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Reduce SVG re-renders with larger cache tiles

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This commit is contained in:
Lovell Fuller 2018-05-09 20:20:01 +01:00
parent 258edf3325
commit 76bc64ca3c
1 changed files with 8 additions and 8 deletions
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16
libvips/foreign/svgload.c
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@ -67,6 +67,10 @@
#include <cairo.h>
#include <librsvg/rsvg.h>
/* The maximum pixel width librsvg is able to render.
*/
#define RSVG_MAX_WIDTH 32767
/* Old librsvg versions don't include librsvg-features.h by default.
* Newer versions deprecate direct inclusion.
*/
@ -359,14 +363,8 @@ vips_foreign_load_svg_load( VipsForeignLoad *load )
int tile_width;
int tile_height;
int n_lines;
int max_tiles;
/* Use this to pick a tile height for our strip cache.
*/
vips_get_tile_size( load->real,
&tile_width, &tile_height, &n_lines );
/* Read to this image, then cache to out, see below.
*/
t[0] = vips_image_new();
@ -383,9 +381,11 @@ vips_foreign_load_svg_load( VipsForeignLoad *load )
* Don't thread the cache: we rely on this to keep calls to rsvg
* single-threaded.
*/
max_tiles = 3 * VIPS_ROUND_UP( t[0]->Xsize, 30000 ) / 30000;
tile_width = VIPS_MIN( t[0]->Xsize, RSVG_MAX_WIDTH );
tile_height = t[0]->Ysize;
max_tiles = VIPS_ROUND_UP( t[0]->Xsize, RSVG_MAX_WIDTH ) / RSVG_MAX_WIDTH;
if( vips_tilecache( t[0], &t[1],
"tile_width", 30000,
"tile_width", tile_width,
"tile_height", tile_height,
"max_tiles", max_tiles,
"access", VIPS_ACCESS_SEQUENTIAL,