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window-actor: Paint the shape region with cairo
https://bugzilla.gnome.org/show_bug.cgi?id=676052
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@ -2000,9 +2000,9 @@ generate_mask (MetaWindowActor *self,
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guchar *mask_data;
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guint tex_width, tex_height;
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CoglHandle paint_tex, mask_texture;
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int i;
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int n_rects;
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int stride;
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cairo_t *cr;
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cairo_surface_t *surface;
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paint_tex = meta_shaped_texture_get_texture (META_SHAPED_TEXTURE (priv->actor));
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if (paint_tex == COGL_INVALID_HANDLE)
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@ -2016,30 +2016,18 @@ generate_mask (MetaWindowActor *self,
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/* Create data for an empty image */
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mask_data = g_malloc0 (stride * tex_height);
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n_rects = cairo_region_num_rectangles (shape_region);
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surface = cairo_image_surface_create_for_data (mask_data,
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CAIRO_FORMAT_A8,
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tex_width,
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tex_height,
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stride);
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cr = cairo_create (surface);
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/* Fill in each rectangle. */
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for (i = 0; i < n_rects; i ++)
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{
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cairo_rectangle_int_t rect;
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cairo_region_get_rectangle (shape_region, i, &rect);
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gdk_cairo_region (cr, shape_region);
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cairo_fill (cr);
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gint x1 = rect.x, x2 = x1 + rect.width;
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gint y1 = rect.y, y2 = y1 + rect.height;
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guchar *p;
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/* Clip the rectangle to the size of the texture */
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x1 = CLAMP (x1, 0, (gint) tex_width - 1);
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x2 = CLAMP (x2, x1, (gint) tex_width);
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y1 = CLAMP (y1, 0, (gint) tex_height - 1);
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y2 = CLAMP (y2, y1, (gint) tex_height);
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/* Fill the rectangle */
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for (p = mask_data + y1 * stride + x1;
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y1 < y2;
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y1++, p += stride)
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memset (p, 255, x2 - x1);
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}
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cairo_destroy (cr);
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cairo_surface_destroy (surface);
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if (meta_texture_rectangle_check (paint_tex))
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{
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