The line length is a multiple of 16 pixels for all bit depths
The prism paint compressed format uses the packbits compression algorithm. For every
scanline the bitplanes are compressed seperately. The falcon high color resolution
(16 bit) is compressed as if there were 16 bitplanes, which there are not.
</pre>
See also [[PackBits Compression Algorithm]]

Back to [[ST Picture Formats]]

@@ Line 23: / Line 23: @@
 bit is stored R, G, B in that order
-The prism paint compressed format uses the packbits compression algorithm. For every
+The prism paint compressed format uses the Packbits compression algorithm. For every
 scanline the bitplanes are compressed separately. The falcon high-color resolution
 (16 bit) is compressed as if there were 16 bitplanes, which there are not.
 The same rule applies to 24 bits per pixel.
 </pre>
 See also [[PackBits Compression Algorithm]]
 Back to [[ST Picture Formats]]

← Older revision	Revision as of 23:14, 3 June 2018
(No difference)

@@ Line 1: / Line 1: @@
 <pre>
-TruePaint       *.TPI *.TPA
+TruePaint       *.TPI
 Prism Paint     *.PNT
@@ Line 16: / Line 16: @@
 bytes       total for header
-*palette_size     words   Palette data, RGB, values 0..1000. The colors are in
+*palette_size     words   Palette data, RGB, values 0..1000. The colors are in VDI order
-picture_data_size  bytes   Interleaved bitplanes for bits_per_pixel<16, a 16 bit
+picture_data_size  bytes   The line length is a multiple of 16 pixels for all bit depths
-                           word per pixel for 16-bit pictures, RRRRrGGGGGgBBBBBb.
+                           Interleaved bitplanes for bits_per_pixel<16
-                            The line length is a multiple of 16 pixels for all bit depths
+bit word per pixel for 16-bit pictures, RRRRrGGGGGgBBBBBb
 The prism paint compressed format uses the packbits compression algorithm. For every
-scanline the bitplanes are compressed separately. The falcon high color resolution
+scanline the bitplanes are compressed separately. The falcon high-color resolution
 (16 bit) is compressed as if there were 16 bitplanes, which there are not.
+The same rule applies to 24 bits per pixel.
 </pre>
 See also [[PackBits Compression Algorithm]]
 Back to [[ST Picture Formats]]

@@ Line 3: / Line 3: @@
 Prism Paint     *.PNT
-long        $504e5400 'PNT ' TruePaint Magic
+long        $504e5400 'PNT\0' TruePaint Magic
-word        $0100            ???? file version
+word        $0100             ???? file version
-word        palette_size     Might be there in true color
+word        palette_size      Might be there in true color
 word        x_size
 word        y_size

@@ Line 9: / Line 9: @@
 word        y_size
 word        bits_per_pixel
-word        compression, $0000 uncompressed, $0001 prsimpaint compressed
+word        compression, $0000 uncompressed, $0001 packbits compressed
 long        picture_data_size = ((x_size+15)&0xffff0)*y_size*bits_per_pixel/8
                  (uncompressed)
@@ Line 23: / Line 23: @@
                             The line length is a multiple of 16 pixels for all bit depths
 The prism paint compressed format uses the packbits compression algorithm. For every
-scanline the bitplanes are compressed seperately. The falcon high color resolution
+scanline the bitplanes are compressed separately. The falcon high color resolution
 (16 bit) is compressed as if there were 16 bitplanes, which there are not.
 </pre>