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Add some debug output for the glyph cache

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Print out some statistics and dump the glyph caches to a png,
for now.
This commit is contained in:
Matthias Clasen 2017-09-19 23:59:44 -04:00
parent baeff2a49b
commit 6dbec5e4fc
3 changed files with 26 additions and 2 deletions
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3
gsk/gskdebug.c
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@ -10,7 +10,8 @@ static const GDebugKey gsk_debug_keys[] = {
{ "transforms", GSK_DEBUG_TRANSFORMS },
{ "surface", GSK_DEBUG_SURFACE },
{ "vulkan", GSK_DEBUG_VULKAN },
{ "fallback", GSK_DEBUG_FALLBACK }
{ "fallback", GSK_DEBUG_FALLBACK },
{ "glyphcache", GSK_DEBUG_GLYPH_CACHE }
};
#endif

3
gsk/gskdebugprivate.h
View File

@ -14,7 +14,8 @@ typedef enum {
GSK_DEBUG_TRANSFORMS = 1 << 5,
GSK_DEBUG_SURFACE = 1 << 6,
GSK_DEBUG_VULKAN = 1 << 7,
GSK_DEBUG_FALLBACK = 1 << 8
GSK_DEBUG_FALLBACK = 1 << 8,
GSK_DEBUG_GLYPH_CACHE = 1 << 9
} GskDebugFlags;
#define GSK_DEBUG_ANY ((1 << 9) - 1)

22
gsk/gskvulkanglyphcache.c
View File

@ -13,6 +13,7 @@ typedef struct {
GskVulkanImage *image;
int width, height;
int x, y, y0;
int num_glyphs;
} Atlas;
struct _GskVulkanGlyphCache {
@ -47,6 +48,7 @@ create_atlas (void)
atlas->x = 1;
atlas->surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, atlas->width, atlas->height);
atlas->image = NULL;
atlas->num_glyphs = 0;
return atlas;
}
@ -191,6 +193,8 @@ add_to_cache (GskVulkanGlyphCache *cache,
atlas->x = atlas->x + value->draw_width + 1;
atlas->y = MAX (atlas->y, atlas->y0 + value->draw_height + 1);
atlas->num_glyphs++;
value->tx = (cg.x + value->draw_x) / atlas->width;
value->ty = (cg.y + value->draw_y) / atlas->height;
value->tw = (float)value->draw_width / atlas->width;
@ -199,6 +203,24 @@ add_to_cache (GskVulkanGlyphCache *cache,
value->texture_index = i;
g_clear_object (&atlas->image); /* force re-upload */
#ifdef G_ENABLE_DEBUG
if (GSK_DEBUG_CHECK(GLYPH_CACHE))
{
gchar buffer[256];
g_print ("Glyph cache:\n");
for (i = 0; i < cache->atlases->len; i++)
{
atlas = g_ptr_array_index (cache->atlases, i);
g_print ("\tAtlas %d (%dx%d): %d glyphs, filled to %d, %d / %d\n",
i, atlas->width, atlas->height, atlas->num_glyphs,
atlas->x, atlas->y0, atlas->y);
snprintf (buffer, sizeof (buffer), "gsk-vulkan-glyph-cache-%d-%d.png", i, atlas->num_glyphs);
cairo_surface_write_to_png (atlas->surface, buffer);
}
}
#endif
}
GskVulkanGlyphCache *