diff options
Diffstat (limited to 'pixman/pixman/pixman-general.c')
| -rw-r--r-- | pixman/pixman/pixman-general.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/pixman/pixman/pixman-general.c b/pixman/pixman/pixman-general.c index 6310bff9d..a653fa71a 100644 --- a/pixman/pixman/pixman-general.c +++ b/pixman/pixman/pixman-general.c @@ -114,7 +114,7 @@ general_composite_rect (pixman_implementation_t *imp, pixman_composite_info_t *info) { PIXMAN_COMPOSITE_ARGS (info); - uint64_t stack_scanline_buffer[(SCANLINE_BUFFER_LENGTH * 3 + 7) / 8]; + uint8_t stack_scanline_buffer[3 * SCANLINE_BUFFER_LENGTH]; uint8_t *scanline_buffer = (uint8_t *) stack_scanline_buffer; uint8_t *src_buffer, *mask_buffer, *dest_buffer; pixman_iter_t src_iter, mask_iter, dest_iter; @@ -137,17 +137,25 @@ general_composite_rect (pixman_implementation_t *imp, Bpp = 16; } - if (width * Bpp > SCANLINE_BUFFER_LENGTH) +#define ALIGN(addr) \ + ((uint8_t *)((((uintptr_t)(addr)) + 15) & (~15))) + + src_buffer = ALIGN (scanline_buffer); + mask_buffer = ALIGN (src_buffer + width * Bpp); + dest_buffer = ALIGN (mask_buffer + width * Bpp); + + if (ALIGN (dest_buffer + width * Bpp) > + scanline_buffer + sizeof (stack_scanline_buffer)) { - scanline_buffer = pixman_malloc_abc (width, 3, Bpp); + scanline_buffer = pixman_malloc_ab_plus_c (width, Bpp * 3, 32 * 3); if (!scanline_buffer) return; - } - src_buffer = scanline_buffer; - mask_buffer = src_buffer + width * Bpp; - dest_buffer = mask_buffer + width * Bpp; + src_buffer = ALIGN (scanline_buffer); + mask_buffer = ALIGN (src_buffer + width * Bpp); + dest_buffer = ALIGN (mask_buffer + width * Bpp); + } if (width_flag == ITER_WIDE) { |