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Small comment fixups

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One factual pointed out in the review in
https://bugzilla.gnome.org/show_bug.cgi?id=734053, plus some
formatting nit picks.
This commit is contained in:
Matthias Clasen 2014-08-03 00:42:48 +02:00
parent f5d8f75c0f
commit 1c34ad2668
1 changed files with 8 additions and 9 deletions
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17
gtk/gtkcairoblur.c
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@ -56,7 +56,7 @@ blur_xspan (guchar *row,
* be well predicted and there are enough different possibilities * be well predicted and there are enough different possibilities
* that trying to write this as a series of unconditional loops * that trying to write this as a series of unconditional loops
* is hard and not an obvious win. The main slow down here seems * is hard and not an obvious win. The main slow down here seems
* to be the integer division for pixel; one possible optimization * to be the integer division per pixel; one possible optimization
* would be to accumulate into two 16-bit integer buffers and * would be to accumulate into two 16-bit integer buffers and
* only divide down after all three passes. (SSE parallel implementation * only divide down after all three passes. (SSE parallel implementation
* of the divide step is possible.) * of the divide step is possible.)
@ -95,7 +95,7 @@ blur_rows (guchar *dst_buffer,
* equally far to the left and right. If d is odd that happens * equally far to the left and right. If d is odd that happens
* naturally, but for d even, we approximate by using a blur * naturally, but for d even, we approximate by using a blur
* on either side and then a centered blur of size d + 1. * on either side and then a centered blur of size d + 1.
* (techique also from the SVG specification) * (technique also from the SVG specification)
*/ */
if (d % 2 == 1) if (d % 2 == 1)
{ {
@ -112,9 +112,7 @@ blur_rows (guchar *dst_buffer,
} }
} }
/* Swaps width and height. Either swaps in-place and returns the original /* Swaps width and height.
* buffer or allocates a new buffer, frees the original buffer and returns
* the new buffer.
*/ */
static void static void
flip_buffer (guchar *dst_buffer, flip_buffer (guchar *dst_buffer,
@ -123,7 +121,8 @@ flip_buffer (guchar *dst_buffer,
int height) int height)
{ {
/* Working in blocks increases cache efficiency, compared to reading /* Working in blocks increases cache efficiency, compared to reading
* or writing an entire column at once */ * or writing an entire column at once
*/
#define BLOCK_SIZE 16 #define BLOCK_SIZE 16
int i0, j0; int i0, j0;
@ -190,7 +189,7 @@ _gtk_cairo_blur_surface (cairo_surface_t* surface,
if (radius == 0) if (radius == 0)
return; return;
/* Before we mess with the surface execute any pending drawing. */ /* Before we mess with the surface, execute any pending drawing. */
cairo_surface_flush (surface); cairo_surface_flush (surface);
_boxblur (cairo_image_surface_get_data (surface), _boxblur (cairo_image_surface_get_data (surface),
@ -198,11 +197,11 @@ _gtk_cairo_blur_surface (cairo_surface_t* surface,
cairo_image_surface_get_height (surface), cairo_image_surface_get_height (surface),
radius); radius);
/* Inform cairo we altered the surfaces contents. */ /* Inform cairo we altered the surface contents. */
cairo_surface_mark_dirty (surface); cairo_surface_mark_dirty (surface);
} }
/** /*
* _gtk_cairo_blur_compute_pixels: * _gtk_cairo_blur_compute_pixels:
* @radius: the radius to compute the pixels for * @radius: the radius to compute the pixels for
* *