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pdf: Remove redundant clip regions

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If the extents of the operation is wholly contained within the clip
region, then we can safely not invoke any clipping.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2011-07-29 13:03:59 +01:00
parent 29a302cc4b
commit 6ed0c6224b
1 changed files with 21 additions and 6 deletions
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27
src/cairo-pdf-surface.c
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@ -5743,6 +5743,21 @@ cleanup:
return status;
}
static cairo_int_status_t
_cairo_pdf_surface_set_clip (cairo_pdf_surface_t *surface,
cairo_composite_rectangles_t *composite)
{
cairo_clip_t *clip = composite->clip;
if (_cairo_clip_is_region (clip) &&
cairo_region_contains_rectangle (_cairo_clip_get_region (clip),
&composite->unbounded) == CAIRO_REGION_OVERLAP_IN)
{
clip = NULL;
}
return _cairo_surface_clipper_set_clip (&surface->clipper, clip);
}
static cairo_int_status_t
_cairo_pdf_surface_paint (void *abstract_surface,
@ -5777,7 +5792,7 @@ _cairo_pdf_surface_paint (void *abstract_surface,
assert (_cairo_pdf_surface_operation_supported (surface, op, source, &extents.bounded));
status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
status = _cairo_pdf_surface_set_clip (surface, &extents);
if (unlikely (status))
return status;
@ -5910,7 +5925,7 @@ _cairo_pdf_surface_mask (void *abstract_surface,
assert (_cairo_pdf_surface_operation_supported (surface, op, source, &extents.bounded));
assert (_cairo_pdf_surface_operation_supported (surface, op, mask, &extents.bounded));
status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
status = _cairo_pdf_surface_set_clip (surface, &extents);
if (unlikely (status))
return status;
@ -6019,7 +6034,7 @@ _cairo_pdf_surface_stroke (void *abstract_surface,
assert (_cairo_pdf_surface_operation_supported (surface, op, source, &extents.bounded));
status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
status = _cairo_pdf_surface_set_clip (surface, &extents);
if (unlikely (status))
return status;
@ -6150,7 +6165,7 @@ _cairo_pdf_surface_fill (void *abstract_surface,
assert (_cairo_pdf_surface_operation_supported (surface, op, source, &extents.bounded));
status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
status = _cairo_pdf_surface_set_clip (surface, &extents);
if (unlikely (status))
return status;
@ -6297,7 +6312,7 @@ _cairo_pdf_surface_fill_stroke (void *abstract_surface,
if (fill_op != stroke_op)
return CAIRO_INT_STATUS_UNSUPPORTED;
status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
status = _cairo_pdf_surface_set_clip (surface, &extents);
if (unlikely (status))
return status;
@ -6443,7 +6458,7 @@ _cairo_pdf_surface_show_text_glyphs (void *abstract_surface,
assert (_cairo_pdf_surface_operation_supported (surface, op, source, &extents.bounded));
status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
status = _cairo_pdf_surface_set_clip (surface, &extents);
if (unlikely (status))
return status;