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gl: Set correct operation extents.

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The dst_x and dst_y should be considered when setting clip extents,
because they are not always be zero. (for example, in clip-operator.c)
This commit is contained in:
Chuanbo Weng 2012-06-26 08:02:35 +08:00 • committed by Chris Wilson
parent 9f52261dd7
commit 1bdee6b1ad
1 changed files with 6 additions and 1 deletions
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7
src/cairo-gl-glyphs.c
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@ -372,6 +372,7 @@ render_glyphs_via_mask (cairo_gl_surface_t *dst,
if (likely (status == CAIRO_STATUS_SUCCESS)) {
cairo_surface_pattern_t mask_pattern;
cairo_surface_pattern_t source_pattern;
cairo_rectangle_int_t clip_extents;
mask->is_clear = FALSE;
_cairo_pattern_init_for_surface (&mask_pattern, mask);
@ -387,7 +388,11 @@ render_glyphs_via_mask (cairo_gl_surface_t *dst,
dst_x-info->extents.x, dst_y-info->extents.y);
clip = _cairo_clip_copy (clip);
clip = _cairo_clip_intersect_rectangle (clip, &info->extents);
clip_extents.x = info->extents.x - dst_x;
clip_extents.y = info->extents.y - dst_y;
clip_extents.width = info->extents.width;
clip_extents.height = info->extents.height;
clip = _cairo_clip_intersect_rectangle (clip, &clip_extents);
status = _cairo_surface_mask (&dst->base, op,
&source_pattern.base,