- bits = NULL;
- stride = 0;
- }
-
- component_alpha =
- fetchSrc &&
- fetchMask &&
- data->mask &&
- data->mask->common.type == BITS &&
- data->mask->common.component_alpha &&
- PIXMAN_FORMAT_RGB (data->mask->bits.format);
-
- {
- pixman_combine_32_func_t compose;
-
- if (wide)
- {
- if (component_alpha)
- compose = (pixman_combine_32_func_t)_pixman_implementation_combine_64_ca;
- else
- compose = (pixman_combine_32_func_t)_pixman_implementation_combine_64;
- }
- else
- {
- if (component_alpha)
- compose = _pixman_implementation_combine_32_ca;
- else
- compose = _pixman_implementation_combine_32;
- }
-
- if (!compose)
- return;
-
- if (!fetchMask)
- mask_buffer = NULL;
-
- for (i = 0; i < data->height; ++i)
- {
- /* fill first half of scanline with source */
- if (fetchSrc)
- {
- if (fetchMask)
- {
- /* fetch mask before source so that fetching of
- source can be optimized */
- fetchMask (data->mask, data->xMask, data->yMask + i,
- data->width, mask_buffer, 0, 0);
-
- if (maskClass == SOURCE_IMAGE_CLASS_HORIZONTAL)
- fetchMask = NULL;
- }
-
- if (srcClass == SOURCE_IMAGE_CLASS_HORIZONTAL)
- {
- fetchSrc (data->src, data->xSrc, data->ySrc + i,
- data->width, src_buffer, 0, 0);
- fetchSrc = NULL;
- }
- else
- {
- fetchSrc (data->src, data->xSrc, data->ySrc + i,
- data->width, src_buffer, mask_buffer,
- 0xffffffff);
- }
- }
- else if (fetchMask)
- {
- fetchMask (data->mask, data->xMask, data->yMask + i,
- data->width, mask_buffer, 0, 0);
- }
-
- if (store)
- {
- /* fill dest into second half of scanline */
- if (fetchDest)
- fetchDest (data->dest, data->xDest, data->yDest + i,
- data->width, dest_buffer, 0, 0);
-
- /* blend */
- compose (imp, data->op, dest_buffer, src_buffer, mask_buffer, data->width);
-
- /* write back */
- store (&(data->dest->bits), data->xDest, data->yDest + i, data->width,
- dest_buffer);
- }
- else
- {
- /* blend */
- compose (imp, data->op, bits + (data->yDest + i) * stride +
- data->xDest,
- src_buffer, mask_buffer, data->width);
- }
- }