diff options
Diffstat (limited to 'src/cairo-image-surface.c')
| -rw-r--r-- | src/cairo-image-surface.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/src/cairo-image-surface.c b/src/cairo-image-surface.c index 0c5cc769..29ed1191 100644 --- a/src/cairo-image-surface.c +++ b/src/cairo-image-surface.c @@ -231,11 +231,10 @@ _pixman_format_from_masks (cairo_format_masks_t *masks, * expected. This avoid any problems from something bizarre like * alpha in the least-significant bits, or insane channel order, * or whatever. */ - _pixman_format_to_masks (format, &format_masks); - - if (masks->bpp != format_masks.bpp || - masks->red_mask != format_masks.red_mask || - masks->green_mask != format_masks.green_mask || + if (!_pixman_format_to_masks (format, &format_masks) || + masks->bpp != format_masks.bpp || + masks->red_mask != format_masks.red_mask || + masks->green_mask != format_masks.green_mask || masks->blue_mask != format_masks.blue_mask) { return FALSE; @@ -248,7 +247,7 @@ _pixman_format_from_masks (cairo_format_masks_t *masks, /* A mask consisting of N bits set to 1. */ #define MASK(N) ((1UL << (N))-1) -void +cairo_bool_t _pixman_format_to_masks (pixman_format_code_t format, cairo_format_masks_t *masks) { @@ -268,27 +267,27 @@ _pixman_format_to_masks (pixman_format_code_t format, masks->red_mask = MASK (r) << (g + b); masks->green_mask = MASK (g) << (b); masks->blue_mask = MASK (b); - return; + return TRUE; case PIXMAN_TYPE_ABGR: masks->alpha_mask = MASK (a) << (b + g + r); masks->blue_mask = MASK (b) << (g + r); masks->green_mask = MASK (g) << (r); masks->red_mask = MASK (r); - return; + return TRUE; #ifdef PIXMAN_TYPE_BGRA case PIXMAN_TYPE_BGRA: masks->blue_mask = MASK (b) << (g + r + a); masks->green_mask = MASK (g) << (r + a); masks->red_mask = MASK (r) << (a); masks->alpha_mask = MASK (a); - return; + return TRUE; #endif case PIXMAN_TYPE_A: masks->alpha_mask = MASK (a); masks->red_mask = 0; masks->green_mask = 0; masks->blue_mask = 0; - return; + return TRUE; case PIXMAN_TYPE_OTHER: case PIXMAN_TYPE_COLOR: case PIXMAN_TYPE_GRAY: @@ -299,7 +298,7 @@ _pixman_format_to_masks (pixman_format_code_t format, masks->red_mask = 0; masks->green_mask = 0; masks->blue_mask = 0; - return; + return FALSE; } } |