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cogl-pango-glyph-cache: Don't put zero-sized glyphs in the cache

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It now avoids trying to reserve space for zero-sized glyphs. That
happens for example when the layout contains a space. This was causing
the regular glyph cache to be used because the global atlas does not
support zero-sized images. That would then break up the
batching. Instead it now still reserves an entry in the cache but
leaves the texture as COGL_INVALID_HANDLE.
This commit is contained in:
Neil Roberts
2010-02-22 16:40:49 +00:00
committed by Robert Bragg
parent f098f8fdec
commit b83069f3b2
2 changed files with 30 additions and 16 deletions
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7
pango/cogl-pango-render.c
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@@ -501,6 +501,11 @@ cogl_pango_renderer_set_dirty_glyph (PangoFont *font,
COGL_NOTE (PANGO, "redrawing glyph %i", glyph);
/* Glyphs that don't take up any space will end up without a
texture. These should never become dirty so they shouldn't end up
here */
g_return_if_fail (value->texture != COGL_INVALID_HANDLE);
surface = cairo_image_surface_create (CAIRO_FORMAT_A8,
value->draw_width,
value->draw_height);
@@ -824,7 +829,7 @@ cogl_pango_renderer_draw_glyphs (PangoRenderer *renderer,
PANGO_UNKNOWN_GLYPH_WIDTH,
PANGO_UNKNOWN_GLYPH_HEIGHT);
}
else
else if (cache_value->texture)
{
x += (float)(cache_value->draw_x);
y += (float)(cache_value->draw_y);