tventi: fix venti graph on 64-bit - plan9port - [fork] Plan 9 from user space

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commit 4a8c0c75ffd40d08837d6937e1e995c68ceb276e

parent 7e77a6a569011530d6442d91d20d011d2f01424d

Author: Michael Stroucken 

Date:   Fri, 21 Jul 2017 19:33:55 -0400

venti: fix venti graph on 64-bit

A pixel is 32 bits wide in RGBA, regardless of system's word size.

Change-Id: Iea36a8dafdec9ce8d593f944ef5ed1ea08e11d25
Reviewed-on: https://plan9port-review.googlesource.com/2980
Reviewed-by: David du Colombier <0intro@gmail.com>

Diffstat:
  M CONTRIBUTORS                        |       1 +
  M src/cmd/venti/srv/png.c             |       2 +-

2 files changed, 2 insertions(+), 1 deletion(-)
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diff --git a/CONTRIBUTORS b/CONTRIBUTORS

t@@ -35,6 +35,7 @@ Marius Eriksen 
 Martin Neubauer 
 Mathieu Lonjaret 
 Mathieu Lonjaret 
+Michael Stroucken 
 Michael Teichgräber 
 Michael Teichgräber 
 Nathaniel W Filardo  

diff --git a/src/cmd/venti/srv/png.c b/src/cmd/venti/srv/png.c

t@@ -212,7 +212,7 @@ writepng(Hio *io, Memimage *m)
         /* image data */
         zr.dx = Dx(m->r);
         zr.dy = Dy(m->r);
-        zr.width = rgb->width * sizeof(ulong);
+        zr.width = rgb->width * sizeof(u32int);
         zr.data = rgb->data->bdata;
         zr.x = 0;
         zr.y = 0;