fb: add frame_{width,height} to fb_fragment_t

Modules need to know the overall dimensions of the frame the fragment
they're rendering is part of.  Previously it wasn't really necessary
since the fragments supplied to the modules had always been the full
page, but that's changing.

This commit also changes the julia module to use the frame dimensions,
others will need updating as well.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/fb.h b/src/fb.h
index e8d818f..c1cee17 100644
--- a/src/fb.h
+++ b/src/fb.h
@@ -14,6 +14,8 @@ typedef struct fb_fragment_t {
 	uint32_t	*buf;		/* pointer to the first pixel in the fragment */
 	unsigned	x, y;		/* absolute coordinates of the upper left corner of this fragment */
 	unsigned	width, height;	/* width and height of this fragment */
+	unsigned	frame_width;	/* width of the frame this fragment is part of */
+	unsigned	frame_height;	/* height of the frame this fragment is part of */
 	unsigned	stride;		/* number of bytes from the end of one row to the start of the next */
 } fb_fragment_t;